feat: Save last patched app (#1414)

Co-authored-by: aAbed <39409020+TheAabedKhan@users.noreply.github.com>
Co-authored-by: Ushie <ushiekane@gmail.com>
Co-authored-by: oSumAtrIX <johan.melkonyan1@web.de>
Co-authored-by: Mr. X <79870712+n30mrx@users.noreply.github.com>
Co-authored-by: festry0 <153519925+festry0@users.noreply.github.com>

assets/i18n/strings.i18n.json

@@ -27,10 +27,12 @@
     "refreshSuccess": "Refreshed successfully",
     "widgetTitle": "Dashboard",
     "updatesSubtitle": "Updates",
-    "patchedSubtitle": "Patched apps",
+    "lastPatchedAppSubtitle": "Last patched app",
+    "patchedSubtitle": "Installed apps",
     "changeLaterSubtitle": "You can change this in the settings at a later time.",
     "noUpdates": "No updates available",
     "WIP": "Work in progress...",
+    "noSavedAppFound": "No app found",
     "noInstallations": "No patched apps installed",
     "installUpdate": "Continue to install the update?",
     "updateSheetTitle": "Update ReVanced Manager",
@@ -205,6 +207,8 @@
     "showUpdateDialogHint": "Show a dialog when a new update is available",
     "universalPatchesLabel": "Show universal patches",
     "universalPatchesHint": "Display all apps and universal patches (may slow down the app list)",
+    "lastPatchedAppLabel": "Save patched app",
+    "lastPatchedAppHint": "Save the last patch to install or export later",
     "versionCompatibilityCheckLabel": "Version compatibility check",
     "versionCompatibilityCheckHint": "Prevent selecting patches that are not compatible with the selected app version",
     "requireSuggestedAppVersionLabel": "Require suggested app version",
@@ -256,18 +260,25 @@
   "appInfoView": {
     "widgetTitle": "App info",
     "openButton": "Open",
+    "installButton": "Install",
     "uninstallButton": "Uninstall",
     "unmountButton": "Unmount",
+    "exportButton": "Export",
+    "deleteButton": "Delete",
     "rootDialogTitle": "Error",
+    "lastPatchedAppDescription": "This is a backup of the app that was last patched.",
     "unmountDialogText": "Are you sure you want to unmount this app?",
     "uninstallDialogText": "Are you sure you want to uninstall this app?",
     "rootDialogText": "App was installed with superuser permissions, but currently ReVanced Manager has no permissions.\nPlease grant superuser permissions first.",
+    "removeAppDialogTitle": "Delete app?",
+    "removeAppDialogText": "Are you sure you want to delete this backup?",
     "packageNameLabel": "Package name",
     "installTypeLabel": "Installation type",
     "mountTypeLabel": "Mount",
     "regularTypeLabel": "Regular",
     "patchedDateLabel": "Patched date",
     "appliedPatchesLabel": "Applied patches",
+    "sizeLabel": "File size",
     "patchedDateHint": "${date} at ${time}",
     "appliedPatchesHint": "${quantity} applied patches",
     "updateNotImplemented": "This feature has not been implemented yet"

lib/models/patched_application.dart

@@ -16,6 +16,8 @@ class PatchedApplication {
     this.isRooted = false,
     this.isFromStorage = false,
     this.appliedPatches = const [],
+    this.patchedFilePath = '',
+    this.fileSize = 0,
   });
 
   factory PatchedApplication.fromJson(Map<String, dynamic> json) =>
@@ -33,6 +35,8 @@ class PatchedApplication {
   bool isRooted;
   bool isFromStorage;
   List<String> appliedPatches;
+  String patchedFilePath;
+  int fileSize;
 
   Map<String, dynamic> toJson() => _$PatchedApplicationToJson(this);
 

lib/services/manager_api.dart

@@ -302,6 +302,14 @@ class ManagerAPI {
     await _prefs.setBool('requireSuggestedAppVersionEnabled', value);
   }
 
+  bool isLastPatchedAppEnabled() {
+    return _prefs.getBool('lastPatchedAppEnabled') ?? true;
+  }
+
+  Future<void> enableLastPatchedAppStatus(bool value) async {
+    await _prefs.setBool('lastPatchedAppEnabled', value);
+  }
+
   Future<void> setKeystorePassword(String password) async {
     await _prefs.setString('keystorePassword', password);
   }
@@ -334,6 +342,34 @@ class ManagerAPI {
     }
   }
 
+  PatchedApplication? getLastPatchedApp() {
+    final String? app = _prefs.getString('lastPatchedApp');
+    return app != null ? PatchedApplication.fromJson(jsonDecode(app)) : null;
+  }
+
+  Future<void> deleteLastPatchedApp() async {
+    final PatchedApplication? app = getLastPatchedApp();
+    if (app != null) {
+      final File file = File(app.patchedFilePath);
+      await file.delete();
+      await _prefs.remove('lastPatchedApp');
+    }
+  }
+
+  Future<void> setLastPatchedApp(
+    PatchedApplication app,
+    File outFile,
+  ) async {
+    deleteLastPatchedApp();
+    final Directory appCache = await getApplicationSupportDirectory();
+    app.patchedFilePath = outFile.copySync('${appCache.path}/lastPatchedApp.apk').path;
+    app.fileSize = outFile.lengthSync();
+    await _prefs.setString(
+      'lastPatchedApp',
+      json.encode(app.toJson()),
+    );
+  }
+
   List<PatchedApplication> getPatchedApps() {
     final List<String> apps = _prefs.getStringList('patchedApps') ?? [];
     return apps.map((a) => PatchedApplication.fromJson(jsonDecode(a))).toList();
@@ -692,6 +728,16 @@ class ManagerAPI {
     patchedApps.addAll(mountedApps);
 
     await setPatchedApps(patchedApps);
+
+    // Delete the saved app if the file is not found.
+    final PatchedApplication? lastPatchedApp = getLastPatchedApp();
+    if (lastPatchedApp != null) {
+      final File file = File(lastPatchedApp.patchedFilePath);
+      if (!file.existsSync()) {
+        deleteLastPatchedApp();
+        _prefs.remove('lastPatchedApp');
+      }
+    }
   }
 
   Future<bool> isAppUninstalled(PatchedApplication app) async {
@@ -786,4 +832,82 @@ class ManagerAPI {
       selectedPatchesFile.deleteSync();
     }
   }
+
+  Future<bool> installTypeDialog(BuildContext context) async {
+    final ValueNotifier<int> installType = ValueNotifier(0);
+    if (isRooted) {
+      await showDialog(
+        context: context,
+        barrierDismissible: false,
+        builder: (context) => AlertDialog(
+          title: Text(t.installerView.installType),
+          backgroundColor: Theme.of(context).colorScheme.secondaryContainer,
+          icon: const Icon(Icons.file_download_outlined),
+          contentPadding: const EdgeInsets.symmetric(vertical: 16),
+          content: SingleChildScrollView(
+            child: ValueListenableBuilder(
+              valueListenable: installType,
+              builder: (context, value, child) {
+                return Column(
+                  mainAxisSize: MainAxisSize.min,
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Padding(
+                      padding: const EdgeInsets.symmetric(
+                        horizontal: 20,
+                        vertical: 10,
+                      ),
+                      child: Text(
+                        t.installerView.installTypeDescription,
+                        style: TextStyle(
+                          fontSize: 16,
+                          fontWeight: FontWeight.w500,
+                          color: Theme.of(context).colorScheme.secondary,
+                        ),
+                      ),
+                    ),
+                    RadioListTile(
+                      title: Text(t.installerView.installNonRootType),
+                      contentPadding:
+                      const EdgeInsets.symmetric(horizontal: 16),
+                      value: 0,
+                      groupValue: value,
+                      onChanged: (selected) {
+                        installType.value = selected!;
+                      },
+                    ),
+                    RadioListTile(
+                      title: Text(t.installerView.installRootType),
+                      contentPadding:
+                      const EdgeInsets.symmetric(horizontal: 16),
+                      value: 1,
+                      groupValue: value,
+                      onChanged: (selected) {
+                        installType.value = selected!;
+                      },
+                    ),
+                  ],
+                );
+              },
+            ),
+          ),
+          actions: [
+            OutlinedButton(
+              child: Text(t.cancelButton),
+              onPressed: () {
+                Navigator.of(context).pop();
+              },
+            ),
+            FilledButton(
+              child: Text(t.installerView.installButton),
+              onPressed: () {
+                Navigator.of(context).pop();
+              },
+            ),
+          ],
+        ),
+      );
+    }
+    return false;
+  }
 }

lib/services/patcher_api.dart

@@ -217,7 +217,7 @@ class PatcherAPI {
     BuildContext context,
     PatchedApplication patchedApp,
   ) async {
-    if (outFile != null) {
+    if (patchedApp.patchedFilePath != '') {
       _managerAPI.ctx = context;
       try {
         if (patchedApp.isRooted) {
@@ -232,7 +232,7 @@ class PatcherAPI {
             return await _rootAPI.install(
               patchedApp.packageName,
               patchedApp.apkFilePath,
-              outFile!.path,
+              patchedApp.patchedFilePath,
             )
                 ? 0
                 : 1;
@@ -246,7 +246,7 @@ class PatcherAPI {
           if (context.mounted) {
             return await installApk(
               context,
-              outFile!.path,
+              patchedApp.patchedFilePath,
             );
           }
         }
@@ -368,13 +368,13 @@ class PatcherAPI {
     return cleanInstall ? 10 : 1;
   }
 
-  void exportPatchedFile(String appName, String version) {
+  void exportPatchedFile(PatchedApplication app) {
     try {
       if (outFile != null) {
-        final String newName = _getFileName(appName, version);
+        final String newName = _getFileName(app.name, app.version);
         FlutterFileDialog.saveFile(
           params: SaveFileDialogParams(
-            sourceFilePath: outFile!.path,
+            sourceFilePath: app.patchedFilePath,
             fileName: newName,
             mimeTypesFilter: ['application/vnd.android.package-archive'],
           ),
@@ -387,14 +387,14 @@ class PatcherAPI {
     }
   }
 
-  void sharePatchedFile(String appName, String version) {
+  void sharePatchedFile(PatchedApplication app) {
     try {
       if (outFile != null) {
-        final String newName = _getFileName(appName, version);
-        final int lastSeparator = outFile!.path.lastIndexOf('/');
+        final String newName = _getFileName(app.name, app.version);
+        final int lastSeparator = app.patchedFilePath.lastIndexOf('/');
         final String newPath =
-            outFile!.path.substring(0, lastSeparator + 1) + newName;
-        final File shareFile = outFile!.copySync(newPath);
+            app.patchedFilePath.substring(0, lastSeparator + 1) + newName;
+        final File shareFile = File(app.patchedFilePath).copySync(newPath);
         Share.shareXFiles([XFile(shareFile.path)]);
       }
     } on Exception catch (e) {

lib/ui/views/home/home_view.dart

@@ -5,6 +5,7 @@ import 'package:revanced_manager/gen/strings.g.dart';
 import 'package:revanced_manager/ui/views/home/home_viewmodel.dart';
 import 'package:revanced_manager/ui/widgets/homeView/installed_apps_card.dart';
 import 'package:revanced_manager/ui/widgets/homeView/latest_commit_card.dart';
+import 'package:revanced_manager/ui/widgets/homeView/last_patched_app_card.dart';
 import 'package:revanced_manager/ui/widgets/shared/custom_sliver_app_bar.dart';
 import 'package:stacked/stacked.dart';
 
@@ -44,6 +45,22 @@ class HomeView extends StatelessWidget {
                       const SizedBox(height: 10),
                       LatestCommitCard(model: model, parentContext: context),
                       const SizedBox(height: 23),
+                      Visibility(
+                          visible: model.isLastPatchedAppEnabled(),
+                          child: Column(
+                            crossAxisAlignment: CrossAxisAlignment.start,
+                            children: [
+                              Text(
+                                t.homeView.lastPatchedAppSubtitle,
+                                style: Theme.of(context).textTheme.titleLarge,
+                              ),
+                              const SizedBox(height: 10),
+                              LastPatchedAppCard(),
+                              const SizedBox(height: 10),
+
+                            ],
+                          ),
+                      ),
                       Text(
                         t.homeView.patchedSubtitle,
                         style: Theme.of(context).textTheme.titleLarge,

lib/ui/views/home/home_viewmodel.dart

@@ -35,6 +35,7 @@ class HomeViewModel extends BaseViewModel {
   final Toast _toast = locator<Toast>();
   final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
   bool showUpdatableApps = false;
+  PatchedApplication? lastPatchedApp;
   bool releaseBuild = false;
   List<PatchedApplication> patchedInstalledApps = [];
   String _currentManagerVersion = '';
@@ -102,10 +103,10 @@ class HomeViewModel extends BaseViewModel {
     }
   }
 
-  void navigateToAppInfo(PatchedApplication app) {
+  void navigateToAppInfo(PatchedApplication app, bool isLastPatchedApp) {
     _navigationService.navigateTo(
       Routes.appInfoView,
-      arguments: AppInfoViewArguments(app: app),
+      arguments: AppInfoViewArguments(app: app, isLastPatchedApp: isLastPatchedApp),
     );
   }
 
@@ -123,10 +124,15 @@ class HomeViewModel extends BaseViewModel {
   }
 
   void getPatchedApps() {
+    lastPatchedApp = _managerAPI.getLastPatchedApp();
     patchedInstalledApps = _managerAPI.getPatchedApps().toList();
     notifyListeners();
   }
 
+  bool isLastPatchedAppEnabled() {
+    return _managerAPI.isLastPatchedAppEnabled();
+  }
+
   Future<bool> hasManagerUpdates() async {
     if (!_managerAPI.releaseBuild) {
       return false;