Removed unused import

(removed toast during add app)

.gitignore

@@ -9,6 +9,7 @@
 .history
 .svn/
 migrate_working_dir/
+.vscode/
 
 # IntelliJ related
 *.iml

android/app/src/main/AndroidManifest.xml

@@ -30,7 +30,25 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+        <service
+            android:name="dev.fluttercommunity.plus.androidalarmmanager.AlarmService"
+            android:permission="android.permission.BIND_JOB_SERVICE"
+            android:exported="false"/>
+        <receiver
+            android:name="dev.fluttercommunity.plus.androidalarmmanager.AlarmBroadcastReceiver"
+            android:exported="false"/>
+        <receiver
+            android:name="dev.fluttercommunity.plus.androidalarmmanager.RebootBroadcastReceiver"
+            android:enabled="false"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+            </intent-filter>
+        </receiver>
     </application>
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
+    <uses-permission android:name="android.permission.WAKE_LOCK"/>
+    <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM"/>
 </manifest>

android/app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+    <external-path path="Android/data/dev.imranr.obtainium/" name="files_root" />
+    <external-path path="." name="external_storage_root" />
+</paths>

assets/translations/en.json

@@ -0,0 +1,216 @@
+{
+    "invalidURLForSource": "Not a valid {} App URL",
+    "noReleaseFound": "Could not find a suitable release",
+    "noVersionFound": "Could not determine release version",
+    "urlMatchesNoSource": "URL does not match a known source",
+    "cantInstallOlderVersion": "Cannot install an older version of an App",
+    "appIdMismatch": "Downloaded package ID does not match existing App ID",
+    "functionNotImplemented": "This class has not implemented this function",
+    "placeholder": "Placeholder",
+    "someErrors": "Some Errors Occurred",
+    "unexpectedError": "Unexpected Error",
+    "ok": "Okay",
+    "and": "and",
+    "startedBgUpdateTask": "Started BG update check task",
+    "bgUpdateIgnoreAfterIs": "Bg update ignoreAfter is  {}",
+    "startedActualBGUpdateCheck": "Started actual BG update checking",
+    "bgUpdateTaskFinished": "Finished BG update check task",
+    "firstRun": "This is the first ever run of Obtainium",
+    "settingUpdateCheckIntervalTo": "Setting update interval to {}",
+    "githubPATLabel": "GitHub Personal Access Token (Increases Rate Limit)",
+    "githubPATHint": "PAT must be in this format: username:token",
+    "githubPATFormat": "username:token",
+    "githubPATLinkText": "'About GitHub PATs",
+    "includePrereleases": "Include prereleases",
+    "fallbackToOlderReleases": "Fallback to older releases",
+    "filterReleaseTitlesByRegEx": "Filter Release Titles by Regular Expression",
+    "invalidRegEx": "Invalid regular expression",
+    "noDescription": "No description",
+    "cancel": "Cancel",
+    "continue": "Continue",
+    "requiredInBrackets": "(Required)",
+    "dropdownNoOptsError": "ERROR: DROPDOWN MUST HAVE AT LEAST ONE OPT",
+    "colour": "Colour",
+    "githubStarredRepos": "GitHub Starred Repos",
+    "uname": "Username",
+    "wrongArgNum": "Wrong number of arguments provided",
+    "xIsTrackOnly": "{} is Track-Only",
+    "source": "Source",
+    "app": "App",
+    "appsFromSourceAreTrackOnly": "Apps from this source are 'Track-Only'.' ",
+    "youPickedTrackOnly": "You have selected the 'Track-Only' option.",
+    "trackOnlyAppDescription": "The App will be tracked for updates, but Obtainium will not be able to download or install it.",
+    "cancelled": "Cancelled",
+    "appAlreadyAdded": "App already added",
+    "addApp": "Add App",
+    "appSourceURL": "App Source URL",
+    "error": "Error",
+    "add": "Add",
+    "searchSomeSourcesLabel": "Search (Some Sources Only)",
+    "search": "Search",
+    "additionalOptsFor": "Additional Options for {}",
+    "supportedSourcesBelow": "Supported Sources:",
+    "trackOnlyInBrackets": "(Track-Only)",
+    "searchableInBrackets": "(Searchable)",
+    "appsString": "Apps",
+    "noApps": "No Apps",
+    "noAppsForFilter": "No Apps for Filter",
+    "byX": "By {}",
+    "percentProgress": "Progress: {}%",
+    "pleaseWait": "Please Wait...",
+    "updateAvailable": "Update Available",
+    "estimateInBracketsShort": "(Est.)",
+    "notInstalled": "Not Installed",
+    "estimateInBrackets": "(Estimate)",
+    "selectAll": "Select All",
+    "deselectN": "Deselect {}",
+    "xWillBeRemovedButRemainInstalled": "{} will be removed from Obtainium but remain installed on device.",
+    "removeSelectedAppsQuestion": "Remove Selected Apps?",
+    "removeSelectedApps": "Remove Selected Apps",
+    "updateX": "Update {}",
+    "installX": "Install {}",
+    "markXTrackOnlyAsUpdated": "Mark {}\n(Track-Only)\nas Updated",
+    "changeX": "Change {}",
+    "installUpdateApps": "Install/Update Apps",
+    "installUpdateSelectedApps": "Install/Update Selected Apps",
+    "onlyAppliesToInstalledAndOutdatedApps": "Only applies to installed but out of date Apps whose install status cannot be automatically detected.",
+    "markXSelectedAppsAsUpdated": "Mark {} Selected Apps as Updated?",
+    "no": "No",
+    "yes": "Yes",
+    "markSelectedAppsUpdated": "Mark Selected Apps as Updated",
+    "pinToTop": "Pin to top",
+    "unpinFromTop": "Unpin from top",
+    "resetInstallStatusForSelectedAppsQuestion": "Reset Install Status for Selected Apps?",
+    "installStatusOfXWillBeResetExplanation": "The install status of any selected Apps will be reset.\n\nThis can help when the App version shown in Obtainium is incorrect due to failed updates or other issues.",
+    "shareSelectedAppURLs": "Share Selected App URLs",
+    "resetInstallStatus": "Reset Install Status",
+    "more": "More",
+    "removeOutdatedFilter": "Remove Out-of-Date App Filter",
+    "showOutdatedOnly": "Show Out-of-Date Apps Only",
+    "filter": "Filter",
+    "filterActive": "Filter *",
+    "filterApps": "Filter Apps",
+    "appName": "App Name",
+    "author": "Author",
+    "upToDateApps": "Up to Date Apps",
+    "nonInstalledApps": "Non-Installed Apps",
+    "importExport": "Import/Export",
+    "settings": "Settings",
+    "exportedTo": "Exported to {}",
+    "obtainiumExport": "Obtainium Export",
+    "invalidInput": "Invalid input",
+    "importedX": "Imported {}",
+    "obtainiumImport": "Obtainium Import",
+    "importFromURLList": "Import from URL List",
+    "searchQuery": "Search Query",
+    "appURLList": "App URL List",
+    "line": "Line",
+    "searchX": "Search {}",
+    "noResults": "No results found",
+    "importX": "Import {}",
+    "importedAppsIdDisclaimer": "Imported Apps may incorrectly show as \"Not Installed\".\nTo fix this, re-install them through Obtainium.\nThis should not affect App data.\n\nOnly affects URL and third-party import methods.",
+    "importErrors": "Import Errors",
+    "importedXOfYApps": "{} of {} Apps imported.",
+    "followingURLsHadErrors": "The following URLs had errors:",
+    "okay": "Okay",
+    "selectURL": "Select URL",
+    "selectURLs": "Select URLs",
+    "pick": "Pick",
+    "theme": "Theme",
+    "dark": "Dark",
+    "light": "Light",
+    "followSystem": "Follow System",
+    "obtainium": "Obtainium",
+    "materialYou": "Material You",
+    "appSortBy": "App Sort By",
+    "authorName": "Author/Name",
+    "nameAuthor": "Name/Author",
+    "asAdded": "As Added",
+    "appSortOrder": "App Sort Order",
+    "ascending": "Ascending",
+    "descending": "Descending",
+    "bgUpdateCheckInterval": "Background Update Checking Interval",
+    "neverManualOnly": "Never - Manual Only",
+    "appearance": "Appearance",
+    "showWebInAppView": "Show Source Webpage in App View",
+    "pinUpdates": "Pin Updates to Top of Apps View",
+    "updates": "Updated",
+    "sourceSpecific": "Source-Specific",
+    "appSource": "App Source",
+    "noLogs": "No Logs",
+    "appLogs": "App Logs",
+    "close": "Close",
+    "share": "Share",
+    "appNotFound": "App not found",
+    "obtainiumExportHyphenatedLowercase": "obtainium-export",
+    "pickAnAPK": "Pick an APK",
+    "appHasMoreThanOnePackage": "{} has more than one package:",
+    "deviceSupportsXArch": "Your device supports the {} CPU architecture.",
+    "deviceSupportsFollowingArchs": "Your device supports the following CPU architectures:",
+    "warning": "Warning",
+    "sourceIsXButPackageFromYPrompt": "The App source is '{}' but the release package comes from '{}'. Continue?",
+    "updatesAvailable": "Updates Available",
+    "updatesAvailableNotifDescription": "Notifies the user that updates are available for one or more Apps tracked by Obtainium",
+    "noNewUpdates": "No new updates.",
+    "xHasAnUpdate": "{} has an update.",
+    "appsUpdated": "Apps Updated",
+    "appsUpdatedNotifDescription": "Notifies the user that updates to one or more Apps were applied in the background",
+    "xWasUpdatedToY": "{} was updated to {}.",
+    "errorCheckingUpdates": "Error Checking for Updates",
+    "errorCheckingUpdatesNotifDescription": "A notification that shows when background update checking fails",
+    "appsRemoved": "Apps Removed",
+    "appsRemovedNotifDescription": "Notifies the user that one or more Apps were removed due to errors while loading them",
+    "xWasRemovedDueToErrorY": "{} was removed due to this error: {}",
+    "completeAppInstallation": "Complete App Installation",
+    "obtainiumMustBeOpenToInstallApps": "Obtainium must be open to install Apps",
+    "completeAppInstallationNotifDescription": "Asks the user to return to Obtainium to finish installing an App",
+    "checkingForUpdates": "Checking for Updates",
+    "checkingForUpdatesNotifDescription": "Transient notification that appears when checking for updates",
+    "pleaseAllowInstallPerm": "Please allow Obtainium to install Apps",
+    "trackOnly": "Track-Only",
+    "errorWithHttpStatusCode": "Error {}",
+    "tooManyRequestsTryAgainInMinutes": {
+        "one": "Too many requests (rate limited) - try again in {} minute",
+        "other": "Too many requests (rate limited) - try again in {} minutes"
+    },
+    "bgUpdateGotErrorRetryInMinutes": {
+        "one": "BG update checking encountered a {}, will schedule a retry check in {} minute",
+        "other": "BG update checking encountered a {}, will schedule a retry check in {} minutes"
+    },
+    "bgCheckFoundUpdatesWillNotifyIfNeeded": {
+        "one": "BG update checking found {} update - will notify user if needed",
+        "other": "BG update checking found {} updates - will notify user if needed"
+    },
+    "apps": {
+        "one": "{} App",
+        "other": "{} Apps"
+    },
+    "url": {
+        "one": "{} URL",
+        "other": "{} URLs"
+    },
+    "minute": {
+        "one": "{} Minute",
+        "other": "{} Minutes"
+    },
+    "hour": {
+        "one": "{} Hour",
+        "other": "{} Hours"
+    },
+    "day": {
+        "one": "{} Day",
+        "other": "{} Days"
+    },
+    "clearedNLogsBeforeXAfterY": {
+        "one": "Cleared {n} log (before = {before}, after = {after})",
+        "other": "Cleared {n} logs (before = {before}, after = {after})"
+    },
+    "xAndNMoreUpdatesAvailable": {
+        "one": "{} and {} more app have updated.",
+        "other": "{} and {} more apps have updates."
+    },
+    "xAndNMoreUpdatesInstalled": {
+        "one": "{} and {} more app were updated.",
+        "other": "{} and {} more apps were updated."
+    }
+}

lib/app_sources/apkmirror.dart

@@ -0,0 +1,58 @@
+import 'package:html/parser.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class APKMirror extends AppSource {
+  APKMirror() {
+    host = 'apkmirror.com';
+    enforceTrackOnly = true;
+  }
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host/apk/[^/]+/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw InvalidURLError(runtimeType.toString());
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) =>
+      '$standardUrl/#whatsnew';
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    Response res = await get(Uri.parse('$standardUrl/feed'));
+    if (res.statusCode == 200) {
+      String? titleString = parse(res.body)
+          .querySelector('item')
+          ?.querySelector('title')
+          ?.innerHtml;
+      String? version = titleString
+          ?.substring(RegExp('[0-9]').firstMatch(titleString)?.start ?? 0,
+              RegExp(' by ').firstMatch(titleString)?.start ?? 0)
+          .trim();
+      if (version == null || version.isEmpty) {
+        version = titleString;
+      }
+      if (version == null || version.isEmpty) {
+        throw NoVersionError();
+      }
+      return APKDetails(version, []);
+    } else {
+      throw NoReleasesError();
+    }
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    String temp = standardUrl.substring(standardUrl.indexOf('://') + 3);
+    List<String> names = temp.substring(temp.indexOf('/') + 1).split('/');
+    return AppNames(names[1], names[2]);
+  }
+}

lib/app_sources/fdroid.dart

@@ -0,0 +1,71 @@
+import 'dart:convert';
+
+import 'package:http/http.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class FDroid extends AppSource {
+  FDroid() {
+    host = 'f-droid.org';
+  }
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegExB =
+        RegExp('^https?://$host/+[^/]+/+packages/+[^/]+');
+    RegExpMatch? match = standardUrlRegExB.firstMatch(url.toLowerCase());
+    if (match != null) {
+      url = 'https://$host/packages/${Uri.parse(url).pathSegments.last}';
+    }
+    RegExp standardUrlRegExA = RegExp('^https?://$host/+packages/+[^/]+');
+    match = standardUrlRegExA.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw InvalidURLError(runtimeType.toString());
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) => null;
+
+  @override
+  String? tryInferringAppId(String standardUrl) {
+    return Uri.parse(standardUrl).pathSegments.last;
+  }
+
+  APKDetails getAPKUrlsFromFDroidPackagesAPIResponse(
+      Response res, String apkUrlPrefix) {
+    if (res.statusCode == 200) {
+      List<dynamic> releases = jsonDecode(res.body)['packages'] ?? [];
+      if (releases.isEmpty) {
+        throw NoReleasesError();
+      }
+      String? latestVersion = releases[0]['versionName'];
+      if (latestVersion == null) {
+        throw NoVersionError();
+      }
+      List<String> apkUrls = releases
+          .where((element) => element['versionName'] == latestVersion)
+          .map((e) => '${apkUrlPrefix}_${e['versionCode']}.apk')
+          .toList();
+      return APKDetails(latestVersion, apkUrls);
+    } else {
+      throw NoReleasesError();
+    }
+  }
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    String? appId = tryInferringAppId(standardUrl);
+    return getAPKUrlsFromFDroidPackagesAPIResponse(
+        await get(Uri.parse('https://f-droid.org/api/v1/packages/$appId')),
+        'https://f-droid.org/repo/$appId');
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    return AppNames('F-Droid', Uri.parse(standardUrl).pathSegments.last);
+  }
+}

lib/app_sources/github.dart

@@ -0,0 +1,207 @@
+import 'dart:convert';
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/components/generated_form.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/settings_provider.dart';
+import 'package:obtainium/providers/source_provider.dart';
+import 'package:url_launcher/url_launcher_string.dart';
+
+class GitHub extends AppSource {
+  GitHub() {
+    host = 'github.com';
+
+    additionalSourceAppSpecificDefaults = ['true', 'true', ''];
+
+    additionalSourceSpecificSettingFormItems = [
+      GeneratedFormItem(
+          label: tr('githubPATLabel'),
+          id: 'github-creds',
+          required: false,
+          additionalValidators: [
+            (value) {
+              if (value != null && value.trim().isNotEmpty) {
+                if (value
+                        .split(':')
+                        .where((element) => element.trim().isNotEmpty)
+                        .length !=
+                    2) {
+                  return tr('githubPATHint');
+                }
+              }
+              return null;
+            }
+          ],
+          hint: tr('githubPATFormat'),
+          belowWidgets: [
+            const SizedBox(
+              height: 8,
+            ),
+            GestureDetector(
+                onTap: () {
+                  launchUrlString(
+                      'https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token',
+                      mode: LaunchMode.externalApplication);
+                },
+                child: Text(
+                  tr('githubPATLinkText'),
+                  style: const TextStyle(
+                      decoration: TextDecoration.underline, fontSize: 12),
+                ))
+          ])
+    ];
+
+    additionalSourceAppSpecificFormItems = [
+      [
+        GeneratedFormItem(
+            label: tr('includePrereleases'), type: FormItemType.bool)
+      ],
+      [
+        GeneratedFormItem(
+            label: tr('fallbackToOlderReleases'), type: FormItemType.bool)
+      ],
+      [
+        GeneratedFormItem(
+            label: tr('filterReleaseTitlesByRegEx'),
+            type: FormItemType.string,
+            required: false,
+            additionalValidators: [
+              (value) {
+                if (value == null || value.isEmpty) {
+                  return null;
+                }
+                try {
+                  RegExp(value);
+                } catch (e) {
+                  return tr('invalidRegEx');
+                }
+                return null;
+              }
+            ])
+      ]
+    ];
+
+    canSearch = true;
+  }
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host/[^/]+/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw InvalidURLError(runtimeType.toString());
+    }
+    return url.substring(0, match.end);
+  }
+
+  Future<String> getCredentialPrefixIfAny() async {
+    SettingsProvider settingsProvider = SettingsProvider();
+    await settingsProvider.initializeSettings();
+    String? creds = settingsProvider
+        .getSettingString(additionalSourceSpecificSettingFormItems[0].id);
+    return creds != null && creds.isNotEmpty ? '$creds@' : '';
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) =>
+      '$standardUrl/releases';
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    var includePrereleases =
+        additionalData.isNotEmpty && additionalData[0] == 'true';
+    var fallbackToOlderReleases =
+        additionalData.length >= 2 && additionalData[1] == 'true';
+    var regexFilter = additionalData.length >= 3 && additionalData[2].isNotEmpty
+        ? additionalData[2]
+        : null;
+    Response res = await get(Uri.parse(
+        'https://${await getCredentialPrefixIfAny()}api.$host/repos${standardUrl.substring('https://$host'.length)}/releases'));
+    if (res.statusCode == 200) {
+      var releases = jsonDecode(res.body) as List<dynamic>;
+
+      List<String> getReleaseAPKUrls(dynamic release) =>
+          (release['assets'] as List<dynamic>?)
+              ?.map((e) {
+                return e['browser_download_url'] != null
+                    ? e['browser_download_url'] as String
+                    : '';
+              })
+              .where((element) => element.toLowerCase().endsWith('.apk'))
+              .toList() ??
+          [];
+
+      dynamic targetRelease;
+
+      for (int i = 0; i < releases.length; i++) {
+        if (!fallbackToOlderReleases && i > 0) break;
+        if (!includePrereleases && releases[i]['prerelease'] == true) {
+          continue;
+        }
+
+        if (regexFilter != null &&
+            !RegExp(regexFilter)
+                .hasMatch((releases[i]['name'] as String).trim())) {
+          continue;
+        }
+        var apkUrls = getReleaseAPKUrls(releases[i]);
+        if (apkUrls.isEmpty && !trackOnly) {
+          continue;
+        }
+        targetRelease = releases[i];
+        targetRelease['apkUrls'] = apkUrls;
+        break;
+      }
+      if (targetRelease == null) {
+        throw NoReleasesError();
+      }
+      String? version = targetRelease['tag_name'];
+      if (version == null) {
+        throw NoVersionError();
+      }
+      return APKDetails(version, targetRelease['apkUrls'] as List<String>);
+    } else {
+      rateLimitErrorCheck(res);
+      throw getObtainiumHttpError(res);
+    }
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    String temp = standardUrl.substring(standardUrl.indexOf('://') + 3);
+    List<String> names = temp.substring(temp.indexOf('/') + 1).split('/');
+    return AppNames(names[0], names[1]);
+  }
+
+  @override
+  Future<Map<String, String>> search(String query) async {
+    Response res = await get(Uri.parse(
+        'https://${await getCredentialPrefixIfAny()}api.$host/search/repositories?q=${Uri.encodeQueryComponent(query)}&per_page=100'));
+    if (res.statusCode == 200) {
+      Map<String, String> urlsWithDescriptions = {};
+      for (var e in (jsonDecode(res.body)['items'] as List<dynamic>)) {
+        urlsWithDescriptions.addAll({
+          e['html_url'] as String: e['description'] != null
+              ? e['description'] as String
+              : tr('noDescription')
+        });
+      }
+      return urlsWithDescriptions;
+    } else {
+      rateLimitErrorCheck(res);
+      throw getObtainiumHttpError(res);
+    }
+  }
+
+  rateLimitErrorCheck(Response res) {
+    if (res.headers['x-ratelimit-remaining'] == '0') {
+      throw RateLimitError(
+          (int.parse(res.headers['x-ratelimit-reset'] ?? '1800000000') /
+                  60000000)
+              .round());
+    }
+  }
+}

lib/app_sources/gitlab.dart

@@ -0,0 +1,70 @@
+import 'package:html/parser.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/app_sources/github.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class GitLab extends AppSource {
+  GitLab() {
+    host = 'gitlab.com';
+  }
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host/[^/]+/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw InvalidURLError(runtimeType.toString());
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) =>
+      '$standardUrl/-/releases';
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    Response res = await get(Uri.parse('$standardUrl/-/tags?format=atom'));
+    if (res.statusCode == 200) {
+      var standardUri = Uri.parse(standardUrl);
+      var parsedHtml = parse(res.body);
+      var entry = parsedHtml.querySelector('entry');
+      var entryContent =
+          parse(parseFragment(entry?.querySelector('content')!.innerHtml).text);
+      var apkUrls = [
+        ...getLinksFromParsedHTML(
+            entryContent,
+            RegExp(
+                '^${standardUri.path.replaceAllMapped(RegExp(r'[.*+?^${}()|[\]\\]'), (x) {
+                  return '\\${x[0]}';
+                })}/uploads/[^/]+/[^/]+\\.apk\$',
+                caseSensitive: false),
+            standardUri.origin),
+        // GitLab releases may contain links to externally hosted APKs
+        ...getLinksFromParsedHTML(entryContent,
+                RegExp('/[^/]+\\.apk\$', caseSensitive: false), '')
+            .where((element) => Uri.parse(element).host != '')
+            .toList()
+      ];
+
+      var entryId = entry?.querySelector('id')?.innerHtml;
+      var version =
+          entryId == null ? null : Uri.parse(entryId).pathSegments.last;
+      if (version == null) {
+        throw NoVersionError();
+      }
+      return APKDetails(version, apkUrls);
+    } else {
+      throw NoReleasesError();
+    }
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    // Same as GitHub
+    return GitHub().getAppNames(standardUrl);
+  }
+}

lib/app_sources/izzyondroid.dart

@@ -0,0 +1,44 @@
+import 'package:http/http.dart';
+import 'package:obtainium/app_sources/fdroid.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class IzzyOnDroid extends AppSource {
+  IzzyOnDroid() {
+    host = 'android.izzysoft.de';
+  }
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host/repo/apk/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw InvalidURLError(runtimeType.toString());
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) => null;
+
+  @override
+  String? tryInferringAppId(String standardUrl) {
+    return FDroid().tryInferringAppId(standardUrl);
+  }
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    String? appId = tryInferringAppId(standardUrl);
+    return FDroid().getAPKUrlsFromFDroidPackagesAPIResponse(
+        await get(
+            Uri.parse('https://apt.izzysoft.de/fdroid/api/v1/packages/$appId')),
+        'https://android.izzysoft.de/frepo/$appId');
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    return AppNames('IzzyOnDroid', Uri.parse(standardUrl).pathSegments.last);
+  }
+}

lib/app_sources/mullvad.dart

@@ -0,0 +1,51 @@
+import 'package:html/parser.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class Mullvad extends AppSource {
+  Mullvad() {
+    host = 'mullvad.net';
+  }
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw InvalidURLError(runtimeType.toString());
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) =>
+      'https://github.com/mullvad/mullvadvpn-app/blob/master/CHANGELOG.md';
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    Response res = await get(Uri.parse('$standardUrl/en/download/android'));
+    if (res.statusCode == 200) {
+      var version = parse(res.body)
+          .querySelector('p.subtitle.is-6')
+          ?.querySelector('a')
+          ?.attributes['href']
+          ?.split('/')
+          .last;
+      if (version == null) {
+        throw NoVersionError();
+      }
+      return APKDetails(
+          version, ['https://mullvad.net/download/app/apk/latest']);
+    } else {
+      throw NoReleasesError();
+    }
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    return AppNames('Mullvad-VPN', 'Mullvad-VPN');
+  }
+}

lib/app_sources/signal.dart

@@ -0,0 +1,41 @@
+import 'dart:convert';
+import 'package:http/http.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class Signal extends AppSource {
+  Signal() {
+    host = 'signal.org';
+  }
+
+  @override
+  String standardizeURL(String url) {
+    return 'https://$host';
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) => null;
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    Response res =
+        await get(Uri.parse('https://updates.$host/android/latest.json'));
+    if (res.statusCode == 200) {
+      var json = jsonDecode(res.body);
+      String? apkUrl = json['url'];
+      List<String> apkUrls = apkUrl == null ? [] : [apkUrl];
+      String? version = json['versionName'];
+      if (version == null) {
+        throw NoVersionError();
+      }
+      return APKDetails(version, apkUrls);
+    } else {
+      throw NoReleasesError();
+    }
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) => AppNames('Signal', 'Signal');
+}

lib/app_sources/sourceforge.dart

@@ -0,0 +1,64 @@
+import 'package:html/parser.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class SourceForge extends AppSource {
+  SourceForge() {
+    host = 'sourceforge.net';
+  }
+
+  @override
+  String standardizeURL(String url) {
+    RegExp standardUrlRegEx = RegExp('^https?://$host/projects/[^/]+');
+    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
+    if (match == null) {
+      throw InvalidURLError(runtimeType.toString());
+    }
+    return url.substring(0, match.end);
+  }
+
+  @override
+  String? changeLogPageFromStandardUrl(String standardUrl) => null;
+
+  @override
+  Future<APKDetails> getLatestAPKDetails(
+      String standardUrl, List<String> additionalData,
+      {bool trackOnly = false}) async {
+    Response res = await get(Uri.parse('$standardUrl/rss?path=/'));
+    if (res.statusCode == 200) {
+      var parsedHtml = parse(res.body);
+      var allDownloadLinks =
+          parsedHtml.querySelectorAll('guid').map((e) => e.innerHtml).toList();
+      getVersion(String url) {
+        try {
+          var tokens = url.split('/');
+          return tokens[tokens.length - 3];
+        } catch (e) {
+          return null;
+        }
+      }
+
+      String? version = getVersion(allDownloadLinks[0]);
+      if (version == null) {
+        throw NoVersionError();
+      }
+      var apkUrlListAllReleases = allDownloadLinks
+          .where((element) => element.toLowerCase().endsWith('.apk/download'))
+          .toList();
+      var apkUrlList =
+          apkUrlListAllReleases // This can be used skipped for fallback support later
+              .where((element) => getVersion(element) == version)
+              .toList();
+      return APKDetails(version, apkUrlList);
+    } else {
+      throw NoReleasesError();
+    }
+  }
+
+  @override
+  AppNames getAppNames(String standardUrl) {
+    return AppNames(runtimeType.toString(),
+        standardUrl.substring(standardUrl.lastIndexOf('/') + 1));
+  }
+}

lib/components/generated_form.dart

@@ -0,0 +1,229 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+
+enum FormItemType { string, bool }
+
+typedef OnValueChanges = void Function(
+    List<String> values, bool valid, bool isBuilding);
+
+class GeneratedFormItem {
+  late String key;
+  late String label;
+  late FormItemType type;
+  late bool required;
+  late int max;
+  late List<String? Function(String? value)> additionalValidators;
+  late String id;
+  late List<Widget> belowWidgets;
+  late String? hint;
+  late List<String>? opts;
+
+  GeneratedFormItem(
+      {this.label = 'Input',
+      this.type = FormItemType.string,
+      this.required = true,
+      this.max = 1,
+      this.additionalValidators = const [],
+      this.id = 'input',
+      this.belowWidgets = const [],
+      this.hint,
+      this.opts,
+      this.key = 'default'});
+}
+
+class GeneratedForm extends StatefulWidget {
+  const GeneratedForm(
+      {super.key,
+      required this.items,
+      required this.onValueChanges,
+      required this.defaultValues});
+
+  final List<List<GeneratedFormItem>> items;
+  final OnValueChanges onValueChanges;
+  final List<String> defaultValues;
+
+  @override
+  State<GeneratedForm> createState() => _GeneratedFormState();
+}
+
+class _GeneratedFormState extends State<GeneratedForm> {
+  final _formKey = GlobalKey<FormState>();
+  late List<List<String>> values;
+  late List<List<Widget>> formInputs;
+  List<List<Widget>> rows = [];
+
+  // If any value changes, call this to update the parent with value and validity
+  void someValueChanged({bool isBuilding = false}) {
+    List<String> returnValues = [];
+    var valid = true;
+    for (int r = 0; r < values.length; r++) {
+      for (int i = 0; i < values[r].length; i++) {
+        returnValues.add(values[r][i]);
+        if (formInputs[r][i] is TextFormField) {
+          valid = valid &&
+              ((formInputs[r][i].key as GlobalKey<FormFieldState>)
+                      .currentState
+                      ?.isValid ??
+                  false);
+        }
+      }
+    }
+    widget.onValueChanges(returnValues, valid, isBuilding);
+  }
+
+  @override
+  void initState() {
+    super.initState();
+
+    // Initialize form values as all empty
+    int j = 0;
+    values = widget.items
+        .map((row) => row.map((e) {
+              return j < widget.defaultValues.length
+                  ? widget.defaultValues[j++]
+                  : e.opts != null
+                      ? e.opts!.first
+                      : '';
+            }).toList())
+        .toList();
+
+    // Dynamically create form inputs
+    formInputs = widget.items.asMap().entries.map((row) {
+      return row.value.asMap().entries.map((e) {
+        if (e.value.type == FormItemType.string && e.value.opts == null) {
+          final formFieldKey = GlobalKey<FormFieldState>();
+          return TextFormField(
+            key: formFieldKey,
+            initialValue: values[row.key][e.key],
+            autovalidateMode: AutovalidateMode.onUserInteraction,
+            onChanged: (value) {
+              setState(() {
+                values[row.key][e.key] = value;
+                someValueChanged();
+              });
+            },
+            decoration: InputDecoration(
+                helperText: e.value.label + (e.value.required ? ' *' : ''),
+                hintText: e.value.hint),
+            minLines: e.value.max <= 1 ? null : e.value.max,
+            maxLines: e.value.max <= 1 ? 1 : e.value.max,
+            validator: (value) {
+              if (e.value.required && (value == null || value.trim().isEmpty)) {
+                return '${e.value.label} ${tr('requiredInBrackets')}';
+              }
+              for (var validator in e.value.additionalValidators) {
+                String? result = validator(value);
+                if (result != null) {
+                  return result;
+                }
+              }
+              return null;
+            },
+          );
+        } else if (e.value.type == FormItemType.string &&
+            e.value.opts != null) {
+          if (e.value.opts!.isEmpty) {
+            return Text(tr('dropdownNoOptsError'));
+          }
+          return DropdownButtonFormField(
+              decoration: InputDecoration(labelText: tr('colour')),
+              value: values[row.key][e.key],
+              items: e.value.opts!
+                  .map((e) => DropdownMenuItem(value: e, child: Text(e)))
+                  .toList(),
+              onChanged: (value) {
+                setState(() {
+                  values[row.key][e.key] = value ?? e.value.opts!.first;
+                  someValueChanged();
+                });
+              });
+        } else {
+          return Container(); // Some input types added in build
+        }
+      }).toList();
+    }).toList();
+    someValueChanged(isBuilding: true);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    for (var r = 0; r < formInputs.length; r++) {
+      for (var e = 0; e < formInputs[r].length; e++) {
+        if (widget.items[r][e].type == FormItemType.bool) {
+          formInputs[r][e] = Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              Text(widget.items[r][e].label),
+              Switch(
+                  value: values[r][e] == 'true',
+                  onChanged: (value) {
+                    setState(() {
+                      values[r][e] = value ? 'true' : '';
+                      someValueChanged();
+                    });
+                  })
+            ],
+          );
+        }
+      }
+    }
+
+    rows.clear();
+    formInputs.asMap().entries.forEach((rowInputs) {
+      if (rowInputs.key > 0) {
+        rows.add([
+          SizedBox(
+            height: widget.items[rowInputs.key][0].type == FormItemType.bool &&
+                    widget.items[rowInputs.key - 1][0].type ==
+                        FormItemType.string
+                ? 25
+                : 8,
+          )
+        ]);
+      }
+      List<Widget> rowItems = [];
+      rowInputs.value.asMap().entries.forEach((rowInput) {
+        if (rowInput.key > 0) {
+          rowItems.add(const SizedBox(
+            width: 20,
+          ));
+        }
+        rowItems.add(Expanded(
+            child: Column(
+                crossAxisAlignment: CrossAxisAlignment.stretch,
+                children: [
+              rowInput.value,
+              ...widget.items[rowInputs.key][rowInput.key].belowWidgets
+            ])));
+      });
+      rows.add(rowItems);
+    });
+
+    return Form(
+        key: _formKey,
+        child: Column(
+          children: [
+            ...rows.map((row) => Row(
+                  mainAxisAlignment: MainAxisAlignment.start,
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [...row.map((e) => e)],
+                ))
+          ],
+        ));
+  }
+}
+
+String? findGeneratedFormValueByKey(
+    List<GeneratedFormItem> items, List<String> values, String key) {
+  var foundIndex = -1;
+  for (var i = 0; i < items.length; i++) {
+    if (items[i].key == key) {
+      foundIndex = i;
+      break;
+    }
+  }
+  if (foundIndex >= 0 && foundIndex < values.length) {
+    return values[foundIndex];
+  }
+  return null;
+}

lib/components/generated_form_modal.dart

@@ -1,80 +1,82 @@
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-
+import 'package:obtainium/components/generated_form.dart';
-class GeneratedFormItem {
-  late String message;
-  late bool required;
-  late int lines;
-
-  GeneratedFormItem(this.message, this.required, this.lines);
-}
 
 class GeneratedFormModal extends StatefulWidget {
   const GeneratedFormModal(
-      {super.key, required this.title, required this.items});
+      {super.key,
+      required this.title,
+      required this.items,
+      required this.defaultValues,
+      this.initValid = false,
+      this.message = ''});
 
   final String title;
-  final List<GeneratedFormItem> items;
+  final String message;
+  final List<List<GeneratedFormItem>> items;
+  final List<String> defaultValues;
+  final bool initValid;
 
   @override
   State<GeneratedFormModal> createState() => _GeneratedFormModalState();
 }
 
 class _GeneratedFormModalState extends State<GeneratedFormModal> {
-  final _formKey = GlobalKey<FormState>();
+  List<String> values = [];
+  bool valid = false;
 
-  final urlInputController = TextEditingController();
+  @override
+  void initState() {
+    super.initState();
+    values = widget.defaultValues;
+    valid = widget.initValid || widget.items.isEmpty;
+  }
 
   @override
   Widget build(BuildContext context) {
-    final formInputs = widget.items.map((e) {
-      final controller = TextEditingController();
-      return [
-        controller,
-        TextFormField(
-          decoration: InputDecoration(helperText: e.message),
-          controller: controller,
-          minLines: e.lines <= 1 ? null : e.lines,
-          maxLines: e.lines <= 1 ? 1 : e.lines,
-          validator: e.required
-              ? (value) {
-                  if (value == null || value.isEmpty) {
-                    return '${e.message} (required)';
-                  }
-                  return null;
-                }
-              : null,
-        )
-      ];
-    }).toList();
     return AlertDialog(
       scrollable: true,
       title: Text(widget.title),
-      content: Form(
+      content:
-          key: _formKey,
+          Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: [
-          child: Column(
+        if (widget.message.isNotEmpty) Text(widget.message),
-            crossAxisAlignment: CrossAxisAlignment.stretch,
+        if (widget.message.isNotEmpty)
-            children: [...formInputs.map((e) => e[1] as Widget)],
+          const SizedBox(
-          )),
+            height: 16,
+          ),
+        GeneratedForm(
+            items: widget.items,
+            onValueChanges: (values, valid, isBuilding) {
+              if (isBuilding) {
+                this.values = values;
+                this.valid = valid;
+              } else {
+                setState(() {
+                  this.values = values;
+                  this.valid = valid;
+                });
+              }
+            },
+            defaultValues: widget.defaultValues)
+      ]),
       actions: [
         TextButton(
             onPressed: () {
               Navigator.of(context).pop(null);
             },
-            child: const Text('Cancel')),
+            child: Text(tr('cancel'))),
         TextButton(
-            onPressed: () {
+            onPressed: !valid
-              if (_formKey.currentState?.validate() == true) {
+                ? null
-                HapticFeedback.selectionClick();
+                : () {
-                Navigator.of(context).pop(formInputs
+                    if (valid) {
-                    .map((e) => (e[0] as TextEditingController).value.text)
+                      HapticFeedback.selectionClick();
-                    .toList());
+                      Navigator.of(context).pop(values);
-              }
+                    }
-            },
+                  },
-            child: const Text('Continue'))
+            child: Text(tr('continue')))
       ],
     );
   }
 }
-
-// TODO: Add support for larger textarea so this can be used for text/json imports

lib/custom_errors.dart

@@ -0,0 +1,123 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+import 'package:obtainium/providers/logs_provider.dart';
+import 'package:provider/provider.dart';
+
+class ObtainiumError {
+  late String message;
+  bool unexpected;
+  ObtainiumError(this.message, {this.unexpected = false});
+  @override
+  String toString() {
+    return message;
+  }
+}
+
+class RateLimitError {
+  late int remainingMinutes;
+  RateLimitError(this.remainingMinutes);
+
+  @override
+  String toString() =>
+      plural('tooManyRequestsTryAgainInMinutes', remainingMinutes);
+}
+
+class InvalidURLError extends ObtainiumError {
+  InvalidURLError(String sourceName)
+      : super(tr('invalidURLForSource', args: [sourceName]));
+}
+
+class NoReleasesError extends ObtainiumError {
+  NoReleasesError() : super(tr('noReleaseFound'));
+}
+
+class NoAPKError extends ObtainiumError {
+  NoAPKError() : super(tr('noReleaseFound'));
+}
+
+class NoVersionError extends ObtainiumError {
+  NoVersionError() : super(tr('noVersionFound'));
+}
+
+class UnsupportedURLError extends ObtainiumError {
+  UnsupportedURLError() : super(tr('urlMatchesNoSource'));
+}
+
+class DowngradeError extends ObtainiumError {
+  DowngradeError() : super(tr('cantInstallOlderVersion'));
+}
+
+class IDChangedError extends ObtainiumError {
+  IDChangedError() : super(tr('appIdMismatch'));
+}
+
+class NotImplementedError extends ObtainiumError {
+  NotImplementedError() : super(tr('functionNotImplemented'));
+}
+
+class MultiAppMultiError extends ObtainiumError {
+  Map<String, List<String>> content = {};
+
+  MultiAppMultiError() : super(tr('placeholder'), unexpected: true);
+
+  add(String appId, String string) {
+    var tempIds = content.remove(string);
+    tempIds ??= [];
+    tempIds.add(appId);
+    content.putIfAbsent(string, () => tempIds!);
+  }
+
+  @override
+  String toString() {
+    String finalString = '';
+    for (var e in content.keys) {
+      finalString += '$e: ${content[e].toString()}\n\n';
+    }
+    return finalString;
+  }
+}
+
+showError(dynamic e, BuildContext context) {
+  Provider.of<LogsProvider>(context, listen: false)
+      .add(e.toString(), level: LogLevels.error);
+  if (e is String || (e is ObtainiumError && !e.unexpected)) {
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(content: Text(e.toString())),
+    );
+  } else {
+    showDialog(
+        context: context,
+        builder: (BuildContext ctx) {
+          return AlertDialog(
+            scrollable: true,
+            title: Text(e is MultiAppMultiError
+                ? tr('someErrors')
+                : tr('unexpectedError')),
+            content: Text(e.toString()),
+            actions: [
+              TextButton(
+                  onPressed: () {
+                    Navigator.of(context).pop(null);
+                  },
+                  child: Text(tr('ok'))),
+            ],
+          );
+        });
+  }
+}
+
+String list2FriendlyString(List<String> list) {
+  return list.length == 2
+      ? '${list[0]} ${tr('and')} ${list[1]}'
+      : list
+          .asMap()
+          .entries
+          .map((e) =>
+              e.value +
+              (e.key == list.length - 1
+                  ? ''
+                  : e.key == list.length - 2
+                      ? ', and '
+                      : ', '))
+          .join('');
+}

lib/main.dart

@@ -1,108 +1,187 @@
+import 'dart:io';
+import 'dart:math';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/pages/home.dart';
 import 'package:obtainium/providers/apps_provider.dart';
+import 'package:obtainium/providers/logs_provider.dart';
 import 'package:obtainium/providers/notifications_provider.dart';
 import 'package:obtainium/providers/settings_provider.dart';
 import 'package:obtainium/providers/source_provider.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:provider/provider.dart';
-import 'package:workmanager/workmanager.dart';
 import 'package:dynamic_color/dynamic_color.dart';
 import 'package:device_info_plus/device_info_plus.dart';
+import 'package:android_alarm_manager_plus/android_alarm_manager_plus.dart';
+import 'package:easy_localization/easy_localization.dart';
 
+const String currentVersion = '0.8.2';
 const String currentReleaseTag =
-    'v0.2.3-beta'; // KEEP THIS IN SYNC WITH GITHUB RELEASES
+    'v$currentVersion-beta'; // KEEP THIS IN SYNC WITH GITHUB RELEASES
+
+const int bgUpdateCheckAlarmId = 666;
 
 @pragma('vm:entry-point')
-void bgTaskCallback() {
+Future<void> bgUpdateCheck(int taskId, Map<String, dynamic>? params) async {
-  // Background update checking process
+  LogsProvider logs = LogsProvider();
-  Workmanager().executeTask((task, taskName) async {
+  logs.add(tr('startedBgUpdateTask'));
-    var notificationsProvider = NotificationsProvider();
+  int? ignoreAfterMicroseconds = params?['ignoreAfterMicroseconds'];
-    await notificationsProvider.notify(checkingUpdatesNotification);
+  WidgetsFlutterBinding.ensureInitialized();
+  await AndroidAlarmManager.initialize();
+  DateTime? ignoreAfter = ignoreAfterMicroseconds != null
+      ? DateTime.fromMicrosecondsSinceEpoch(ignoreAfterMicroseconds)
+      : null;
+  logs.add(tr('bgUpdateIgnoreAfterIs', args: [ignoreAfter.toString()]));
+  var notificationsProvider = NotificationsProvider();
+  await notificationsProvider.notify(checkingUpdatesNotification);
+  try {
+    var appsProvider = AppsProvider(forBGTask: true);
+    await notificationsProvider.cancel(ErrorCheckingUpdatesNotification('').id);
+    await appsProvider.loadApps();
+    List<String> existingUpdateIds =
+        appsProvider.findExistingUpdates(installedOnly: true);
+    DateTime nextIgnoreAfter = DateTime.now();
+    String? err;
     try {
-      var appsProvider = AppsProvider();
+      logs.add(tr('startedActualBGUpdateCheck'));
-      await notificationsProvider
+      await appsProvider.checkUpdates(
-          .cancel(ErrorCheckingUpdatesNotification('').id);
+          ignoreAppsCheckedAfter: ignoreAfter, throwErrorsForRetry: true);
-      await appsProvider.loadApps();
-      List<App> updates = await appsProvider.checkUpdates();
-      if (updates.isNotEmpty) {
-        notificationsProvider.notify(UpdateNotification(updates),
-            cancelExisting: true);
-      }
-      return Future.value(true);
     } catch (e) {
-      notificationsProvider.notify(
+      if (e is RateLimitError || e is SocketException) {
-          ErrorCheckingUpdatesNotification(e.toString()),
+        var remainingMinutes = e is RateLimitError ? e.remainingMinutes : 15;
-          cancelExisting: true);
+        logs.add(plural('bgUpdateGotErrorRetryInMinutes', remainingMinutes,
-      return Future.value(false);
+            args: [e.runtimeType.toString()]));
-    } finally {
+        AndroidAlarmManager.oneShot(Duration(minutes: remainingMinutes),
-      await notificationsProvider.cancel(checkingUpdatesNotification.id);
+            Random().nextInt(pow(2, 31) as int), bgUpdateCheck, params: {
+          'ignoreAfterMicroseconds': nextIgnoreAfter.microsecondsSinceEpoch
+        });
+      } else {
+        err = e.toString();
+      }
     }
-  });
+    List<App> newUpdates = appsProvider
+        .findExistingUpdates(installedOnly: true)
+        .where((id) => !existingUpdateIds.contains(id))
+        .map((e) => appsProvider.apps[e]!.app)
+        .toList();
+
+    // TODO: This silent update code doesn't work yet
+    // List<String> silentlyUpdated = await appsProvider
+    //     .downloadAndInstallLatestApp(
+    //         [...newUpdates.map((e) => e.id), ...existingUpdateIds], null);
+    // if (silentlyUpdated.isNotEmpty) {
+    //   newUpdates = newUpdates
+    //       .where((element) => !silentlyUpdated.contains(element.id))
+    //       .toList();
+    //   notificationsProvider.notify(
+    //       SilentUpdateNotification(
+    //           silentlyUpdated.map((e) => appsProvider.apps[e]!.app).toList()),
+    //       cancelExisting: true);
+    // }
+    logs.add(
+        plural('bgCheckFoundUpdatesWillNotifyIfNeeded', newUpdates.length));
+    if (newUpdates.isNotEmpty) {
+      notificationsProvider.notify(UpdateNotification(newUpdates));
+    }
+    if (err != null) {
+      throw err;
+    }
+  } catch (e) {
+    notificationsProvider
+        .notify(ErrorCheckingUpdatesNotification(e.toString()));
+  } finally {
+    logs.add(tr('bgUpdateTaskFinished'));
+    await notificationsProvider.cancel(checkingUpdatesNotification.id);
+  }
 }
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  if ((await DeviceInfoPlugin().androidInfo).version.sdkInt! >= 29) {
+  await EasyLocalization.ensureInitialized();
+  if ((await DeviceInfoPlugin().androidInfo).version.sdkInt >= 29) {
     SystemChrome.setSystemUIOverlayStyle(
       const SystemUiOverlayStyle(systemNavigationBarColor: Colors.transparent),
     );
     SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
   }
-  Workmanager().initialize(
+  await AndroidAlarmManager.initialize();
-    bgTaskCallback,
-  );
   runApp(MultiProvider(
     providers: [
-      ChangeNotifierProvider(
+      ChangeNotifierProvider(create: (context) => AppsProvider()),
-          create: (context) => AppsProvider(
-              shouldLoadApps: true,
-              shouldCheckUpdatesAfterLoad: true,
-              shouldDeleteAPKs: true)),
       ChangeNotifierProvider(create: (context) => SettingsProvider()),
-      Provider(create: (context) => NotificationsProvider())
+      Provider(create: (context) => NotificationsProvider()),
+      Provider(create: (context) => LogsProvider())
     ],
-    child: const MyApp(),
+    child: EasyLocalization(
+        supportedLocales: const [Locale('en')],
+        path: 'assets/translations',
+        fallbackLocale: const Locale('en'),
+        child: const Obtainium()),
   ));
 }
 
 var defaultThemeColour = Colors.deepPurple;
 
-class MyApp extends StatelessWidget {
+class Obtainium extends StatefulWidget {
-  const MyApp({super.key});
+  const Obtainium({super.key});
+
+  @override
+  State<Obtainium> createState() => _ObtainiumState();
+}
+
+class _ObtainiumState extends State<Obtainium> {
+  var existingUpdateInterval = -1;
 
   @override
   Widget build(BuildContext context) {
     SettingsProvider settingsProvider = context.watch<SettingsProvider>();
     AppsProvider appsProvider = context.read<AppsProvider>();
+    LogsProvider logs = context.read<LogsProvider>();
 
     if (settingsProvider.prefs == null) {
       settingsProvider.initializeSettings();
     } else {
-      // Register the background update task according to the user's setting
-      if (settingsProvider.updateInterval > 0) {
-        Workmanager().registerPeriodicTask('bg-update-check', 'bg-update-check',
-            frequency: Duration(minutes: settingsProvider.updateInterval),
-            initialDelay: Duration(minutes: settingsProvider.updateInterval),
-            constraints: Constraints(networkType: NetworkType.connected),
-            existingWorkPolicy: ExistingWorkPolicy.replace);
-      } else {
-        Workmanager().cancelByUniqueName('bg-update-check');
-      }
       bool isFirstRun = settingsProvider.checkAndFlipFirstRun();
       if (isFirstRun) {
+        logs.add(tr('firstRun'));
         // If this is the first run, ask for notification permissions and add Obtainium to the Apps list
         Permission.notification.request();
-        appsProvider.saveApp(App(
+        appsProvider.saveApps([
-            'imranr98_obtainium_${GitHub().host}',
+          App(
-            'https://github.com/ImranR98/Obtainium',
+              obtainiumId,
-            'ImranR98',
+              'https://github.com/ImranR98/Obtainium',
-            'Obtainium',
+              'ImranR98',
-            currentReleaseTag,
+              'Obtainium',
-            currentReleaseTag,
+              currentReleaseTag,
-            [],
+              currentReleaseTag,
-            0));
+              [],
+              0,
+              ['true'],
+              null,
+              false,
+              false,
+              false)
+        ]);
+      }
+      // Register the background update task according to the user's setting
+      if (existingUpdateInterval != settingsProvider.updateInterval) {
+        if (existingUpdateInterval != -1) {
+          logs.add(tr('settingUpdateCheckIntervalTo',
+              args: [settingsProvider.updateInterval.toString()]));
+        }
+        existingUpdateInterval = settingsProvider.updateInterval;
+        if (existingUpdateInterval == 0) {
+          AndroidAlarmManager.cancel(bgUpdateCheckAlarmId);
+        } else {
+          AndroidAlarmManager.periodic(
+              Duration(minutes: existingUpdateInterval),
+              bgUpdateCheckAlarmId,
+              bgUpdateCheck,
+              rescheduleOnReboot: true,
+              wakeup: true);
+        }
       }
     }
 
@@ -123,6 +202,9 @@ class MyApp extends StatelessWidget {
       }
       return MaterialApp(
           title: 'Obtainium',
+          localizationsDelegates: context.localizationDelegates,
+          supportedLocales: context.supportedLocales,
+          locale: context.locale,
           theme: ThemeData(
               useMaterial3: true,
               colorScheme: settingsProvider.theme == ThemeSettings.dark

lib/mass_app_sources/githubstars.dart

@@ -0,0 +1,54 @@
+import 'dart:convert';
+
+import 'package:easy_localization/easy_localization.dart';
+import 'package:http/http.dart';
+import 'package:obtainium/app_sources/github.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/source_provider.dart';
+
+class GitHubStars implements MassAppUrlSource {
+  @override
+  late String name = tr('githubStarredRepos');
+
+  @override
+  late List<String> requiredArgs = [tr('uname')];
+
+  Future<Map<String, String>> getOnePageOfUserStarredUrlsWithDescriptions(
+      String username, int page) async {
+    Response res = await get(Uri.parse(
+        'https://${await GitHub().getCredentialPrefixIfAny()}api.github.com/users/$username/starred?per_page=100&page=$page'));
+    if (res.statusCode == 200) {
+      Map<String, String> urlsWithDescriptions = {};
+      for (var e in (jsonDecode(res.body) as List<dynamic>)) {
+        urlsWithDescriptions.addAll({
+          e['html_url'] as String: e['description'] != null
+              ? e['description'] as String
+              : tr('noDescription')
+        });
+      }
+      return urlsWithDescriptions;
+    } else {
+      var gh = GitHub();
+      gh.rateLimitErrorCheck(res);
+      throw getObtainiumHttpError(res);
+    }
+  }
+
+  @override
+  Future<Map<String, String>> getUrlsWithDescriptions(List<String> args) async {
+    if (args.length != requiredArgs.length) {
+      throw ObtainiumError(tr('wrongArgNum'));
+    }
+    Map<String, String> urlsWithDescriptions = {};
+    var page = 1;
+    while (true) {
+      var pageUrls =
+          await getOnePageOfUserStarredUrlsWithDescriptions(args[0], page++);
+      urlsWithDescriptions.addAll(pageUrls);
+      if (pageUrls.length < 100) {
+        break;
+      }
+    }
+    return urlsWithDescriptions;
+  }
+}

lib/pages/add_app.dart

@@ -1,7 +1,12 @@
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:obtainium/components/custom_app_bar.dart';
+import 'package:obtainium/components/generated_form.dart';
+import 'package:obtainium/components/generated_form_modal.dart';
+import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/pages/app.dart';
+import 'package:obtainium/pages/import_export.dart';
 import 'package:obtainium/providers/apps_provider.dart';
 import 'package:obtainium/providers/settings_provider.dart';
 import 'package:obtainium/providers/source_provider.dart';
@@ -16,143 +21,385 @@ class AddAppPage extends StatefulWidget {
 }
 
 class _AddAppPageState extends State<AddAppPage> {
-  final _formKey = GlobalKey<FormState>();
-  final urlInputController = TextEditingController();
   bool gettingAppInfo = false;
 
+  String userInput = '';
+  String searchQuery = '';
+  AppSource? pickedSource;
+  List<String> sourceSpecificAdditionalData = [];
+  bool sourceSpecificDataIsValid = true;
+  List<String> otherAdditionalData = [];
+  bool otherAdditionalDataIsValid = true;
+
   @override
   Widget build(BuildContext context) {
     SourceProvider sourceProvider = SourceProvider();
+    AppsProvider appsProvider = context.read<AppsProvider>();
+
+    changeUserInput(String input, bool valid, bool isBuilding) {
+      userInput = input;
+      fn() {
+        var source = valid ? sourceProvider.getSource(userInput) : null;
+        if (pickedSource != source) {
+          pickedSource = source;
+          sourceSpecificAdditionalData =
+              source != null ? source.additionalSourceAppSpecificDefaults : [];
+          sourceSpecificDataIsValid = source != null
+              ? sourceProvider.ifSourceAppsRequireAdditionalData(source)
+              : true;
+        }
+      }
+
+      if (isBuilding) {
+        fn();
+      } else {
+        setState(() {
+          fn();
+        });
+      }
+    }
+
+    addApp({bool resetUserInputAfter = false}) async {
+      setState(() {
+        gettingAppInfo = true;
+      });
+      var settingsProvider = context.read<SettingsProvider>();
+      () async {
+        var userPickedTrackOnly = findGeneratedFormValueByKey(
+                pickedSource!.additionalAppSpecificSourceAgnosticFormItems,
+                otherAdditionalData,
+                'trackOnlyFormItemKey') ==
+            'true';
+        var cont = true;
+        if ((userPickedTrackOnly || pickedSource!.enforceTrackOnly) &&
+            await showDialog(
+                    context: context,
+                    builder: (BuildContext ctx) {
+                      return GeneratedFormModal(
+                        title: tr('xIsTrackOnly', args: [
+                          pickedSource!.enforceTrackOnly
+                              ? tr('source')
+                              : tr('app')
+                        ]),
+                        items: const [],
+                        defaultValues: const [],
+                        message:
+                            '${pickedSource!.enforceTrackOnly ? tr('appsFromSourceAreTrackOnly') : tr('youPickedTrackOnly')}\n\n${tr('trackOnlyAppDescription')}',
+                      );
+                    }) ==
+                null) {
+          cont = false;
+        }
+        if (cont) {
+          HapticFeedback.selectionClick();
+          var trackOnly = pickedSource!.enforceTrackOnly || userPickedTrackOnly;
+          App app = await sourceProvider.getApp(
+              pickedSource!, userInput, sourceSpecificAdditionalData,
+              trackOnly: trackOnly);
+          if (!trackOnly) {
+            await settingsProvider.getInstallPermission();
+          }
+          // Only download the APK here if you need to for the package ID
+          if (sourceProvider.isTempId(app.id) && !app.trackOnly) {
+            // ignore: use_build_context_synchronously
+            var apkUrl = await appsProvider.confirmApkUrl(app, context);
+            if (apkUrl == null) {
+              throw ObtainiumError(tr('cancelled'));
+            }
+            app.preferredApkIndex = app.apkUrls.indexOf(apkUrl);
+            // ignore: use_build_context_synchronously
+            var downloadedApk = await appsProvider.downloadApp(app, context);
+            app.id = downloadedApk.appId;
+          }
+          if (appsProvider.apps.containsKey(app.id)) {
+            throw ObtainiumError(tr('appAlreadyAdded'));
+          }
+          if (app.trackOnly) {
+            app.installedVersion = app.latestVersion;
+          }
+          await appsProvider.saveApps([app]);
+
+          return app;
+        }
+      }()
+          .then((app) {
+        if (app != null) {
+          Navigator.push(context,
+              MaterialPageRoute(builder: (context) => AppPage(appId: app.id)));
+        }
+      }).catchError((e) {
+        showError(e, context);
+      }).whenComplete(() {
+        setState(() {
+          gettingAppInfo = false;
+          if (resetUserInputAfter) {
+            changeUserInput('', false, true);
+          }
+        });
+      });
+    }
+
     return Scaffold(
         backgroundColor: Theme.of(context).colorScheme.surface,
         body: CustomScrollView(slivers: <Widget>[
-          const CustomAppBar(title: 'Add App'),
+          CustomAppBar(title: tr('addApp')),
           SliverFillRemaining(
-              hasScrollBody: false,
+            child: Padding(
-              child: Center(
+                padding: const EdgeInsets.all(16),
-                child: Form(
+                child: Column(
-                    key: _formKey,
+                    crossAxisAlignment: CrossAxisAlignment.stretch,
-                    child: Column(
+                    children: [
-                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      Row(
-                      crossAxisAlignment: CrossAxisAlignment.stretch,
+                        children: [
-                      children: [
+                          Expanded(
-                        Container(),
+                              child: GeneratedForm(
-                        Padding(
+                                  items: [
-                          padding: const EdgeInsets.all(16),
+                                    [
-                          child: Column(
+                                      GeneratedFormItem(
-                            crossAxisAlignment: CrossAxisAlignment.stretch,
+                                          label: tr('appSourceURL'),
-                            children: [
+                                          additionalValidators: [
-                              TextFormField(
+                                            (value) {
-                                decoration: const InputDecoration(
+                                              try {
-                                    hintText:
+                                                sourceProvider
-                                        'https://github.com/Author/Project',
+                                                    .getSource(value ?? '')
-                                    helperText: 'Enter the App source URL'),
+                                                    .standardizeURL(
-                                controller: urlInputController,
+                                                        preStandardizeUrl(
-                                validator: (value) {
+                                                            value ?? ''));
-                                  if (value == null ||
+                                              } catch (e) {
-                                      value.isEmpty ||
+                                                return e is String
-                                      Uri.tryParse(value) == null) {
+                                                    ? e
-                                    return 'Please enter a supported source URL';
+                                                    : e is ObtainiumError
-                                  }
+                                                        ? e.toString()
-                                  return null;
+                                                        : tr('error');
-                                },
-                              ),
-                              Padding(
-                                padding:
-                                    const EdgeInsets.symmetric(vertical: 16.0),
-                                child: ElevatedButton(
-                                  onPressed: gettingAppInfo
-                                      ? null
-                                      : () {
-                                          HapticFeedback.selectionClick();
-                                          if (_formKey.currentState!
-                                              .validate()) {
-                                            setState(() {
-                                              gettingAppInfo = true;
-                                            });
-                                            sourceProvider
-                                                .getApp(urlInputController
-                                                    .value.text)
-                                                .then((app) {
-                                              var appsProvider =
-                                                  context.read<AppsProvider>();
-                                              var settingsProvider = context
-                                                  .read<SettingsProvider>();
-                                              if (appsProvider.apps
-                                                  .containsKey(app.id)) {
-                                                throw 'App already added';
                                               }
-                                              settingsProvider
+                                              return null;
-                                                  .getInstallPermission()
+                                            }
-                                                  .then((_) {
+                                          ])
-                                                appsProvider
+                                    ]
-                                                    .saveApp(app)
+                                  ],
-                                                    .then((_) {
+                                  onValueChanges: (values, valid, isBuilding) {
-                                                  urlInputController.clear();
+                                    changeUserInput(
-                                                  Navigator.push(
+                                        values[0], valid, isBuilding);
-                                                      context,
+                                  },
-                                                      MaterialPageRoute(
+                                  defaultValues: const [])),
-                                                          builder: (context) =>
+                          const SizedBox(
-                                                              AppPage(
+                            width: 16,
-                                                                  appId:
-                                                                      app.id)));
-                                                });
-                                              });
-                                            }).catchError((e) {
-                                              ScaffoldMessenger.of(context)
-                                                  .showSnackBar(
-                                                SnackBar(
-                                                    content:
-                                                        Text(e.toString())),
-                                              );
-                                            }).whenComplete(() {
-                                              setState(() {
-                                                gettingAppInfo = false;
-                                              });
-                                            });
-                                          }
-                                        },
-                                  child: const Text('Add'),
-                                ),
-                              ),
-                            ],
                           ),
+                          gettingAppInfo
+                              ? const CircularProgressIndicator()
+                              : ElevatedButton(
+                                  onPressed: gettingAppInfo ||
+                                          pickedSource == null ||
+                                          (pickedSource!
+                                                  .additionalSourceAppSpecificFormItems
+                                                  .isNotEmpty &&
+                                              !sourceSpecificDataIsValid) ||
+                                          (pickedSource!
+                                                  .additionalAppSpecificSourceAgnosticDefaults
+                                                  .isNotEmpty &&
+                                              !otherAdditionalDataIsValid)
+                                      ? null
+                                      : addApp,
+                                  child: Text(tr('add')))
+                        ],
+                      ),
+                      if (sourceProvider.sources
+                              .where((e) => e.canSearch)
+                              .isNotEmpty &&
+                          pickedSource == null &&
+                          userInput.isEmpty)
+                        const SizedBox(
+                          height: 16,
                         ),
+                      if (sourceProvider.sources
+                              .where((e) => e.canSearch)
+                              .isNotEmpty &&
+                          pickedSource == null &&
+                          userInput.isEmpty)
+                        Row(
+                          children: [
+                            Expanded(
+                              child: GeneratedForm(
+                                  items: [
+                                    [
+                                      GeneratedFormItem(
+                                          label: tr('searchSomeSourcesLabel'),
+                                          required: false),
+                                    ]
+                                  ],
+                                  onValueChanges: (values, valid, isBuilding) {
+                                    if (values.isNotEmpty && valid) {
+                                      setState(() {
+                                        searchQuery = values[0].trim();
+                                      });
+                                    }
+                                  },
+                                  defaultValues: const ['']),
+                            ),
+                            const SizedBox(
+                              width: 16,
+                            ),
+                            ElevatedButton(
+                                onPressed: searchQuery.isEmpty || gettingAppInfo
+                                    ? null
+                                    : () {
+                                        Future.wait(sourceProvider.sources
+                                                .where((e) => e.canSearch)
+                                                .map((e) =>
+                                                    e.search(searchQuery)))
+                                            .then((results) async {
+                                          // Interleave results instead of simple reduce
+                                          Map<String, String> res = {};
+                                          var si = 0;
+                                          var done = false;
+                                          while (!done) {
+                                            done = true;
+                                            for (var r in results) {
+                                              if (r.length > si) {
+                                                done = false;
+                                                res.addEntries(
+                                                    [r.entries.elementAt(si)]);
+                                              }
+                                            }
+                                            si++;
+                                          }
+                                          List<String>? selectedUrls = res
+                                                  .isEmpty
+                                              ? []
+                                              : await showDialog<List<String>?>(
+                                                  context: context,
+                                                  builder: (BuildContext ctx) {
+                                                    return UrlSelectionModal(
+                                                      urlsWithDescriptions: res,
+                                                      selectedByDefault: false,
+                                                      onlyOneSelectionAllowed:
+                                                          true,
+                                                    );
+                                                  });
+                                          if (selectedUrls != null &&
+                                              selectedUrls.isNotEmpty) {
+                                            changeUserInput(
+                                                selectedUrls[0], true, true);
+                                            addApp(resetUserInputAfter: true);
+                                          }
+                                        }).catchError((e) {
+                                          showError(e, context);
+                                        });
+                                      },
+                                child: Text(tr('search')))
+                          ],
+                        ),
+                      if (pickedSource != null &&
+                          (pickedSource!.additionalSourceAppSpecificDefaults
+                                  .isNotEmpty ||
+                              pickedSource!
+                                  .additionalAppSpecificSourceAgnosticFormItems
+                                  .where((e) => pickedSource!.enforceTrackOnly
+                                      ? e.key != 'trackOnlyFormItemKey'
+                                      : true)
+                                  .map((e) => [e])
+                                  .isNotEmpty))
                         Column(
-                            crossAxisAlignment: CrossAxisAlignment.center,
+                          crossAxisAlignment: CrossAxisAlignment.stretch,
-                            children: [
+                          children: [
-                              const Text(
+                            const Divider(
-                                'Supported Sources:',
+                              height: 64,
-                                // style: TextStyle(fontWeight: FontWeight.bold),
+                            ),
-                                // style: Theme.of(context).textTheme.bodySmall,
+                            Text(
+                                tr('additionalOptsFor', args: [
+                                  pickedSource?.runtimeType.toString() ??
+                                      tr('source')
+                                ]),
+                                style: TextStyle(
+                                    color:
+                                        Theme.of(context).colorScheme.primary)),
+                            const SizedBox(
+                              height: 16,
+                            ),
+                            if (pickedSource!
+                                .additionalSourceAppSpecificFormItems
+                                .isNotEmpty)
+                              GeneratedForm(
+                                  items: pickedSource!
+                                      .additionalSourceAppSpecificFormItems,
+                                  onValueChanges: (values, valid, isBuilding) {
+                                    if (isBuilding) {
+                                      sourceSpecificAdditionalData = values;
+                                      sourceSpecificDataIsValid = valid;
+                                    } else {
+                                      setState(() {
+                                        sourceSpecificAdditionalData = values;
+                                        sourceSpecificDataIsValid = valid;
+                                      });
+                                    }
+                                  },
+                                  defaultValues: pickedSource!
+                                      .additionalSourceAppSpecificDefaults),
+                            if (pickedSource!
+                                .additionalAppSpecificSourceAgnosticDefaults
+                                .isNotEmpty)
+                              const SizedBox(
+                                height: 8,
+                              ),
+                            GeneratedForm(
+                                items: pickedSource!
+                                    .additionalAppSpecificSourceAgnosticFormItems
+                                    .where((e) => pickedSource!.enforceTrackOnly
+                                        ? e.key != 'trackOnlyFormItemKey'
+                                        : true)
+                                    .map((e) => [e])
+                                    .toList(),
+                                onValueChanges: (values, valid, isBuilding) {
+                                  if (isBuilding) {
+                                    otherAdditionalData = values;
+                                    otherAdditionalDataIsValid = valid;
+                                  } else {
+                                    setState(() {
+                                      otherAdditionalData = values;
+                                      otherAdditionalDataIsValid = valid;
+                                    });
+                                  }
+                                },
+                                defaultValues: pickedSource!
+                                    .additionalAppSpecificSourceAgnosticDefaults),
+                          ],
+                        )
+                      else
+                        Expanded(
+                            child: Column(
+                                crossAxisAlignment: CrossAxisAlignment.center,
+                                mainAxisAlignment: MainAxisAlignment.center,
+                                children: [
+                              const SizedBox(
+                                height: 48,
+                              ),
+                              Text(
+                                tr('supportedSourcesBelow'),
                               ),
                               const SizedBox(
                                 height: 8,
                               ),
-                              ...sourceProvider
+                              ...sourceProvider.sources
-                                  .getSourceHosts()
                                   .map((e) => GestureDetector(
                                       onTap: () {
-                                        launchUrlString('https://$e',
+                                        launchUrlString('https://${e.host}',
                                             mode:
                                                 LaunchMode.externalApplication);
                                       },
                                       child: Text(
-                                        e,
+                                        '${e.runtimeType.toString()}${e.enforceTrackOnly ? ' ${tr('trackOnlyInBrackets')}' : ''}${e.canSearch ? ' ${tr('searchableInBrackets')}' : ''}',
                                         style: const TextStyle(
                                             decoration:
                                                 TextDecoration.underline,
                                             fontStyle: FontStyle.italic),
                                       )))
                                   .toList()
-                            ]),
+                            ])),
-                        if (gettingAppInfo)
+                      const SizedBox(
-                          const LinearProgressIndicator()
+                        height: 8,
-                        else
+                      ),
-                          Container(),
+                    ])),
-                      ],
+          )
-                    )),
-              ))
         ]));
   }
 }

lib/pages/app.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'package:obtainium/components/custom_app_bar.dart';
+import 'package:obtainium/components/generated_form_modal.dart';
+import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/providers/apps_provider.dart';
 import 'package:obtainium/providers/settings_provider.dart';
+import 'package:obtainium/providers/source_provider.dart';
 import 'package:url_launcher/url_launcher_string.dart';
 import 'package:webview_flutter/webview_flutter.dart';
 import 'package:provider/provider.dart';
@@ -17,73 +19,115 @@ class AppPage extends StatefulWidget {
 }
 
 class _AppPageState extends State<AppPage> {
+  AppInMemory? prevApp;
+
   @override
   Widget build(BuildContext context) {
     var appsProvider = context.watch<AppsProvider>();
     var settingsProvider = context.watch<SettingsProvider>();
+    getUpdate(String id) {
+      appsProvider.checkUpdate(id).catchError((e) {
+        showError(e, context);
+      });
+    }
+
+    var sourceProvider = SourceProvider();
     AppInMemory? app = appsProvider.apps[widget.appId];
-    if (app?.app.installedVersion != null) {
+    var source = app != null ? sourceProvider.getSource(app.app.url) : null;
-      appsProvider.getUpdate(app!.app.id);
+    if (!appsProvider.areDownloadsRunning() && prevApp == null && app != null) {
+      prevApp = app;
+      getUpdate(app.app.id);
     }
     return Scaffold(
+      appBar: settingsProvider.showAppWebpage ? AppBar() : null,
       backgroundColor: Theme.of(context).colorScheme.surface,
-      body: CustomScrollView(slivers: <Widget>[
+      body: RefreshIndicator(
-        CustomAppBar(title: '${app?.app.name}'),
-        SliverFillRemaining(
           child: settingsProvider.showAppWebpage
               ? WebView(
+                  backgroundColor: Theme.of(context).colorScheme.background,
                   initialUrl: app?.app.url,
                   javascriptMode: JavascriptMode.unrestricted,
                 )
-              : Column(
+              : CustomScrollView(
-                  mainAxisAlignment: MainAxisAlignment.center,
+                  slivers: [
-                  crossAxisAlignment: CrossAxisAlignment.stretch,
+                    SliverFillRemaining(
-                  children: [
+                        child: Column(
-                    Text(
+                      mainAxisAlignment: MainAxisAlignment.center,
-                      app?.app.name ?? 'App',
+                      crossAxisAlignment: CrossAxisAlignment.stretch,
-                      textAlign: TextAlign.center,
+                      children: [
-                      style: Theme.of(context).textTheme.displayLarge,
+                        app?.installedInfo != null
-                    ),
+                            ? Row(
-                    Text(
+                                mainAxisAlignment: MainAxisAlignment.center,
-                      'By ${app?.app.author ?? 'Unknown'}',
+                                children: [
-                      textAlign: TextAlign.center,
+                                    Image.memory(
-                      style: Theme.of(context).textTheme.headlineMedium,
+                                      app!.installedInfo!.icon!,
-                    ),
+                                      height: 150,
-                    const SizedBox(
+                                      gaplessPlayback: true,
-                      height: 32,
+                                    )
-                    ),
+                                  ])
-                    GestureDetector(
+                            : Container(),
-                        onTap: () {
+                        const SizedBox(
-                          if (app?.app.url != null) {
+                          height: 25,
-                            launchUrlString(app?.app.url ?? '',
+                        ),
-                                mode: LaunchMode.externalApplication);
+                        Text(
-                          }
+                          app?.installedInfo?.name ?? app?.app.name ?? 'App',
-                        },
+                          textAlign: TextAlign.center,
-                        child: Text(
+                          style: Theme.of(context).textTheme.displayLarge,
-                          app?.app.url ?? '',
+                        ),
+                        Text(
+                          'By ${app?.app.author ?? 'Unknown'}',
+                          textAlign: TextAlign.center,
+                          style: Theme.of(context).textTheme.headlineMedium,
+                        ),
+                        const SizedBox(
+                          height: 32,
+                        ),
+                        GestureDetector(
+                            onTap: () {
+                              if (app?.app.url != null) {
+                                launchUrlString(app?.app.url ?? '',
+                                    mode: LaunchMode.externalApplication);
+                              }
+                            },
+                            child: Text(
+                              app?.app.url ?? '',
+                              textAlign: TextAlign.center,
+                              style: const TextStyle(
+                                  decoration: TextDecoration.underline,
+                                  fontStyle: FontStyle.italic,
+                                  fontSize: 12),
+                            )),
+                        const SizedBox(
+                          height: 32,
+                        ),
+                        Text(
+                          'Latest Version: ${app?.app.latestVersion ?? 'Unknown'}',
+                          textAlign: TextAlign.center,
+                          style: Theme.of(context).textTheme.bodyLarge,
+                        ),
+                        Text(
+                          'Installed Version: ${app?.app.installedVersion ?? 'None'}${app?.app.trackOnly == true ? ' (Estimate)\n\nApp is Track-Only' : ''}',
+                          textAlign: TextAlign.center,
+                          style: Theme.of(context).textTheme.bodyLarge,
+                        ),
+                        const SizedBox(
+                          height: 32,
+                        ),
+                        Text(
+                          'Last Update Check: ${app?.app.lastUpdateCheck == null ? 'Never' : '\n${app?.app.lastUpdateCheck?.toLocal()}'}',
                           textAlign: TextAlign.center,
                           style: const TextStyle(
-                              decoration: TextDecoration.underline,
+                              fontStyle: FontStyle.italic, fontSize: 12),
-                              fontStyle: FontStyle.italic,
+                        )
-                              fontSize: 12),
+                      ],
-                        )),
+                    )),
-                    const SizedBox(
-                      height: 32,
-                    ),
-                    Text(
-                      'Latest Version: ${app?.app.latestVersion ?? 'Unknown'}',
-                      textAlign: TextAlign.center,
-                      style: Theme.of(context).textTheme.bodyLarge,
-                    ),
-                    Text(
-                      'Installed Version: ${app?.app.installedVersion ?? 'None'}',
-                      textAlign: TextAlign.center,
-                      style: Theme.of(context).textTheme.bodyLarge,
-                    ),
                   ],
                 ),
-        ),
+          onRefresh: () async {
-      ]),
+            if (app != null) {
+              getUpdate(app.app.id);
+            }
+          }),
       bottomSheet: Padding(
           padding: EdgeInsets.fromLTRB(
               0, 0, 0, MediaQuery.of(context).padding.bottom),
@@ -95,98 +139,119 @@ class _AppPageState extends State<AppPage> {
                   child: Row(
                       mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                       children: [
-                        if (app?.app.installedVersion != app?.app.latestVersion)
+                        if (app?.app.installedVersion != null &&
+                            app?.app.trackOnly == false &&
+                            app?.app.installedVersion !=
+                                app?.app.latestVersion &&
+                            app?.app.enhancedVersionDetection != true)
                           IconButton(
-                              onPressed: () {
+                              onPressed: app?.downloadProgress != null
-                                showDialog(
+                                  ? null
-                                    context: context,
+                                  : () {
-                                    builder: (BuildContext ctx) {
+                                      showDialog(
-                                      return AlertDialog(
+                                          context: context,
-                                        title: Text(
+                                          builder: (BuildContext ctx) {
-                                            'App Already ${app?.app.installedVersion == null ? 'Installed' : 'Updated'}?'),
+                                            return AlertDialog(
-                                        actions: [
+                                              title: const Text(
-                                          TextButton(
+                                                  'App Already up to Date?'),
-                                              onPressed: () {
+                                              actions: [
-                                                Navigator.of(context).pop();
+                                                TextButton(
-                                              },
+                                                    onPressed: () {
-                                              child: const Text('No')),
+                                                      Navigator.of(context)
-                                          TextButton(
+                                                          .pop();
-                                              onPressed: () {
+                                                    },
-                                                HapticFeedback.selectionClick();
+                                                    child: const Text('No')),
-                                                var updatedApp = app?.app;
+                                                TextButton(
-                                                if (updatedApp != null) {
+                                                    onPressed: () {
-                                                  updatedApp.installedVersion =
+                                                      HapticFeedback
-                                                      updatedApp.latestVersion;
+                                                          .selectionClick();
-                                                  appsProvider
+                                                      var updatedApp = app?.app;
-                                                      .saveApp(updatedApp);
+                                                      if (updatedApp != null) {
-                                                }
+                                                        updatedApp
-                                                Navigator.of(context).pop();
+                                                                .installedVersion =
-                                              },
+                                                            updatedApp
-                                              child: const Text(
+                                                                .latestVersion;
-                                                  'Yes, Mark as Installed'))
+                                                        appsProvider.saveApps(
-                                        ],
+                                                            [updatedApp]);
-                                      );
+                                                      }
-                                    });
+                                                      Navigator.of(context)
-                              },
+                                                          .pop();
-                              tooltip: 'Mark as Installed',
+                                                    },
-                              icon: const Icon(Icons.done))
+                                                    child: const Text(
-                        else
+                                                        'Yes, Mark as Updated'))
+                                              ],
+                                            );
+                                          });
+                                    },
+                              tooltip: 'Mark as Updated',
+                              icon: const Icon(Icons.done)),
+                        if (source != null &&
+                            source.additionalSourceAppSpecificFormItems
+                                .isNotEmpty)
                           IconButton(
-                              onPressed: () {
+                              onPressed: app?.downloadProgress != null
-                                showDialog(
+                                  ? null
-                                    context: context,
+                                  : () {
-                                    builder: (BuildContext ctx) {
+                                      showDialog<List<String>>(
-                                      return AlertDialog(
+                                          context: context,
-                                        title: const Text('App Not Installed?'),
+                                          builder: (BuildContext ctx) {
-                                        actions: [
+                                            return GeneratedFormModal(
-                                          TextButton(
+                                                title: 'Additional Options',
-                                              onPressed: () {
+                                                items: source
-                                                Navigator.of(context).pop();
+                                                    .additionalSourceAppSpecificFormItems,
-                                              },
+                                                defaultValues: app != null
-                                              child: const Text('No')),
+                                                    ? app.app.additionalData
-                                          TextButton(
+                                                    : source
-                                              onPressed: () {
+                                                        .additionalSourceAppSpecificDefaults);
-                                                HapticFeedback.selectionClick();
+                                          }).then((values) {
-                                                var updatedApp = app?.app;
+                                        if (app != null && values != null) {
-                                                if (updatedApp != null) {
+                                          var changedApp = app.app;
-                                                  updatedApp.installedVersion =
+                                          changedApp.additionalData = values;
-                                                      null;
+                                          appsProvider.saveApps(
-                                                  appsProvider
+                                              [changedApp]).then((value) {
-                                                      .saveApp(updatedApp);
+                                            getUpdate(changedApp.id);
-                                                }
+                                          });
-                                                Navigator.of(context).pop();
+                                        }
-                                              },
+                                      });
-                                              child: const Text(
+                                    },
-                                                  'Yes, Mark as Not Installed'))
+                              tooltip: 'Additional Options',
-                                        ],
+                              icon: const Icon(Icons.settings)),
-                                      );
-                                    });
-                              },
-                              tooltip: 'Mark as Not Installed',
-                              icon: const Icon(Icons.no_cell_outlined)),
                         const SizedBox(width: 16.0),
                         Expanded(
                             child: ElevatedButton(
                                 onPressed: (app?.app.installedVersion == null ||
-                                            appsProvider
+                                            app?.app.installedVersion !=
-                                                .checkAppObjectForUpdate(
+                                                app?.app.latestVersion) &&
-                                                    app!.app)) &&
                                         !appsProvider.areDownloadsRunning()
                                     ? () {
                                         HapticFeedback.heavyImpact();
-                                        appsProvider
+                                        () async {
-                                            .downloadAndInstallLatestApp(
+                                          if (app?.app.trackOnly != true) {
-                                                [app!.app.id],
+                                            await settingsProvider
-                                                context).then((res) {
+                                                .getInstallPermission();
-                                          if (res && mounted) {
-                                            Navigator.of(context).pop();
                                           }
+                                        }()
+                                            .then((value) {
+                                          appsProvider
+                                              .downloadAndInstallLatestApps(
+                                                  [app!.app.id],
+                                                  context).then((res) {
+                                            if (res.isNotEmpty && mounted) {
+                                              Navigator.of(context).pop();
+                                            }
+                                          });
+                                        }).catchError((e) {
+                                          showError(e, context);
                                         });
                                       }
                                     : null,
                                 child: Text(app?.app.installedVersion == null
-                                    ? 'Install'
+                                    ? app?.app.trackOnly == false
-                                    : 'Update'))),
+                                        ? 'Install'
+                                        : 'Mark Installed'
+                                    : app?.app.trackOnly == false
+                                        ? 'Update'
+                                        : 'Mark Updated'))),
                         const SizedBox(width: 16.0),
                         ElevatedButton(
                           onPressed: app?.downloadProgress != null
@@ -198,15 +263,14 @@ class _AppPageState extends State<AppPage> {
                                         return AlertDialog(
                                           title: const Text('Remove App?'),
                                           content: Text(
-                                              'This will remove \'${app?.app.name}\' from Obtainium.${app?.app.installedVersion != null ? '\n\nNote that while Obtainium will no longer track its updates, the App will remain installed.' : ''}'),
+                                              'This will remove \'${app?.installedInfo?.name ?? app?.app.name}\' from Obtainium.${app?.app.installedVersion != null ? '\n\nNote that while Obtainium will no longer track its updates, the App will remain installed.' : ''}'),
                                           actions: [
                                             TextButton(
                                                 onPressed: () {
                                                   HapticFeedback
                                                       .selectionClick();
-                                                  appsProvider
+                                                  appsProvider.removeApps(
-                                                      .removeApp(app!.app.id)
+                                                      [app!.app.id]).then((_) {
-                                                      .then((_) {
                                                     int count = 0;
                                                     Navigator.of(context)
                                                         .popUntil((_) =>

lib/pages/apps.dart

@@ -1,99 +1,752 @@
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:obtainium/components/custom_app_bar.dart';
+import 'package:obtainium/components/generated_form.dart';
+import 'package:obtainium/components/generated_form_modal.dart';
+import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/pages/app.dart';
 import 'package:obtainium/providers/apps_provider.dart';
 import 'package:obtainium/providers/settings_provider.dart';
+import 'package:obtainium/providers/source_provider.dart';
 import 'package:provider/provider.dart';
+import 'package:share_plus/share_plus.dart';
+import 'package:url_launcher/url_launcher_string.dart';
 
 class AppsPage extends StatefulWidget {
   const AppsPage({super.key});
 
   @override
-  State<AppsPage> createState() => _AppsPageState();
+  State<AppsPage> createState() => AppsPageState();
 }
 
-class _AppsPageState extends State<AppsPage> {
+class AppsPageState extends State<AppsPage> {
+  AppsFilter? filter;
+  var updatesOnlyFilter =
+      AppsFilter(includeUptodate: false, includeNonInstalled: false);
+  Set<App> selectedApps = {};
+  DateTime? refreshingSince;
+
+  clearSelected() {
+    if (selectedApps.isNotEmpty) {
+      setState(() {
+        selectedApps.clear();
+      });
+      return true;
+    }
+    return false;
+  }
+
+  selectThese(List<App> apps) {
+    if (selectedApps.isEmpty) {
+      setState(() {
+        for (var a in apps) {
+          selectedApps.add(a);
+        }
+      });
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     var appsProvider = context.watch<AppsProvider>();
     var settingsProvider = context.watch<SettingsProvider>();
-    var existingUpdateAppIds = appsProvider.getExistingUpdates();
     var sortedApps = appsProvider.apps.values.toList();
+    var currentFilterIsUpdatesOnly =
+        filter?.isIdenticalTo(updatesOnlyFilter) ?? false;
+
+    selectedApps = selectedApps
+        .where((element) => sortedApps.map((e) => e.app).contains(element))
+        .toSet();
+
+    toggleAppSelected(App app) {
+      setState(() {
+        if (selectedApps.contains(app)) {
+          selectedApps.remove(app);
+        } else {
+          selectedApps.add(app);
+        }
+      });
+    }
+
+    if (filter != null) {
+      sortedApps = sortedApps.where((app) {
+        if (app.app.installedVersion == app.app.latestVersion &&
+            !(filter!.includeUptodate)) {
+          return false;
+        }
+        if (app.app.installedVersion == null &&
+            !(filter!.includeNonInstalled)) {
+          return false;
+        }
+        if (filter!.nameFilter.isEmpty && filter!.authorFilter.isEmpty) {
+          return true;
+        }
+        List<String> nameTokens = filter!.nameFilter
+            .split(' ')
+            .where((element) => element.trim().isNotEmpty)
+            .toList();
+        List<String> authorTokens = filter!.authorFilter
+            .split(' ')
+            .where((element) => element.trim().isNotEmpty)
+            .toList();
+
+        for (var t in nameTokens) {
+          var name = app.installedInfo?.name ?? app.app.name;
+          if (!name.toLowerCase().contains(t.toLowerCase())) {
+            return false;
+          }
+        }
+        for (var t in authorTokens) {
+          if (!app.app.author.toLowerCase().contains(t.toLowerCase())) {
+            return false;
+          }
+        }
+        return true;
+      }).toList();
+    }
+
     sortedApps.sort((a, b) {
+      var nameA = a.installedInfo?.name ?? a.app.name;
+      var nameB = b.installedInfo?.name ?? b.app.name;
       int result = 0;
       if (settingsProvider.sortColumn == SortColumnSettings.authorName) {
-        result =
+        result = (a.app.author + nameA).compareTo(b.app.author + nameB);
-            (a.app.author + a.app.name).compareTo(b.app.author + b.app.name);
       } else if (settingsProvider.sortColumn == SortColumnSettings.nameAuthor) {
-        result =
+        result = (nameA + a.app.author).compareTo(nameB + b.app.author);
-            (a.app.name + a.app.author).compareTo(b.app.name + b.app.author);
       }
       return result;
     });
-    if (settingsProvider.sortOrder == SortOrderSettings.ascending) {
+
+    if (settingsProvider.sortOrder == SortOrderSettings.descending) {
       sortedApps = sortedApps.reversed.toList();
     }
 
+    var existingUpdates = appsProvider.findExistingUpdates(installedOnly: true);
+
+    var existingUpdateIdsAllOrSelected = existingUpdates
+        .where((element) => selectedApps.isEmpty
+            ? sortedApps.where((a) => a.app.id == element).isNotEmpty
+            : selectedApps.map((e) => e.id).contains(element))
+        .toList();
+    var newInstallIdsAllOrSelected = appsProvider
+        .findExistingUpdates(nonInstalledOnly: true)
+        .where((element) => selectedApps.isEmpty
+            ? sortedApps.where((a) => a.app.id == element).isNotEmpty
+            : selectedApps.map((e) => e.id).contains(element))
+        .toList();
+
+    List<String> trackOnlyUpdateIdsAllOrSelected = [];
+    existingUpdateIdsAllOrSelected = existingUpdateIdsAllOrSelected.where((id) {
+      if (appsProvider.apps[id]!.app.trackOnly) {
+        trackOnlyUpdateIdsAllOrSelected.add(id);
+        return false;
+      }
+      return true;
+    }).toList();
+    newInstallIdsAllOrSelected = newInstallIdsAllOrSelected.where((id) {
+      if (appsProvider.apps[id]!.app.trackOnly) {
+        trackOnlyUpdateIdsAllOrSelected.add(id);
+        return false;
+      }
+      return true;
+    }).toList();
+
+    if (settingsProvider.pinUpdates) {
+      var temp = [];
+      sortedApps = sortedApps.where((sa) {
+        if (existingUpdates.contains(sa.app.id)) {
+          temp.add(sa);
+          return false;
+        }
+        return true;
+      }).toList();
+      sortedApps = [...temp, ...sortedApps];
+    }
+
+    var tempPinned = [];
+    var tempNotPinned = [];
+    for (var a in sortedApps) {
+      if (a.app.pinned) {
+        tempPinned.add(a);
+      } else {
+        tempNotPinned.add(a);
+      }
+    }
+    sortedApps = [...tempPinned, ...tempNotPinned];
+
     return Scaffold(
-        backgroundColor: Theme.of(context).colorScheme.surface,
+      backgroundColor: Theme.of(context).colorScheme.surface,
-        floatingActionButton: existingUpdateAppIds.isEmpty
+      body: RefreshIndicator(
-            ? null
+          onRefresh: () {
-            : ElevatedButton.icon(
+            HapticFeedback.lightImpact();
-                onPressed: appsProvider.areDownloadsRunning()
+            setState(() {
-                    ? null
+              refreshingSince = DateTime.now();
-                    : () {
+            });
-                        HapticFeedback.heavyImpact();
+            return appsProvider.checkUpdates().catchError((e) {
-                        settingsProvider.getInstallPermission().then((_) {
+              showError(e, context);
-                          appsProvider.downloadAndInstallLatestApp(
+            }).whenComplete(() {
-                              existingUpdateAppIds, context);
+              setState(() {
-                        });
+                refreshingSince = null;
-                      },
+              });
-                icon: const Icon(Icons.install_mobile_outlined),
+            });
-                label: const Text('Install All')),
+          },
-        body: RefreshIndicator(
+          child: CustomScrollView(slivers: <Widget>[
-            onRefresh: () {
+            CustomAppBar(title: tr('appsString')),
-              HapticFeedback.lightImpact();
+            if (appsProvider.loadingApps || sortedApps.isEmpty)
-              return appsProvider.checkUpdates();
+              SliverFillRemaining(
-            },
+                  child: Center(
-            child: CustomScrollView(slivers: <Widget>[
+                      child: appsProvider.loadingApps
-              const CustomAppBar(title: 'Apps'),
+                          ? const CircularProgressIndicator()
-              if (appsProvider.loadingApps || appsProvider.apps.isEmpty)
+                          : Text(
-                SliverFillRemaining(
+                              appsProvider.apps.isEmpty
-                    child: Center(
+                                  ? tr('noApps')
-                        child: appsProvider.loadingApps
+                                  : tr('noAppsForFilter'),
-                            ? const CircularProgressIndicator()
+                              style: Theme.of(context).textTheme.headlineMedium,
-                            : Text(
+                              textAlign: TextAlign.center,
-                                'No Apps',
+                            ))),
-                                style:
+            if (refreshingSince != null)
-                                    Theme.of(context).textTheme.headlineMedium,
+              SliverToBoxAdapter(
-                              ))),
+                child: LinearProgressIndicator(
-              SliverList(
+                  value: appsProvider.apps.values
-                  delegate: SliverChildBuilderDelegate(
+                          .where((element) => !(element.app.lastUpdateCheck
-                      (BuildContext context, int index) {
+                                  ?.isBefore(refreshingSince!) ??
-                return ListTile(
+                              true))
-                  title: Text(
+                          .length /
-                      '${sortedApps[index].app.author}/${sortedApps[index].app.name}'),
+                      appsProvider.apps.length,
-                  subtitle: Text(sortedApps[index].app.installedVersion ??
+                ),
-                      'Not Installed'),
+              ),
-                  trailing: sortedApps[index].downloadProgress != null
+            SliverList(
-                      ? Text(
+                delegate: SliverChildBuilderDelegate(
-                          'Downloading - ${sortedApps[index].downloadProgress?.toInt()}%')
+                    (BuildContext context, int index) {
-                      : (sortedApps[index].app.installedVersion != null &&
+              String? changesUrl = SourceProvider()
-                              sortedApps[index].app.installedVersion !=
+                  .getSource(sortedApps[index].app.url)
-                                  sortedApps[index].app.latestVersion
+                  .changeLogPageFromStandardUrl(sortedApps[index].app.url);
-                          ? const Text('Update Available')
+              return ListTile(
-                          : null),
+                tileColor: sortedApps[index].app.pinned
-                  onTap: () {
+                    ? Colors.grey.withOpacity(0.1)
+                    : Colors.transparent,
+                selectedTileColor: Theme.of(context)
+                    .colorScheme
+                    .primary
+                    .withOpacity(sortedApps[index].app.pinned ? 0.2 : 0.1),
+                selected: selectedApps.contains(sortedApps[index].app),
+                onLongPress: () {
+                  toggleAppSelected(sortedApps[index].app);
+                },
+                leading: sortedApps[index].installedInfo != null
+                    ? Image.memory(
+                        sortedApps[index].installedInfo!.icon!,
+                        gaplessPlayback: true,
+                      )
+                    : null,
+                title: Text(
+                  sortedApps[index].installedInfo?.name ??
+                      sortedApps[index].app.name,
+                  style: TextStyle(
+                      fontWeight: sortedApps[index].app.pinned
+                          ? FontWeight.bold
+                          : FontWeight.normal),
+                ),
+                subtitle: Text(tr('byX', args: [sortedApps[index].app.author]),
+                    style: TextStyle(
+                        fontWeight: sortedApps[index].app.pinned
+                            ? FontWeight.bold
+                            : FontWeight.normal)),
+                trailing: sortedApps[index].downloadProgress != null
+                    ? Text(tr('percentProgress', args: [
+                        sortedApps[index]
+                                .downloadProgress
+                                ?.toInt()
+                                .toString() ??
+                            '100'
+                      ]))
+                    : (Column(
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        crossAxisAlignment: CrossAxisAlignment.end,
+                        children: [
+                          SingleChildScrollView(
+                              child: SizedBox(
+                                  width: 80,
+                                  child: Text(
+                                    '${sortedApps[index].app.installedVersion ?? tr('notInstalled')}${sortedApps[index].app.trackOnly == true ? ' ${tr('estimateInBrackets')}' : ''}',
+                                    overflow: TextOverflow.fade,
+                                    textAlign: TextAlign.end,
+                                  ))),
+                          sortedApps[index].app.installedVersion != null &&
+                                  sortedApps[index].app.installedVersion !=
+                                      sortedApps[index].app.latestVersion
+                              ? GestureDetector(
+                                  onTap: changesUrl == null
+                                      ? null
+                                      : () {
+                                          launchUrlString(changesUrl,
+                                              mode: LaunchMode
+                                                  .externalApplication);
+                                        },
+                                  child: Text(
+                                    '${tr('updateAvailable')}${sortedApps[index].app.trackOnly ? ' ${tr('estimateInBracketsShort')}' : ''}',
+                                    style: TextStyle(
+                                        fontStyle: FontStyle.italic,
+                                        decoration: changesUrl == null
+                                            ? TextDecoration.none
+                                            : TextDecoration.underline),
+                                  ))
+                              : const SizedBox(),
+                        ],
+                      )),
+                onTap: () {
+                  if (selectedApps.isNotEmpty) {
+                    toggleAppSelected(sortedApps[index].app);
+                  } else {
                     Navigator.push(
                       context,
                       MaterialPageRoute(
                           builder: (context) =>
                               AppPage(appId: sortedApps[index].app.id)),
                     );
-                  },
+                  }
-                );
+                },
-              }, childCount: sortedApps.length))
+              );
-            ])));
+            }, childCount: sortedApps.length))
+          ])),
+      persistentFooterButtons: [
+        Row(
+          children: [
+            IconButton(
+                onPressed: () {
+                  selectedApps.isEmpty
+                      ? selectThese(sortedApps.map((e) => e.app).toList())
+                      : clearSelected();
+                },
+                icon: Icon(
+                  selectedApps.isEmpty
+                      ? Icons.select_all_outlined
+                      : Icons.deselect_outlined,
+                  color: Theme.of(context).colorScheme.primary,
+                ),
+                tooltip: selectedApps.isEmpty
+                    ? tr('selectAll')
+                    : tr('deselectN', args: [selectedApps.length.toString()])),
+            const VerticalDivider(),
+            Expanded(
+                child: Row(
+              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+              children: [
+                selectedApps.isEmpty
+                    ? const SizedBox()
+                    : IconButton(
+                        visualDensity: VisualDensity.compact,
+                        onPressed: () {
+                          showDialog<List<String>?>(
+                              context: context,
+                              builder: (BuildContext ctx) {
+                                return GeneratedFormModal(
+                                  title: tr('removeSelectedAppsQuestion'),
+                                  items: const [],
+                                  defaultValues: const [],
+                                  initValid: true,
+                                  message: tr(
+                                      'xWillBeRemovedButRemainInstalled',
+                                      args: [
+                                        plural('apps', selectedApps.length)
+                                      ]),
+                                );
+                              }).then((values) {
+                            if (values != null) {
+                              appsProvider.removeApps(
+                                  selectedApps.map((e) => e.id).toList());
+                            }
+                          });
+                        },
+                        tooltip: tr('removeSelectedApps'),
+                        icon: const Icon(Icons.delete_outline_outlined),
+                      ),
+                IconButton(
+                    visualDensity: VisualDensity.compact,
+                    onPressed: appsProvider.areDownloadsRunning() ||
+                            (existingUpdateIdsAllOrSelected.isEmpty &&
+                                newInstallIdsAllOrSelected.isEmpty &&
+                                trackOnlyUpdateIdsAllOrSelected.isEmpty)
+                        ? null
+                        : () {
+                            HapticFeedback.heavyImpact();
+                            List<GeneratedFormItem> formInputs = [];
+                            List<String> defaultValues = [];
+                            if (existingUpdateIdsAllOrSelected.isNotEmpty) {
+                              formInputs.add(GeneratedFormItem(
+                                  label: tr('updateX', args: [
+                                    plural('apps',
+                                        existingUpdateIdsAllOrSelected.length)
+                                  ]),
+                                  type: FormItemType.bool,
+                                  key: 'updates'));
+                              defaultValues.add('true');
+                            }
+                            if (newInstallIdsAllOrSelected.isNotEmpty) {
+                              formInputs.add(GeneratedFormItem(
+                                  label: tr('installX', args: [
+                                    plural('apps',
+                                        newInstallIdsAllOrSelected.length)
+                                  ]),
+                                  type: FormItemType.bool,
+                                  key: 'installs'));
+                              defaultValues
+                                  .add(defaultValues.isEmpty ? 'true' : '');
+                            }
+                            if (trackOnlyUpdateIdsAllOrSelected.isNotEmpty) {
+                              formInputs.add(GeneratedFormItem(
+                                  label: tr('markXTrackOnlyAsUpdated', args: [
+                                    plural('apps',
+                                        trackOnlyUpdateIdsAllOrSelected.length)
+                                  ]),
+                                  type: FormItemType.bool,
+                                  key: 'trackonlies'));
+                              defaultValues
+                                  .add(defaultValues.isEmpty ? 'true' : '');
+                            }
+                            showDialog<List<String>?>(
+                                context: context,
+                                builder: (BuildContext ctx) {
+                                  var totalApps = existingUpdateIdsAllOrSelected
+                                          .length +
+                                      newInstallIdsAllOrSelected.length +
+                                      trackOnlyUpdateIdsAllOrSelected.length;
+                                  return GeneratedFormModal(
+                                    title: tr('changeX',
+                                        args: [plural('apps', totalApps)]),
+                                    items: formInputs.map((e) => [e]).toList(),
+                                    defaultValues: defaultValues,
+                                    initValid: true,
+                                  );
+                                }).then((values) {
+                              if (values != null) {
+                                if (values.isEmpty) {
+                                  values = defaultValues;
+                                }
+                                bool shouldInstallUpdates =
+                                    findGeneratedFormValueByKey(
+                                            formInputs, values, 'updates') ==
+                                        'true';
+                                bool shouldInstallNew =
+                                    findGeneratedFormValueByKey(
+                                            formInputs, values, 'installs') ==
+                                        'true';
+                                bool shouldMarkTrackOnlies =
+                                    findGeneratedFormValueByKey(formInputs,
+                                            values, 'trackonlies') ==
+                                        'true';
+                                (() async {
+                                  if (shouldInstallNew ||
+                                      shouldInstallUpdates) {
+                                    await settingsProvider
+                                        .getInstallPermission();
+                                  }
+                                })()
+                                    .then((_) {
+                                  List<String> toInstall = [];
+                                  if (shouldInstallUpdates) {
+                                    toInstall
+                                        .addAll(existingUpdateIdsAllOrSelected);
+                                  }
+                                  if (shouldInstallNew) {
+                                    toInstall
+                                        .addAll(newInstallIdsAllOrSelected);
+                                  }
+                                  if (shouldMarkTrackOnlies) {
+                                    toInstall.addAll(
+                                        trackOnlyUpdateIdsAllOrSelected);
+                                  }
+                                  appsProvider
+                                      .downloadAndInstallLatestApps(
+                                          toInstall, context)
+                                      .catchError((e) {
+                                    showError(e, context);
+                                  });
+                                });
+                              }
+                            });
+                          },
+                    tooltip: selectedApps.isEmpty
+                        ? tr('installUpdateApps')
+                        : tr('installUpdateSelectedApps'),
+                    icon: const Icon(
+                      Icons.file_download_outlined,
+                    )),
+                selectedApps.isEmpty
+                    ? const SizedBox()
+                    : IconButton(
+                        visualDensity: VisualDensity.compact,
+                        onPressed: () {
+                          showDialog(
+                              context: context,
+                              builder: (BuildContext ctx) {
+                                return AlertDialog(
+                                  scrollable: true,
+                                  content: Padding(
+                                    padding: const EdgeInsets.only(top: 6),
+                                    child: Row(
+                                        mainAxisAlignment:
+                                            MainAxisAlignment.spaceAround,
+                                        children: [
+                                          IconButton(
+                                              onPressed:
+                                                  appsProvider
+                                                          .areDownloadsRunning()
+                                                      ? null
+                                                      : () {
+                                                          showDialog(
+                                                              context: context,
+                                                              builder:
+                                                                  (BuildContext
+                                                                      ctx) {
+                                                                return AlertDialog(
+                                                                  title: Text(tr(
+                                                                      'markXSelectedAppsAsUpdated',
+                                                                      args: [
+                                                                        selectedApps
+                                                                            .length
+                                                                            .toString()
+                                                                      ])),
+                                                                  content: Text(
+                                                                      tr('onlyAppliesToInstalledAndOutdatedApps')),
+                                                                  actions: [
+                                                                    TextButton(
+                                                                        onPressed:
+                                                                            () {
+                                                                          Navigator.of(context)
+                                                                              .pop();
+                                                                        },
+                                                                        child: Text(
+                                                                            tr('no'))),
+                                                                    TextButton(
+                                                                        onPressed:
+                                                                            () {
+                                                                          HapticFeedback
+                                                                              .selectionClick();
+                                                                          appsProvider
+                                                                              .saveApps(selectedApps.map((a) {
+                                                                            if (a.installedVersion != null &&
+                                                                                !a.enhancedVersionDetection) {
+                                                                              a.installedVersion = a.latestVersion;
+                                                                            }
+                                                                            return a;
+                                                                          }).toList());
+
+                                                                          Navigator.of(context)
+                                                                              .pop();
+                                                                        },
+                                                                        child: Text(
+                                                                            tr('yes')))
+                                                                  ],
+                                                                );
+                                                              }).whenComplete(() {
+                                                            Navigator.of(
+                                                                    context)
+                                                                .pop();
+                                                          });
+                                                        },
+                                              tooltip:
+                                                  tr('markSelectedAppsUpdated'),
+                                              icon: const Icon(Icons.done)),
+                                          IconButton(
+                                            onPressed: () {
+                                              var pinStatus = selectedApps
+                                                  .where((element) =>
+                                                      element.pinned)
+                                                  .isEmpty;
+                                              appsProvider.saveApps(
+                                                  selectedApps.map((e) {
+                                                e.pinned = pinStatus;
+                                                return e;
+                                              }).toList());
+                                              Navigator.of(context).pop();
+                                            },
+                                            tooltip: selectedApps
+                                                    .where((element) =>
+                                                        element.pinned)
+                                                    .isEmpty
+                                                ? tr('pinToTop')
+                                                : tr('unpinFromTop'),
+                                            icon: Icon(selectedApps
+                                                    .where((element) =>
+                                                        element.pinned)
+                                                    .isEmpty
+                                                ? Icons.bookmark_outline_rounded
+                                                : Icons
+                                                    .bookmark_remove_outlined),
+                                          ),
+                                          IconButton(
+                                            onPressed: () {
+                                              String urls = '';
+                                              for (var a in selectedApps) {
+                                                urls += '${a.url}\n';
+                                              }
+                                              urls = urls.substring(
+                                                  0, urls.length - 1);
+                                              Share.share(urls,
+                                                  subject: tr(
+                                                      'selectedAppURLsFromObtainium'));
+                                              Navigator.of(context).pop();
+                                            },
+                                            tooltip: tr('shareSelectedAppURLs'),
+                                            icon: const Icon(Icons.share),
+                                          ),
+                                          IconButton(
+                                            onPressed: () {
+                                              showDialog(
+                                                  context: context,
+                                                  builder: (BuildContext ctx) {
+                                                    return GeneratedFormModal(
+                                                      title: tr(
+                                                          'resetInstallStatusForSelectedAppsQuestion'),
+                                                      items: const [],
+                                                      defaultValues: const [],
+                                                      initValid: true,
+                                                      message: tr(
+                                                          'installStatusOfXWillBeResetExplanation',
+                                                          args: [
+                                                            plural(
+                                                                'app',
+                                                                selectedApps
+                                                                    .length)
+                                                          ]),
+                                                    );
+                                                  }).then((values) {
+                                                if (values != null) {
+                                                  appsProvider.saveApps(
+                                                      selectedApps.map((e) {
+                                                    e.installedVersion = null;
+                                                    return e;
+                                                  }).toList());
+                                                }
+                                              }).whenComplete(() {
+                                                Navigator.of(context).pop();
+                                              });
+                                            },
+                                            tooltip: tr('resetInstallStatus'),
+                                            icon: const Icon(
+                                                Icons.restore_page_outlined),
+                                          ),
+                                        ]),
+                                  ),
+                                );
+                              });
+                        },
+                        tooltip: tr('more'),
+                        icon: const Icon(Icons.more_horiz),
+                      ),
+              ],
+            )),
+            const VerticalDivider(),
+            IconButton(
+              visualDensity: VisualDensity.compact,
+              onPressed: () {
+                setState(() {
+                  if (currentFilterIsUpdatesOnly) {
+                    filter = null;
+                  } else {
+                    filter = updatesOnlyFilter;
+                  }
+                });
+              },
+              tooltip: currentFilterIsUpdatesOnly
+                  ? tr('removeOutdatedFilter')
+                  : tr('showOutdatedOnly'),
+              icon: Icon(
+                currentFilterIsUpdatesOnly
+                    ? Icons.update_disabled_rounded
+                    : Icons.update_rounded,
+                color: Theme.of(context).colorScheme.primary,
+              ),
+            ),
+            appsProvider.apps.isEmpty
+                ? const SizedBox()
+                : TextButton.icon(
+                    label: Text(
+                      filter == null ? tr('filter') : tr('filterActive'),
+                      style: TextStyle(
+                          fontWeight: filter == null
+                              ? FontWeight.normal
+                              : FontWeight.bold),
+                    ),
+                    onPressed: () {
+                      showDialog<List<String>?>(
+                          context: context,
+                          builder: (BuildContext ctx) {
+                            return GeneratedFormModal(
+                                title: tr('filterApps'),
+                                items: [
+                                  [
+                                    GeneratedFormItem(
+                                        label: tr('appName'), required: false),
+                                    GeneratedFormItem(
+                                        label: tr('author'), required: false)
+                                  ],
+                                  [
+                                    GeneratedFormItem(
+                                        label: tr('upToDateApps'),
+                                        type: FormItemType.bool)
+                                  ],
+                                  [
+                                    GeneratedFormItem(
+                                        label: tr('nonInstalledApps'),
+                                        type: FormItemType.bool)
+                                  ]
+                                ],
+                                defaultValues: filter == null
+                                    ? AppsFilter().toValuesArray()
+                                    : filter!.toValuesArray());
+                          }).then((values) {
+                        if (values != null) {
+                          setState(() {
+                            filter = AppsFilter.fromValuesArray(values);
+                            if (AppsFilter().isIdenticalTo(filter!)) {
+                              filter = null;
+                            }
+                          });
+                        }
+                      });
+                    },
+                    icon: const Icon(Icons.filter_list_rounded))
+          ],
+        ),
+      ],
+    );
   }
 }
+
+class AppsFilter {
+  late String nameFilter;
+  late String authorFilter;
+  late bool includeUptodate;
+  late bool includeNonInstalled;
+
+  AppsFilter(
+      {this.nameFilter = '',
+      this.authorFilter = '',
+      this.includeUptodate = true,
+      this.includeNonInstalled = true});
+
+  List<String> toValuesArray() {
+    return [
+      nameFilter,
+      authorFilter,
+      includeUptodate ? 'true' : '',
+      includeNonInstalled ? 'true' : ''
+    ];
+  }
+
+  AppsFilter.fromValuesArray(List<String> values) {
+    nameFilter = values[0];
+    authorFilter = values[1];
+    includeUptodate = values[2] == 'true';
+    includeNonInstalled = values[3] == 'true';
+  }
+
+  bool isIdenticalTo(AppsFilter other) =>
+      authorFilter.trim() == other.authorFilter.trim() &&
+      nameFilter.trim() == other.nameFilter.trim() &&
+      includeUptodate == other.includeUptodate &&
+      includeNonInstalled == other.includeNonInstalled;
+}

lib/pages/home.dart

@@ -1,4 +1,5 @@
 import 'package:animations/animations.dart';
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:obtainium/pages/add_app.dart';
@@ -25,11 +26,12 @@ class _HomePageState extends State<HomePage> {
   List<int> selectedIndexHistory = [];
 
   List<NavigationPageItem> pages = [
-    NavigationPageItem('Apps', Icons.apps, const AppsPage()),
+    NavigationPageItem(tr('appsString'), Icons.apps,
-    NavigationPageItem('Add App', Icons.add, const AddAppPage()),
+        AppsPage(key: GlobalKey<AppsPageState>())),
+    NavigationPageItem(tr('addApp'), Icons.add, const AddAppPage()),
     NavigationPageItem(
-        'Import/Export', Icons.import_export, const ImportExportPage()),
+        tr('importExport'), Icons.import_export, const ImportExportPage()),
-    NavigationPageItem('Settings', Icons.settings, const SettingsPage())
+    NavigationPageItem(tr('settings'), Icons.settings, const SettingsPage())
   ];
 
   @override
@@ -88,7 +90,9 @@ class _HomePageState extends State<HomePage> {
             });
             return false;
           }
-          return true;
+          return !(pages[0].widget.key as GlobalKey<AppsPageState>)
+              .currentState
+              ?.clearSelected();
         });
   }
 }

lib/pages/import_export.dart

@@ -1,15 +1,18 @@
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:obtainium/components/custom_app_bar.dart';
+import 'package:obtainium/components/generated_form.dart';
 import 'package:obtainium/components/generated_form_modal.dart';
+import 'package:obtainium/custom_errors.dart';
 import 'package:obtainium/providers/apps_provider.dart';
-import 'package:obtainium/providers/settings_provider.dart';
 import 'package:obtainium/providers/source_provider.dart';
 import 'package:provider/provider.dart';
 import 'package:file_picker/file_picker.dart';
+import 'package:url_launcher/url_launcher_string.dart';
 
 class ImportExportPage extends StatefulWidget {
   const ImportExportPage({super.key});
@@ -24,7 +27,6 @@ class _ImportExportPageState extends State<ImportExportPage> {
   @override
   Widget build(BuildContext context) {
     SourceProvider sourceProvider = SourceProvider();
-    var settingsProvider = context.read<SettingsProvider>();
     var appsProvider = context.read<AppsProvider>();
     var outlineButtonStyle = ButtonStyle(
       shape: MaterialStateProperty.all(
@@ -37,29 +39,11 @@ class _ImportExportPageState extends State<ImportExportPage> {
       ),
     );
 
-    Future<List<List<String>>> addApps(List<String> urls) async {
-      await settingsProvider.getInstallPermission();
-      List<dynamic> results = await sourceProvider.getApps(urls);
-      List<App> apps = results[0];
-      Map<String, dynamic> errorsMap = results[1];
-      for (var app in apps) {
-        if (appsProvider.apps.containsKey(app.id)) {
-          errorsMap.addAll({app.id: 'App already added'});
-        } else {
-          await appsProvider.saveApp(app);
-        }
-      }
-      List<List<String>> errors =
-          errorsMap.keys.map((e) => [e, errorsMap[e].toString()]).toList();
-      return errors;
-    }
-
     return Scaffold(
         backgroundColor: Theme.of(context).colorScheme.surface,
         body: CustomScrollView(slivers: <Widget>[
-          const CustomAppBar(title: 'Import/Export'),
+          CustomAppBar(title: tr('importExport')),
           SliverFillRemaining(
-              hasScrollBody: false,
               child: Padding(
                   padding:
                       const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
@@ -79,15 +63,12 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                           appsProvider
                                               .exportApps()
                                               .then((String path) {
-                                            ScaffoldMessenger.of(context)
+                                            showError(
-                                                .showSnackBar(
+                                                tr('exportedTo', args: [path]),
-                                              SnackBar(
+                                                context);
-                                                  content: Text(
-                                                      'Exported to $path')),
-                                            );
                                           });
                                         },
-                                  child: const Text('Obtainium Export'))),
+                                  child: Text(tr('obtainiumExport')))),
                           const SizedBox(
                             width: 16,
                           ),
@@ -111,34 +92,30 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                               try {
                                                 jsonDecode(data);
                                               } catch (e) {
-                                                throw 'Invalid input';
+                                                throw ObtainiumError(
+                                                    tr('invalidInput'));
                                               }
                                               appsProvider
                                                   .importApps(data)
                                                   .then((value) {
-                                                ScaffoldMessenger.of(context)
+                                                showError(
-                                                    .showSnackBar(
+                                                    tr('importedX', args: [
-                                                  SnackBar(
+                                                      plural('apps', value)
-                                                      content: Text(
+                                                    ]),
-                                                          '$value App${value == 1 ? '' : 's'} Imported')),
+                                                    context);
-                                                );
                                               });
                                             } else {
                                               // User canceled the picker
                                             }
                                           }).catchError((e) {
-                                            ScaffoldMessenger.of(context)
+                                            showError(e, context);
-                                                .showSnackBar(
-                                              SnackBar(
-                                                  content: Text(e.toString())),
-                                            );
                                           }).whenComplete(() {
                                             setState(() {
                                               importInProgress = false;
                                             });
                                           });
                                         },
-                                  child: const Text('Obtainium Import')))
+                                  child: Text(tr('obtainiumImport'))))
                         ],
                       ),
                       if (importInProgress)
@@ -165,11 +142,37 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                       context: context,
                                       builder: (BuildContext ctx) {
                                         return GeneratedFormModal(
-                                          title: 'Import from URL List',
+                                          title: tr('importFromURLList'),
                                           items: [
-                                            GeneratedFormItem(
+                                            [
-                                                'App URL List', true, 7)
+                                              GeneratedFormItem(
+                                                  label: tr('appURLList'),
+                                                  max: 7,
+                                                  additionalValidators: [
+                                                    (String? value) {
+                                                      if (value != null &&
+                                                          value.isNotEmpty) {
+                                                        var lines = value
+                                                            .trim()
+                                                            .split('\n');
+                                                        for (int i = 0;
+                                                            i < lines.length;
+                                                            i++) {
+                                                          try {
+                                                            sourceProvider
+                                                                .getSource(
+                                                                    lines[i]);
+                                                          } catch (e) {
+                                                            return '${tr('line')} ${i + 1}: $e';
+                                                          }
+                                                        }
+                                                      }
+                                                      return null;
+                                                    }
+                                                  ])
+                                            ]
                                           ],
+                                          defaultValues: const [],
                                         );
                                       }).then((values) {
                                     if (values != null) {
@@ -178,14 +181,15 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                       setState(() {
                                         importInProgress = true;
                                       });
-                                      addApps(urls).then((errors) {
+                                      appsProvider
+                                          .addAppsByURL(urls)
+                                          .then((errors) {
                                         if (errors.isEmpty) {
-                                          ScaffoldMessenger.of(context)
+                                          showError(
-                                              .showSnackBar(
+                                              tr('importedX', args: [
-                                            SnackBar(
+                                                plural('apps', urls.length)
-                                                content: Text(
+                                              ]),
-                                                    'Imported ${urls.length} Apps')),
+                                              context);
-                                          );
                                         } else {
                                           showDialog(
                                               context: context,
@@ -196,10 +200,7 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                               });
                                         }
                                       }).catchError((e) {
-                                        ScaffoldMessenger.of(context)
+                                        showError(e, context);
-                                            .showSnackBar(
-                                          SnackBar(content: Text(e.toString())),
-                                        );
                                       }).whenComplete(() {
                                         setState(() {
                                           importInProgress = false;
@@ -208,10 +209,11 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                     }
                                   });
                                 },
-                          child: const Text(
+                          child: Text(
-                            'Import from URL List',
+                            tr('importFromURLList'),
                           )),
-                      ...sourceProvider.massSources
+                      ...sourceProvider.sources
+                          .where((element) => element.canSearch)
                           .map((source) => Column(
                                   crossAxisAlignment:
                                       CrossAxisAlignment.stretch,
@@ -221,39 +223,73 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                         onPressed: importInProgress
                                             ? null
                                             : () {
-                                                showDialog(
+                                                () async {
-                                                    context: context,
+                                                  var values = await showDialog<
-                                                    builder:
+                                                          List<String>>(
-                                                        (BuildContext ctx) {
+                                                      context: context,
-                                                      return GeneratedFormModal(
+                                                      builder:
-                                                          title:
+                                                          (BuildContext ctx) {
-                                                              'Import ${source.name}',
+                                                        return GeneratedFormModal(
-                                                          items: source
+                                                          title: tr('searchX',
-                                                              .requiredArgs
+                                                              args: [
-                                                              .map((e) =>
+                                                                source
-                                                                  GeneratedFormItem(
+                                                                    .runtimeType
-                                                                      e,
+                                                                    .toString()
-                                                                      true,
+                                                              ]),
-                                                                      1))
+                                                          items: [
-                                                              .toList());
+                                                            [
-                                                    }).then((values) {
+                                                              GeneratedFormItem(
-                                                  if (values != null) {
+                                                                  label: tr(
-                                                    source
+                                                                      'searchQuery'))
-                                                        .getUrls(values)
+                                                            ]
-                                                        .then((urls) {
+                                                          ],
-                                                      setState(() {
+                                                          defaultValues: const [],
-                                                        importInProgress = true;
+                                                        );
                                                       });
-                                                      addApps(urls)
+                                                  if (values != null &&
-                                                          .then((errors) {
+                                                      values[0].isNotEmpty) {
+                                                    setState(() {
+                                                      importInProgress = true;
+                                                    });
+                                                    var urlsWithDescriptions =
+                                                        await source
+                                                            .search(values[0]);
+                                                    if (urlsWithDescriptions
+                                                        .isNotEmpty) {
+                                                      var selectedUrls =
+                                                          await showDialog<
+                                                                  List<
+                                                                      String>?>(
+                                                              context: context,
+                                                              builder:
+                                                                  (BuildContext
+                                                                      ctx) {
+                                                                return UrlSelectionModal(
+                                                                  urlsWithDescriptions:
+                                                                      urlsWithDescriptions,
+                                                                  selectedByDefault:
+                                                                      false,
+                                                                );
+                                                              });
+                                                      if (selectedUrls !=
+                                                              null &&
+                                                          selectedUrls
+                                                              .isNotEmpty) {
+                                                        var errors =
+                                                            await appsProvider
+                                                                .addAppsByURL(
+                                                                    selectedUrls);
                                                         if (errors.isEmpty) {
-                                                          ScaffoldMessenger.of(
+                                                          // ignore: use_build_context_synchronously
-                                                                  context)
+                                                          showError(
-                                                              .showSnackBar(
+                                                              tr('importedX',
-                                                            SnackBar(
+                                                                  args: [
-                                                                content: Text(
+                                                                    plural(
-                                                                    'Imported ${urls.length} Apps')),
+                                                                        'app',
-                                                          );
+                                                                        selectedUrls
+                                                                            .length)
+                                                                  ]),
+                                                              context);
                                                         } else {
                                                           showDialog(
                                                               context: context,
@@ -261,33 +297,139 @@ class _ImportExportPageState extends State<ImportExportPage> {
                                                                   (BuildContext
                                                                       ctx) {
                                                                 return ImportErrorDialog(
-                                                                    urlsLength: urls
+                                                                    urlsLength:
-                                                                        .length,
+                                                                        selectedUrls
+                                                                            .length,
                                                                     errors:
                                                                         errors);
                                                               });
                                                         }
-                                                      }).whenComplete(() {
+                                                      }
-                                                        setState(() {
+                                                    } else {
-                                                          importInProgress =
+                                                      throw ObtainiumError(
-                                                              false;
+                                                          tr('noResults'));
-                                                        });
+                                                    }
-                                                      });
-                                                    }).catchError((e) {
-                                                      ScaffoldMessenger.of(
-                                                              context)
-                                                          .showSnackBar(
-                                                        SnackBar(
-                                                            content: Text(
-                                                                e.toString())),
-                                                      );
-                                                    });
                                                   }
+                                                }()
+                                                    .catchError((e) {
+                                                  showError(e, context);
+                                                }).whenComplete(() {
+                                                  setState(() {
+                                                    importInProgress = false;
+                                                  });
                                                 });
                                               },
-                                        child: Text('Import ${source.name}'))
+                                        child: Text(tr('searchX', args: [
+                                          source.runtimeType.toString()
+                                        ])))
                                   ]))
-                          .toList()
+                          .toList(),
+                      ...sourceProvider.massUrlSources
+                          .map((source) => Column(
+                                  crossAxisAlignment:
+                                      CrossAxisAlignment.stretch,
+                                  children: [
+                                    const SizedBox(height: 8),
+                                    TextButton(
+                                        onPressed: importInProgress
+                                            ? null
+                                            : () {
+                                                () async {
+                                                  var values = await showDialog(
+                                                      context: context,
+                                                      builder:
+                                                          (BuildContext ctx) {
+                                                        return GeneratedFormModal(
+                                                          title: tr('importX',
+                                                              args: [
+                                                                source.name
+                                                              ]),
+                                                          items:
+                                                              source
+                                                                  .requiredArgs
+                                                                  .map(
+                                                                      (e) => [
+                                                                            GeneratedFormItem(label: e)
+                                                                          ])
+                                                                  .toList(),
+                                                          defaultValues: const [],
+                                                        );
+                                                      });
+                                                  if (values != null) {
+                                                    setState(() {
+                                                      importInProgress = true;
+                                                    });
+                                                    var urlsWithDescriptions =
+                                                        await source
+                                                            .getUrlsWithDescriptions(
+                                                                values);
+                                                    var selectedUrls =
+                                                        await showDialog<
+                                                                List<String>?>(
+                                                            context: context,
+                                                            builder:
+                                                                (BuildContext
+                                                                    ctx) {
+                                                              return UrlSelectionModal(
+                                                                  urlsWithDescriptions:
+                                                                      urlsWithDescriptions);
+                                                            });
+                                                    if (selectedUrls != null) {
+                                                      var errors =
+                                                          await appsProvider
+                                                              .addAppsByURL(
+                                                                  selectedUrls);
+                                                      if (errors.isEmpty) {
+                                                        // ignore: use_build_context_synchronously
+                                                        showError(
+                                                            tr('importedX',
+                                                                args: [
+                                                                  plural(
+                                                                      'app',
+                                                                      selectedUrls
+                                                                          .length)
+                                                                ]),
+                                                            context);
+                                                      } else {
+                                                        showDialog(
+                                                            context: context,
+                                                            builder:
+                                                                (BuildContext
+                                                                    ctx) {
+                                                              return ImportErrorDialog(
+                                                                  urlsLength:
+                                                                      selectedUrls
+                                                                          .length,
+                                                                  errors:
+                                                                      errors);
+                                                            });
+                                                      }
+                                                    }
+                                                  }
+                                                }()
+                                                    .catchError((e) {
+                                                  showError(e, context);
+                                                }).whenComplete(() {
+                                                  setState(() {
+                                                    importInProgress = false;
+                                                  });
+                                                });
+                                              },
+                                        child: Text(
+                                            tr('importX', args: [source.name])))
+                                  ]))
+                          .toList(),
+                      const Spacer(),
+                      const Divider(
+                        height: 32,
+                      ),
+                      Text(tr('importedAppsIdDisclaimer'),
+                          textAlign: TextAlign.center,
+                          style: const TextStyle(
+                              fontStyle: FontStyle.italic, fontSize: 12)),
+                      const SizedBox(
+                        height: 8,
+                      )
                     ],
                   )))
         ]));
@@ -310,16 +452,19 @@ class _ImportErrorDialogState extends State<ImportErrorDialog> {
   Widget build(BuildContext context) {
     return AlertDialog(
       scrollable: true,
-      title: const Text('Import Errors'),
+      title: Text(tr('importErrors')),
       content:
           Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: [
         Text(
-          '${widget.urlsLength - widget.errors.length} of ${widget.urlsLength} Apps imported.',
+          tr('importedXOfYApps', args: [
+            (widget.urlsLength - widget.errors.length).toString(),
+            widget.urlsLength.toString()
+          ]),
           style: Theme.of(context).textTheme.bodyLarge,
         ),
         const SizedBox(height: 16),
         Text(
-          'The following URLs had errors:',
+          tr('followingURLsHadErrors'),
           style: Theme.of(context).textTheme.bodyLarge,
         ),
         ...widget.errors.map((e) {
@@ -342,7 +487,132 @@ class _ImportErrorDialogState extends State<ImportErrorDialog> {
             onPressed: () {
               Navigator.of(context).pop(null);
             },
-            child: const Text('Okay'))
+            child: Text(tr('okay')))
+      ],
+    );
+  }
+}
+
+// ignore: must_be_immutable
+class UrlSelectionModal extends StatefulWidget {
+  UrlSelectionModal(
+      {super.key,
+      required this.urlsWithDescriptions,
+      this.selectedByDefault = true,
+      this.onlyOneSelectionAllowed = false});
+
+  Map<String, String> urlsWithDescriptions;
+  bool selectedByDefault;
+  bool onlyOneSelectionAllowed;
+
+  @override
+  State<UrlSelectionModal> createState() => _UrlSelectionModalState();
+}
+
+class _UrlSelectionModalState extends State<UrlSelectionModal> {
+  Map<MapEntry<String, String>, bool> urlWithDescriptionSelections = {};
+  @override
+  void initState() {
+    super.initState();
+    for (var url in widget.urlsWithDescriptions.entries) {
+      urlWithDescriptionSelections.putIfAbsent(url,
+          () => widget.selectedByDefault && !widget.onlyOneSelectionAllowed);
+    }
+    if (widget.selectedByDefault && widget.onlyOneSelectionAllowed) {
+      selectOnlyOne(widget.urlsWithDescriptions.entries.first.key);
+    }
+  }
+
+  selectOnlyOne(String url) {
+    for (var uwd in urlWithDescriptionSelections.keys) {
+      urlWithDescriptionSelections[uwd] = uwd.key == url;
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      scrollable: true,
+      title: Text(
+          widget.onlyOneSelectionAllowed ? tr('selectURL') : tr('selectURLs')),
+      content: Column(children: [
+        ...urlWithDescriptionSelections.keys.map((urlWithD) {
+          return Row(children: [
+            Checkbox(
+                value: urlWithDescriptionSelections[urlWithD],
+                onChanged: (value) {
+                  setState(() {
+                    value ??= false;
+                    if (value! && widget.onlyOneSelectionAllowed) {
+                      selectOnlyOne(urlWithD.key);
+                    } else {
+                      urlWithDescriptionSelections[urlWithD] = value!;
+                    }
+                  });
+                }),
+            const SizedBox(
+              width: 8,
+            ),
+            Expanded(
+                child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                const SizedBox(
+                  height: 8,
+                ),
+                GestureDetector(
+                    onTap: () {
+                      launchUrlString(urlWithD.key,
+                          mode: LaunchMode.externalApplication);
+                    },
+                    child: Text(
+                      Uri.parse(urlWithD.key).path.substring(1),
+                      style:
+                          const TextStyle(decoration: TextDecoration.underline),
+                      textAlign: TextAlign.start,
+                    )),
+                Text(
+                  urlWithD.value.length > 128
+                      ? '${urlWithD.value.substring(0, 128)}...'
+                      : urlWithD.value,
+                  style: const TextStyle(
+                      fontStyle: FontStyle.italic, fontSize: 12),
+                ),
+                const SizedBox(
+                  height: 8,
+                )
+              ],
+            ))
+          ]);
+        })
+      ]),
+      actions: [
+        TextButton(
+            onPressed: () {
+              Navigator.of(context).pop();
+            },
+            child: Text(tr('cancel'))),
+        TextButton(
+            onPressed:
+                urlWithDescriptionSelections.values.where((b) => b).isEmpty
+                    ? null
+                    : () {
+                        Navigator.of(context).pop(urlWithDescriptionSelections
+                            .entries
+                            .where((entry) => entry.value)
+                            .map((e) => e.key.key)
+                            .toList());
+                      },
+            child: Text(widget.onlyOneSelectionAllowed
+                ? tr('pick')
+                : tr('importX', args: [
+                    plural(
+                        'url',
+                        urlWithDescriptionSelections.values
+                            .where((b) => b)
+                            .length)
+                  ])))
       ],
     );
   }

lib/pages/settings.dart

@@ -1,7 +1,13 @@
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:obtainium/components/custom_app_bar.dart';
+import 'package:obtainium/components/generated_form.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/logs_provider.dart';
 import 'package:obtainium/providers/settings_provider.dart';
+import 'package:obtainium/providers/source_provider.dart';
 import 'package:provider/provider.dart';
+import 'package:share_plus/share_plus.dart';
 import 'package:url_launcher/url_launcher_string.dart';
 
 class SettingsPage extends StatefulWidget {
@@ -15,137 +21,184 @@ class _SettingsPageState extends State<SettingsPage> {
   @override
   Widget build(BuildContext context) {
     SettingsProvider settingsProvider = context.watch<SettingsProvider>();
+    SourceProvider sourceProvider = SourceProvider();
     if (settingsProvider.prefs == null) {
       settingsProvider.initializeSettings();
     }
+
+    var themeDropdown = DropdownButtonFormField(
+        decoration: InputDecoration(labelText: tr('theme')),
+        value: settingsProvider.theme,
+        items: [
+          DropdownMenuItem(
+            value: ThemeSettings.dark,
+            child: Text(tr('dark')),
+          ),
+          DropdownMenuItem(
+            value: ThemeSettings.light,
+            child: Text(tr('light')),
+          ),
+          DropdownMenuItem(
+            value: ThemeSettings.system,
+            child: Text(tr('followSystem')),
+          )
+        ],
+        onChanged: (value) {
+          if (value != null) {
+            settingsProvider.theme = value;
+          }
+        });
+
+    var colourDropdown = DropdownButtonFormField(
+        decoration: InputDecoration(labelText: tr('colour')),
+        value: settingsProvider.colour,
+        items: [
+          DropdownMenuItem(
+            value: ColourSettings.basic,
+            child: Text(tr('obtainium')),
+          ),
+          DropdownMenuItem(
+            value: ColourSettings.materialYou,
+            child: Text(tr('materialYou')),
+          )
+        ],
+        onChanged: (value) {
+          if (value != null) {
+            settingsProvider.colour = value;
+          }
+        });
+
+    var sortDropdown = DropdownButtonFormField(
+        decoration: InputDecoration(labelText: tr('appSortBy')),
+        value: settingsProvider.sortColumn,
+        items: [
+          DropdownMenuItem(
+            value: SortColumnSettings.authorName,
+            child: Text(tr('authorName')),
+          ),
+          DropdownMenuItem(
+            value: SortColumnSettings.nameAuthor,
+            child: Text(tr('nameAuthor')),
+          ),
+          DropdownMenuItem(
+            value: SortColumnSettings.added,
+            child: Text(tr('asAdded')),
+          )
+        ],
+        onChanged: (value) {
+          if (value != null) {
+            settingsProvider.sortColumn = value;
+          }
+        });
+
+    var orderDropdown = DropdownButtonFormField(
+        decoration: InputDecoration(labelText: tr('appSortOrder')),
+        value: settingsProvider.sortOrder,
+        items: [
+          DropdownMenuItem(
+            value: SortOrderSettings.ascending,
+            child: Text(tr('ascending')),
+          ),
+          DropdownMenuItem(
+            value: SortOrderSettings.descending,
+            child: Text(tr('descending')),
+          ),
+        ],
+        onChanged: (value) {
+          if (value != null) {
+            settingsProvider.sortOrder = value;
+          }
+        });
+
+    var intervalDropdown = DropdownButtonFormField(
+        decoration: InputDecoration(labelText: tr('bgUpdateCheckInterval')),
+        value: settingsProvider.updateInterval,
+        items: updateIntervals.map((e) {
+          int displayNum = (e < 60
+                  ? e
+                  : e < 1440
+                      ? e / 60
+                      : e / 1440)
+              .round();
+          String display = e == 0
+              ? tr('neverManualOnly')
+              : (e < 60
+                  ? plural('minute', displayNum)
+                  : e < 1440
+                      ? plural('hour', displayNum)
+                      : plural('day', displayNum));
+          return DropdownMenuItem(value: e, child: Text(display));
+        }).toList(),
+        onChanged: (value) {
+          if (value != null) {
+            settingsProvider.updateInterval = value;
+          }
+        });
+
+    var sourceSpecificFields = sourceProvider.sources.map((e) {
+      if (e.additionalSourceSpecificSettingFormItems.isNotEmpty) {
+        return GeneratedForm(
+            items: e.additionalSourceSpecificSettingFormItems
+                .map((e) => [e])
+                .toList(),
+            onValueChanges: (values, valid, isBuilding) {
+              if (valid) {
+                for (var i = 0; i < values.length; i++) {
+                  settingsProvider.setSettingString(
+                      e.additionalSourceSpecificSettingFormItems[i].id,
+                      values[i]);
+                }
+              }
+            },
+            defaultValues: e.additionalSourceSpecificSettingFormItems.map((e) {
+              return settingsProvider.getSettingString(e.id) ?? '';
+            }).toList());
+      } else {
+        return Container();
+      }
+    });
+
+    const height16 = SizedBox(
+      height: 16,
+    );
+
     return Scaffold(
         backgroundColor: Theme.of(context).colorScheme.surface,
         body: CustomScrollView(slivers: <Widget>[
-          const CustomAppBar(title: 'Add App'),
+          CustomAppBar(title: tr('settings')),
-          SliverFillRemaining(
+          SliverToBoxAdapter(
-              hasScrollBody: true,
               child: Padding(
                   padding: const EdgeInsets.all(16),
                   child: settingsProvider.prefs == null
-                      ? Container()
+                      ? const SizedBox()
                       : Column(
                           crossAxisAlignment: CrossAxisAlignment.start,
                           children: [
                             Text(
-                              'Appearance',
+                              tr('appearance'),
                               style: TextStyle(
                                   color: Theme.of(context).colorScheme.primary),
                             ),
-                            DropdownButtonFormField(
+                            themeDropdown,
-                                decoration:
+                            height16,
-                                    const InputDecoration(labelText: 'Theme'),
+                            colourDropdown,
-                                value: settingsProvider.theme,
+                            height16,
-                                items: const [
-                                  DropdownMenuItem(
-                                    value: ThemeSettings.dark,
-                                    child: Text('Dark'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: ThemeSettings.light,
-                                    child: Text('Light'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: ThemeSettings.system,
-                                    child: Text('Follow System'),
-                                  )
-                                ],
-                                onChanged: (value) {
-                                  if (value != null) {
-                                    settingsProvider.theme = value;
-                                  }
-                                }),
-                            const SizedBox(
-                              height: 16,
-                            ),
-                            DropdownButtonFormField(
-                                decoration:
-                                    const InputDecoration(labelText: 'Colour'),
-                                value: settingsProvider.colour,
-                                items: const [
-                                  DropdownMenuItem(
-                                    value: ColourSettings.basic,
-                                    child: Text('Obtainium'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: ColourSettings.materialYou,
-                                    child: Text('Material You'),
-                                  )
-                                ],
-                                onChanged: (value) {
-                                  if (value != null) {
-                                    settingsProvider.colour = value;
-                                  }
-                                }),
-                            const SizedBox(
-                              height: 16,
-                            ),
                             Row(
                               mainAxisAlignment: MainAxisAlignment.start,
                               crossAxisAlignment: CrossAxisAlignment.start,
                               children: [
-                                Expanded(
+                                Expanded(child: sortDropdown),
-                                    child: DropdownButtonFormField(
-                                        decoration: const InputDecoration(
-                                            labelText: 'App Sort By'),
-                                        value: settingsProvider.sortColumn,
-                                        items: const [
-                                          DropdownMenuItem(
-                                            value:
-                                                SortColumnSettings.authorName,
-                                            child: Text('Author/Name'),
-                                          ),
-                                          DropdownMenuItem(
-                                            value:
-                                                SortColumnSettings.nameAuthor,
-                                            child: Text('Name/Author'),
-                                          ),
-                                          DropdownMenuItem(
-                                            value: SortColumnSettings.added,
-                                            child: Text('As Added'),
-                                          )
-                                        ],
-                                        onChanged: (value) {
-                                          if (value != null) {
-                                            settingsProvider.sortColumn = value;
-                                          }
-                                        })),
                                 const SizedBox(
                                   width: 16,
                                 ),
-                                Expanded(
+                                Expanded(child: orderDropdown),
-                                    child: DropdownButtonFormField(
-                                        decoration: const InputDecoration(
-                                            labelText: 'App Sort Order'),
-                                        value: settingsProvider.sortOrder,
-                                        items: const [
-                                          DropdownMenuItem(
-                                            value: SortOrderSettings.ascending,
-                                            child: Text('Ascending'),
-                                          ),
-                                          DropdownMenuItem(
-                                            value: SortOrderSettings.descending,
-                                            child: Text('Descending'),
-                                          ),
-                                        ],
-                                        onChanged: (value) {
-                                          if (value != null) {
-                                            settingsProvider.sortOrder = value;
-                                          }
-                                        })),
                               ],
                             ),
-                            const SizedBox(
+                            height16,
-                              height: 16,
-                            ),
                             Row(
                               mainAxisAlignment: MainAxisAlignment.spaceBetween,
                               children: [
-                                const Text('Show Source Webpage in App View'),
+                                Text(tr('showWebInAppView')),
                                 Switch(
                                     value: settingsProvider.showAppWebpage,
                                     onChanged: (value) {
@@ -153,84 +206,148 @@ class _SettingsPageState extends State<SettingsPage> {
                                     })
                               ],
                             ),
+                            height16,
+                            Row(
+                              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                              children: [
+                                Text(tr('pinUpdates')),
+                                Switch(
+                                    value: settingsProvider.pinUpdates,
+                                    onChanged: (value) {
+                                      settingsProvider.pinUpdates = value;
+                                    })
+                              ],
+                            ),
                             const Divider(
                               height: 16,
                             ),
-                            const SizedBox(
+                            height16,
-                              height: 16,
-                            ),
                             Text(
-                              'More',
+                              tr('updates'),
                               style: TextStyle(
                                   color: Theme.of(context).colorScheme.primary),
                             ),
-                            DropdownButtonFormField(
+                            intervalDropdown,
-                                decoration: const InputDecoration(
+                            const Divider(
-                                    labelText:
+                              height: 48,
-                                        'Background Update Checking Interval'),
-                                value: settingsProvider.updateInterval,
-                                items: const [
-                                  DropdownMenuItem(
-                                    value: 15,
-                                    child: Text('15 Minutes'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: 30,
-                                    child: Text('30 Minutes'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: 60,
-                                    child: Text('1 Hour'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: 360,
-                                    child: Text('6 Hours'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: 720,
-                                    child: Text('12 Hours'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: 1440,
-                                    child: Text('1 Day'),
-                                  ),
-                                  DropdownMenuItem(
-                                    value: 0,
-                                    child: Text('Never - Manual Only'),
-                                  ),
-                                ],
-                                onChanged: (value) {
-                                  if (value != null) {
-                                    settingsProvider.updateInterval = value;
-                                  }
-                                }),
-                            const Spacer(),
-                            Row(
-                              mainAxisAlignment: MainAxisAlignment.center,
-                              children: [
-                                TextButton.icon(
-                                  style: ButtonStyle(
-                                    foregroundColor:
-                                        MaterialStateProperty.resolveWith<
-                                            Color>((Set<MaterialState> states) {
-                                      return Colors.grey;
-                                    }),
-                                  ),
-                                  onPressed: () {
-                                    launchUrlString(settingsProvider.sourceUrl,
-                                        mode: LaunchMode.externalApplication);
-                                  },
-                                  icon: const Icon(Icons.code),
-                                  label: Text(
-                                    'Source',
-                                    style:
-                                        Theme.of(context).textTheme.bodySmall,
-                                  ),
-                                )
-                              ],
                             ),
+                            Text(
+                              tr('sourceSpecific'),
+                              style: TextStyle(
+                                  color: Theme.of(context).colorScheme.primary),
+                            ),
+                            ...sourceSpecificFields,
                           ],
-                        )))
+                        ))),
+          SliverToBoxAdapter(
+            child: Column(
+              children: [
+                const Divider(
+                  height: 32,
+                ),
+                Row(
+                  mainAxisAlignment: MainAxisAlignment.spaceAround,
+                  children: [
+                    TextButton.icon(
+                      onPressed: () {
+                        launchUrlString(settingsProvider.sourceUrl,
+                            mode: LaunchMode.externalApplication);
+                      },
+                      icon: const Icon(Icons.code),
+                      label: Text(
+                        tr('appSource'),
+                      ),
+                    ),
+                    TextButton.icon(
+                        onPressed: () {
+                          context.read<LogsProvider>().get().then((logs) {
+                            if (logs.isEmpty) {
+                              showError(ObtainiumError(tr('noLogs')), context);
+                            } else {
+                              showDialog(
+                                  context: context,
+                                  builder: (BuildContext ctx) {
+                                    return const LogsDialog();
+                                  });
+                            }
+                          });
+                        },
+                        icon: const Icon(Icons.bug_report_outlined),
+                        label: Text(tr('appLogs'))),
+                  ],
+                ),
+                height16,
+              ],
+            ),
+          )
         ]));
   }
 }
+
+class LogsDialog extends StatefulWidget {
+  const LogsDialog({super.key});
+
+  @override
+  State<LogsDialog> createState() => _LogsDialogState();
+}
+
+class _LogsDialogState extends State<LogsDialog> {
+  String? logString;
+  List<int> days = [7, 5, 4, 3, 2, 1];
+
+  @override
+  Widget build(BuildContext context) {
+    var logsProvider = context.read<LogsProvider>();
+    void filterLogs(int days) {
+      logsProvider
+          .get(after: DateTime.now().subtract(Duration(days: days)))
+          .then((value) {
+        setState(() {
+          String l = value.map((e) => e.toString()).join('\n\n');
+          logString = l.isNotEmpty ? l : tr('noLogs');
+        });
+      });
+    }
+
+    if (logString == null) {
+      filterLogs(days.first);
+    }
+
+    return AlertDialog(
+      scrollable: true,
+      title: Text(tr('appLogs')),
+      content: Column(
+        children: [
+          DropdownButtonFormField(
+              value: days.first,
+              items: days
+                  .map((e) => DropdownMenuItem(
+                        value: e,
+                        child: Text(plural('day', e)),
+                      ))
+                  .toList(),
+              onChanged: (d) {
+                filterLogs(d ?? 7);
+              }),
+          const SizedBox(
+            height: 32,
+          ),
+          Text(logString ?? '')
+        ],
+      ),
+      actions: [
+        TextButton(
+            onPressed: () {
+              Navigator.of(context).pop();
+            },
+            child: Text(tr('close'))),
+        TextButton(
+            onPressed: () {
+              Share.share(logString ?? '', subject: tr('appLogs'));
+              Navigator.of(context).pop();
+            },
+            child: Text(tr('share')))
+      ],
+    );
+  }
+}

lib/providers/apps_provider.dart

@@ -5,27 +5,36 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:device_info_plus/device_info_plus.dart';
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:install_plugin_v2/install_plugin_v2.dart';
+import 'package:installed_apps/app_info.dart';
+import 'package:installed_apps/installed_apps.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/providers/logs_provider.dart';
 import 'package:obtainium/providers/notifications_provider.dart';
+import 'package:obtainium/providers/settings_provider.dart';
+import 'package:package_archive_info/package_archive_info.dart';
 import 'package:provider/provider.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:flutter_fgbg/flutter_fgbg.dart';
 import 'package:obtainium/providers/source_provider.dart';
 import 'package:http/http.dart';
-import 'package:install_plugin_v2/install_plugin_v2.dart';
 
 class AppInMemory {
   late App app;
   double? downloadProgress;
+  AppInfo? installedInfo;
 
-  AppInMemory(this.app, this.downloadProgress);
+  AppInMemory(this.app, this.downloadProgress, this.installedInfo);
 }
 
-class ApkFile {
+class DownloadedApk {
   String appId;
   File file;
-  ApkFile(this.appId, this.file);
+  DownloadedApk(this.appId, this.file);
 }
 
 class AppsProvider with ChangeNotifier {
@@ -33,136 +42,341 @@ class AppsProvider with ChangeNotifier {
   Map<String, AppInMemory> apps = {};
   bool loadingApps = false;
   bool gettingUpdates = false;
+  bool forBGTask = false;
+  LogsProvider logs = LogsProvider();
 
   // Variables to keep track of the app foreground status (installs can't run in the background)
   bool isForeground = true;
-  late Stream<FGBGType> foregroundStream;
+  late Stream<FGBGType>? foregroundStream;
-  late StreamSubscription<FGBGType> foregroundSubscription;
+  late StreamSubscription<FGBGType>? foregroundSubscription;
 
-  AppsProvider(
+  AppsProvider({this.forBGTask = false}) {
-      {bool shouldLoadApps = false,
+    // Many setup tasks should only be done in the foreground isolate
-      bool shouldCheckUpdatesAfterLoad = false,
+    if (!forBGTask) {
-      bool shouldDeleteAPKs = false}) {
+      // Subscribe to changes in the app foreground status
-    // Subscribe to changes in the app foreground status
+      foregroundStream = FGBGEvents.stream.asBroadcastStream();
-    foregroundStream = FGBGEvents.stream.asBroadcastStream();
+      foregroundSubscription = foregroundStream?.listen((event) async {
-    foregroundSubscription = foregroundStream.listen((event) async {
+        isForeground = event == FGBGType.foreground;
-      isForeground = event == FGBGType.foreground;
+        if (isForeground) await loadApps();
-      if (isForeground) await loadApps();
-    });
-    if (shouldDeleteAPKs) {
-      deleteSavedAPKs();
-    }
-    if (shouldLoadApps) {
-      loadApps().then((_) {
-        if (shouldCheckUpdatesAfterLoad) {
-          checkUpdates();
-        }
       });
+      () async {
+        // Load Apps into memory (in background, this is done later instead of in the constructor)
+        await loadApps();
+        // Delete existing APKs
+        (await getExternalStorageDirectory())
+            ?.listSync()
+            .where((element) =>
+                element.path.endsWith('.apk') ||
+                element.path.endsWith('.apk.part'))
+            .forEach((apk) {
+          apk.delete();
+        });
+      }();
     }
   }
 
-  Future<ApkFile> downloadApp(String apkUrl, String appId) async {
+  downloadFile(String url, String fileName, Function? onProgress,
+      {bool useExisting = true}) async {
+    var destDir = (await getExternalStorageDirectory())!.path;
     StreamedResponse response =
-        await Client().send(Request('GET', Uri.parse(apkUrl)));
+        await Client().send(Request('GET', Uri.parse(url)));
-    File downloadFile =
+    File downloadedFile = File('$destDir/$fileName');
-        File('${(await getExternalStorageDirectory())!.path}/$appId.apk');
+    if (!(downloadedFile.existsSync() && useExisting)) {
-    if (downloadFile.existsSync()) {
+      File tempDownloadedFile = File('${downloadedFile.path}.part');
-      downloadFile.deleteSync();
+      if (tempDownloadedFile.existsSync()) {
+        tempDownloadedFile.deleteSync();
+      }
+      var length = response.contentLength;
+      var received = 0;
+      double? progress;
+      var sink = tempDownloadedFile.openWrite();
+      await response.stream.map((s) {
+        received += s.length;
+        progress = (length != null ? received / length * 100 : 30);
+        if (onProgress != null) {
+          onProgress(progress);
+        }
+        return s;
+      }).pipe(sink);
+      await sink.close();
+      progress = null;
+      if (onProgress != null) {
+        onProgress(progress);
+      }
+      if (response.statusCode != 200) {
+        tempDownloadedFile.deleteSync();
+        throw response.reasonPhrase ?? tr('unexpectedError');
+      }
+      tempDownloadedFile.renameSync(downloadedFile.path);
     }
-    var length = response.contentLength;
+    return downloadedFile;
-    var received = 0;
+  }
-    var sink = downloadFile.openWrite();
 
-    await response.stream.map((s) {
+  Future<DownloadedApk> downloadApp(App app, BuildContext? context) async {
-      received += s.length;
+    var fileName =
-      apps[appId]!.downloadProgress =
+        '${app.id}-${app.latestVersion}-${app.preferredApkIndex}.apk';
-          (length != null ? received / length * 100 : 30);
+    String downloadUrl = await SourceProvider()
-      notifyListeners();
+        .getSource(app.url)
-      return s;
+        .apkUrlPrefetchModifier(app.apkUrls[app.preferredApkIndex]);
-    }).pipe(sink);
+    NotificationsProvider? notificationsProvider =
-
+        context?.read<NotificationsProvider>();
-    await sink.close();
+    var notif = DownloadNotification(app.name, 100);
-    apps[appId]!.downloadProgress = null;
+    notificationsProvider?.cancel(notif.id);
-    notifyListeners();
+    int? prevProg;
-
+    File downloadedFile =
-    if (response.statusCode != 200) {
+        await downloadFile(downloadUrl, fileName, (double? progress) {
-      downloadFile.deleteSync();
+      int? prog = progress?.ceil();
-      throw response.reasonPhrase ?? 'Unknown Error';
+      if (apps[app.id] != null) {
+        apps[app.id]!.downloadProgress = progress;
+        notifyListeners();
+      }
+      notif = DownloadNotification(app.name, prog ?? 100);
+      if (prog != null && prevProg != prog) {
+        notificationsProvider?.notify(notif);
+      }
+      prevProg = prog;
+    });
+    notificationsProvider?.cancel(notif.id);
+    // Delete older versions of the APK if any
+    for (var file in downloadedFile.parent.listSync()) {
+      var fn = file.path.split('/').last;
+      if (fn.startsWith('${app.id}-') &&
+          fn.endsWith('.apk') &&
+          fn != fileName) {
+        file.delete();
+      }
     }
-    return ApkFile(appId, downloadFile);
+    // If the APK package ID is different from the App ID, it is either new (using a placeholder ID) or the ID has changed
+    // The former case should be handled (give the App its real ID), the latter is a security issue
+    var newInfo = await PackageArchiveInfo.fromPath(downloadedFile.path);
+    if (app.id != newInfo.packageName) {
+      if (apps[app.id] != null && !SourceProvider().isTempId(app.id)) {
+        throw IDChangedError();
+      }
+      var originalAppId = app.id;
+      app.id = newInfo.packageName;
+      downloadedFile = downloadedFile.renameSync(
+          '${downloadedFile.parent.path}/${app.id}-${app.latestVersion}-${app.preferredApkIndex}.apk');
+      if (apps[originalAppId] != null) {
+        await removeApps([originalAppId]);
+        await saveApps([app]);
+      }
+    }
+    return DownloadedApk(app.id, downloadedFile);
   }
 
   bool areDownloadsRunning() => apps.values
       .where((element) => element.downloadProgress != null)
       .isNotEmpty;
 
-  // Given an AppId, uses stored info about the app to download an APK (with user input if needed) and install it
+  Future<bool> canInstallSilently(App app) async {
-  // Installs can only be done in the foreground, so a notification is sent to get the user's attention if needed
+    return false;
-  // Returns upon successful download, regardless of installation result
+    // TODO: Uncomment the below once silentupdates are ever figured out
-  Future<bool> downloadAndInstallLatestApp(
+    // // TODO: This is unreliable - try to get from OS in the future
-      List<String> appIds, BuildContext context) async {
+    // if (app.apkUrls.length > 1) {
+    //    return false;
+    // }
+    // var osInfo = await DeviceInfoPlugin().androidInfo;
+    // return app.installedVersion != null &&
+    //     osInfo.version.sdkInt >= 30 &&
+    //     osInfo.version.release.compareTo('12') >= 0;
+  }
+
+  Future<void> waitForUserToReturnToForeground(BuildContext context) async {
     NotificationsProvider notificationsProvider =
         context.read<NotificationsProvider>();
-    Map<String, String> appsToInstall = {};
+    if (!isForeground) {
+      await notificationsProvider.notify(completeInstallationNotification,
+          cancelExisting: true);
+      while (await FGBGEvents.stream.first != FGBGType.foreground) {}
+      await notificationsProvider.cancel(completeInstallationNotification.id);
+    }
+  }
+
+  Future<bool> canDowngradeApps() async {
+    try {
+      await InstalledApps.getAppInfo('com.berdik.letmedowngrade');
+      return true;
+    } catch (e) {
+      return false;
+    }
+  }
+
+  // Unfortunately this 'await' does not actually wait for the APK to finish installing
+  // So we only know that the install prompt was shown, but the user could still cancel w/o us knowing
+  // If appropriate criteria are met, the update (never a fresh install) happens silently  in the background
+  // But even then, we don't know if it actually succeeded
+  Future<void> installApk(DownloadedApk file) async {
+    var newInfo = await PackageArchiveInfo.fromPath(file.file.path);
+    AppInfo? appInfo;
+    try {
+      appInfo = await InstalledApps.getAppInfo(apps[file.appId]!.app.id);
+    } catch (e) {
+      // OK
+    }
+    if (appInfo != null &&
+        int.parse(newInfo.buildNumber) < appInfo.versionCode! &&
+        !(await canDowngradeApps())) {
+      throw DowngradeError();
+    }
+    if (appInfo == null ||
+        int.parse(newInfo.buildNumber) > appInfo.versionCode!) {
+      await InstallPlugin.installApk(file.file.path, 'dev.imranr.obtainium');
+    }
+    apps[file.appId]!.app.installedVersion =
+        apps[file.appId]!.app.latestVersion;
+    // Don't correct install status as installation may not be done yet
+    await saveApps([apps[file.appId]!.app],
+        attemptToCorrectInstallStatus: false);
+  }
+
+  Future<String?> confirmApkUrl(App app, BuildContext? context) async {
+    // If the App has more than one APK, the user should pick one (if context provided)
+    String? apkUrl = app.apkUrls[app.preferredApkIndex];
+    // get device supported architecture
+    List<String> archs = (await DeviceInfoPlugin().androidInfo).supportedAbis;
+
+    if (app.apkUrls.length > 1 && context != null) {
+      apkUrl = await showDialog(
+          context: context,
+          builder: (BuildContext ctx) {
+            return APKPicker(
+              app: app,
+              initVal: apkUrl,
+              archs: archs,
+            );
+          });
+    }
+    // If the picked APK comes from an origin different from the source, get user confirmation (if context provided)
+    if (apkUrl != null &&
+        Uri.parse(apkUrl).origin != Uri.parse(app.url).origin &&
+        context != null) {
+      if (await showDialog(
+              context: context,
+              builder: (BuildContext ctx) {
+                return APKOriginWarningDialog(
+                    sourceUrl: app.url, apkUrl: apkUrl!);
+              }) !=
+          true) {
+        apkUrl = null;
+      }
+    }
+    return apkUrl;
+  }
+
+  // Given a list of AppIds, uses stored info about the apps to download APKs and install them
+  // If the APKs can be installed silently, they are
+  // If no BuildContext is provided, apps that require user interaction are ignored
+  // If user input is needed and the App is in the background, a notification is sent to get the user's attention
+  // Returns an array of Ids for Apps that were successfully downloaded, regardless of installation result
+  Future<List<String>> downloadAndInstallLatestApps(
+      List<String> appIds, BuildContext? context) async {
+    List<String> appsToInstall = [];
+    List<String> trackOnlyAppsToUpdate = [];
+    // For all specified Apps, filter out those for which:
+    // 1. A URL cannot be picked
+    // 2. That cannot be installed silently (IF no buildContext was given for interactive install)
     for (var id in appIds) {
       if (apps[id] == null) {
-        throw 'App not found';
+        throw ObtainiumError(tr('appNotFound'));
       }
-      // If the App has more than one APK, the user should pick one
+      String? apkUrl;
-      String? apkUrl = apps[id]!.app.apkUrls[apps[id]!.app.preferredApkIndex];
+      if (!apps[id]!.app.trackOnly) {
-      if (apps[id]!.app.apkUrls.length > 1) {
+        apkUrl = await confirmApkUrl(apps[id]!.app, context);
-        apkUrl = await showDialog(
-            context: context,
-            builder: (BuildContext ctx) {
-              return APKPicker(app: apps[id]!.app, initVal: apkUrl);
-            });
-      }
-      // If the picked APK comes from an origin different from the source, get user confirmation
-      if (apkUrl != null &&
-          Uri.parse(apkUrl).origin != Uri.parse(apps[id]!.app.url).origin) {
-        if (await showDialog(
-                context: context,
-                builder: (BuildContext ctx) {
-                  return APKOriginWarningDialog(
-                      sourceUrl: apps[id]!.app.url, apkUrl: apkUrl!);
-                }) !=
-            true) {
-          apkUrl = null;
-        }
       }
       if (apkUrl != null) {
         int urlInd = apps[id]!.app.apkUrls.indexOf(apkUrl);
         if (urlInd != apps[id]!.app.preferredApkIndex) {
           apps[id]!.app.preferredApkIndex = urlInd;
-          await saveApp(apps[id]!.app);
+          await saveApps([apps[id]!.app]);
         }
-        appsToInstall.putIfAbsent(id, () => apkUrl!);
+        if (context != null || await canInstallSilently(apps[id]!.app)) {
+          appsToInstall.add(id);
+        }
+      }
+      if (apps[id]!.app.trackOnly) {
+        trackOnlyAppsToUpdate.add(id);
+      }
+    }
+    // Mark all specified track-only apps as latest
+    saveApps(trackOnlyAppsToUpdate.map((e) {
+      var a = apps[e]!.app;
+      a.installedVersion = a.latestVersion;
+      return a;
+    }).toList());
+    // Download APKs for all Apps to be installed
+    MultiAppMultiError errors = MultiAppMultiError();
+    List<DownloadedApk?> downloadedFiles =
+        await Future.wait(appsToInstall.map((id) async {
+      try {
+        return await downloadApp(apps[id]!.app, context);
+      } catch (e) {
+        errors.add(id, e.toString());
+      }
+      return null;
+    }));
+    downloadedFiles =
+        downloadedFiles.where((element) => element != null).toList();
+    // Separate the Apps to install into silent and regular lists
+    List<DownloadedApk> silentUpdates = [];
+    List<DownloadedApk> regularInstalls = [];
+    for (var f in downloadedFiles) {
+      bool willBeSilent = await canInstallSilently(apps[f!.appId]!.app);
+      if (willBeSilent) {
+        silentUpdates.add(f);
+      } else {
+        regularInstalls.add(f);
       }
     }
 
-    List<ApkFile> downloadedFiles = await Future.wait(appsToInstall.entries
+    // Move everything to the regular install list (since silent updates don't currently work) - TODO
-        .map((entry) => downloadApp(entry.value, entry.key)));
+    regularInstalls.addAll(silentUpdates);
 
-    if (!isForeground) {
+    // If Obtainium is being installed, it should be the last one
-      await notificationsProvider.notify(completeInstallationNotification,
+    List<DownloadedApk> moveObtainiumToStart(List<DownloadedApk> items) {
-          cancelExisting: true);
+      DownloadedApk? temp;
-      await FGBGEvents.stream.first == FGBGType.foreground;
+      items.removeWhere((element) {
-      await notificationsProvider.cancel(completeInstallationNotification.id);
+        bool res =
-      // We need to wait for the App to come to the foreground to install it
+            element.appId == obtainiumId || element.appId == obtainiumTempId;
-      // Can't try to call install plugin in a background isolate (may not have worked anyways) because of:
+        if (res) {
-      // https://github.com/flutter/flutter/issues/13937
+          temp = element;
+        }
+        return res;
+      });
+      if (temp != null) {
+        items = [temp!, ...items];
+      }
+      return items;
     }
 
-    // Unfortunately this 'await' does not actually wait for the APK to finish installing
+    silentUpdates = moveObtainiumToStart(silentUpdates);
-    // So we only know that the install prompt was shown, but the user could still cancel w/o us knowing
+    regularInstalls = moveObtainiumToStart(regularInstalls);
-    // This also does not use the 'session-based' installer API, so background/silent updates are impossible
+
-    for (var f in downloadedFiles) {
+    // // Install silent updates (uncomment when it works - TODO)
-      await InstallPlugin.installApk(f.file.path, 'dev.imranr.obtainium');
+    // for (var u in silentUpdates) {
-      apps[f.appId]!.app.installedVersion = apps[f.appId]!.app.latestVersion;
+    //   await installApk(u, silent: true); // Would need to add silent option
-      await saveApp(apps[f.appId]!.app);
+    // }
+
+    // Do regular installs
+    if (regularInstalls.isNotEmpty && context != null) {
+      // ignore: use_build_context_synchronously
+      await waitForUserToReturnToForeground(context);
+      for (var i in regularInstalls) {
+        try {
+          await installApk(i);
+        } catch (e) {
+          errors.add(i.appId, e.toString());
+        }
+      }
     }
 
-    return downloadedFiles.isNotEmpty;
+    if (errors.content.isNotEmpty) {
+      throw errors;
+    }
+
+    NotificationsProvider().cancel(UpdateNotification([]).id);
+
+    return downloadedFiles.map((e) => e!.appId).toList();
   }
 
   Future<Directory> getAppsDir() async {
@@ -174,96 +388,203 @@ class AppsProvider with ChangeNotifier {
     return appsDir;
   }
 
-  Future<void> deleteSavedAPKs() async {
+  Future<AppInfo?> getInstalledInfo(String? packageName) async {
-    (await getExternalStorageDirectory())
+    if (packageName != null) {
-        ?.listSync()
+      try {
-        .where((element) => element.path.endsWith('.apk'))
+        return await InstalledApps.getAppInfo(packageName);
-        .forEach((element) {
+      } catch (e) {
-      element.deleteSync();
+        // OK
-    });
-  }
-
-  Future<void> loadApps() async {
-    loadingApps = true;
-    notifyListeners();
-    List<FileSystemEntity> appFiles = (await getAppsDir())
-        .listSync()
-        .where((item) => item.path.toLowerCase().endsWith('.json'))
-        .toList();
-    apps.clear();
-    for (int i = 0; i < appFiles.length; i++) {
-      App app =
-          App.fromJson(jsonDecode(File(appFiles[i].path).readAsStringSync()));
-      apps.putIfAbsent(app.id, () => AppInMemory(app, null));
-    }
-    loadingApps = false;
-    notifyListeners();
-  }
-
-  Future<void> saveApp(App app) async {
-    File('${(await getAppsDir()).path}/${app.id}.json')
-        .writeAsStringSync(jsonEncode(app.toJson()));
-    apps.update(app.id, (value) => AppInMemory(app, value.downloadProgress),
-        ifAbsent: () => AppInMemory(app, null));
-    notifyListeners();
-  }
-
-  Future<void> removeApp(String appId) async {
-    File file = File('${(await getAppsDir()).path}/$appId.json');
-    if (file.existsSync()) {
-      file.deleteSync();
-    }
-    if (apps.containsKey(appId)) {
-      apps.remove(appId);
-    }
-    notifyListeners();
-  }
-
-  bool checkAppObjectForUpdate(App app) {
-    if (!apps.containsKey(app.id)) {
-      throw 'App not found';
-    }
-    return app.latestVersion != apps[app.id]?.app.installedVersion;
-  }
-
-  Future<App?> getUpdate(String appId) async {
-    App? currentApp = apps[appId]!.app;
-    App newApp = await SourceProvider().getApp(currentApp.url);
-    if (newApp.latestVersion != currentApp.latestVersion) {
-      newApp.installedVersion = currentApp.installedVersion;
-      if (currentApp.preferredApkIndex < newApp.apkUrls.length) {
-        newApp.preferredApkIndex = currentApp.preferredApkIndex;
       }
-      await saveApp(newApp);
-      return newApp;
     }
     return null;
   }
 
-  Future<List<App>> checkUpdates() async {
+  // If the App says it is installed but installedInfo is null, set it to not installed
+  // If the App says is is not installed but installedInfo exists, set it to the real installed version
+  // If the internal version does not match the real one, sync them if the App supports enhanced version detection
+  // Enhanced version detection will be true if the version extracted from source matches the standard version format
+  // Don't save changes, just return the object if changes were made (else null)
+  // If in a background isolate, return null straight away as the required plugin won't work anyways
+  App? getCorrectedInstallStatusAppIfPossible(App app, AppInfo? installedInfo) {
+    if (forBGTask) {
+      return null; // Can't correct in the background isolate
+    }
+    var modded = false;
+    if (installedInfo == null &&
+        app.installedVersion != null &&
+        !app.trackOnly) {
+      app.installedVersion = null;
+      modded = true;
+    } else if (installedInfo != null && app.installedVersion == null) {
+      app.installedVersion = installedInfo.versionName;
+      modded = true;
+    } else if (installedInfo?.versionName != app.installedVersion &&
+        app.enhancedVersionDetection &&
+        !app.trackOnly) {
+      app.installedVersion = installedInfo?.versionName;
+      modded = true;
+    }
+    return modded ? app : null;
+  }
+
+  Future<void> loadApps() async {
+    while (loadingApps) {
+      await Future.delayed(const Duration(microseconds: 1));
+    }
+    loadingApps = true;
+    notifyListeners();
+    List<App> newApps = (await getAppsDir())
+        .listSync()
+        .where((item) => item.path.toLowerCase().endsWith('.json'))
+        .map((e) => App.fromJson(jsonDecode(File(e.path).readAsStringSync())))
+        .toList();
+    var idsToDelete = apps.values
+        .map((e) => e.app.id)
+        .toSet()
+        .difference(newApps.map((e) => e.id).toSet());
+    for (var id in idsToDelete) {
+      apps.remove(id);
+    }
+    var sp = SourceProvider();
+    List<List<String>> errors = [];
+    for (int i = 0; i < newApps.length; i++) {
+      var info = await getInstalledInfo(newApps[i].id);
+      try {
+        sp.getSource(newApps[i].url);
+        apps[newApps[i].id] = AppInMemory(newApps[i], null, info);
+      } catch (e) {
+        errors.add([newApps[i].id, newApps[i].name, e.toString()]);
+      }
+    }
+    if (errors.isNotEmpty) {
+      removeApps(errors.map((e) => e[0]).toList());
+      NotificationsProvider().notify(
+          AppsRemovedNotification(errors.map((e) => [e[1], e[2]]).toList()));
+    }
+    loadingApps = false;
+    notifyListeners();
+    List<App> modifiedApps = [];
+    for (var app in apps.values) {
+      var moddedApp =
+          getCorrectedInstallStatusAppIfPossible(app.app, app.installedInfo);
+      if (moddedApp != null) {
+        modifiedApps.add(moddedApp);
+      }
+    }
+    if (modifiedApps.isNotEmpty) {
+      await saveApps(modifiedApps);
+    }
+  }
+
+  Future<void> saveApps(List<App> apps,
+      {bool attemptToCorrectInstallStatus = true}) async {
+    for (var app in apps) {
+      AppInfo? info = await getInstalledInfo(app.id);
+      app.name = info?.name ?? app.name;
+      if (attemptToCorrectInstallStatus) {
+        app = getCorrectedInstallStatusAppIfPossible(app, info) ?? app;
+      }
+      File('${(await getAppsDir()).path}/${app.id}.json')
+          .writeAsStringSync(jsonEncode(app.toJson()));
+      this.apps.update(
+          app.id, (value) => AppInMemory(app, value.downloadProgress, info),
+          ifAbsent: () => AppInMemory(app, null, info));
+    }
+    notifyListeners();
+  }
+
+  Future<void> removeApps(List<String> appIds) async {
+    for (var appId in appIds) {
+      File file = File('${(await getAppsDir()).path}/$appId.json');
+      if (file.existsSync()) {
+        file.deleteSync();
+      }
+      if (apps.containsKey(appId)) {
+        apps.remove(appId);
+      }
+    }
+    if (appIds.isNotEmpty) {
+      notifyListeners();
+    }
+  }
+
+  Future<App?> checkUpdate(String appId) async {
+    App? currentApp = apps[appId]!.app;
+    SourceProvider sourceProvider = SourceProvider();
+    App newApp = await sourceProvider.getApp(
+        sourceProvider.getSource(currentApp.url),
+        currentApp.url,
+        currentApp.additionalData,
+        name: currentApp.name,
+        id: currentApp.id,
+        pinned: currentApp.pinned,
+        trackOnly: currentApp.trackOnly,
+        installedVersion: currentApp.installedVersion);
+    if (currentApp.preferredApkIndex < newApp.apkUrls.length) {
+      newApp.preferredApkIndex = currentApp.preferredApkIndex;
+    }
+    await saveApps([newApp]);
+    return newApp.latestVersion != currentApp.latestVersion ? newApp : null;
+  }
+
+  Future<List<App>> checkUpdates(
+      {DateTime? ignoreAppsCheckedAfter,
+      bool throwErrorsForRetry = false}) async {
     List<App> updates = [];
+    MultiAppMultiError errors = MultiAppMultiError();
     if (!gettingUpdates) {
       gettingUpdates = true;
-
+      try {
-      List<String> appIds = apps.keys.toList();
+        List<String> appIds = apps.values
-      for (int i = 0; i < appIds.length; i++) {
+            .where((app) =>
-        App? newApp = await getUpdate(appIds[i]);
+                app.app.lastUpdateCheck == null ||
-        if (newApp != null) {
+                ignoreAppsCheckedAfter == null ||
-          updates.add(newApp);
+                app.app.lastUpdateCheck!.isBefore(ignoreAppsCheckedAfter))
+            .map((e) => e.app.id)
+            .toList();
+        appIds.sort((a, b) => (apps[a]!.app.lastUpdateCheck ??
+                DateTime.fromMicrosecondsSinceEpoch(0))
+            .compareTo(apps[b]!.app.lastUpdateCheck ??
+                DateTime.fromMicrosecondsSinceEpoch(0)));
+        for (int i = 0; i < appIds.length; i++) {
+          App? newApp;
+          try {
+            newApp = await checkUpdate(appIds[i]);
+          } catch (e) {
+            if ((e is RateLimitError || e is SocketException) &&
+                throwErrorsForRetry) {
+              rethrow;
+            }
+            errors.add(appIds[i], e.toString());
+          }
+          if (newApp != null) {
+            updates.add(newApp);
+          }
         }
+      } finally {
+        gettingUpdates = false;
       }
-      gettingUpdates = false;
+    }
+    if (errors.content.isNotEmpty) {
+      throw errors;
     }
     return updates;
   }
 
-  List<String> getExistingUpdates() {
+  List<String> findExistingUpdates(
+      {bool installedOnly = false, bool nonInstalledOnly = false}) {
     List<String> updateAppIds = [];
     List<String> appIds = apps.keys.toList();
     for (int i = 0; i < appIds.length; i++) {
       App? app = apps[appIds[i]]!.app;
-      if (app.installedVersion != app.latestVersion) {
+      if (app.installedVersion != app.latestVersion &&
-        updateAppIds.add(app.id);
+          (!installedOnly || !nonInstalledOnly)) {
+        if ((app.installedVersion == null &&
+                (nonInstalledOnly || !installedOnly) ||
+            (app.installedVersion != null &&
+                (installedOnly || !nonInstalledOnly)))) {
+          updateAppIds.add(app.id);
+        }
       }
     }
     return updateAppIds;
@@ -271,44 +592,65 @@ class AppsProvider with ChangeNotifier {
 
   Future<String> exportApps() async {
     Directory? exportDir = Directory('/storage/emulated/0/Download');
-    String path = 'Downloads';
+    String path = 'Downloads'; // TODO: Is this true on non-english phones?
     if (!exportDir.existsSync()) {
       exportDir = await getExternalStorageDirectory();
       path = exportDir!.path;
     }
     File export = File(
-        '${exportDir.path}/obtainium-export-${DateTime.now().millisecondsSinceEpoch}.json');
+        '${exportDir.path}/${tr('obtainiumExportHyphenatedLowercase')}-${DateTime.now().millisecondsSinceEpoch}.json');
     export.writeAsStringSync(
         jsonEncode(apps.values.map((e) => e.app.toJson()).toList()));
     return path;
   }
 
   Future<int> importApps(String appsJSON) async {
-    // File picker does not work in android 13, so the user must paste the JSON directly into Obtainium to import Apps
     List<App> importedApps = (jsonDecode(appsJSON) as List<dynamic>)
         .map((e) => App.fromJson(e))
         .toList();
-    for (App a in importedApps) {
+    while (loadingApps) {
-      a.installedVersion =
+      await Future.delayed(const Duration(microseconds: 1));
-          apps.containsKey(a.id) ? apps[a]?.app.installedVersion : null;
-      await saveApp(a);
     }
+    for (App a in importedApps) {
+      if (apps[a.id]?.app.installedVersion != null) {
+        a.installedVersion = apps[a.id]?.app.installedVersion;
+      }
+    }
+    await saveApps(importedApps);
     notifyListeners();
     return importedApps.length;
   }
 
   @override
   void dispose() {
-    foregroundSubscription.cancel();
+    foregroundSubscription?.cancel();
     super.dispose();
   }
+
+  Future<List<List<String>>> addAppsByURL(List<String> urls) async {
+    List<dynamic> results = await SourceProvider().getAppsByURLNaive(urls,
+        ignoreUrls: apps.values.map((e) => e.app.url).toList());
+    List<App> pps = results[0];
+    Map<String, dynamic> errorsMap = results[1];
+    for (var app in pps) {
+      if (apps.containsKey(app.id)) {
+        errorsMap.addAll({app.id: tr('appAlreadyAdded')});
+      } else {
+        await saveApps([app]);
+      }
+    }
+    List<List<String>> errors =
+        errorsMap.keys.map((e) => [e, errorsMap[e].toString()]).toList();
+    return errors;
+  }
 }
 
 class APKPicker extends StatefulWidget {
-  const APKPicker({super.key, required this.app, this.initVal});
+  const APKPicker({super.key, required this.app, this.initVal, this.archs});
 
   final App app;
   final String? initVal;
+  final List<String>? archs;
 
   @override
   State<APKPicker> createState() => _APKPickerState();
@@ -322,32 +664,50 @@ class _APKPickerState extends State<APKPicker> {
     apkUrl ??= widget.initVal;
     return AlertDialog(
       scrollable: true,
-      title: const Text('Pick an APK'),
+      title: Text(tr('pickAnAPK')),
       content: Column(children: [
-        Text('${widget.app.name} has more than one package:'),
+        Text(tr('appHasMoreThanOnePackage', args: [widget.app.name])),
         const SizedBox(height: 16),
-        ...widget.app.apkUrls.map((u) => RadioListTile<String>(
+        ...widget.app.apkUrls.map(
-            title: Text(Uri.parse(u).pathSegments.last),
+          (u) => RadioListTile<String>(
-            value: u,
+              title: Text(Uri.parse(u)
-            groupValue: apkUrl,
+                  .pathSegments
-            onChanged: (String? val) {
+                  .where((element) => element.isNotEmpty)
-              setState(() {
+                  .last),
-                apkUrl = val;
+              value: u,
-              });
+              groupValue: apkUrl,
-            }))
+              onChanged: (String? val) {
+                setState(() {
+                  apkUrl = val;
+                });
+              }),
+        ),
+        if (widget.archs != null)
+          const SizedBox(
+            height: 16,
+          ),
+        if (widget.archs != null)
+          Text(
+            widget.archs!.length == 1
+                ? tr('deviceSupportsXArch', args: [widget.archs![0]])
+                : tr('deviceSupportsFollowingArchs') +
+                    list2FriendlyString(
+                        widget.archs!.map((e) => '\'$e\'').toList()),
+            style: const TextStyle(fontStyle: FontStyle.italic, fontSize: 12),
+          ),
       ]),
       actions: [
         TextButton(
             onPressed: () {
               Navigator.of(context).pop(null);
             },
-            child: const Text('Cancel')),
+            child: Text(tr('cancel'))),
         TextButton(
             onPressed: () {
               HapticFeedback.selectionClick();
               Navigator.of(context).pop(apkUrl);
             },
-            child: const Text('Continue'))
+            child: Text(tr('continue')))
       ],
     );
   }
@@ -369,21 +729,23 @@ class _APKOriginWarningDialogState extends State<APKOriginWarningDialog> {
   Widget build(BuildContext context) {
     return AlertDialog(
       scrollable: true,
-      title: const Text('Warning'),
+      title: Text(tr('warning')),
-      content: Text(
+      content: Text(tr('sourceIsXButPackageFromYPrompt', args: [
-          'The App source is \'${Uri.parse(widget.sourceUrl).host}\' but the release package comes from \'${Uri.parse(widget.apkUrl).host}\'. Continue?'),
+        Uri.parse(widget.sourceUrl).host,
+        Uri.parse(widget.apkUrl).host
+      ])),
       actions: [
         TextButton(
             onPressed: () {
               Navigator.of(context).pop(null);
             },
-            child: const Text('Cancel')),
+            child: Text(tr('cancel'))),
         TextButton(
             onPressed: () {
               HapticFeedback.selectionClick();
               Navigator.of(context).pop(true);
             },
-            child: const Text('Continue'))
+            child: Text(tr('continue')))
       ],
     );
   }

lib/providers/logs_provider.dart

@@ -0,0 +1,112 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/foundation.dart';
+import 'package:sqflite/sqflite.dart';
+
+const String logTable = 'logs';
+const String idColumn = '_id';
+const String levelColumn = 'level';
+const String messageColumn = 'message';
+const String timestampColumn = 'timestamp';
+const String dbPath = 'logs.db';
+
+enum LogLevels { debug, info, warning, error }
+
+class Log {
+  int? id;
+  late LogLevels level;
+  late String message;
+  DateTime timestamp = DateTime.now();
+
+  Map<String, Object?> toMap() {
+    var map = <String, Object?>{
+      idColumn: id,
+      levelColumn: level.index,
+      messageColumn: message,
+      timestampColumn: timestamp.millisecondsSinceEpoch
+    };
+    return map;
+  }
+
+  Log(this.message, this.level);
+
+  Log.fromMap(Map<String, Object?> map) {
+    id = map[idColumn] as int;
+    level = LogLevels.values.elementAt(map[levelColumn] as int);
+    message = map[messageColumn] as String;
+    timestamp =
+        DateTime.fromMillisecondsSinceEpoch(map[timestampColumn] as int);
+  }
+
+  @override
+  String toString() {
+    return '${timestamp.toString()}: ${level.name}: $message';
+  }
+}
+
+class LogsProvider {
+  LogsProvider({bool runDefaultClear = true}) {
+    clear(before: DateTime.now().subtract(const Duration(days: 7)));
+  }
+
+  Database? db;
+
+  Future<Database> getDB() async {
+    db ??= await openDatabase(dbPath, version: 1,
+        onCreate: (Database db, int version) async {
+      await db.execute('''
+create table if not exists $logTable ( 
+  $idColumn integer primary key autoincrement, 
+  $levelColumn integer not null,
+  $messageColumn text not null,
+  $timestampColumn integer not null)
+''');
+    });
+    return db!;
+  }
+
+  Future<Log> add(String message, {LogLevels level = LogLevels.info}) async {
+    Log l = Log(message, level);
+    l.id = await (await getDB()).insert(logTable, l.toMap());
+    if (kDebugMode) {
+      print(l);
+    }
+    return l;
+  }
+
+  Future<List<Log>> get({DateTime? before, DateTime? after}) async {
+    var where = getWhereDates(before: before, after: after);
+    return (await (await getDB())
+            .query(logTable, where: where.key, whereArgs: where.value))
+        .map((e) => Log.fromMap(e))
+        .toList();
+  }
+
+  Future<int> clear({DateTime? before, DateTime? after}) async {
+    var where = getWhereDates(before: before, after: after);
+    var res = await (await getDB())
+        .delete(logTable, where: where.key, whereArgs: where.value);
+    if (res > 0) {
+      add(plural('clearedNLogsBeforeXAfterY', res,
+          namedArgs: {'before': before.toString(), 'after': after.toString()},
+          name: 'n'));
+    }
+    return res;
+  }
+}
+
+MapEntry<String?, List<int>?> getWhereDates(
+    {DateTime? before, DateTime? after}) {
+  List<String> where = [];
+  List<int> whereArgs = [];
+  if (before != null) {
+    where.add('$timestampColumn < ?');
+    whereArgs.add(before.millisecondsSinceEpoch);
+  }
+  if (after != null) {
+    where.add('$timestampColumn > ?');
+    whereArgs.add(after.millisecondsSinceEpoch);
+  }
+  return whereArgs.isEmpty
+      ? const MapEntry(null, null)
+      : MapEntry(where.join(' and '), whereArgs);
+}

lib/providers/notifications_provider.dart

@@ -1,6 +1,7 @@
 // Exposes functions that can be used to send notifications to the user
 // Contains a set of pre-defined ObtainiumNotification objects that should be used throughout the app
 
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:obtainium/providers/source_provider.dart';
 
@@ -12,24 +13,41 @@ class ObtainiumNotification {
   late String channelName;
   late String channelDescription;
   Importance importance;
+  bool onlyAlertOnce;
 
   ObtainiumNotification(this.id, this.title, this.message, this.channelCode,
-      this.channelName, this.channelDescription, this.importance);
+      this.channelName, this.channelDescription, this.importance,
+      {this.onlyAlertOnce = false});
 }
 
 class UpdateNotification extends ObtainiumNotification {
   UpdateNotification(List<App> updates)
       : super(
             2,
-            'Updates Available',
+            tr('updatesAvailable'),
             '',
             'UPDATES_AVAILABLE',
-            'Updates Available',
+            tr('updatesAvailable'),
-            'Notifies the user that updates are available for one or more Apps tracked by Obtainium',
+            tr('updatesAvailableNotifDescription'),
             Importance.max) {
+    message = updates.isEmpty
+        ? tr('noNewUpdates')
+        : updates.length == 1
+            ? tr('xHasAnUpdate', args: [updates[0].name])
+            : plural('xAndNMoreUpdatesAvailable', updates.length - 1,
+                args: [updates[0].name]);
+  }
+}
+
+class SilentUpdateNotification extends ObtainiumNotification {
+  SilentUpdateNotification(List<App> updates)
+      : super(3, tr('appsUpdated'), '', 'APPS_UPDATED', tr('appsUpdated'),
+            tr('appsUpdatedNotifDescription'), Importance.defaultImportance) {
     message = updates.length == 1
-        ? '${updates[0].name} has an update.'
+        ? tr('xWasUpdatedToY',
-        : '${(updates.length == 2 ? '${updates[0].name} and ${updates[1].name}' : '${updates[0].name} and ${updates.length - 1} more apps')} have updates.';
+            args: [updates[0].name, updates[0].latestVersion])
+        : plural('xAndNMoreUpdatesInstalled', updates.length - 1,
+            args: [updates[0].name]);
   }
 }
 
@@ -37,30 +55,57 @@ class ErrorCheckingUpdatesNotification extends ObtainiumNotification {
   ErrorCheckingUpdatesNotification(String error)
       : super(
             5,
-            'Error Checking for Updates',
+            tr('errorCheckingUpdates'),
             error,
             'BG_UPDATE_CHECK_ERROR',
-            'Error Checking for Updates',
+            tr('errorCheckingUpdates'),
-            'A notification that shows when background update checking fails',
+            tr('errorCheckingUpdatesNotifDescription'),
             Importance.high);
 }
 
+class AppsRemovedNotification extends ObtainiumNotification {
+  AppsRemovedNotification(List<List<String>> namedReasons)
+      : super(6, tr('appsRemoved'), '', 'APPS_REMOVED', tr('appsRemoved'),
+            tr('appsRemovedNotifDescription'), Importance.max) {
+    message = '';
+    for (var r in namedReasons) {
+      message += '${tr('xWasRemovedDueToErrorY', args: [r[0], r[1]])} \n';
+    }
+    message = message.trim();
+  }
+}
+
+class DownloadNotification extends ObtainiumNotification {
+  DownloadNotification(String appName, int progPercent)
+      : super(
+            appName.hashCode,
+            'Downloading $appName',
+            '$progPercent%',
+            'APP_DOWNLOADING',
+            'Downloading App',
+            'Notifies the user of the progress in downloading an App',
+            Importance.defaultImportance,
+            onlyAlertOnce: true) {
+    message = tr('percentProgress', args: [progPercent.toString()]);
+  }
+}
+
 final completeInstallationNotification = ObtainiumNotification(
     1,
-    'Complete App Installation',
+    tr('completeAppInstallation'),
-    'Obtainium must be open to install Apps',
+    tr('obtainiumMustBeOpenToInstallApps'),
     'COMPLETE_INSTALL',
-    'Complete App Installation',
+    tr('completeAppInstallation'),
-    'Asks the user to return to Obtanium to finish installing an App',
+    tr('completeAppInstallationNotifDescription'),
     Importance.max);
 
 final checkingUpdatesNotification = ObtainiumNotification(
     4,
-    'Checking for Updates',
+    tr('checkingForUpdates'),
     '',
     'BG_UPDATE_CHECK',
-    'Checking for Updates',
+    tr('checkingForUpdates'),
-    'Transient notification that appears when checking for updates',
+    tr('checkingForUpdatesNotifDescription'),
     Importance.min);
 
 class NotificationsProvider {
@@ -100,7 +145,9 @@ class NotificationsProvider {
       String channelName,
       String channelDescription,
       Importance importance,
-      {bool cancelExisting = false}) async {
+      {bool cancelExisting = false,
+      int? progPercent,
+      bool onlyAlertOnce = false}) async {
     if (cancelExisting) {
       await cancel(id);
     }
@@ -116,12 +163,16 @@ class NotificationsProvider {
                 channelDescription: channelDescription,
                 importance: importance,
                 priority: importanceToPriority[importance]!,
-                groupKey: 'dev.imranr.obtainium.$channelCode')));
+                groupKey: 'dev.imranr.obtainium.$channelCode',
+                progress: progPercent ?? 0,
+                maxProgress: 100,
+                showProgress: progPercent != null,
+                onlyAlertOnce: onlyAlertOnce)));
   }
 
   Future<void> notify(ObtainiumNotification notif,
           {bool cancelExisting = false}) =>
       notifyRaw(notif.id, notif.title, notif.message, notif.channelCode,
           notif.channelName, notif.channelDescription, notif.importance,
-          cancelExisting: cancelExisting);
+          cancelExisting: cancelExisting, onlyAlertOnce: notif.onlyAlertOnce);
 }

lib/providers/settings_provider.dart

@@ -1,10 +1,15 @@
 // Exposes functions used to save/load app settings
 
+import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
 import 'package:fluttertoast/fluttertoast.dart';
+import 'package:obtainium/app_sources/github.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
+String obtainiumTempId = 'imranr98_obtainium_${GitHub().host}';
+String obtainiumId = 'dev.imranr.obtainium';
+
 enum ThemeSettings { system, light, dark }
 
 enum ColourSettings { basic, materialYou }
@@ -13,6 +18,16 @@ enum SortColumnSettings { added, nameAuthor, authorName }
 
 enum SortOrderSettings { ascending, descending }
 
+const maxAPIRateLimitMinutes = 30;
+const minUpdateIntervalMinutes = maxAPIRateLimitMinutes + 30;
+const maxUpdateIntervalMinutes = 4320;
+List<int> updateIntervals = [15, 30, 60, 120, 180, 360, 720, 1440, 4320, 0]
+    .where((element) =>
+        (element >= minUpdateIntervalMinutes &&
+            element <= maxUpdateIntervalMinutes) ||
+        element == 0)
+    .toList();
+
 class SettingsProvider with ChangeNotifier {
   SharedPreferences? prefs;
 
@@ -45,7 +60,17 @@ class SettingsProvider with ChangeNotifier {
   }
 
   int get updateInterval {
-    return prefs?.getInt('updateInterval') ?? 1440;
+    var min = prefs?.getInt('updateInterval') ?? 360;
+    if (!updateIntervals.contains(min)) {
+      var temp = updateIntervals[0];
+      for (var i in updateIntervals) {
+        if (min > i && i != 0) {
+          temp = i;
+        }
+      }
+      min = temp;
+    }
+    return min;
   }
 
   set updateInterval(int min) {
@@ -54,8 +79,8 @@ class SettingsProvider with ChangeNotifier {
   }
 
   SortColumnSettings get sortColumn {
-    return SortColumnSettings
+    return SortColumnSettings.values[
-        .values[prefs?.getInt('sortColumn') ?? SortColumnSettings.added.index];
+        prefs?.getInt('sortColumn') ?? SortColumnSettings.nameAuthor.index];
   }
 
   set sortColumn(SortColumnSettings s) {
@@ -65,7 +90,7 @@ class SettingsProvider with ChangeNotifier {
 
   SortOrderSettings get sortOrder {
     return SortOrderSettings.values[
-        prefs?.getInt('sortOrder') ?? SortOrderSettings.descending.index];
+        prefs?.getInt('sortOrder') ?? SortOrderSettings.ascending.index];
   }
 
   set sortOrder(SortOrderSettings s) {
@@ -85,8 +110,7 @@ class SettingsProvider with ChangeNotifier {
     while (!(await Permission.requestInstallPackages.isGranted)) {
       // Explicit request as InstallPlugin request sometimes bugged
       Fluttertoast.showToast(
-          msg: 'Please allow Obtainium to install Apps',
+          msg: tr('pleaseAllowInstallPerm'), toastLength: Toast.LENGTH_LONG);
-          toastLength: Toast.LENGTH_LONG);
       if ((await Permission.requestInstallPackages.request()) ==
           PermissionStatus.granted) {
         break;
@@ -95,11 +119,29 @@ class SettingsProvider with ChangeNotifier {
   }
 
   bool get showAppWebpage {
-    return prefs?.getBool('showAppWebpage') ?? true;
+    return prefs?.getBool('showAppWebpage') ?? false;
   }
 
   set showAppWebpage(bool show) {
     prefs?.setBool('showAppWebpage', show);
     notifyListeners();
   }
+
+  bool get pinUpdates {
+    return prefs?.getBool('pinUpdates') ?? true;
+  }
+
+  set pinUpdates(bool show) {
+    prefs?.setBool('pinUpdates', show);
+    notifyListeners();
+  }
+
+  String? getSettingString(String settingId) {
+    return prefs?.getString(settingId);
+  }
+
+  void setSettingString(String settingId, String value) {
+    prefs?.setString(settingId, value);
+    notifyListeners();
+  }
 }

lib/providers/source_provider.dart

@@ -3,9 +3,20 @@
 
 import 'dart:convert';
 
+import 'package:easy_localization/easy_localization.dart';
 import 'package:html/dom.dart';
 import 'package:http/http.dart';
-import 'package:html/parser.dart';
+import 'package:obtainium/app_sources/apkmirror.dart';
+import 'package:obtainium/app_sources/fdroid.dart';
+import 'package:obtainium/app_sources/github.dart';
+import 'package:obtainium/app_sources/gitlab.dart';
+import 'package:obtainium/app_sources/izzyondroid.dart';
+import 'package:obtainium/app_sources/mullvad.dart';
+import 'package:obtainium/app_sources/signal.dart';
+import 'package:obtainium/app_sources/sourceforge.dart';
+import 'package:obtainium/components/generated_form.dart';
+import 'package:obtainium/custom_errors.dart';
+import 'package:obtainium/mass_app_sources/githubstars.dart';
 
 class AppNames {
   late String author;
@@ -17,8 +28,13 @@ class AppNames {
 class APKDetails {
   late String version;
   late List<String> apkUrls;
+  late bool isStandardVersionName;
 
-  APKDetails(this.version, this.apkUrls);
+  APKDetails(version, this.apkUrls) {
+    var standardVersion = extractStandardVersionName(version);
+    isStandardVersionName = standardVersion != null;
+    this.version = standardVersion ?? version;
+  }
 }
 
 class App {
@@ -30,28 +46,55 @@ class App {
   late String latestVersion;
   List<String> apkUrls = [];
   late int preferredApkIndex;
-  App(this.id, this.url, this.author, this.name, this.installedVersion,
+  late List<String> additionalData;
-      this.latestVersion, this.apkUrls, this.preferredApkIndex);
+  late DateTime? lastUpdateCheck;
+  bool pinned = false;
+  bool trackOnly = false;
+  bool enhancedVersionDetection = false;
+  App(
+      this.id,
+      this.url,
+      this.author,
+      this.name,
+      this.installedVersion,
+      this.latestVersion,
+      this.apkUrls,
+      this.preferredApkIndex,
+      this.additionalData,
+      this.lastUpdateCheck,
+      this.pinned,
+      this.trackOnly,
+      this.enhancedVersionDetection);
 
   @override
   String toString() {
-    return 'ID: $id URL: $url INSTALLED: $installedVersion LATEST: $latestVersion APK: $apkUrls';
+    return 'ID: $id URL: $url INSTALLED: $installedVersion LATEST: $latestVersion APK: $apkUrls PREFERREDAPK: $preferredApkIndex ADDITIONALDATA: ${additionalData.toString()} LASTCHECK: ${lastUpdateCheck.toString()} PINNED $pinned';
   }
 
   factory App.fromJson(Map<String, dynamic> json) => App(
-        json['id'] as String,
+      json['id'] as String,
-        json['url'] as String,
+      json['url'] as String,
-        json['author'] as String,
+      json['author'] as String,
-        json['name'] as String,
+      json['name'] as String,
-        json['installedVersion'] == null
+      json['installedVersion'] == null
-            ? null
+          ? null
-            : json['installedVersion'] as String,
+          : json['installedVersion'] as String,
-        json['latestVersion'] as String,
+      json['latestVersion'] as String,
-        List<String>.from(jsonDecode(json['apkUrls'])),
+      json['apkUrls'] == null
-        json['preferredApkIndex'] == null
+          ? []
-            ? 0
+          : List<String>.from(jsonDecode(json['apkUrls'])),
-            : json['preferredApkIndex'] as int,
+      json['preferredApkIndex'] == null ? 0 : json['preferredApkIndex'] as int,
-      );
+      json['additionalData'] == null
+          ? SourceProvider()
+              .getSource(json['url'])
+              .additionalSourceAppSpecificDefaults
+          : List<String>.from(jsonDecode(json['additionalData'])),
+      json['lastUpdateCheck'] == null
+          ? null
+          : DateTime.fromMicrosecondsSinceEpoch(json['lastUpdateCheck']),
+      json['pinned'] ?? false,
+      json['trackOnly'] ?? false,
+      json['enhancedVersionDetection'] ?? false);
 
   Map<String, dynamic> toJson() => {
         'id': id,
@@ -61,20 +104,32 @@ class App {
         'installedVersion': installedVersion,
         'latestVersion': latestVersion,
         'apkUrls': jsonEncode(apkUrls),
-        'preferredApkIndex': preferredApkIndex
+        'preferredApkIndex': preferredApkIndex,
+        'additionalData': jsonEncode(additionalData),
+        'lastUpdateCheck': lastUpdateCheck?.microsecondsSinceEpoch,
+        'pinned': pinned,
+        'trackOnly': trackOnly,
+        'enhancedVersionDetection': enhancedVersionDetection
       };
 }
 
-escapeRegEx(String s) {
+// Ensure the input is starts with HTTPS and has no WWW
-  return s.replaceAllMapped(RegExp(r'[.*+?^${}()|[\]\\]'), (x) {
+preStandardizeUrl(String url) {
-    return "\\${x[0]}";
+  if (url.toLowerCase().indexOf('http://') != 0 &&
-  });
+      url.toLowerCase().indexOf('https://') != 0) {
+    url = 'https://$url';
+  }
+  if (url.toLowerCase().indexOf('https://www.') == 0) {
+    url = 'https://${url.substring(12)}';
+  }
+  url = url
+      .split('/')
+      .where((e) => e.isNotEmpty)
+      .join('/')
+      .replaceFirst(':/', '://');
+  return url;
 }
 
-const String couldNotFindReleases = 'Unable to fetch release info';
-const String couldNotFindLatestVersion =
-    'Could not determine latest release version';
-const String notValidURL = 'Not a valid URL';
 const String noAPKFound = 'No APK found';
 
 List<String> getLinksFromParsedHTML(
@@ -88,326 +143,93 @@ List<String> getLinksFromParsedHTML(
         .map((e) => '$prependToLinks${e.attributes['href']!}')
         .toList();
 
-abstract class AppSource {
+class AppSource {
   late String host;
-  String standardizeURL(String url);
+  bool enforceTrackOnly = false;
-  Future<APKDetails> getLatestAPKDetails(String standardUrl);
-  AppNames getAppNames(String standardUrl);
-}
-
-class GitHub implements AppSource {
-  @override
-  late String host = 'github.com';
-
-  @override
   String standardizeURL(String url) {
-    RegExp standardUrlRegEx = RegExp('^https?://$host/[^/]+/[^/]+');
+    throw NotImplementedError();
-    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
-    if (match == null) {
-      throw notValidURL;
-    }
-    return url.substring(0, match.end);
   }
 
-  @override
+  Future<APKDetails> getLatestAPKDetails(
-  Future<APKDetails> getLatestAPKDetails(String standardUrl) async {
+      String standardUrl, List<String> additionalData,
-    Response res = await get(Uri.parse(
+      {bool trackOnly = false}) {
-        'https://api.$host/repos${standardUrl.substring('https://$host'.length)}/releases'));
+    throw NotImplementedError();
-    if (res.statusCode == 200) {
-      var releases = jsonDecode(res.body) as List<dynamic>;
-      // Right now, the latest non-prerelease version is picked
-      // If none exists, the latest prerelease version is picked
-      // In the future, the user could be given a choice
-      var nonPrereleaseReleases =
-          releases.where((element) => element['prerelease'] != true).toList();
-      var latestRelease = nonPrereleaseReleases.isNotEmpty
-          ? nonPrereleaseReleases[0]
-          : releases.isNotEmpty
-              ? releases[0]
-              : null;
-      if (latestRelease == null) {
-        throw couldNotFindReleases;
-      }
-      List<dynamic>? assets = latestRelease['assets'];
-      List<String>? apkUrlList = assets
-          ?.map((e) {
-            return e['browser_download_url'] != null
-                ? e['browser_download_url'] as String
-                : '';
-          })
-          .where((element) => element.toLowerCase().endsWith('.apk'))
-          .toList();
-      if (apkUrlList == null || apkUrlList.isEmpty) {
-        throw noAPKFound;
-      }
-      String? version = latestRelease['tag_name'];
-      if (version == null) {
-        throw couldNotFindLatestVersion;
-      }
-      return APKDetails(version, apkUrlList);
-    } else {
-      if (res.headers['x-ratelimit-remaining'] == '0') {
-        throw 'Rate limit reached - try again in ${(int.parse(res.headers['x-ratelimit-reset'] ?? '1800000000') / 60000000).toString()} minutes';
-      }
-
-      throw couldNotFindReleases;
-    }
   }
 
-  @override
   AppNames getAppNames(String standardUrl) {
-    String temp = standardUrl.substring(standardUrl.indexOf('://') + 3);
+    throw NotImplementedError();
-    List<String> names = temp.substring(temp.indexOf('/') + 1).split('/');
+  }
-    return AppNames(names[0], names[1]);
+
+  // Different Sources may need different kinds of additional data for Apps
+  List<List<GeneratedFormItem>> additionalSourceAppSpecificFormItems = [];
+  List<String> additionalSourceAppSpecificDefaults = [];
+
+  // Some additional data may be needed for Apps regardless of Source
+  final List<GeneratedFormItem> additionalAppSpecificSourceAgnosticFormItems = [
+    GeneratedFormItem(
+        label: tr('trackOnly'),
+        type: FormItemType.bool,
+        key: 'trackOnlyFormItemKey')
+  ];
+  final List<String> additionalAppSpecificSourceAgnosticDefaults = [''];
+
+  // Some Sources may have additional settings at the Source level (not specific to Apps) - these use SettingsProvider
+  List<GeneratedFormItem> additionalSourceSpecificSettingFormItems = [];
+
+  String? changeLogPageFromStandardUrl(String standardUrl) {
+    throw NotImplementedError();
+  }
+
+  Future<String> apkUrlPrefetchModifier(String apkUrl) async {
+    return apkUrl;
+  }
+
+  bool canSearch = false;
+  Future<Map<String, String>> search(String query) {
+    throw NotImplementedError();
+  }
+
+  String? tryInferringAppId(String standardUrl) {
+    return null;
   }
 }
 
-class GitLab implements AppSource {
+ObtainiumError getObtainiumHttpError(Response res) {
-  @override
+  return ObtainiumError(res.reasonPhrase ??
-  late String host = 'gitlab.com';
+      tr('errorWithHttpStatusCode', args: [res.statusCode.toString()]));
-
-  @override
-  String standardizeURL(String url) {
-    RegExp standardUrlRegEx = RegExp('^https?://$host/[^/]+/[^/]+');
-    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
-    if (match == null) {
-      throw notValidURL;
-    }
-    return url.substring(0, match.end);
-  }
-
-  @override
-  Future<APKDetails> getLatestAPKDetails(String standardUrl) async {
-    Response res = await get(Uri.parse('$standardUrl/-/tags?format=atom'));
-    if (res.statusCode == 200) {
-      var standardUri = Uri.parse(standardUrl);
-      var parsedHtml = parse(res.body);
-      var entry = parsedHtml.querySelector('entry');
-      var entryContent =
-          parse(parseFragment(entry?.querySelector('content')!.innerHtml).text);
-      var apkUrlList = [
-        ...getLinksFromParsedHTML(
-            entryContent,
-            RegExp(
-                '^${escapeRegEx(standardUri.path)}/uploads/[^/]+/[^/]+\\.apk\$',
-                caseSensitive: false),
-            standardUri.origin),
-        // GitLab releases may contain links to externally hosted APKs
-        ...getLinksFromParsedHTML(entryContent,
-                RegExp('/[^/]+\\.apk\$', caseSensitive: false), '')
-            .where((element) => Uri.parse(element).host != '')
-            .toList()
-      ];
-      if (apkUrlList.isEmpty) {
-        throw noAPKFound;
-      }
-
-      var entryId = entry?.querySelector('id')?.innerHtml;
-      var version =
-          entryId == null ? null : Uri.parse(entryId).pathSegments.last;
-      if (version == null) {
-        throw couldNotFindLatestVersion;
-      }
-      return APKDetails(version, apkUrlList);
-    } else {
-      throw couldNotFindReleases;
-    }
-  }
-
-  @override
-  AppNames getAppNames(String standardUrl) {
-    // Same as GitHub
-    return GitHub().getAppNames(standardUrl);
-  }
 }
 
-class Signal implements AppSource {
+String? extractStandardVersionName(String version, {bool strict = false}) {
-  @override
+  var match = RegExp(
-  late String host = 'signal.org';
+          '${strict ? '^' : ''}[0-9]+(\\.[0-9]+)+(-(alpha|beta)\\+?[0-9]+)?${strict ? '\$' : ''}')
-
+      .firstMatch(version);
-  @override
+  return match != null ? version.substring(match.start, match.end) : null;
-  String standardizeURL(String url) {
-    return 'https://$host';
-  }
-
-  @override
-  Future<APKDetails> getLatestAPKDetails(String standardUrl) async {
-    Response res =
-        await get(Uri.parse('https://updates.$host/android/latest.json'));
-    if (res.statusCode == 200) {
-      var json = jsonDecode(res.body);
-      String? apkUrl = json['url'];
-      if (apkUrl == null) {
-        throw noAPKFound;
-      }
-      String? version = json['versionName'];
-      if (version == null) {
-        throw couldNotFindLatestVersion;
-      }
-      return APKDetails(version, [apkUrl]);
-    } else {
-      throw couldNotFindReleases;
-    }
-  }
-
-  @override
-  AppNames getAppNames(String standardUrl) => AppNames('Signal', 'Signal');
 }
 
-class FDroid implements AppSource {
+abstract class MassAppUrlSource {
-  @override
+  late String name;
-  late String host = 'f-droid.org';
+  late List<String> requiredArgs;
-
+  Future<Map<String, String>> getUrlsWithDescriptions(List<String> args);
-  @override
-  String standardizeURL(String url) {
-    RegExp standardUrlRegEx = RegExp('^https?://$host/[^/]+/packages/[^/]+');
-    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
-    if (match == null) {
-      throw notValidURL;
-    }
-    return url.substring(0, match.end);
-  }
-
-  @override
-  Future<APKDetails> getLatestAPKDetails(String standardUrl) async {
-    Response res = await get(Uri.parse(standardUrl));
-    if (res.statusCode == 200) {
-      var latestReleaseDiv =
-          parse(res.body).querySelector('#latest.package-version');
-      var apkUrl = latestReleaseDiv
-          ?.querySelector('.package-version-download a')
-          ?.attributes['href'];
-      if (apkUrl == null) {
-        throw noAPKFound;
-      }
-      var version = latestReleaseDiv
-          ?.querySelector('.package-version-header b')
-          ?.innerHtml
-          .split(' ')
-          .last;
-      if (version == null) {
-        throw couldNotFindLatestVersion;
-      }
-      return APKDetails(version, [apkUrl]);
-    } else {
-      throw couldNotFindReleases;
-    }
-  }
-
-  @override
-  AppNames getAppNames(String standardUrl) {
-    return AppNames('F-Droid', Uri.parse(standardUrl).pathSegments.last);
-  }
-}
-
-class Mullvad implements AppSource {
-  @override
-  late String host = 'mullvad.net';
-
-  @override
-  String standardizeURL(String url) {
-    RegExp standardUrlRegEx = RegExp('^https?://$host');
-    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
-    if (match == null) {
-      throw notValidURL;
-    }
-    return url.substring(0, match.end);
-  }
-
-  @override
-  Future<APKDetails> getLatestAPKDetails(String standardUrl) async {
-    Response res = await get(Uri.parse('$standardUrl/en/download/android'));
-    if (res.statusCode == 200) {
-      var version = parse(res.body)
-          .querySelector('p.subtitle.is-6')
-          ?.querySelector('a')
-          ?.attributes['href']
-          ?.split('/')
-          .last;
-      if (version == null) {
-        throw couldNotFindLatestVersion;
-      }
-      return APKDetails(
-          version, ['https://mullvad.net/download/app/apk/latest']);
-    } else {
-      throw couldNotFindReleases;
-    }
-  }
-
-  @override
-  AppNames getAppNames(String standardUrl) {
-    return AppNames('Mullvad-VPN', 'Mullvad-VPN');
-  }
-}
-
-class IzzyOnDroid implements AppSource {
-  @override
-  late String host = 'android.izzysoft.de';
-
-  @override
-  String standardizeURL(String url) {
-    RegExp standardUrlRegEx = RegExp('^https?://$host/repo/apk/[^/]+');
-    RegExpMatch? match = standardUrlRegEx.firstMatch(url.toLowerCase());
-    if (match == null) {
-      throw notValidURL;
-    }
-    return url.substring(0, match.end);
-  }
-
-  @override
-  Future<APKDetails> getLatestAPKDetails(String standardUrl) async {
-    Response res = await get(Uri.parse(standardUrl));
-    if (res.statusCode == 200) {
-      var parsedHtml = parse(res.body);
-      var multipleVersionApkUrls = parsedHtml
-          .querySelectorAll('a')
-          .where((element) =>
-              element.attributes['href']?.toLowerCase().endsWith('.apk') ??
-              false)
-          .map((e) => 'https://$host${e.attributes['href'] ?? ''}')
-          .toList();
-      if (multipleVersionApkUrls.isEmpty) {
-        throw noAPKFound;
-      }
-      var version = parsedHtml
-          .querySelector('#keydata')
-          ?.querySelectorAll('b')
-          .where(
-              (element) => element.innerHtml.toLowerCase().contains('version'))
-          .toList()[0]
-          .parentNode
-          ?.parentNode
-          ?.children[1]
-          .innerHtml;
-      if (version == null) {
-        throw couldNotFindLatestVersion;
-      }
-      return APKDetails(version, [multipleVersionApkUrls[0]]);
-    } else {
-      throw couldNotFindReleases;
-    }
-  }
-
-  @override
-  AppNames getAppNames(String standardUrl) {
-    return AppNames('IzzyOnDroid', Uri.parse(standardUrl).pathSegments.last);
-  }
 }
 
 class SourceProvider {
+  // Add more source classes here so they are available via the service
   List<AppSource> sources = [
     GitHub(),
     GitLab(),
     FDroid(),
     IzzyOnDroid(),
     Mullvad(),
-    Signal()
+    Signal(),
+    SourceForge(),
+    APKMirror()
   ];
 
-  List<MassAppSource> massSources = [GitHubStars()];
+  // Add more mass url source classes here so they are available via the service
+  List<MassAppUrlSource> massUrlSources = [GitHubStars()];
 
-  // Add more source classes here so they are available via the service
   AppSource getSource(String url) {
+    url = preStandardizeUrl(url);
     AppSource? source;
     for (var s in sources) {
       if (url.toLowerCase().contains('://${s.host}')) {
@@ -416,82 +238,90 @@ class SourceProvider {
       }
     }
     if (source == null) {
-      throw 'URL does not match a known source';
+      throw UnsupportedURLError();
     }
     return source;
   }
 
-  Future<App> getApp(String url) async {
+  bool ifSourceAppsRequireAdditionalData(AppSource source) {
-    if (url.toLowerCase().indexOf('http://') != 0 &&
+    for (var row in source.additionalSourceAppSpecificFormItems) {
-        url.toLowerCase().indexOf('https://') != 0) {
+      for (var element in row) {
-      url = 'https://$url';
+        if (element.required) {
+          return true;
+        }
+      }
     }
-    if (url.toLowerCase().indexOf('https://www.') == 0) {
+    return false;
-      url = 'https://${url.substring(12)}';
-    }
-    AppSource source = getSource(url);
-    String standardUrl = source.standardizeURL(url);
-    AppNames names = source.getAppNames(standardUrl);
-    APKDetails apk = await source.getLatestAPKDetails(standardUrl);
-    return App(
-        '${names.author.toLowerCase()}_${names.name.toLowerCase()}_${source.host}',
-        standardUrl,
-        names.author[0].toUpperCase() + names.author.substring(1),
-        names.name[0].toUpperCase() + names.name.substring(1),
-        null,
-        apk.version,
-        apk.apkUrls,
-        apk.apkUrls.length - 1);
   }
 
-  /// Returns a length 2 list, where the first element is a list of Apps and
+  String generateTempID(AppNames names, AppSource source) =>
-  /// the second is a Map<String, dynamic> of URLs and errors
+      '${names.author.toLowerCase()}_${names.name.toLowerCase()}_${source.host}';
-  Future<List<dynamic>> getApps(List<String> urls) async {
+
+  bool isTempId(String id) {
+    List<String> parts = id.split('_');
+    if (parts.length < 3) {
+      return false;
+    }
+    for (int i = 0; i < parts.length - 1; i++) {
+      if (RegExp('.*[A-Z].*').hasMatch(parts[i])) {
+        // TODO: RegEx won't work for non-eng chars
+        return false;
+      }
+    }
+    return sources.map((e) => e.host).contains(parts.last);
+  }
+
+  Future<App> getApp(AppSource source, String url, List<String> additionalData,
+      {String name = '',
+      String? id,
+      bool pinned = false,
+      bool trackOnly = false,
+      String? installedVersion}) async {
+    String standardUrl = source.standardizeURL(preStandardizeUrl(url));
+    AppNames names = source.getAppNames(standardUrl);
+    APKDetails apk = await source
+        .getLatestAPKDetails(standardUrl, additionalData, trackOnly: trackOnly);
+    if (apk.apkUrls.isEmpty && !trackOnly) {
+      throw NoAPKError();
+    }
+    String apkVersion = apk.version.replaceAll('/', '-');
+    return App(
+        id ??
+            source.tryInferringAppId(standardUrl) ??
+            generateTempID(names, source),
+        standardUrl,
+        names.author[0].toUpperCase() + names.author.substring(1),
+        name.trim().isNotEmpty
+            ? name
+            : names.name[0].toUpperCase() + names.name.substring(1),
+        installedVersion,
+        apkVersion,
+        apk.apkUrls,
+        apk.apkUrls.length - 1,
+        additionalData,
+        DateTime.now(),
+        pinned,
+        trackOnly,
+        apk.isStandardVersionName &&
+            (installedVersion == null ||
+                extractStandardVersionName(installedVersion, strict: true) !=
+                    null));
+  }
+
+  // Returns errors in [results, errors] instead of throwing them
+  Future<List<dynamic>> getAppsByURLNaive(List<String> urls,
+      {List<String> ignoreUrls = const []}) async {
     List<App> apps = [];
     Map<String, dynamic> errors = {};
-    for (var url in urls) {
+    for (var url in urls.where((element) => !ignoreUrls.contains(element))) {
       try {
-        apps.add(await getApp(url));
+        var source = getSource(url);
+        apps.add(await getApp(
+            source, url, source.additionalSourceAppSpecificDefaults));
       } catch (e) {
         errors.addAll(<String, dynamic>{url: e});
       }
     }
     return [apps, errors];
   }
-
-  List<String> getSourceHosts() => sources.map((e) => e.host).toList();
-}
-
-abstract class MassAppSource {
-  late String name;
-  late List<String> requiredArgs;
-  Future<List<String>> getUrls(List<String> args);
-}
-
-class GitHubStars implements MassAppSource {
-  @override
-  late String name = 'GitHub Starred Repos';
-
-  @override
-  late List<String> requiredArgs = ['Username'];
-
-  @override
-  Future<List<String>> getUrls(List<String> args) async {
-    if (args.length != requiredArgs.length) {
-      throw 'Wrong number of arguments provided';
-    }
-    Response res =
-        await get(Uri.parse('https://api.github.com/users/${args[0]}/starred'));
-    if (res.statusCode == 200) {
-      return (jsonDecode(res.body) as List<dynamic>)
-          .map((e) => e['html_url'] as String)
-          .toList();
-    } else {
-      if (res.headers['x-ratelimit-remaining'] == '0') {
-        throw 'Rate limit reached - try again in ${(int.parse(res.headers['x-ratelimit-reset'] ?? '1800000000') / 60000000).toString()} minutes';
-      }
-
-      throw 'Unable to find user\'s starred repos';
-    }
-  }
 }

pubspec.lock

@@ -1,20 +1,27 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  android_alarm_manager_plus:
+    dependency: "direct main"
+    description:
+      name: android_alarm_manager_plus
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
   animations:
     dependency: "direct main"
     description:
       name: animations
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.4"
+    version: "2.0.7"
   archive:
     dependency: transitive
     description:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.3.1"
+    version: "3.3.5"
   args:
     dependency: transitive
     description:
@@ -71,6 +78,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.16.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.1"
+  cross_file:
+    dependency: transitive
+    description:
+      name: cross_file
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.3+2"
   crypto:
     dependency: transitive
     description:
@@ -105,42 +126,14 @@ packages:
       name: device_info_plus
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.1.2"
+    version: "8.0.0"
-  device_info_plus_linux:
-    dependency: transitive
-    description:
-      name: device_info_plus_linux
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.0.0"
-  device_info_plus_macos:
-    dependency: transitive
-    description:
-      name: device_info_plus_macos
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.0.0"
   device_info_plus_platform_interface:
     dependency: transitive
     description:
       name: device_info_plus_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.0"
+    version: "7.0.0"
-  device_info_plus_web:
-    dependency: transitive
-    description:
-      name: device_info_plus_web
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "3.0.0"
-  device_info_plus_windows:
-    dependency: transitive
-    description:
-      name: device_info_plus_windows
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "4.1.0"
   dynamic_color:
     dependency: "direct main"
     description:
@@ -148,6 +141,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.5.4"
+  easy_localization:
+    dependency: "direct main"
+    description:
+      name: easy_localization
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
+  easy_logger:
+    dependency: transitive
+    description:
+      name: easy_logger
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.2"
   fake_async:
     dependency: transitive
     description:
@@ -175,7 +182,7 @@ packages:
       name: file_picker
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.1.0"
+    version: "5.2.3"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -187,14 +194,14 @@ packages:
       name: flutter_fgbg
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.0"
+    version: "0.2.2"
   flutter_launcher_icons:
     dependency: "direct dev"
     description:
       name: flutter_launcher_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.10.0"
+    version: "0.11.0"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -208,14 +215,14 @@ packages:
       name: flutter_local_notifications
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "10.0.0"
+    version: "12.0.4"
   flutter_local_notifications_linux:
     dependency: transitive
     description:
       name: flutter_local_notifications_linux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "2.0.0"
   flutter_local_notifications_platform_interface:
     dependency: transitive
     description:
@@ -223,6 +230,11 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "6.0.0"
+  flutter_localizations:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -246,14 +258,14 @@ packages:
       name: fluttertoast
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "8.0.9"
+    version: "8.1.1"
   html:
     dependency: "direct main"
     description:
       name: html
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.15.0"
+    version: "0.15.1"
   http:
     dependency: "direct main"
     description:
@@ -267,14 +279,14 @@ packages:
       name: http_parser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.1"
+    version: "4.0.2"
   image:
     dependency: transitive
     description:
       name: image
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.2.0"
+    version: "3.2.2"
   install_plugin_v2:
     dependency: "direct main"
     description:
@@ -282,6 +294,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.0"
+  installed_apps:
+    dependency: "direct main"
+    description:
+      name: installed_apps
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.1"
+  intl:
+    dependency: transitive
+    description:
+      name: intl
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.17.0"
   js:
     dependency: transitive
     description:
@@ -295,14 +321,14 @@ packages:
       name: json_annotation
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.6.0"
+    version: "4.7.0"
   lints:
     dependency: transitive
     description:
       name: lints
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.0.1"
   matcher:
     dependency: transitive
     description:
@@ -316,7 +342,7 @@ packages:
       name: material_color_utilities
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.0"
+    version: "0.1.5"
   meta:
     dependency: transitive
     description:
@@ -324,6 +350,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.3"
   nested:
     dependency: transitive
     description:
@@ -331,6 +364,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.0"
+  package_archive_info:
+    dependency: "direct main"
+    description:
+      name: package_archive_info
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.0"
+  package_info:
+    dependency: transitive
+    description:
+      name: package_info
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.2"
   path:
     dependency: transitive
     description:
@@ -351,7 +398,7 @@ packages:
       name: path_provider_android
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.20"
+    version: "2.0.22"
   path_provider_ios:
     dependency: transitive
     description:
@@ -379,7 +426,7 @@ packages:
       name: path_provider_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.4"
+    version: "2.0.5"
   path_provider_windows:
     dependency: transitive
     description:
@@ -393,42 +440,42 @@ packages:
       name: permission_handler
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "10.0.0"
+    version: "10.2.0"
   permission_handler_android:
     dependency: transitive
     description:
       name: permission_handler_android
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "10.0.0"
+    version: "10.2.0"
   permission_handler_apple:
     dependency: transitive
     description:
       name: permission_handler_apple
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "9.0.4"
+    version: "9.0.7"
   permission_handler_platform_interface:
     dependency: transitive
     description:
       name: permission_handler_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.7.0"
+    version: "3.9.0"
   permission_handler_windows:
     dependency: transitive
     description:
       name: permission_handler_windows
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.0"
+    version: "0.1.2"
   petitparser:
     dependency: transitive
     description:
       name: petitparser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.0.0"
+    version: "5.1.0"
   platform:
     dependency: transitive
     description:
@@ -443,6 +490,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.3"
+  pointycastle:
+    dependency: transitive
+    description:
+      name: pointycastle
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.6.2"
   process:
     dependency: transitive
     description:
@@ -456,7 +510,21 @@ packages:
       name: provider
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.0.3"
+    version: "6.0.4"
+  share_plus:
+    dependency: "direct main"
+    description:
+      name: share_plus
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.3.0"
+  share_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: share_plus_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.2.0"
   shared_preferences:
     dependency: "direct main"
     description:
@@ -470,7 +538,7 @@ packages:
       name: shared_preferences_android
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.13"
+    version: "2.0.14"
   shared_preferences_ios:
     dependency: transitive
     description:
@@ -524,7 +592,21 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.1"
+    version: "1.9.0"
+  sqflite:
+    dependency: "direct main"
+    description:
+      name: sqflite
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.2.1"
+  sqflite_common:
+    dependency: transitive
+    description:
+      name: sqflite_common
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.4.0+2"
   stack_trace:
     dependency: transitive
     description:
@@ -546,6 +628,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.1.1"
+  synchronized:
+    dependency: transitive
+    description:
+      name: synchronized
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0+3"
   term_glyph:
     dependency: transitive
     description:
@@ -559,14 +648,14 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.14"
+    version: "0.4.12"
   timezone:
     dependency: transitive
     description:
       name: timezone
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.8.0"
+    version: "0.9.0"
   typed_data:
     dependency: transitive
     description:
@@ -580,14 +669,14 @@ packages:
       name: url_launcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.1.5"
+    version: "6.1.7"
   url_launcher_android:
     dependency: transitive
     description:
       name: url_launcher_android
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.0.19"
+    version: "6.0.22"
   url_launcher_ios:
     dependency: transitive
     description:
@@ -615,7 +704,7 @@ packages:
       name: url_launcher_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   url_launcher_web:
     dependency: transitive
     description:
@@ -630,13 +719,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.0.1"
+  uuid:
+    dependency: transitive
+    description:
+      name: uuid
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.7"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "2.1.2"
   webview_flutter:
     dependency: "direct main"
     description:
@@ -650,35 +746,28 @@ packages:
       name: webview_flutter_android
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.10.1"
+    version: "2.10.4"
   webview_flutter_platform_interface:
     dependency: transitive
     description:
       name: webview_flutter_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.3"
+    version: "1.9.5"
   webview_flutter_wkwebview:
     dependency: transitive
     description:
       name: webview_flutter_wkwebview
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.9.4"
+    version: "2.9.5"
   win32:
     dependency: transitive
     description:
       name: win32
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.0"
+    version: "3.1.2"
-  workmanager:
-    dependency: "direct main"
-    description:
-      name: workmanager
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.5.0"
   xdg_directories:
     dependency: transitive
     description:
@@ -701,5 +790,5 @@ packages:
     source: hosted
     version: "3.1.1"
 sdks:
-  dart: ">=2.19.0-79.0.dev <3.0.0"
+  dart: ">=2.18.2 <3.0.0"
   flutter: ">=3.3.0"

pubspec.yaml

@@ -17,10 +17,10 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 0.2.3+14 # When changing this, update the tag in main() accordingly
+version: 0.8.2+65 # When changing this, update the tag in main() accordingly
 
 environment:
-  sdk: '>=2.19.0-79.0.dev <3.0.0'
+  sdk: '>=2.18.2 <3.0.0'
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions
@@ -38,27 +38,32 @@ dependencies:
   cupertino_icons: ^1.0.5
   path_provider: ^2.0.11
   flutter_fgbg: ^0.2.0 # Try removing reliance on this
-  flutter_local_notifications: ^10.0.0
+  flutter_local_notifications: ^12.0.0
   provider: ^6.0.3
   http: ^0.13.5
   webview_flutter: ^3.0.4
-  workmanager: ^0.5.0
   dynamic_color: ^1.5.4
-  install_plugin_v2: ^1.0.0 # Try replacing this
   html: ^0.15.0
   shared_preferences: ^2.0.15
   url_launcher: ^6.1.5
   permission_handler: ^10.0.0
   fluttertoast: ^8.0.9
-  device_info_plus: ^4.1.2
+  device_info_plus: ^8.0.0
   file_picker: ^5.1.0
   animations: ^2.0.4
+  install_plugin_v2: ^1.0.0
+  share_plus: ^6.0.1
+  installed_apps: ^1.3.1
+  package_archive_info: ^0.1.0
+  android_alarm_manager_plus: ^2.1.0
+  sqflite: ^2.2.0+3
+  easy_localization: ^3.0.1
 
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  flutter_launcher_icons: ^0.10.0
+  flutter_launcher_icons: ^0.11.0
 
   # The "flutter_lints" package below contains a set of recommended lints to
   # encourage good coding practices. The lint set provided by the package is
@@ -85,10 +90,13 @@ flutter:
   uses-material-design: true
 
   # To add assets to your application, add an assets section, like this:
-  # assets:
+  # - assets:
   #   - images/a_dot_burr.jpeg
   #   - images/a_dot_ham.jpeg
   
+  assets:
+    - assets/translations/
+
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.dev/assets-and-images/#resolution-aware
 

test/widget_test.dart

@@ -13,7 +13,7 @@ import 'package:obtainium/main.dart';
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
+    await tester.pumpWidget(const Obtainium());
 
     // Verify that our counter starts at 0.
     expect(find.text('0'), findsOneWidget);