feat: add sleep timer support

lib/components/player/player_actions.dart

@@ -10,11 +10,13 @@ import 'package:spotube/components/player/sibling_tracks_sheet.dart';
 import 'package:spotube/components/shared/adaptive/adaptive_pop_sheet_list.dart';
 import 'package:spotube/components/shared/heart_button.dart';
 import 'package:spotube/extensions/context.dart';
+import 'package:spotube/extensions/duration.dart';
 import 'package:spotube/models/local_track.dart';
 import 'package:spotube/models/logger.dart';
 import 'package:spotube/provider/download_manager_provider.dart';
 import 'package:spotube/provider/authentication_provider.dart';
 import 'package:spotube/provider/proxy_playlist/proxy_playlist_provider.dart';
+import 'package:spotube/provider/sleep_timer_provider.dart';
 import 'package:spotube/utils/type_conversion_utils.dart';
 
 class PlayerActions extends HookConsumerWidget {
@@ -39,6 +41,8 @@ class PlayerActions extends HookConsumerWidget {
         downloader.activeItem!.id == playlist.activeTrack?.id;
     final localTracks = [] /* ref.watch(localTracksProvider).value */;
     final auth = ref.watch(AuthenticationNotifier.provider);
+    final sleepTimer = ref.watch(SleepTimerNotifier.provider);
+    final sleepTimerNotifier = ref.watch(SleepTimerNotifier.notifier);
 
     final isDownloaded = useMemoized(() {
       return localTracks.any(
@@ -53,6 +57,18 @@ class PlayerActions extends HookConsumerWidget {
           true;
     }, [localTracks, playlist.activeTrack]);
 
+    final sleepTimerEntries = useMemoized(
+      () => {
+        context.l10n.mins(15): const Duration(minutes: 15),
+        context.l10n.mins(30): const Duration(minutes: 30),
+        context.l10n.hour(1): const Duration(hours: 1),
+        context.l10n.hour(2): const Duration(hours: 2),
+      },
+      [context.l10n],
+    );
+
+    var customHoursEnabled =
+        sleepTimer == null || sleepTimerEntries.values.contains(sleepTimer);
     return Row(
       mainAxisAlignment: mainAxisAlignment,
       children: [
@@ -129,30 +145,57 @@ class PlayerActions extends HookConsumerWidget {
         if (playlist.activeTrack != null && !isLocalTrack && auth != null)
           TrackHeartButton(track: playlist.activeTrack!),
         AdaptivePopSheetList(
-          offset: const Offset(0, -50 * 5),
+          offset: Offset(0, -50 * (sleepTimerEntries.values.length + 2)),
           headings: [
             Text(context.l10n.sleep_timer),
           ],
-          icon: const Icon(SpotubeIcons.timer),
+          icon: Icon(
+            SpotubeIcons.timer,
+            color: sleepTimer != null ? Colors.red : null,
+          ),
+          onSelected: (value) {
+            if (value == Duration.zero) {
+              sleepTimerNotifier.cancelSleepTimer();
+            } else {
+              sleepTimerNotifier.setSleepTimer(value);
+            }
+          },
           children: [
+            for (final entry in sleepTimerEntries.entries)
+              PopSheetEntry(
+                value: entry.value,
+                enabled: sleepTimer != entry.value,
+                title: Text(entry.key),
+              ),
             PopSheetEntry(
-              value: const Duration(minutes: 15),
-              title: Text(context.l10n.mins(15)),
-            ),
-            PopSheetEntry(
-              value: const Duration(minutes: 30),
-              title: Text(context.l10n.mins(30)),
-            ),
-            PopSheetEntry(
-              value: const Duration(hours: 1),
-              title: Text(context.l10n.hour(1)),
-            ),
-            PopSheetEntry(
-              value: const Duration(hours: 2),
-              title: Text(context.l10n.hours(2)),
+              title: Text(
+                customHoursEnabled
+                    ? context.l10n.custom_hours
+                    : sleepTimer.toHumanReadableString(),
+              ),
+              // only enabled when there's no preset timers selected
+              enabled: customHoursEnabled,
+              onTap: () async {
+                final currentTime = TimeOfDay.now();
+                final time = await showTimePicker(
+                  context: context,
+                  initialTime: currentTime,
+                );
+
+                if (time != null) {
+                  sleepTimerNotifier.setSleepTimer(
+                    Duration(
+                      hours: (time.hour - currentTime.hour).abs(),
+                      minutes: (time.minute - currentTime.minute).abs(),
+                    ),
+                  );
+                }
+              },
             ),
             PopSheetEntry(
               value: Duration.zero,
+              enabled: sleepTimer != Duration.zero && sleepTimer != null,
+              textColor: Colors.green,
               title: Text(context.l10n.cancel),
             ),
           ],

lib/components/shared/adaptive/adaptive_pop_sheet_list.dart

@@ -194,8 +194,8 @@ class _AdaptivePopSheetListItem<T> extends StatelessWidget {
           ? null
           : () {
               item.onTap?.call();
-              Navigator.pop(context);
               if (item.value != null) {
+                Navigator.pop(context);
                 onSelected?.call(item.value as T);
               }
             },

lib/components/shared/dialogs/track_details_dialog.dart

@@ -119,9 +119,9 @@ class TrackDetailsDialog extends HookWidget {
                   ),
                   if (entry.value is Widget)
                     entry.value as Widget
-                  else
+                  else if (entry.value is String)
                     Text(
-                      entry.value,
+                      entry.value as String,
                       style: theme.textTheme.bodyMedium,
                     ),
                 ],

lib/extensions/duration.dart

@@ -1,6 +1,6 @@
 import 'package:spotube/utils/primitive_utils.dart';
 
 extension DurationToHumanReadableString on Duration {
-  toHumanReadableString() =>
+  String toHumanReadableString() =>
       "${inMinutes.remainder(60)}:${PrimitiveUtils.zeroPadNumStr(inSeconds.remainder(60))}";
 }

lib/l10n/app_en.arb

@@ -243,5 +243,6 @@
   "sleep_timer": "Sleep Timer",
   "mins": "{minutes} Minutes",
   "hours": "{hours} Hours",
-  "hour": "{hours} Hour"
+  "hour": "{hours} Hour",
+  "custom_hours": "Custom Hours"
 }

lib/provider/sleep_timer_provider.dart

@@ -0,0 +1,31 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+
+class SleepTimerNotifier extends StateNotifier<Duration?> {
+  SleepTimerNotifier() : super(null);
+
+  Timer? _timer;
+
+  static final provider = StateNotifierProvider<SleepTimerNotifier, Duration?>(
+    (ref) => SleepTimerNotifier(),
+  );
+
+  static AlwaysAliveRefreshable<SleepTimerNotifier> get notifier =>
+      provider.notifier;
+
+  void setSleepTimer(Duration duration) {
+    state = duration;
+
+    _timer = Timer(duration, () {
+      //! This can be a reason  for app termination in iOS AppStore
+      exit(0);
+    });
+  }
+
+  void cancelSleepTimer() {
+    state = null;
+    _timer?.cancel();
+  }
+}