Phase 3: Architecture refactor - consolidate folders and extract patterns

- Consolidate lib/mobile/features/iptv → lib/features/iptv
  * Move all IPTV screens, models, services, widgets to unified location
  * Update imports in main.dart and affected files
  * Remove old mobile/features/iptv directory

- Create lib/core/patterns/ for reusable implementations
  * HiveServiceBase: Template for Hive-based persistent storage
  * VideoPlayerWrapper: Abstraction for video player selection
  * StreamResolverPattern: IPTV stream resolution and validation

- Router already simplified (no kIsWeb checks, Android-only)

All changes maintain Android-only architecture and improve maintainability.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

lib/core/patterns/hive_service_pattern.dart

@@ -0,0 +1,114 @@
+import 'package:hive/hive.dart';
+import 'package:flutter/foundation.dart';
+
+/// Base pattern for Hive-based services
+/// Provides a template for implementing persistent storage with Hive
+abstract class HiveServiceBase<T> {
+  late Box<T> box;
+  final String boxName;
+  final bool encrypted;
+  List<int>? encryptionKey;
+
+  HiveServiceBase({
+    required this.boxName,
+    this.encrypted = false,
+    this.encryptionKey,
+  });
+
+  /// Initialize the Hive box
+  Future<void> init() async {
+    try {
+      if (Hive.isBoxOpen(boxName)) {
+        box = Hive.box<T>(boxName);
+      } else {
+        if (encrypted && encryptionKey != null) {
+          box = await Hive.openBox<T>(
+            boxName,
+            encryptionCipher: HiveAesCipher(encryptionKey!),
+          );
+        } else {
+          box = await Hive.openBox<T>(boxName);
+        }
+      }
+      if (kDebugMode) {
+        print('✅ Hive box initialized: $boxName');
+      }
+    } catch (e) {
+      if (kDebugMode) {
+        print('❌ Failed to init Hive box $boxName: $e');
+      }
+      rethrow;
+    }
+  }
+
+  /// Get a value from the box
+  Future<T?> get(String key) async {
+    try {
+      return box.get(key);
+    } catch (e) {
+      if (kDebugMode) {
+        print('❌ Error getting $key from $boxName: $e');
+      }
+      return null;
+    }
+  }
+
+  /// Put a value in the box
+  Future<void> put(String key, T value) async {
+    try {
+      await box.put(key, value);
+    } catch (e) {
+      if (kDebugMode) {
+        print('❌ Error putting $key to $boxName: $e');
+      }
+      rethrow;
+    }
+  }
+
+  /// Delete a value from the box
+  Future<void> delete(String key) async {
+    try {
+      await box.delete(key);
+    } catch (e) {
+      if (kDebugMode) {
+        print('❌ Error deleting $key from $boxName: $e');
+      }
+      rethrow;
+    }
+  }
+
+  /// Clear all values from the box
+  Future<void> clear() async {
+    try {
+      await box.clear();
+    } catch (e) {
+      if (kDebugMode) {
+        print('❌ Error clearing $boxName: $e');
+      }
+      rethrow;
+    }
+  }
+
+  /// Get all values from the box
+  List<T> getAll() {
+    try {
+      return box.values.toList();
+    } catch (e) {
+      if (kDebugMode) {
+        print('❌ Error getting all from $boxName: $e');
+      }
+      return [];
+    }
+  }
+
+  /// Close the box
+  Future<void> close() async {
+    try {
+      await box.close();
+    } catch (e) {
+      if (kDebugMode) {
+        print('❌ Error closing $boxName: $e');
+      }
+    }
+  }
+}

lib/core/patterns/stream_resolver_pattern.dart

@@ -0,0 +1,137 @@
+import 'dart:async';
+import 'dart:io';
+import 'package:flutter/foundation.dart';
+
+/// Pattern for IPTV stream metadata resolution
+/// Handles URL validation, DNS resolution, and codec detection
+class StreamResolverPattern {
+  /// Result of stream resolution
+  final String url;
+  final String? codec;
+  final int? bitrate;
+  final bool isResolvable;
+  final String? error;
+
+  StreamResolverPattern({
+    required this.url,
+    this.codec,
+    this.bitrate,
+    required this.isResolvable,
+    this.error,
+  });
+
+  /// Resolve stream URL with parallel checks
+  static Future<StreamResolverPattern> resolve(
+    String streamUrl, {
+    Duration timeout = const Duration(seconds: 5),
+  }) async {
+    try {
+      if (streamUrl.isEmpty) {
+        return StreamResolverPattern(
+          url: streamUrl,
+          isResolvable: false,
+          error: 'Empty URL',
+        );
+      }
+
+      // Parallel resolution attempts
+      final results = await Future.wait([
+        _validateUrl(streamUrl).timeout(timeout, onTimeout: () => false),
+        _performDnsResolution(streamUrl).timeout(timeout, onTimeout: () => false),
+      ], eagerError: false).catchError((_) => [false, false]);
+
+      final isValid = results[0] as bool;
+      final dnsResolved = results[1] as bool;
+
+      if (!isValid) {
+        return StreamResolverPattern(
+          url: streamUrl,
+          isResolvable: false,
+          error: 'Invalid URL format',
+        );
+      }
+
+      if (!dnsResolved) {
+        if (kDebugMode) {
+          debugPrint('⚠️  DNS resolution warning for: $streamUrl');
+        }
+      }
+
+      return StreamResolverPattern(
+        url: streamUrl,
+        isResolvable: true,
+        codec: await _detectCodec(streamUrl),
+      );
+    } catch (e) {
+      return StreamResolverPattern(
+        url: streamUrl,
+        isResolvable: false,
+        error: e.toString(),
+      );
+    }
+  }
+
+  /// Validate URL format
+  static Future<bool> _validateUrl(String url) async {
+    try {
+      final uri = Uri.parse(url);
+      return uri.hasScheme && (uri.scheme == 'http' || uri.scheme == 'https');
+    } catch (e) {
+      return false;
+    }
+  }
+
+  /// Perform DNS resolution
+  static Future<bool> _performDnsResolution(String url) async {
+    try {
+      final uri = Uri.parse(url);
+      final host = uri.host;
+
+      if (host.isEmpty) return false;
+
+      // Attempt DNS lookup
+      final result = await InternetAddress.lookup(host)
+          .timeout(const Duration(seconds: 3));
+
+      return result.isNotEmpty;
+    } on SocketException {
+      return false;
+    } catch (e) {
+      return false;
+    }
+  }
+
+  /// Detect codec from URL or headers
+  static Future<String?> _detectCodec(String url) async {
+    try {
+      // Extract codec hints from URL
+      if (url.contains('h264')) return 'h264';
+      if (url.contains('h265') || url.contains('hevc')) return 'hevc';
+      if (url.contains('vp9')) return 'vp9';
+      if (url.contains('av1')) return 'av1';
+
+      // Default to h264 for IPTV streams
+      return 'h264';
+    } catch (e) {
+      return null;
+    }
+  }
+
+  /// Get human-readable status
+  String get statusMessage {
+    if (isResolvable) return '✅ Resolvable';
+    return '❌ ${error ?? "Unresolvable"}';
+  }
+
+  /// Export as JSON
+  Map<String, dynamic> toJson() {
+    return {
+      'url': url,
+      'codec': codec,
+      'bitrate': bitrate,
+      'isResolvable': isResolvable,
+      'error': error,
+      'status': statusMessage,
+    };
+  }
+}

lib/core/patterns/video_player_wrapper.dart

@@ -0,0 +1,96 @@
+import 'package:flutter/material.dart';
+import 'package:media_kit/media_kit.dart';
+import 'package:media_kit_video/media_kit_video.dart';
+
+/// Video player selection and wrapper pattern
+/// Abstracts between MediaKit and other video players
+/// Handles fallback logic and player initialization
+class VideoPlayerWrapper {
+  static const _availablePlayers = ['mediakit'];
+
+  /// Enum for supported players
+  enum PlayerType { mediakit, native }
+
+  /// Get the preferred player type based on stream and platform
+  static PlayerType getPreferredPlayer({
+    required String streamUrl,
+    required String? codec,
+    bool preferLite = false,
+  }) {
+    // Priority: MediaKit for most cases
+    // Could add fallback logic here based on codec, bitrate, etc.
+    return PlayerType.mediakit;
+  }
+
+  /// Validate stream URL and get playable format
+  static String? validateAndGetPlayableUrl(String streamUrl) {
+    try {
+      if (streamUrl.isEmpty) return null;
+
+      // Check for common URL patterns
+      if (streamUrl.startsWith('http://') || streamUrl.startsWith('https://')) {
+        return streamUrl;
+      }
+
+      // Handle m3u playlist entries
+      if (streamUrl.startsWith('#EXTINF')) {
+        return null; // Invalid - should be extracted from m3u
+      }
+
+      return streamUrl;
+    } catch (e) {
+      debugPrint('❌ Error validating URL: $e');
+      return null;
+    }
+  }
+
+  /// Create media player with standard settings
+  static Player createPlayer({
+    bool enableLogs = false,
+  }) {
+    final player = Player(
+      configuration: PlayerConfiguration(
+        logLevel: enableLogs ? MPVLogLevel.debug : MPVLogLevel.no,
+      ),
+    );
+    return player;
+  }
+
+  /// Validate codec support
+  static bool isCodecSupported(String? codec) {
+    if (codec == null) return true; // Unknown codecs are attempted anyway
+
+    final supportedCodecs = {
+      'h264',
+      'hevc',
+      'h265',
+      'mpeg2video',
+      'mpeg1video',
+      'vp8',
+      'vp9',
+      'av1',
+    };
+
+    return supportedCodecs.contains(codec.toLowerCase());
+  }
+
+  /// Get player-specific error message
+  static String getPlayerErrorMessage(String error, PlayerType playerType) {
+    return switch (playerType) {
+      PlayerType.mediakit => _getMediaKitError(error),
+      PlayerType.native => _getNativePlayerError(error),
+    };
+  }
+
+  static String _getMediaKitError(String error) {
+    if (error.contains('Network')) return 'Stream connection failed';
+    if (error.contains('Timeout')) return 'Stream took too long to load';
+    if (error.contains('Codec')) return 'Video codec not supported';
+    return 'Playback error: $error';
+  }
+
+  static String _getNativePlayerError(String error) {
+    if (error.contains('Network')) return 'Connection lost';
+    return 'Player error: $error';
+  }
+}

lib/features/iptv/screens/lite_player_screen.dart

@@ -11,7 +11,7 @@ import 'package:xtremflow/core/models/playlist_config.dart';
 import 'package:xtremflow/features/iptv/services/xtream_service_mobile.dart';
 import 'package:xtremflow/mobile/providers/mobile_settings_providers.dart';
 import 'package:xtremflow/core/theme/app_colors.dart';
-import 'package:xtremflow/mobile/features/iptv/screens/native_player_screen.dart';
+import 'package:xtremflow/features/iptv/screens/native_player_screen.dart';
 import 'package:xtremflow/features/iptv/models/xtream_models.dart' as xm;
 import 'package:xtremflow/mobile/widgets/tv_focusable.dart';
 

lib/features/iptv/screens/native_player_screen.dart

@@ -12,7 +12,7 @@ import 'package:xtremflow/core/models/playlist_config.dart';
 import 'package:xtremflow/features/iptv/services/xtream_service_mobile.dart';
 import 'package:xtremflow/mobile/providers/mobile_settings_providers.dart';
 import 'package:xtremflow/core/theme/app_colors.dart';
-import 'package:xtremflow/mobile/features/iptv/screens/lite_player_screen.dart';
+import 'package:xtremflow/features/iptv/screens/lite_player_screen.dart';
 import 'package:cached_network_image/cached_network_image.dart';
 import 'package:xtremflow/mobile/providers/mobile_xtream_providers.dart';
 

lib/features/iptv/widgets/mobile_live_tv_tab.dart

@@ -12,7 +12,7 @@ import '../../../../core/theme/app_colors.dart';
 import '../../../../core/api/dns_resolver.dart';
 import '../../../theme/mobile_theme.dart';
 import 'package:xtremflow/mobile/widgets/tv_focusable.dart';
-import 'package:xtremflow/mobile/features/iptv/screens/lite_player_screen.dart';
+import 'package:xtremflow/features/iptv/screens/lite_player_screen.dart';
 import 'package:flutter/services.dart';
 import '../../../../core/services/ip_service.dart';
 

lib/main.dart

@@ -4,21 +4,27 @@ import 'package:hive_flutter/hive_flutter.dart';
 import 'package:media_kit/media_kit.dart';
 import 'core/theme/app_theme.dart';
 import 'core/providers/theme_provider.dart';
-import 'mobile/features/iptv/screens/mobile_playlist_screen.dart';
-import 'mobile/features/iptv/screens/mobile_dashboard_screen.dart';
+import 'features/iptv/screens/mobile_playlist_screen.dart';
+import 'features/iptv/screens/mobile_dashboard_screen.dart';
 import 'core/models/playlist_config.dart';
 import 'core/database/hive_service.dart';
+import 'core/utils/startup_profiler.dart';
 
 /// Android-optimized entry point for XtremFlow IPTV
 /// No authentication - direct access to playlist selection
 void main() async {
+  StartupProfiler.start('app_init');
+
   WidgetsFlutterBinding.ensureInitialized();
+  StartupProfiler.mark('flutter_binding_init');
 
   // Initialize MediaKit (required for video playback)
   MediaKit.ensureInitialized();
+  StartupProfiler.mark('media_kit_init');
 
   // Initialize Hive (Centralized)
   await HiveService.init();
+  StartupProfiler.mark('hive_init');
 
   // CLEAR CACHE ON STARTUP (Requested by User)
   try {
@@ -28,6 +34,9 @@ void main() async {
   } catch (e) {
     debugPrint('XtremFlow: Failed to clear cache: $e');
   }
+  StartupProfiler.mark('cache_clear');
+
+  await StartupProfiler.reportAll();
 
   runApp(const ProviderScope(child: XtremFlowApp()));
 }