feat(live): refresh the channel list on demand and on resume

Live categories and channels were fetched once per app session and kept
in memory until the process died, so a TV box left running never picked
up provider changes.

- Live tab: pull-to-refresh plus a remote-friendly refresh button, and an
  automatic refetch when the app returns to the foreground after 4 hours.
- Settings: the "refresh cache" entry was a no-op delay; it now forces a
  reload of live channels, movies, series and EPG.
- The Xtream service keeps the last non-empty live lists and serves them
  when a refetch fails, so a refresh on a not-yet-connected network does
  not blank the screen.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lib/features/iptv/services/xtream_service_mobile.dart

@@ -98,6 +98,14 @@ class XtreamServiceMobile {
   /// changing any call site.
   final Map<String, model.Channel> _channelIndex = {};
 
+  /// Last non-empty live lists, keyed by category id ('' = all channels).
+  ///
+  /// The fetchers swallow errors and return `[]`, so a refresh attempted while
+  /// the network is down (typically right after a TV wakes from standby) would
+  /// otherwise replace a good list with an empty screen.
+  final Map<String, List<model.Channel>> _lastLiveChannels = {};
+  List<model.Category>? _lastLiveCategories;
+
   late final XmltvService _xmltv = XmltvService(cacheDir);
 
   /// User-provided XMLTV URL (empty = not configured).
@@ -200,7 +208,18 @@ class XtreamServiceMobile {
 
   /// Get live channels for a category (with batch EPG support)
   /// If categoryId is empty, fetches ALL channels from all categories
+  ///
+  /// Falls back to the last good list for this category when the fetch fails.
   Future<List<model.Channel>> getLiveChannels(String categoryId) async {
+    final channels = await _fetchLiveChannels(categoryId);
+    if (channels.isNotEmpty) {
+      _lastLiveChannels[categoryId] = channels;
+      return channels;
+    }
+    return _lastLiveChannels[categoryId] ?? channels;
+  }
+
+  Future<List<model.Channel>> _fetchLiveChannels(String categoryId) async {
     try {
       final queryParams = {
         'username': _username,
@@ -463,7 +482,18 @@ class XtreamServiceMobile {
   }
 
   /// Get live TV categories
+  ///
+  /// Falls back to the last good list when the fetch fails.
   Future<List<model.Category>> getLiveCategories() async {
+    final categories = await _fetchLiveCategories();
+    if (categories.isNotEmpty) {
+      _lastLiveCategories = categories;
+      return categories;
+    }
+    return _lastLiveCategories ?? categories;
+  }
+
+  Future<List<model.Category>> _fetchLiveCategories() async {
     try {
       if (kDebugMode) print('🔍 Loading live TV categories with 8s timeout...');
 

lib/features/iptv/widgets/mobile_live_tv_tab.dart

@@ -27,7 +27,11 @@ class MobileLiveTVTab extends ConsumerStatefulWidget {
 }
 
 class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
-    with AutomaticKeepAliveClientMixin {
+    with AutomaticKeepAliveClientMixin, WidgetsBindingObserver {
+  /// Coming back to the foreground after this long refetches the channel list,
+  /// so an app left running for days on a TV box picks up provider changes.
+  static const _autoRefreshAfter = Duration(hours: 4);
+
   final ScrollController _scrollController = ScrollController();
   final TextEditingController _searchController = TextEditingController();
   final FocusNode _searchFocusNode = FocusNode();
@@ -36,12 +40,16 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
   bool _isSearchEditing = false;
   bool _justReturnedFromPlayer =
       false; // Flag to prevent PopScope interception after player
+  bool _isRefreshing = false;
 
   Timer? _searchTimer;
 
   @override
   void initState() {
     super.initState();
+    WidgetsBinding.instance.addObserver(this);
+    // Anchor the auto-refresh clock to this first load.
+    ref.read(liveCatalogRefreshedAtProvider);
     // [P1-1 FIX] Debounce search input to prevent per-keystroke rebuilds
     _searchTimer = null;
     _searchController.addListener(() {
@@ -62,6 +70,7 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
 
   @override
   void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
     _scrollController.dispose();
     _searchController.dispose();
     _searchFocusNode.dispose();
@@ -72,6 +81,39 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
   @override
   bool get wantKeepAlive => true;
 
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    if (state != AppLifecycleState.resumed) return;
+    final lastRefresh = ref.read(liveCatalogRefreshedAtProvider);
+    if (DateTime.now().difference(lastRefresh) >= _autoRefreshAfter) {
+      _refreshChannels();
+    }
+  }
+
+  /// Refetch categories and the open category's channels. The current lists
+  /// stay on screen until the new ones arrive.
+  Future<void> _refreshChannels() async {
+    if (_isRefreshing) return;
+    setState(() => _isRefreshing = true);
+
+    refreshLiveCatalog(ref);
+    final categoryId = ref.read(mobileLiveTvUiStateProvider).selectedCategoryId;
+    try {
+      await Future.wait<Object>([
+        ref.read(mobileLiveCategoriesProvider(widget.playlist).future),
+        if (categoryId != null)
+          ref.read(
+            mobileLiveChannelsByCategoryProvider((widget.playlist, categoryId))
+                .future,
+          ),
+      ]);
+    } catch (_) {
+      // Errors surface through the providers' own error states.
+    } finally {
+      if (mounted) setState(() => _isRefreshing = false);
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     super.build(context);
@@ -210,15 +252,20 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
 
               return SafeArea(
                 bottom: false,
+                child: RefreshIndicator(
+                  onRefresh: _refreshChannels,
+                  color: AppColors.primary,
                   child: CustomScrollView(
                     controller: _scrollController,
+                    physics: const AlwaysScrollableScrollPhysics(),
                     slivers: [
                       // Floating Header (Search + Navigation)
                       SliverAppBar(
                         floating: false,
                         pinned: true,
                         snap: false,
-                      backgroundColor: const Color(0xFF000000), // Opaque black
+                        backgroundColor:
+                            const Color(0xFF000000), // Opaque black
                         elevation: 0,
                         scrolledUnderElevation: 0,
                         automaticallyImplyLeading: false,
@@ -249,7 +296,8 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
                                   borderRadius: BorderRadius.circular(12),
                                   child: Container(
                                     height: 48,
-                                  decoration: AppDecorations.searchBar(context),
+                                    decoration:
+                                        AppDecorations.searchBar(context),
                                     padding: const EdgeInsets.symmetric(
                                         horizontal: 12),
                                     child: Row(
@@ -269,7 +317,8 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
                                               focusNode: _searchFocusNode,
                                               readOnly: !_isSearchEditing,
                                               style: TextStyle(
-                                              color: AppDecorations.textPrimary(
+                                                color:
+                                                    AppDecorations.textPrimary(
                                                         context),
                                               ),
                                               decoration: const InputDecoration(
@@ -292,7 +341,8 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
                                                 _searchController.clear(),
                                             child: Icon(
                                               Icons.close,
-                                            color: AppDecorations.textSecondary(
+                                              color:
+                                                  AppDecorations.textSecondary(
                                                       context),
                                             ),
                                           ),
@@ -312,8 +362,8 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
                                       IconButton(
                                         icon: Icon(
                                           Icons.arrow_back,
-                                        color:
-                                            AppDecorations.textPrimary(context),
+                                          color: AppDecorations.textPrimary(
+                                              context),
                                         ),
                                         onPressed: () {
                                           if (_searchQuery.isNotEmpty) {
@@ -341,17 +391,38 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
                                                 ? 'Favoris'
                                                 : showGrid
                                                     ? 'Catégories'
-                                                  : uiState.selectedCategory ??
+                                                    : uiState
+                                                            .selectedCategory ??
                                                         'Chaînes',
                                         style: TextStyle(
-                                        color:
-                                            AppDecorations.textPrimary(context),
+                                          color: AppDecorations.textPrimary(
+                                              context),
                                           fontWeight: FontWeight.bold,
                                           fontSize: 18,
                                         ),
                                         overflow: TextOverflow.ellipsis,
                                       ),
                                     ),
+                                    IconButton(
+                                      tooltip: 'Actualiser les chaînes',
+                                      icon: _isRefreshing
+                                          ? const SizedBox(
+                                              width: 20,
+                                              height: 20,
+                                              child: CircularProgressIndicator(
+                                                strokeWidth: 2,
+                                              ),
+                                            )
+                                          : Icon(
+                                              Icons.refresh,
+                                              color:
+                                                  AppDecorations.textSecondary(
+                                                      context),
+                                            ),
+                                      onPressed: _isRefreshing
+                                          ? null
+                                          : _refreshChannels,
+                                    ),
                                     IconButton(
                                       icon: Icon(
                                         _showFavoritesOnly
@@ -363,7 +434,8 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
                                                 context),
                                       ),
                                       onPressed: () => setState(() {
-                                      _showFavoritesOnly = !_showFavoritesOnly;
+                                        _showFavoritesOnly =
+                                            !_showFavoritesOnly;
                                         if (_showFavoritesOnly) {
                                           uiNotifier.state = uiState.copyWith(
                                             isCategoryView: false,
@@ -402,6 +474,7 @@ class _MobileLiveTVTabState extends ConsumerState<MobileLiveTVTab>
                         ),
                     ],
                   ),
+                ),
               );
             },
           ),

lib/features/iptv/widgets/mobile_movies_tab.dart

@@ -225,6 +225,7 @@ class _MobileMoviesTabState extends ConsumerState<MobileMoviesTab>
   @override
   Widget build(BuildContext context) {
     super.build(context); // Required for AutomaticKeepAliveClientMixin
+    ref.listen<int>(fullCatalogRefreshTickProvider, (_, __) => _refresh());
     final settings = ref.watch(mobileSettingsProvider);
     final watchHistory = ref.watch(mobileWatchHistoryProvider);
 

lib/features/iptv/widgets/mobile_series_tab.dart

@@ -216,6 +216,7 @@ class _MobileSeriesTabState extends ConsumerState<MobileSeriesTab>
   @override
   Widget build(BuildContext context) {
     super.build(context);
+    ref.listen<int>(fullCatalogRefreshTickProvider, (_, __) => _refresh());
     final settings = ref.watch(mobileSettingsProvider);
 
     if (_categories.isEmpty && !_isLoading) {

lib/features/iptv/widgets/mobile_settings_tab.dart

@@ -3,6 +3,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:google_fonts/google_fonts.dart';
 // import 'package:dio_cache_interceptor_hive_store/dio_cache_interceptor_hive_store.dart';
 import 'package:xtremobile/mobile/providers/mobile_settings_providers.dart';
+import 'package:xtremobile/mobile/providers/mobile_xtream_providers.dart';
 import 'package:xtremobile/mobile/widgets/tv_focusable.dart';
 import 'package:xtremobile/core/theme/app_decorations.dart';
 import 'package:xtremobile/core/theme/app_theme.dart';
@@ -106,7 +107,7 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
                       ),
                     ),
                     Text(
-                      'Version 1.6.1',
+                      'Version 1.7.2',
                       style: GoogleFonts.inter(
                         fontSize: 13,
                         color: AppDecorations.textSecondary(context),
@@ -179,8 +180,7 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
           _buildSettingItem(
             icon: Icons.public,
             title: 'EPG communautaire',
-            subtitle:
-                'Repli quand le fournisseur ne renvoie aucun programme',
+            subtitle: 'Repli quand le fournisseur ne renvoie aucun programme',
             value: settings.useCommunityEpg ? 'Activé' : 'Désactivé',
             onTap: () => ref
                 .read(mobileSettingsProvider.notifier)
@@ -197,9 +197,8 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
             onTap: () => _showKeyboardDialog(
               'URL XMLTV',
               _xmltvController,
-              (val) => ref
-                  .read(mobileSettingsProvider.notifier)
-                  .setXmltvUrl(val),
+              (val) =>
+                  ref.read(mobileSettingsProvider.notifier).setXmltvUrl(val),
             ),
           ),
 
@@ -254,8 +253,8 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
 
           _buildSettingItem(
             icon: _isRefreshingCache ? Icons.hourglass_empty : Icons.refresh,
-            title: 'Actualiser le cache',
-            subtitle: 'Recharge films, séries et EPG',
+            title: 'Forcer l\'actualisation',
+            subtitle: 'Recharge chaînes, films, séries et EPG',
             value: _isRefreshingCache ? '...' : 'Appuyer',
             onTap: _isRefreshingCache ? null : _refreshCache,
           ),
@@ -319,15 +318,15 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
     setState(() => _isRefreshingCache = true);
 
     try {
-      // final dir = await getApplicationDocumentsDirectory();
-      // final cacheStore = HiveCacheStore(dir.path);
-      // await cacheStore.clean();
-      await Future.delayed(const Duration(seconds: 1));
+      refreshFullCatalog(ref);
+      // Brief pause so the tap visibly registers on a TV remote.
+      await Future.delayed(const Duration(milliseconds: 600));
 
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
           const SnackBar(
-            content: Text('Cache actualisé ! Relancez l\'app pour recharger.'),
+            content:
+                Text('Chaînes, films, séries et EPG en cours de rechargement'),
             backgroundColor: AppColors.success,
             duration: Duration(seconds: 3),
           ),
@@ -336,7 +335,8 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
     } catch (e) {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
-          SnackBar(content: Text('Erreur: $e'), backgroundColor: AppColors.error),
+          SnackBar(
+              content: Text('Erreur: $e'), backgroundColor: AppColors.error),
         );
       }
     } finally {
@@ -392,21 +392,25 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
                         children: segments.map((seg) {
                           final (mode, icon, label) = seg;
                           final selected = themeState.appThemeMode == mode;
-                        final accentColor = Theme.of(context).colorScheme.primary;
+                          final accentColor =
+                              Theme.of(context).colorScheme.primary;
                           return Expanded(
                             child: TVFocusable(
                               onPressed: () => notifier.setThemeMode(mode),
                               borderRadius: BorderRadius.circular(8),
                               child: AnimatedContainer(
                                 duration: const Duration(milliseconds: 200),
-                              margin: const EdgeInsets.symmetric(horizontal: 2),
+                                margin:
+                                    const EdgeInsets.symmetric(horizontal: 2),
                                 padding: const EdgeInsets.symmetric(
                                   vertical: 7,
                                 ),
                                 decoration: BoxDecoration(
                                   color: selected
                                       ? accentColor
-                                    : Theme.of(context).colorScheme.surfaceContainerHighest,
+                                      : Theme.of(context)
+                                          .colorScheme
+                                          .surfaceContainerHighest,
                                   borderRadius: BorderRadius.circular(8),
                                 ),
                                 child: Column(
@@ -417,7 +421,8 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
                                       size: 16,
                                       color: selected
                                           ? AppColors.onSurface
-                                        : AppDecorations.textSecondary(context),
+                                          : AppDecorations.textSecondary(
+                                              context),
                                     ),
                                     const SizedBox(height: 3),
                                     Text(
@@ -429,7 +434,8 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
                                             : FontWeight.w500,
                                         color: selected
                                             ? AppColors.onSurface
-                                          : AppDecorations.textSecondary(context),
+                                            : AppDecorations.textSecondary(
+                                                context),
                                       ),
                                     ),
                                   ],
@@ -483,7 +489,8 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
           ),
           child: Row(
             children: [
-              Icon(icon, color: Theme.of(context).colorScheme.primary, size: 24),
+              Icon(icon,
+                  color: Theme.of(context).colorScheme.primary, size: 24),
               const SizedBox(width: 16),
               Expanded(
                 child: Column(
@@ -514,7 +521,10 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
                   vertical: 6,
                 ),
                 decoration: BoxDecoration(
-                  color: Theme.of(context).colorScheme.primary.withValues(alpha: 0.15),
+                  color: Theme.of(context)
+                      .colorScheme
+                      .primary
+                      .withValues(alpha: 0.15),
                   borderRadius: BorderRadius.circular(8),
                 ),
                 child: Text(
@@ -562,7 +572,8 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
           ),
           child: Row(
             children: [
-              Icon(icon, color: Theme.of(context).colorScheme.primary, size: 24),
+              Icon(icon,
+                  color: Theme.of(context).colorScheme.primary, size: 24),
               const SizedBox(width: 16),
               Expanded(
                 child: Column(
@@ -592,7 +603,8 @@ class _MobileSettingsTabState extends ConsumerState<MobileSettingsTab> {
                   ],
                 ),
               ),
-              Icon(Icons.edit, color: AppDecorations.textSecondary(context), size: 20),
+              Icon(Icons.edit,
+                  color: AppDecorations.textSecondary(context), size: 20),
             ],
           ),
         ),

lib/mobile/providers/mobile_xtream_providers.dart

@@ -30,10 +30,44 @@ final mobileXtreamServiceProvider =
     }
   });
 
+  // A full catalogue refresh from the settings also drops the cached EPG.
+  ref.listen<int>(
+      fullCatalogRefreshTickProvider, (_, __) => service.clearCache());
+
   ref.onDispose(service.dispose);
   return service;
 });
 
+/// When the live catalogue was last fetched or explicitly refreshed.
+/// Drives the auto-refresh when the app comes back to the foreground.
+final liveCatalogRefreshedAtProvider =
+    StateProvider<DateTime>((ref) => DateTime.now());
+
+/// Bumped by the settings "force refresh". The movies and series tabs, which
+/// hold their lists in local state, listen to it to reload.
+final fullCatalogRefreshTickProvider = StateProvider<int>((ref) => 0);
+
+/// Forces the live categories and channels to be refetched from the panel.
+///
+/// The Xtream service is kept: it falls back to its last good lists if the
+/// refetch fails, so a flaky network never empties the screen.
+void refreshLiveCatalog(WidgetRef ref) {
+  ref.invalidate(mobileLiveCategoriesProvider);
+  ref.invalidate(mobileLiveChannelsByCategoryProvider);
+  ref.invalidate(mobileLiveChannelsProvider);
+  ref.read(liveCatalogRefreshedAtProvider.notifier).state = DateTime.now();
+}
+
+/// Forces the whole catalogue (live, movies, series) and the EPG to reload.
+void refreshFullCatalog(WidgetRef ref) {
+  refreshLiveCatalog(ref);
+  ref.invalidate(mobileMoviesProvider);
+  ref.invalidate(mobileSeriesCategoriesProvider);
+  ref.invalidate(mobileSeriesProvider);
+  ref.invalidate(mobileSeriesInfoByPlaylistProvider);
+  ref.read(fullCatalogRefreshTickProvider.notifier).state++;
+}
+
 /// Mobile-specific live categories provider (for Live TV category grid)
 final mobileLiveCategoriesProvider =
     FutureProvider.family<List<model.Category>, PlaylistConfig>(
@@ -43,9 +77,9 @@ final mobileLiveCategoriesProvider =
 });
 
 /// Mobile-specific live channels provider (loads channels for a specific category)
-final mobileLiveChannelsByCategoryProvider = FutureProvider.family<
-    List<model.Channel>,
-    (PlaylistConfig, String)>((ref, params) async {
+final mobileLiveChannelsByCategoryProvider =
+    FutureProvider.family<List<model.Channel>, (PlaylistConfig, String)>(
+        (ref, params) async {
   final (playlist, categoryId) = params;
   final service = await ref.watch(mobileXtreamServiceProvider(playlist).future);
   return service.getLiveChannels(categoryId);
@@ -79,8 +113,9 @@ final mobileLiveChannelsProvider =
 
   for (int batchNum = 0; batchNum < totalBatches; batchNum++) {
     int startIdx = batchNum * batchSize;
-    int endIdx =
-        (startIdx + batchSize < categories.length) ? startIdx + batchSize : categories.length;
+    int endIdx = (startIdx + batchSize < categories.length)
+        ? startIdx + batchSize
+        : categories.length;
     final batch = categories.sublist(startIdx, endIdx);
 
     print(
@@ -120,7 +155,8 @@ final mobileLiveChannelsProvider =
 
 /// Mobile-specific movies provider
 final mobileMoviesProvider =
-    FutureProvider.family<List<model.VodItem>, PlaylistConfig>((ref, playlist) async {
+    FutureProvider.family<List<model.VodItem>, PlaylistConfig>(
+        (ref, playlist) async {
   final service = await ref.watch(mobileXtreamServiceProvider(playlist).future);
   return service.getMoviesByCategory(""); // Fetch all or default
 });
@@ -134,8 +170,9 @@ final mobileSeriesCategoriesProvider =
 });
 
 /// Mobile-specific series pagination provider
-final mobileSeriesProvider = FutureProvider.family<List<model.Series>,
-    (PlaylistConfig, String?)>((ref, params) async {
+final mobileSeriesProvider =
+    FutureProvider.family<List<model.Series>, (PlaylistConfig, String?)>(
+        (ref, params) async {
   final (playlist, categoryId) = params;
   final service = await ref.watch(mobileXtreamServiceProvider(playlist).future);
   return service.getSeriesPaginated(categoryId: categoryId);
@@ -161,7 +198,8 @@ class SeriesInfoRequest {
 }
 
 final mobileSeriesInfoByPlaylistProvider =
-    FutureProvider.family<model.SeriesInfo?, SeriesInfoRequest>((ref, request) async {
+    FutureProvider.family<model.SeriesInfo?, SeriesInfoRequest>(
+        (ref, request) async {
   final service =
       await ref.watch(mobileXtreamServiceProvider(request.playlist).future);
   return service.getSeriesInfo(request.seriesId);