From 748bff63ea9d485cadb72887edd6084750be793c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Horv=C3=A1th=20Gergely?= <gergely9135@gmail.com>
Date: Sun, 15 Feb 2026 23:22:32 +0100
Subject: [PATCH] Send language to Watch and handle locale changes

iOS: Update WatchSessionManager to send the current language via WCSession.default.updateApplicationContext with logging and error handling, in addition to existing transferUserInfo. Dart: await initLang during startup and add dispatcher.onLocaleChanged handler that re-initializes language when the app is in auto-language mode, logs locale changes, and triggers a global UI update.
---
 firka/ios/Runner/WatchSessionManager.swift |  7 +++++++
 firka/lib/main.dart                        | 23 +++++++++++++++++++++-
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/firka/ios/Runner/WatchSessionManager.swift b/firka/ios/Runner/WatchSessionManager.swift
index 2801aa85..8acd1833 100644
--- a/firka/ios/Runner/WatchSessionManager.swift
+++ b/firka/ios/Runner/WatchSessionManager.swift
@@ -242,6 +242,13 @@ class WatchSessionManager: NSObject, WCSessionDelegate {
             return
         }
 
+        do {
+            try WCSession.default.updateApplicationContext(["language": languageCode])
+            print("[WatchSessionManager] Language '\(languageCode)' sent to Watch via applicationContext")
+        } catch {
+            print("[WatchSessionManager] Failed to update applicationContext for language: \(error)")
+        }
+
         WCSession.default.transferUserInfo([
             "id": "language_update",
             "language": languageCode
diff --git a/firka/lib/main.dart b/firka/lib/main.dart
index 47d52a46..047a4314 100644
--- a/firka/lib/main.dart
+++ b/firka/lib/main.dart
@@ -190,7 +190,7 @@ void initTheme(AppInitialization data) {
 
 Future<void> _initData(AppInitialization init) async {
   await init.settings.load(init.isar.appSettingsModels);
-  initLang(init);
+  await initLang(init);
   initTheme(init);
   init.settings = SettingsStore(init.l10n);
   await init.settings.load(init.isar.appSettingsModels);
@@ -202,6 +202,27 @@ Future<void> _initData(AppInitialization init) async {
     initTheme(init);
   };
 
+  dispatcher.onLocaleChanged = () {
+    final languageSetting =
+        init.settings.group("settings").subGroup("application")["language"]
+            as SettingsItemsRadio;
+    final isAutoLanguage = languageSetting.activeIndex == 0;
+    if (!isAutoLanguage) {
+      return;
+    }
+
+    final previousLocale = init.l10n.localeName;
+    unawaited(() async {
+      await initLang(init);
+      final nextLocale = init.l10n.localeName;
+      if (previousLocale != nextLocale) {
+        logger.info(
+            "[Init] System locale changed in auto mode: $previousLocale -> $nextLocale");
+      }
+      globalUpdate.update();
+    }());
+  };
+
   resetOldTimeTableCache(init.isar);
   resetOldHomeworkCache(init.isar);