fix: patcher cleaning and improve patches load

lib/services/patcher_api.dart

@@ -28,7 +28,9 @@ class PatcherAPI {
   File? _outFile;
 
   Future<void> initPatcher() async {
-    _tmpDir = await getTemporaryDirectory();
+    Directory appCache = await getTemporaryDirectory();
+    _tmpDir = Directory('$appCache/patcher');
+    _tmpDir!.createSync();
     _workDir = _tmpDir!.createTempSync('tmp-');
     _inputFile = File('${_workDir!.path}/base.apk');
     _patchedFile = File('${_workDir!.path}/patched.apk');
@@ -37,13 +39,14 @@ class PatcherAPI {
     _cacheDir!.createSync();
   }
 
-  Future<void> loadPatches() async {
-    if (_cacheDir == null) {
+  Future<bool> loadPatches() async {
+    if (_tmpDir == null) {
       await initPatcher();
     }
     if (_jarPatchBundleFile == null) {
       _jarPatchBundleFile = await _managerAPI.downloadPatches('.jar');
       if (_jarPatchBundleFile != null) {
+        try {
           await patcherChannel.invokeMethod<bool>(
             'loadPatches',
             {
@@ -51,13 +54,18 @@ class PatcherAPI {
               'cacheDirPath': _cacheDir!.path,
             },
           );
+        } on Exception {
+          return false;
         }
       }
     }
+    return _jarPatchBundleFile != null;
+  }
 
   Future<List<ApplicationWithIcon>> getFilteredInstalledApps() async {
     List<ApplicationWithIcon> filteredPackages = [];
-    if (_jarPatchBundleFile != null) {
+    bool isLoaded = await loadPatches();
+    if (isLoaded) {
       try {
         List<String>? patchesPackages = await patcherChannel
             .invokeListMethod<String>('getCompatiblePackages');
@@ -85,7 +93,9 @@ class PatcherAPI {
     PatchedApplication? selectedApp,
   ) async {
     List<Patch> filteredPatches = [];
-    if (_jarPatchBundleFile != null && selectedApp != null) {
+    if (selectedApp != null) {
+      bool isLoaded = await loadPatches();
+      if (isLoaded) {
         try {
           var patches =
               await patcherChannel.invokeListMethod<Map<dynamic, dynamic>>(
@@ -120,6 +130,7 @@ class PatcherAPI {
           return List.empty();
         }
       }
+    }
     return filteredPatches;
   }
 
@@ -127,7 +138,9 @@ class PatcherAPI {
     PatchedApplication? selectedApp,
   ) async {
     List<Patch> appliedPatches = [];
-    if (_jarPatchBundleFile != null && selectedApp != null) {
+    if (selectedApp != null) {
+      bool isLoaded = await loadPatches();
+      if (isLoaded) {
         try {
           var patches =
               await patcherChannel.invokeListMethod<Map<dynamic, dynamic>>(
@@ -161,6 +174,7 @@ class PatcherAPI {
           return List.empty();
         }
       }
+    }
     return appliedPatches;
   }
 
@@ -215,17 +229,16 @@ class PatcherAPI {
   }
 
   void cleanPatcher() {
-    if (_workDir != null) {
-      _workDir!.deleteSync(recursive: true);
+    if (_tmpDir != null) {
+      _tmpDir!.deleteSync(recursive: true);
+      _tmpDir = null;
     }
   }
 
   bool sharePatchedFile(String appName, String version) {
     if (_outFile != null) {
-      String path = _tmpDir!.path;
       String prefix = appName.toLowerCase().replaceAll(' ', '-');
-      String sharePath = '$path/$prefix-revanced_v$version.apk';
-      File share = _outFile!.copySync(sharePath);
+      File share = _outFile!.renameSync('$prefix-revanced_v$version.apk');
       ShareExtend.share(share.path, 'file');
       return true;
     } else {

lib/ui/views/installer/installer_view.dart

@@ -95,7 +95,7 @@ class InstallerView extends StatelessWidget {
         ),
         onWillPop: () async {
           if (!model.isPatching) {
-            model.cleanWorkplace();
+            model.cleanPatcher();
             Navigator.of(context).pop();
           }
           return false;

lib/ui/views/installer/installer_viewmodel.dart

@@ -162,7 +162,7 @@ class InstallerViewModel extends BaseViewModel {
     }
   }
 
-  Future<void> cleanWorkplace() async {
+  Future<void> cleanPatcher() async {
     _patcherAPI.cleanPatcher();
     locator<PatcherViewModel>().selectedApp = null;
     locator<PatcherViewModel>().selectedPatches.clear();