feat: Implement streaming handlers for live MPEG-TS proxy and VOD HLS transcoding via FFmpeg, and add a release build script.

bin/api/streaming_handler.dart

@@ -5,13 +5,23 @@ import 'dart:math';
 import 'package:shelf/shelf.dart';
 import 'package:shelf_router/shelf_router.dart';
 import 'package:http/http.dart' as http;
-import '../../lib/core/models/playlist_config.dart';
+import 'package:xtremflow/core/models/playlist_config.dart';
 
 /// Active FFmpeg processes for VOD transcoding
 final Map<String, Process> _vodProcesses = {};
 
 /// Directory for temporary HLS segments
-final Directory _hlsTempDir = Directory('/tmp/hls_vod');
+final Directory _hlsTempDir = Directory('${Directory.systemTemp.path}/xtremflow_streams');
+
+/// Helper to resolve FFmpeg path (SYSTEM PATH vs Portable)
+String _getFFmpegPath() {
+  if (Platform.isWindows) {
+    if (File('ffmpeg.exe').existsSync()) return 'ffmpeg.exe';
+    if (File('bin/ffmpeg.exe').existsSync()) return 'bin/ffmpeg.exe';
+    if (File('ffmpeg/bin/ffmpeg.exe').existsSync()) return 'ffmpeg/bin/ffmpeg.exe';
+  }
+  return 'ffmpeg'; // Default to PATH
+}
 
 /// Initialize streaming subsystem
 Future<void> initStreaming() async {
@@ -76,11 +86,12 @@ Handler createLiveStreamHandler(Future<PlaylistConfig?> Function(Request) getPla
       
       '-c', 'copy', // Direct stream copy (Very low CPU)
       '-f', 'mpegts',
-      'pipe:1' // Output to stdout
+      'pipe:1', // Output to stdout
     ];
 
     try {
-      final process = await Process.start('ffmpeg', ffmpegArgs);
+      final ffmpegPath = _getFFmpegPath();
+      final process = await Process.start(ffmpegPath, ffmpegArgs);
       
       // Cleanup handling: Kill FFmpeg when client disconnects
       final controller = StreamController<List<int>>(
@@ -100,7 +111,7 @@ Handler createLiveStreamHandler(Future<PlaylistConfig?> Function(Request) getPla
         onError: (e) {
            print('[Live] FFmpeg stream error: $e');
            controller.addError(e);
-        }
+        },
       );
       
       // Log errors
@@ -257,10 +268,11 @@ Handler createVodStreamHandler(Future<PlaylistConfig?> Function(Request) getPlay
       '-start_number', '0',
       
       // Write playlist to stdout or file? File is easier for static serving
-      '${streamDir.path}/playlist.m3u8'
+      '${streamDir.path}/playlist.m3u8',
     ];
 
-      Process.start('ffmpeg', ffmpegArgs).then((process) {
+       final ffmpegPath = _getFFmpegPath();
+       Process.start(ffmpegPath, ffmpegArgs).then((process) {
         _vodProcesses[streamId] = process;
         
         process.stderr.transform(utf8.decoder).listen((data) {

bin/database/database.dart

@@ -12,8 +12,8 @@ class AppDatabase {
 
   /// Initialize database and create tables
   Future<void> init() async {
-    final dbPath = '/app/data/xtremflow.db';
-    
+    const dbPath = '/app/data/xtremflow.db';
+
     // Ensure data directory exists
     final dir = Directory('/app/data');
     if (!await dir.exists()) {
@@ -21,7 +21,7 @@ class AppDatabase {
     }
 
     _db = sqlite3.open(dbPath);
-    
+
     await _createTables();
     print('Database initialized: $dbPath');
   }
@@ -79,9 +79,12 @@ class AppDatabase {
     ''');
 
     // Indexes
-    _db.execute('CREATE INDEX IF NOT EXISTS idx_sessions_token ON sessions(token)');
-    _db.execute('CREATE INDEX IF NOT EXISTS idx_sessions_expires ON sessions(expires_at)');
-    _db.execute('CREATE INDEX IF NOT EXISTS idx_playlists_user ON playlists(user_id)');
+    _db.execute(
+        'CREATE INDEX IF NOT EXISTS idx_sessions_token ON sessions(token)');
+    _db.execute(
+        'CREATE INDEX IF NOT EXISTS idx_sessions_expires ON sessions(expires_at)');
+    _db.execute(
+        'CREATE INDEX IF NOT EXISTS idx_playlists_user ON playlists(user_id)');
   }
 
   /// Seed default admin user if no users exist
@@ -93,10 +96,13 @@ class AppDatabase {
       final adminId = _uuid.v4();
       final passwordHash = PasswordHasher.hash('admin');
 
-      _db.execute('''
+      _db.execute(
+        '''
         INSERT INTO users (id, username, password_hash, is_admin)
         VALUES (?, ?, ?, 1)
-      ''', [adminId, 'admin', passwordHash],);
+      ''',
+        [adminId, 'admin', passwordHash],
+      );
 
       print('Default admin user created (username: admin, password: admin)');
     }
@@ -148,10 +154,13 @@ class AppDatabase {
     final userId = _uuid.v4();
     final passwordHash = PasswordHasher.hash(password);
 
-    _db.execute('''
+    _db.execute(
+      '''
       INSERT INTO users (id, username, password_hash, is_admin)
       VALUES (?, ?, ?, ?)
-    ''', [userId, username, passwordHash, isAdmin ? 1 : 0],);
+    ''',
+      [userId, username, passwordHash, isAdmin ? 1 : 0],
+    );
 
     return User(
       id: userId,
@@ -197,10 +206,13 @@ class AppDatabase {
     final token = _uuid.v4();
     final expiresAt = DateTime.now().add(duration ?? const Duration(days: 7));
 
-    _db.execute('''
+    _db.execute(
+      '''
       INSERT INTO sessions (id, user_id, token, expires_at)
       VALUES (?, ?, ?, ?)
-    ''', [sessionId, userId, token, expiresAt.toIso8601String()],);
+    ''',
+      [sessionId, userId, token, expiresAt.toIso8601String()],
+    );
 
     return models.Session(
       id: sessionId,
@@ -221,7 +233,7 @@ class AppDatabase {
     if (result.isEmpty) return null;
 
     final session = models.Session.fromMap(result.first);
-    
+
     // Check if expired
     if (session.isExpired) {
       deleteSession(token);
@@ -279,10 +291,13 @@ class AppDatabase {
     final playlistId = _uuid.v4();
     final now = DateTime.now().toIso8601String();
 
-    _db.execute('''
+    _db.execute(
+      '''
       INSERT INTO playlists (id, user_id, name, server_url, username, password, dns, created_at, updated_at)
       VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
-    ''', [playlistId, userId, name, serverUrl, username, password, dns, now, now],);
+    ''',
+      [playlistId, userId, name, serverUrl, username, password, dns, now, now],
+    );
 
     return Playlist(
       id: playlistId,
@@ -308,11 +323,14 @@ class AppDatabase {
   }) {
     final now = DateTime.now().toIso8601String();
 
-    _db.execute('''
+    _db.execute(
+      '''
       UPDATE playlists 
       SET name = ?, server_url = ?, username = ?, password = ?, dns = ?, updated_at = ?
       WHERE id = ?
-    ''', [name, serverUrl, username, password, dns, now, playlistId],);
+    ''',
+      [name, serverUrl, username, password, dns, now, playlistId],
+    );
 
     return getPlaylistById(playlistId)!;
   }
@@ -338,15 +356,18 @@ class AppDatabase {
   /// Update user settings
   void updateUserSettings(String userId, String settingsJson) {
     final now = DateTime.now().toIso8601String();
-    
+
     // UPSERT (Insert or Replace)
-    _db.execute('''
+    _db.execute(
+      '''
       INSERT INTO user_settings (user_id, settings_json, updated_at)
       VALUES (?, ?, ?)
       ON CONFLICT(user_id) DO UPDATE SET
         settings_json = excluded.settings_json,
         updated_at = excluded.updated_at
-    ''', [userId, settingsJson, now]);
+    ''',
+      [userId, settingsJson, now],
+    );
   }
 
   /// Close database connection

bin/server.dart

@@ -10,7 +10,7 @@ import 'package:args/args.dart';
 import 'database/database.dart';
 import 'models/user.dart';
 import 'models/playlist.dart';
-import '../lib/core/models/playlist_config.dart';
+import 'package:xtremflow/core/models/playlist_config.dart';
 import 'api/auth_handler.dart';
 import 'api/users_handler.dart';
 import 'api/playlists_handler.dart';
@@ -49,17 +49,17 @@ void main(List<String> args) async {
     // Auth endpoints
     ..mount('/api/auth', authHandler.router)
     // Playlists endpoints
-    ..mount('/api/playlists', Pipeline()
+    ..mount('/api/playlists', const Pipeline()
       .addMiddleware(authMiddleware(db))
-      .addHandler(playlistsHandler.router.call))
+      .addHandler(playlistsHandler.router.call),)
     // Users endpoints
-    ..mount('/api/users', Pipeline()
+    ..mount('/api/users', const Pipeline()
       .addMiddleware(authMiddleware(db))
-      .addHandler(usersHandler.router.call))
+      .addHandler(usersHandler.router.call),)
     // Settings endpoints
-    ..mount('/api/settings', Pipeline()
+    ..mount('/api/settings', const Pipeline()
       .addMiddleware(authMiddleware(db))
-      .addHandler(settingsHandler.router.call));
+      .addHandler(settingsHandler.router.call),);
 
   // Initialize Cleanup Service
   final cleanupService = CleanupService();
@@ -70,7 +70,7 @@ void main(List<String> args) async {
   cleanupService.start();
 
   // Admin Routes (protected)
-  apiRouter.mount('/api/admin', Pipeline()
+  apiRouter.mount('/api/admin', const Pipeline()
       .addMiddleware(authMiddleware(db))
       .addHandler((Request request) {
         final router = Router();
@@ -90,7 +90,7 @@ void main(List<String> args) async {
         });
         
         return router(request);
-      }));
+      }),);
 
   // Create static handler
   final baseStaticHandler = createStaticHandler(
@@ -100,7 +100,7 @@ void main(List<String> args) async {
   );
 
   // Wrap static handler to enforce cache policies
-  Handler staticHandler = (Request request) async {
+  FutureOr<Response> staticHandler(Request request) async {
     final response = await baseStaticHandler(request);
     
     // Disable cache for entry points to ensure updates are seen immediately
@@ -113,17 +113,17 @@ void main(List<String> args) async {
         'Cache-Control': 'no-store, no-cache, must-revalidate, max-age=0',
         'Pragma': 'no-cache',
         'Expires': '0',
-      });
+      },);
     }
     
     // Allow aggressive caching for hashed assets
     return response.change(headers: {
       'Cache-Control': 'public, max-age=86400', 
-    });
-  };
+    },);
+  }
 
   // Helper to get playlist from request
-  Future<PlaylistConfig?> _getPlaylist(Request request) async {
+  Future<PlaylistConfig?> getPlaylist(Request request) async {
      Playlist? playlist;
      
      final user = request.context['user'] as User?;
@@ -155,8 +155,8 @@ void main(List<String> args) async {
 
   // Create Streaming Router (Mount handlers on correct paths)
   final streamingRouter = Router()
-    ..mount('/api/live', createLiveStreamHandler(_getPlaylist))
-    ..mount('/api/vod', createVodStreamHandler(_getPlaylist));
+    ..mount('/api/live', createLiveStreamHandler(getPlaylist))
+    ..mount('/api/vod', createVodStreamHandler(getPlaylist));
 
   // Main handler with API proxy and NEW Streaming Handlers
   final handler = Cascade()
@@ -167,7 +167,7 @@ void main(List<String> args) async {
     .handler;
 
   // Add middleware
-  final pipeline = Pipeline()
+  final pipeline = const Pipeline()
     .addMiddleware(logRequests())
     .addMiddleware(securityHeadersMiddleware())
     .addMiddleware(honeypotMiddleware())