perf: Do not load patches twice

android/app/src/main/kotlin/app/revanced/manager/flutter/MainActivity.kt

@@ -8,6 +8,7 @@ import app.revanced.manager.flutter.utils.signing.Signer
 import app.revanced.manager.flutter.utils.zip.ZipFile
 import app.revanced.manager.flutter.utils.zip.structures.ZipEntry
 import app.revanced.patcher.PatchBundleLoader
+import app.revanced.patcher.PatchSet
 import app.revanced.patcher.Patcher
 import app.revanced.patcher.PatcherOptions
 import app.revanced.patcher.patch.PatchResult
@@ -31,6 +32,8 @@ class MainActivity : FlutterActivity() {
     private var cancel: Boolean = false
     private var stopResult: MethodChannel.Result? = null
 
+    private lateinit var patches: PatchSet
+
     override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
         super.configureFlutterEngine(flutterEngine)
 
@@ -46,7 +49,6 @@ class MainActivity : FlutterActivity() {
         mainChannel.setMethodCallHandler { call, result ->
             when (call.method) {
                 "runPatcher" -> {
-                    val patchBundleFilePath = call.argument<String>("patchBundleFilePath")
                     val originalFilePath = call.argument<String>("originalFilePath")
                     val inputFilePath = call.argument<String>("inputFilePath")
                     val patchedFilePath = call.argument<String>("patchedFilePath")
@@ -57,7 +59,7 @@ class MainActivity : FlutterActivity() {
                     val keyStoreFilePath = call.argument<String>("keyStoreFilePath")
                     val keystorePassword = call.argument<String>("keystorePassword")
 
-                    if (patchBundleFilePath != null &&
+                    if (
                         originalFilePath != null &&
                         inputFilePath != null &&
                         patchedFilePath != null &&
@@ -71,7 +73,6 @@ class MainActivity : FlutterActivity() {
                         cancel = false
                         runPatcher(
                             result,
-                            patchBundleFilePath,
                             originalFilePath,
                             inputFilePath,
                             patchedFilePath,
@@ -94,17 +95,19 @@ class MainActivity : FlutterActivity() {
                     val patchBundleFilePath = call.argument<String>("patchBundleFilePath")!!
                     val cacheDirPath = call.argument<String>("cacheDirPath")!!
 
+                    try {
+                        patches = PatchBundleLoader.Dex(
+                            File(patchBundleFilePath),
+                            optimizedDexDirectory = File(cacheDirPath)
+                        )
+                    } catch (ex: Exception) {
+                        return@setMethodCallHandler result.notImplemented()
+                    } catch (err: Error) {
+                        return@setMethodCallHandler result.notImplemented()
+                    }
+
                     JSONArray().apply {
-                        try {
+                        patches.forEach {
-                            PatchBundleLoader.Dex(
-                                File(patchBundleFilePath),
-                                optimizedDexDirectory = File(cacheDirPath)
-                            )
-                        } catch (ex: Exception) {
-                            return@setMethodCallHandler result.notImplemented()
-                        } catch (err: Error) {
-                            return@setMethodCallHandler result.notImplemented()
-                        }.forEach {
                             JSONObject().apply {
                                 put("name", it.name)
                                 put("description", it.description)
@@ -136,7 +139,6 @@ class MainActivity : FlutterActivity() {
 
     private fun runPatcher(
         result: MethodChannel.Result,
-        patchBundleFilePath: String,
         originalFilePath: String,
         inputFilePath: String,
         patchedFilePath: String,
@@ -223,10 +225,7 @@ class MainActivity : FlutterActivity() {
 
                 updateProgress(0.1, "Loading patches...", "Loading patches")
 
-                val patches = PatchBundleLoader.Dex(
+                val patches = patches.filter { patch ->
-                    File(patchBundleFilePath),
-                    optimizedDexDirectory = cacheDir
-                ).filter { patch ->
                     val isCompatible = patch.compatiblePackages?.any {
                         it.name == patcher.context.packageMetadata.packageName
                     } ?: false

lib/services/patcher_api.dart

@@ -59,9 +59,7 @@ class PatcherAPI {
   }
 
   List<Patch> getUniversalPatches() {
-    return _patches
+    return _patches.where((patch) => patch.compatiblePackages.isEmpty).toList();
-        .where((patch) => patch.compatiblePackages.isEmpty)
-        .toList();
   }
 
   Future<void> _loadPatches() async {
@@ -85,15 +83,14 @@ class PatcherAPI {
   ) async {
     final List<ApplicationWithIcon> filteredApps = [];
     final bool allAppsIncluded =
-        _universalPatches.isNotEmpty &&
+        _universalPatches.isNotEmpty && showUniversalPatches;
-            showUniversalPatches;
     if (allAppsIncluded) {
       final appList = await DeviceApps.getInstalledApplications(
         includeAppIcons: true,
         onlyAppsWithLaunchIntent: true,
       );
 
-      for(final app in appList) {
+      for (final app in appList) {
         filteredApps.add(app as ApplicationWithIcon);
       }
     }
@@ -154,9 +151,9 @@ class PatcherAPI {
     String apkFilePath,
     List<Patch> selectedPatches,
   ) async {
-    final File? patchBundleFile = await _managerAPI.downloadPatches();
     final File? integrationsFile = await _managerAPI.downloadIntegrations();
-    if (patchBundleFile != null) {
+
+    if (integrationsFile != null) {
       _dataDir.createSync();
       _tmpDir.createSync();
       final Directory workDir = _tmpDir.createTempSync('tmp-');
@@ -170,12 +167,11 @@ class PatcherAPI {
         await patcherChannel.invokeMethod(
           'runPatcher',
           {
-            'patchBundleFilePath': patchBundleFile.path,
             'originalFilePath': originalFilePath,
             'inputFilePath': inputFile.path,
             'patchedFilePath': patchedFile.path,
             'outFilePath': outFile!.path,
-            'integrationsPath': integrationsFile!.path,
+            'integrationsPath': integrationsFile.path,
             'selectedPatches': selectedPatches.map((p) => p.name).toList(),
             'cacheDirPath': cacheDir.path,
             'keyStoreFilePath': _keyStoreFile.path,

lib/ui/views/installer/installer_viewmodel.dart

@@ -95,6 +95,8 @@ class InstallerViewModel extends BaseViewModel {
       isInstalled = false;
       hasErrors = false;
     } else if (value == 1.0) {
+      _managerAPI.patches.clear();
+
       isPatching = false;
       hasErrors = false;
       await _managerAPI.savePatches(