revanced-manager/lib/ui/views/installer/installer_viewmodel.dart

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import 'package:device_apps/device_apps.dart';
import 'package:flutter_background/flutter_background.dart';
import 'package:revanced_manager/app/app.locator.dart';
import 'package:revanced_manager/models/patch.dart';
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import 'package:revanced_manager/models/patched_application.dart';
import 'package:revanced_manager/services/patcher_api.dart';
import 'package:revanced_manager/ui/views/app_selector/app_selector_viewmodel.dart';
import 'package:revanced_manager/ui/views/patcher/patcher_viewmodel.dart';
import 'package:revanced_manager/ui/views/patches_selector/patches_selector_viewmodel.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:stacked/stacked.dart';
class InstallerViewModel extends BaseViewModel {
double? progress = 0.2;
String logs = '';
bool isPatching = false;
bool isInstalled = false;
bool showButtons = false;
Future<void> initialize() async {
await FlutterBackground.initialize(
androidConfig: const FlutterBackgroundAndroidConfig(
notificationTitle: 'Patching',
notificationText: 'ReVanced Manager is patching',
notificationImportance: AndroidNotificationImportance.Default,
notificationIcon: AndroidResource(
name: 'ic_notification',
defType: 'drawable',
),
),
);
await FlutterBackground.enableBackgroundExecution();
await locator<PatcherAPI>().handlePlatformChannelMethods();
runPatcher();
}
void addLog(String message) {
if (message.isNotEmpty && !message.startsWith('Merging L')) {
if (logs.isNotEmpty) {
logs += '\n';
}
logs += message;
notifyListeners();
}
}
void updateProgress(double value) {
progress = value;
isInstalled = false;
isPatching = progress == 1.0 ? false : true;
showButtons = progress == 1.0 ? true : false;
if (progress == 0.0) {
logs = '';
}
notifyListeners();
}
Future<void> runPatcher() async {
updateProgress(0.0);
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PatchedApplication? selectedApp =
locator<AppSelectorViewModel>().selectedApp;
if (selectedApp != null) {
String apkFilePath = selectedApp.apkFilePath;
List<Patch> selectedPatches =
locator<PatchesSelectorViewModel>().selectedPatches;
if (selectedPatches.isNotEmpty) {
addLog('Initializing installer');
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if (selectedApp.isRooted && !selectedApp.isFromStorage) {
addLog('Checking if an old patched version exists');
bool oldExists =
await locator<PatcherAPI>().checkOldPatch(selectedApp);
if (oldExists) {
addLog('Deleting old patched version');
await locator<PatcherAPI>().deleteOldPatch(selectedApp);
}
}
addLog('Creating working directory');
bool? isSuccess = await locator<PatcherAPI>().initPatcher();
if (isSuccess != null && isSuccess) {
updateProgress(0.1);
addLog('Copying original apk');
isSuccess = await locator<PatcherAPI>().copyInputFile(apkFilePath);
if (isSuccess != null && isSuccess) {
updateProgress(0.2);
addLog('Creating patcher');
bool resourcePatching = false;
if (selectedApp.packageName == 'com.google.android.youtube' ||
selectedApp.packageName ==
'com.google.android.apps.youtube.music') {
resourcePatching = true;
}
isSuccess = await locator<PatcherAPI>().createPatcher(
resourcePatching,
);
if (isSuccess != null && isSuccess) {
if (selectedApp.packageName == 'com.google.android.youtube') {
updateProgress(0.3);
addLog('Merging integrations');
isSuccess = await locator<PatcherAPI>().mergeIntegrations();
}
if (isSuccess != null && isSuccess) {
updateProgress(0.5);
isSuccess =
await locator<PatcherAPI>().applyPatches(selectedPatches);
if (isSuccess != null && isSuccess) {
updateProgress(0.7);
addLog('Repacking patched apk');
isSuccess = await locator<PatcherAPI>().repackPatchedFile();
if (isSuccess != null && isSuccess) {
updateProgress(0.9);
addLog('Signing patched apk');
isSuccess = await locator<PatcherAPI>().signPatchedFile();
if (isSuccess != null && isSuccess) {
showButtons = true;
updateProgress(1.0);
addLog('Finished');
}
}
}
}
}
}
}
if (isSuccess == null || !isSuccess) {
addLog('An error occurred! Aborting');
}
} else {
addLog('No patches selected! Aborting');
}
} else {
addLog('No app selected! Aborting');
}
await FlutterBackground.disableBackgroundExecution();
isPatching = false;
}
void installResult() async {
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PatchedApplication? selectedApp =
locator<AppSelectorViewModel>().selectedApp;
if (selectedApp != null) {
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addLog(selectedApp.isRooted
? 'Installing patched file using root method'
: 'Installing patched file using nonroot method');
isInstalled = await locator<PatcherAPI>().installPatchedFile(selectedApp);
if (isInstalled) {
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addLog('Done');
await saveApp(selectedApp);
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} else {
addLog('An error occurred! Aborting');
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}
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}
}
void shareResult() {
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PatchedApplication? selectedApp =
locator<AppSelectorViewModel>().selectedApp;
if (selectedApp != null) {
locator<PatcherAPI>().sharePatchedFile(
selectedApp.name,
selectedApp.version,
);
}
}
Future<void> cleanWorkplace() async {
locator<PatcherAPI>().cleanPatcher();
locator<AppSelectorViewModel>().selectedApp = null;
locator<PatchesSelectorViewModel>().selectedPatches.clear();
locator<PatcherViewModel>().notifyListeners();
}
void openApp() {
PatchedApplication? selectedApp =
locator<AppSelectorViewModel>().selectedApp;
if (selectedApp != null) {
DeviceApps.openApp(selectedApp.packageName);
}
}
Future<void> saveApp(PatchedApplication selectedApp) async {
SharedPreferences prefs = await SharedPreferences.getInstance();
List<String> patchedApps = prefs.getStringList('patchedApps') ?? [];
String app = selectedApp.toJson().toString();
if (!patchedApps.contains(app)) {
patchedApps.add(app);
prefs.setStringList('patchedApps', patchedApps);
}
}
}