feat: use github to get latest patches version if custom sources are used.

lib/services/github_api.dart

@@ -130,4 +130,18 @@ class GithubAPI {
     }
     return patches;
   }
+
+  Future<String> getLastestReleaseVersion(String repoName) async {
+    try {
+      Map<String, dynamic>? release = await _getLatestRelease(repoName);
+      if (release != null) {
+        return release['tag_name'];
+      } else {
+        return 'Unknown';
+      }
+    } on Exception catch (e, s) {
+      await Sentry.captureException(e, stackTrace: s);
+      return '';
+    }
+  }
 }

lib/ui/views/patches_selector/patches_selector_viewmodel.dart

@@ -3,6 +3,7 @@ import 'package:flutter_i18n/widgets/I18nText.dart';
 import 'package:revanced_manager/app/app.locator.dart';
 import 'package:revanced_manager/models/patch.dart';
 import 'package:revanced_manager/models/patched_application.dart';
+import 'package:revanced_manager/services/github_api.dart';
 import 'package:revanced_manager/services/manager_api.dart';
 import 'package:revanced_manager/services/patcher_api.dart';
 import 'package:revanced_manager/services/toast.dart';
@@ -14,10 +15,14 @@ import 'package:flutter/material.dart';
 class PatchesSelectorViewModel extends BaseViewModel {
   final PatcherAPI _patcherAPI = locator<PatcherAPI>();
   final ManagerAPI _managerAPI = locator<ManagerAPI>();
+  final GithubAPI _githubAPI = locator<GithubAPI>();
   final List<Patch> patches = [];
   final List<Patch> selectedPatches =
       locator<PatcherViewModel>().selectedPatches;
   String? patchesVersion = '';
+  bool isDefaultPatchesRepo() {
+    return _managerAPI.getPatchesRepo() == 'revanced/revanced-patches';
+  }
 
   Future<void> initialize() async {
     getPatchesVersion();
@@ -104,9 +109,15 @@ class PatchesSelectorViewModel extends BaseViewModel {
   }
 
   Future<String?> getPatchesVersion() async {
-    patchesVersion = await _managerAPI.getLatestPatchesVersion();
-    // print('Patches version: $patchesVersion');
-    return patchesVersion ?? '0.0.0';
+    if (isDefaultPatchesRepo()) {
+      patchesVersion = await _managerAPI.getLatestPatchesVersion();
+      // print('Patches version: $patchesVersion');
+      return patchesVersion ?? '0.0.0';
+    } else {
+      // fetch from github
+      patchesVersion = await _githubAPI
+          .getLastestReleaseVersion(_managerAPI.getPatchesRepo());
+    }
   }
 
   List<Patch> getQueriedPatches(String query) {