feat: show error dialog on piped API 500 error

lib/components/shared/dialogs/piped_down_dialog.dart

@@ -0,0 +1,46 @@
+import 'package:flutter/material.dart';
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:spotube/collections/spotube_icons.dart';
+import 'package:spotube/extensions/context.dart';
+import 'package:spotube/provider/user_preferences_provider.dart';
+
+class PipedDownDialog extends HookConsumerWidget {
+  const PipedDownDialog({Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context, ref) {
+    final pipedInstance =
+        ref.watch(userPreferencesProvider.select((s) => s.pipedInstance));
+    final ThemeData(:colorScheme) = Theme.of(context);
+
+    return AlertDialog(
+      insetPadding: const EdgeInsets.all(6),
+      contentPadding: const EdgeInsets.all(6),
+      icon: Icon(
+        SpotubeIcons.error,
+        color: colorScheme.error,
+      ),
+      title: Text(
+        context.l10n.piped_api_down,
+        style: TextStyle(color: colorScheme.error),
+      ),
+      content: Card(
+        child: Padding(
+          padding: const EdgeInsets.all(8.0),
+          child:
+              Text(context.l10n.piped_down_error_instructions(pipedInstance)),
+        ),
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.pop(context),
+          child: Text(context.l10n.ok),
+        ),
+        FilledButton(
+          onPressed: () => Navigator.pop(context),
+          child: Text(context.l10n.settings),
+        ),
+      ],
+    );
+  }
+}

lib/l10n/app_en.arb

@@ -254,5 +254,7 @@
   "ok": "Ok",
   "failed_to_encrypt": "Failed to encrypt",
   "encryption_failed_warning": "Spotube uses encryption to securely store your data. But failed to do so. So it'll fallback to insecure storage\nIf you're using linux, please make sure you've any secret-service (gnome-keyring, kde-wallet, keepassxc etc) installed",
-  "querying_info": "Querying info..."
+  "querying_info": "Querying info...",
+  "piped_api_down": "Piped API is down",
+  "piped_down_error_instructions": "The Piped instance {pipedInstance} is currently down\n\nEither change the instance or change the 'API type' to official YouTube API\n\nMake sure to restart the app after change"
 }

lib/models/spotube_track.dart

@@ -66,19 +66,17 @@ class SpotubeTrack extends Track {
         await client.search("$title - ${artists.join(", ")}").then(
       (res) {
         final siblings = res
+            .sorted((a, b) => a.views.compareTo(b.views))
             .where((item) {
               return artists.any(
                 (artist) =>
+                    client.preferences.searchMode == SearchMode.youtube ||
                     artist.toLowerCase() == item.channelName.toLowerCase(),
               );
             })
             .take(10)
             .toList();
 
-        if (siblings.isEmpty) {
-          return res.take(10).toList();
-        }
-
         return siblings;
       },
     );

lib/services/youtube/youtube.dart

@@ -1,5 +1,8 @@
-import 'package:flutter_desktop_tools/flutter_desktop_tools.dart';
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
 import 'package:piped_client/piped_client.dart';
+import 'package:spotube/collections/routes.dart';
+import 'package:spotube/components/shared/dialogs/piped_down_dialog.dart';
 import 'package:spotube/models/matched_track.dart';
 import 'package:spotube/provider/user_preferences_provider.dart';
 import 'package:spotube/utils/primitive_utils.dart';
@@ -133,6 +136,18 @@ class YoutubeEndpoints {
     }
   }
 
+  Future<void> showPipedErrorDialog(Exception e) async {
+    if (e is DioException && (e.response?.statusCode ?? 0) >= 500) {
+      final context = rootNavigatorKey?.currentContext;
+      if (context != null) {
+        await showDialog(
+          context: context,
+          builder: (context) => const PipedDownDialog(),
+        );
+      }
+    }
+  }
+
   Future<List<YoutubeVideoInfo>> search(String query) async {
     if (youtube != null) {
       final res = await youtube!.search(
@@ -142,22 +157,27 @@ class YoutubeEndpoints {
 
       return res.map(YoutubeVideoInfo.fromVideo).toList();
     } else {
-      final res = await piped!.search(
-        query,
-        switch (preferences.searchMode) {
-          SearchMode.youtube => PipedFilter.video,
-          SearchMode.youtubeMusic => PipedFilter.musicSongs,
-        },
-      );
-      return res.items
-          .whereType<PipedSearchItemStream>()
-          .map(
-            (e) => YoutubeVideoInfo.fromSearchItemStream(
-              e,
-              preferences.searchMode,
-            ),
-          )
-          .toList();
+      try {
+        final res = await piped!.search(
+          query,
+          switch (preferences.searchMode) {
+            SearchMode.youtube => PipedFilter.video,
+            SearchMode.youtubeMusic => PipedFilter.musicSongs,
+          },
+        );
+        return res.items
+            .whereType<PipedSearchItemStream>()
+            .map(
+              (e) => YoutubeVideoInfo.fromSearchItemStream(
+                e,
+                preferences.searchMode,
+              ),
+            )
+            .toList();
+      } on Exception catch (e) {
+        await showPipedErrorDialog(e);
+        rethrow;
+      }
     }
   }
 
@@ -193,19 +213,26 @@ class YoutubeEndpoints {
   }
 
   Future<(YoutubeVideoInfo info, String streamingUrl)> video(
-      String id, SearchMode searchMode) async {
+    String id,
+    SearchMode searchMode,
+  ) async {
     if (youtube != null) {
       final res = await youtube!.videos.get(id);
       return (
         YoutubeVideoInfo.fromVideo(res),
         await streamingUrl(id),
       );
     } else {
-      final res = await piped!.streams(id);
-      return (
-        YoutubeVideoInfo.fromStreamResponse(res, searchMode),
-        _pipedStreamResponseToStreamUrl(res),
-      );
+      try {
+        final res = await piped!.streams(id);
+        return (
+          YoutubeVideoInfo.fromStreamResponse(res, searchMode),
+          _pipedStreamResponseToStreamUrl(res),
+        );
+      } on Exception catch (e) {
+        await showPipedErrorDialog(e);
+        rethrow;
+      }
     }
   }
 }

untranslated_messages.json

@@ -1 +1,42 @@
-{}
+{
+  "bn": [
+    "piped_api_down",
+    "piped_down_error_instructions"
+  ],
+
+  "ca": [
+    "querying_info",
+    "piped_api_down",
+    "piped_down_error_instructions"
+  ],
+
+  "de": [
+    "piped_api_down",
+    "piped_down_error_instructions"
+  ],
+
+  "es": [
+    "piped_api_down",
+    "piped_down_error_instructions"
+  ],
+
+  "fr": [
+    "piped_api_down",
+    "piped_down_error_instructions"
+  ],
+
+  "hi": [
+    "piped_api_down",
+    "piped_down_error_instructions"
+  ],
+
+  "ja": [
+    "piped_api_down",
+    "piped_down_error_instructions"
+  ],
+
+  "zh": [
+    "piped_api_down",
+    "piped_down_error_instructions"
+  ]
+}