v1.5.0: UI rework, multi-progress tracking, performance optimizations

lib/services/notification_service.dart

@@ -0,0 +1,185 @@
+import 'dart:io';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+
+class NotificationService {
+  static final NotificationService _instance = NotificationService._internal();
+  factory NotificationService() => _instance;
+  NotificationService._internal();
+
+  final FlutterLocalNotificationsPlugin _notifications = FlutterLocalNotificationsPlugin();
+  bool _isInitialized = false;
+
+  static const int downloadProgressId = 1;
+  static const String channelId = 'download_progress';
+  static const String channelName = 'Download Progress';
+  static const String channelDescription = 'Shows download progress for tracks';
+
+  Future<void> initialize() async {
+    if (_isInitialized) return;
+
+    const androidSettings = AndroidInitializationSettings('@mipmap/ic_launcher');
+    const iosSettings = DarwinInitializationSettings(
+      requestAlertPermission: true,
+      requestBadgePermission: true,
+      requestSoundPermission: false,
+    );
+
+    const initSettings = InitializationSettings(
+      android: androidSettings,
+      iOS: iosSettings,
+    );
+
+    await _notifications.initialize(initSettings);
+
+    // Create notification channel for Android
+    if (Platform.isAndroid) {
+      await _notifications
+          .resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>()
+          ?.createNotificationChannel(
+            const AndroidNotificationChannel(
+              channelId,
+              channelName,
+              description: channelDescription,
+              importance: Importance.low,
+              showBadge: false,
+              playSound: false,
+              enableVibration: false,
+            ),
+          );
+    }
+
+    _isInitialized = true;
+  }
+
+  Future<void> showDownloadProgress({
+    required String trackName,
+    required String artistName,
+    required int progress,
+    required int total,
+  }) async {
+    if (!_isInitialized) await initialize();
+
+    final percentage = total > 0 ? (progress * 100 ~/ total) : 0;
+    
+    final androidDetails = AndroidNotificationDetails(
+      channelId,
+      channelName,
+      channelDescription: channelDescription,
+      importance: Importance.low,
+      priority: Priority.low,
+      showProgress: true,
+      maxProgress: 100,
+      progress: percentage,
+      ongoing: true,
+      autoCancel: false,
+      playSound: false,
+      enableVibration: false,
+      onlyAlertOnce: true,
+      icon: '@mipmap/ic_launcher',
+    );
+
+    const iosDetails = DarwinNotificationDetails(
+      presentAlert: false,
+      presentBadge: false,
+      presentSound: false,
+    );
+
+    final details = NotificationDetails(
+      android: androidDetails,
+      iOS: iosDetails,
+    );
+
+    await _notifications.show(
+      downloadProgressId,
+      'Downloading $trackName',
+      '$artistName • $percentage%',
+      details,
+    );
+  }
+
+  Future<void> showDownloadComplete({
+    required String trackName,
+    required String artistName,
+    int? completedCount,
+    int? totalCount,
+  }) async {
+    if (!_isInitialized) await initialize();
+
+    final title = completedCount != null && totalCount != null
+        ? 'Download Complete ($completedCount/$totalCount)'
+        : 'Download Complete';
+
+    const androidDetails = AndroidNotificationDetails(
+      channelId,
+      channelName,
+      channelDescription: channelDescription,
+      importance: Importance.defaultImportance,
+      priority: Priority.defaultPriority,
+      autoCancel: true,
+      playSound: false,
+      icon: '@mipmap/ic_launcher',
+    );
+
+    const iosDetails = DarwinNotificationDetails(
+      presentAlert: true,
+      presentBadge: true,
+      presentSound: false,
+    );
+
+    const details = NotificationDetails(
+      android: androidDetails,
+      iOS: iosDetails,
+    );
+
+    await _notifications.show(
+      downloadProgressId,
+      title,
+      '$trackName - $artistName',
+      details,
+    );
+  }
+
+  Future<void> showQueueComplete({
+    required int completedCount,
+    required int failedCount,
+  }) async {
+    if (!_isInitialized) await initialize();
+
+    final title = failedCount > 0
+        ? 'Downloads Finished ($completedCount done, $failedCount failed)'
+        : 'All Downloads Complete';
+
+    const androidDetails = AndroidNotificationDetails(
+      channelId,
+      channelName,
+      channelDescription: channelDescription,
+      importance: Importance.defaultImportance,
+      priority: Priority.defaultPriority,
+      autoCancel: true,
+      playSound: true,
+      icon: '@mipmap/ic_launcher',
+    );
+
+    const iosDetails = DarwinNotificationDetails(
+      presentAlert: true,
+      presentBadge: true,
+      presentSound: true,
+    );
+
+    const details = NotificationDetails(
+      android: androidDetails,
+      iOS: iosDetails,
+    );
+
+    await _notifications.show(
+      downloadProgressId,
+      title,
+      '$completedCount tracks downloaded successfully',
+      details,
+    );
+  }
+
+  Future<void> cancelDownloadNotification() async {
+    await _notifications.cancel(downloadProgressId);
+  }
+}

lib/services/platform_bridge.dart

@@ -54,6 +54,7 @@ class PlatformBridge {
     int discNumber = 1,
     int totalTracks = 1,
     String? releaseDate,
+    String? itemId,
   }) async {
     final request = jsonEncode({
       'isrc': isrc,
@@ -73,6 +74,7 @@ class PlatformBridge {
       'disc_number': discNumber,
       'total_tracks': totalTracks,
       'release_date': releaseDate ?? '',
+      'item_id': itemId ?? '',
     });
     
     final result = await _channel.invokeMethod('downloadTrack', request);
@@ -98,6 +100,7 @@ class PlatformBridge {
     int totalTracks = 1,
     String? releaseDate,
     String preferredService = 'tidal',
+    String? itemId,
   }) async {
     final request = jsonEncode({
       'isrc': isrc,
@@ -117,18 +120,40 @@ class PlatformBridge {
       'disc_number': discNumber,
       'total_tracks': totalTracks,
       'release_date': releaseDate ?? '',
+      'item_id': itemId ?? '',
     });
     
     final result = await _channel.invokeMethod('downloadWithFallback', request);
     return jsonDecode(result as String) as Map<String, dynamic>;
   }
 
-  /// Get download progress
+  /// Get download progress (legacy single download)
   static Future<Map<String, dynamic>> getDownloadProgress() async {
     final result = await _channel.invokeMethod('getDownloadProgress');
     return jsonDecode(result as String) as Map<String, dynamic>;
   }
 
+  /// Get progress for all active downloads (concurrent mode)
+  static Future<Map<String, dynamic>> getAllDownloadProgress() async {
+    final result = await _channel.invokeMethod('getAllDownloadProgress');
+    return jsonDecode(result as String) as Map<String, dynamic>;
+  }
+
+  /// Initialize progress tracking for a download item
+  static Future<void> initItemProgress(String itemId) async {
+    await _channel.invokeMethod('initItemProgress', {'item_id': itemId});
+  }
+
+  /// Finish progress tracking for a download item
+  static Future<void> finishItemProgress(String itemId) async {
+    await _channel.invokeMethod('finishItemProgress', {'item_id': itemId});
+  }
+
+  /// Clear progress tracking for a download item
+  static Future<void> clearItemProgress(String itemId) async {
+    await _channel.invokeMethod('clearItemProgress', {'item_id': itemId});
+  }
+
   /// Set download directory
   static Future<void> setDownloadDirectory(String path) async {
     await _channel.invokeMethod('setDownloadDirectory', {'path': path});