mirror of
https://github.com/ImranR98/Obtainium.git
synced 2025-10-28 04:03:44 +01:00
455 lines
14 KiB
Dart
455 lines
14 KiB
Dart
// Manages state related to the list of Apps tracked by Obtainium,
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// Exposes related functions such as those used to add, remove, download, and install Apps.
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import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:device_info_plus/device_info_plus.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:obtainium/providers/notifications_provider.dart';
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import 'package:provider/provider.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:flutter_fgbg/flutter_fgbg.dart';
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import 'package:obtainium/providers/source_provider.dart';
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import 'package:http/http.dart';
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import 'package:flutter_install_app/flutter_install_app.dart';
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class AppInMemory {
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late App app;
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double? downloadProgress;
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AppInMemory(this.app, this.downloadProgress);
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}
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class ApkFile {
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String appId;
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File file;
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ApkFile(this.appId, this.file);
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}
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class AppsProvider with ChangeNotifier {
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// In memory App state (should always be kept in sync with local storage versions)
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Map<String, AppInMemory> apps = {};
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bool loadingApps = false;
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bool gettingUpdates = false;
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// Variables to keep track of the app foreground status (installs can't run in the background)
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bool isForeground = true;
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late Stream<FGBGType> foregroundStream;
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late StreamSubscription<FGBGType> foregroundSubscription;
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AppsProvider(
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{bool shouldLoadApps = false,
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bool shouldCheckUpdatesAfterLoad = false,
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bool shouldDeleteAPKs = false}) {
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// Subscribe to changes in the app foreground status
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foregroundStream = FGBGEvents.stream.asBroadcastStream();
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foregroundSubscription = foregroundStream.listen((event) async {
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isForeground = event == FGBGType.foreground;
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if (isForeground) await loadApps();
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});
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if (shouldDeleteAPKs) {
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deleteSavedAPKs();
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}
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if (shouldLoadApps) {
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loadApps().then((_) {
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if (shouldCheckUpdatesAfterLoad) {
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checkUpdates();
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}
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});
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}
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}
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Future<ApkFile> downloadApp(String apkUrl, String appId) async {
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StreamedResponse response =
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await Client().send(Request('GET', Uri.parse(apkUrl)));
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File downloadFile =
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File('${(await getExternalStorageDirectory())!.path}/$appId.apk');
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if (downloadFile.existsSync()) {
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downloadFile.deleteSync();
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}
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var length = response.contentLength;
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var received = 0;
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var sink = downloadFile.openWrite();
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await response.stream.map((s) {
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received += s.length;
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apps[appId]!.downloadProgress =
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(length != null ? received / length * 100 : 30);
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notifyListeners();
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return s;
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}).pipe(sink);
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await sink.close();
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apps[appId]!.downloadProgress = null;
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notifyListeners();
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if (response.statusCode != 200) {
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downloadFile.deleteSync();
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throw response.reasonPhrase ?? 'Unknown Error';
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}
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return ApkFile(appId, downloadFile);
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}
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bool areDownloadsRunning() => apps.values
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.where((element) => element.downloadProgress != null)
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.isNotEmpty;
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Future<bool> canInstallSilently(App app) async {
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// TODO: This is unreliable - try to get from OS in the future
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var osInfo = await DeviceInfoPlugin().androidInfo;
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return app.installedVersion != null &&
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osInfo.version.sdkInt! >= 30 &&
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osInfo.version.release!.compareTo('12') >= 0;
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}
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Future<void> askUserToReturnToForeground(BuildContext context,
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{bool waitForFG = false}) async {
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NotificationsProvider notificationsProvider =
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context.read<NotificationsProvider>();
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if (!isForeground) {
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await notificationsProvider.notify(completeInstallationNotification,
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cancelExisting: true);
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if (waitForFG) {
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await FGBGEvents.stream.first == FGBGType.foreground;
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await notificationsProvider.cancel(completeInstallationNotification.id);
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}
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}
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}
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// Unfortunately this 'await' does not actually wait for the APK to finish installing
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// So we only know that the install prompt was shown, but the user could still cancel w/o us knowing
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// If appropriate criteria are met, the update (never a fresh install) happens silently in the background
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// But even then, we don't know if it actually succeeded
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Future<void> installApk(ApkFile file) async {
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await AppInstaller.installApk(file.file.path, actionRequired: false);
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apps[file.appId]!.app.installedVersion =
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apps[file.appId]!.app.latestVersion;
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await saveApps([apps[file.appId]!.app]);
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}
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// Given a list of AppIds, uses stored info about the apps to download APKs and install them
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// If the APKs can be installed silently, they are
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// If no BuildContext is provided, apps that require user interaction are ignored
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// If user input is needed and the App is in the background, a notification is sent to get the user's attention
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// Returns an array of Ids for Apps that were successfully downloaded, regardless of installation result
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Future<List<String>> downloadAndInstallLatestApp(
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List<String> appIds, BuildContext? context) async {
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Map<String, String> appsToInstall = {};
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for (var id in appIds) {
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if (apps[id] == null) {
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throw 'App not found';
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}
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// If the App has more than one APK, the user should pick one (if context provided)
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String? apkUrl = apps[id]!.app.apkUrls[apps[id]!.app.preferredApkIndex];
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if (apps[id]!.app.apkUrls.length > 1 && context != null) {
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apkUrl = await showDialog(
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context: context,
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builder: (BuildContext ctx) {
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return APKPicker(app: apps[id]!.app, initVal: apkUrl);
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});
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}
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// If the picked APK comes from an origin different from the source, get user confirmation (if context provided)
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if (apkUrl != null &&
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Uri.parse(apkUrl).origin != Uri.parse(apps[id]!.app.url).origin &&
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context != null) {
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if (await showDialog(
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context: context,
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builder: (BuildContext ctx) {
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return APKOriginWarningDialog(
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sourceUrl: apps[id]!.app.url, apkUrl: apkUrl!);
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}) !=
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true) {
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apkUrl = null;
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}
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}
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if (apkUrl != null) {
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int urlInd = apps[id]!.app.apkUrls.indexOf(apkUrl);
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if (urlInd != apps[id]!.app.preferredApkIndex) {
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apps[id]!.app.preferredApkIndex = urlInd;
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await saveApps([apps[id]!.app]);
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}
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if (context != null ||
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(await canInstallSilently(apps[id]!.app) &&
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apps[id]!.app.apkUrls.length == 1)) {
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appsToInstall.putIfAbsent(id, () => apkUrl!);
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}
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}
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}
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List<ApkFile> downloadedFiles = await Future.wait(appsToInstall.entries
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.map((entry) => downloadApp(entry.value, entry.key)));
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List<ApkFile> silentUpdates = [];
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List<ApkFile> regularInstalls = [];
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for (var f in downloadedFiles) {
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bool willBeSilent = await canInstallSilently(apps[f.appId]!.app);
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if (willBeSilent) {
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silentUpdates.add(f);
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} else {
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regularInstalls.add(f);
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}
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}
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for (var u in silentUpdates) {
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await installApk(u);
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}
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if (context != null) {
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if (regularInstalls.isNotEmpty) {
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// ignore: use_build_context_synchronously
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await askUserToReturnToForeground(context);
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}
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for (var i in regularInstalls) {
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await installApk(i);
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}
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}
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return downloadedFiles.map((e) => e.appId).toList();
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}
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Future<Directory> getAppsDir() async {
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Directory appsDir = Directory(
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'${(await getExternalStorageDirectory())?.path as String}/app_data');
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if (!appsDir.existsSync()) {
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appsDir.createSync();
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}
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return appsDir;
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}
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Future<void> deleteSavedAPKs() async {
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(await getExternalStorageDirectory())
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?.listSync()
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.where((element) => element.path.endsWith('.apk'))
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.forEach((element) {
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element.deleteSync();
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});
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}
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Future<void> loadApps() async {
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loadingApps = true;
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notifyListeners();
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List<FileSystemEntity> appFiles = (await getAppsDir())
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.listSync()
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.where((item) => item.path.toLowerCase().endsWith('.json'))
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.toList();
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apps.clear();
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for (int i = 0; i < appFiles.length; i++) {
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App app =
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App.fromJson(jsonDecode(File(appFiles[i].path).readAsStringSync()));
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apps.putIfAbsent(app.id, () => AppInMemory(app, null));
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}
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loadingApps = false;
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notifyListeners();
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}
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Future<void> saveApps(List<App> apps) async {
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for (var app in apps) {
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File('${(await getAppsDir()).path}/${app.id}.json')
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.writeAsStringSync(jsonEncode(app.toJson()));
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this.apps.update(
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app.id, (value) => AppInMemory(app, value.downloadProgress),
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ifAbsent: () => AppInMemory(app, null));
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}
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notifyListeners();
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}
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Future<void> removeApps(List<String> appIds) async {
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for (var appId in appIds) {
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File file = File('${(await getAppsDir()).path}/$appId.json');
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if (file.existsSync()) {
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file.deleteSync();
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}
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if (apps.containsKey(appId)) {
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apps.remove(appId);
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}
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}
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if (appIds.isNotEmpty) {
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notifyListeners();
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}
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}
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bool checkAppObjectForUpdate(App app) {
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if (!apps.containsKey(app.id)) {
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throw 'App not found';
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}
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return app.latestVersion != apps[app.id]?.app.installedVersion;
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}
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Future<App?> getUpdate(String appId) async {
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App? currentApp = apps[appId]!.app;
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SourceProvider sourceProvider = SourceProvider();
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App newApp = await sourceProvider.getApp(
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sourceProvider.getSource(currentApp.url),
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currentApp.url,
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currentApp.additionalData);
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if (newApp.latestVersion != currentApp.latestVersion) {
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newApp.installedVersion = currentApp.installedVersion;
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if (currentApp.preferredApkIndex < newApp.apkUrls.length) {
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newApp.preferredApkIndex = currentApp.preferredApkIndex;
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}
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await saveApps([newApp]);
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return newApp;
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}
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return null;
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}
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Future<List<App>> checkUpdates() async {
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List<App> updates = [];
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if (!gettingUpdates) {
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gettingUpdates = true;
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List<String> appIds = apps.keys.toList();
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for (int i = 0; i < appIds.length; i++) {
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App? newApp = await getUpdate(appIds[i]);
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if (newApp != null) {
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updates.add(newApp);
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}
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}
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gettingUpdates = false;
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}
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return updates;
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}
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List<String> getExistingUpdates(
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{bool installedOnly = false, bool nonInstalledOnly = false}) {
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List<String> updateAppIds = [];
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List<String> appIds = apps.keys.toList();
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for (int i = 0; i < appIds.length; i++) {
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App? app = apps[appIds[i]]!.app;
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if (app.installedVersion != app.latestVersion &&
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(!installedOnly || !nonInstalledOnly)) {
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if ((app.installedVersion == null &&
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(nonInstalledOnly || !installedOnly) ||
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(app.installedVersion != null &&
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(installedOnly || !nonInstalledOnly)))) {
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updateAppIds.add(app.id);
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}
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}
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}
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return updateAppIds;
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}
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Future<String> exportApps() async {
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Directory? exportDir = Directory('/storage/emulated/0/Download');
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String path = 'Downloads';
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if (!exportDir.existsSync()) {
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exportDir = await getExternalStorageDirectory();
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path = exportDir!.path;
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}
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File export = File(
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'${exportDir.path}/obtainium-export-${DateTime.now().millisecondsSinceEpoch}.json');
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export.writeAsStringSync(
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jsonEncode(apps.values.map((e) => e.app.toJson()).toList()));
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return path;
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}
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Future<int> importApps(String appsJSON) async {
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// File picker does not work in android 13, so the user must paste the JSON directly into Obtainium to import Apps
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List<App> importedApps = (jsonDecode(appsJSON) as List<dynamic>)
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.map((e) => App.fromJson(e))
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.toList();
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for (App a in importedApps) {
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a.installedVersion =
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apps.containsKey(a.id) ? apps[a]?.app.installedVersion : null;
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await saveApps([a]);
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}
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notifyListeners();
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return importedApps.length;
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}
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@override
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void dispose() {
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foregroundSubscription.cancel();
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super.dispose();
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}
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}
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class APKPicker extends StatefulWidget {
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const APKPicker({super.key, required this.app, this.initVal});
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final App app;
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final String? initVal;
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@override
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State<APKPicker> createState() => _APKPickerState();
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}
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class _APKPickerState extends State<APKPicker> {
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String? apkUrl;
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@override
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Widget build(BuildContext context) {
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apkUrl ??= widget.initVal;
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return AlertDialog(
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scrollable: true,
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title: const Text('Pick an APK'),
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content: Column(children: [
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Text('${widget.app.name} has more than one package:'),
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const SizedBox(height: 16),
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...widget.app.apkUrls.map((u) => RadioListTile<String>(
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title: Text(Uri.parse(u).pathSegments.last),
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value: u,
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groupValue: apkUrl,
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onChanged: (String? val) {
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setState(() {
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apkUrl = val;
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});
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}))
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]),
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actions: [
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TextButton(
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onPressed: () {
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Navigator.of(context).pop(null);
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},
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child: const Text('Cancel')),
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TextButton(
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onPressed: () {
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HapticFeedback.selectionClick();
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Navigator.of(context).pop(apkUrl);
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},
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child: const Text('Continue'))
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],
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);
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}
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}
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class APKOriginWarningDialog extends StatefulWidget {
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const APKOriginWarningDialog(
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{super.key, required this.sourceUrl, required this.apkUrl});
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final String sourceUrl;
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final String apkUrl;
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@override
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State<APKOriginWarningDialog> createState() => _APKOriginWarningDialogState();
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}
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class _APKOriginWarningDialogState extends State<APKOriginWarningDialog> {
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@override
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Widget build(BuildContext context) {
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return AlertDialog(
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scrollable: true,
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title: const Text('Warning'),
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content: Text(
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'The App source is \'${Uri.parse(widget.sourceUrl).host}\' but the release package comes from \'${Uri.parse(widget.apkUrl).host}\'. Continue?'),
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actions: [
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TextButton(
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onPressed: () {
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Navigator.of(context).pop(null);
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},
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child: const Text('Cancel')),
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TextButton(
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onPressed: () {
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HapticFeedback.selectionClick();
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Navigator.of(context).pop(true);
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},
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child: const Text('Continue'))
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],
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);
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}
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}
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