feat: Implement Xtream IPTV API service, including data fetching, caching, and proxy integration.

bin/api/proxy_handler.dart

@@ -123,6 +123,7 @@ class ProxyHandler {
           'User-Agent': 'VLC/3.0.18 LibVLC/3.0.18',
           'Accept': '*/*',
           'Accept-Encoding': 'identity',
+          'Connection': 'close', // Forced close for better IPTV server compatibility
         };
 
         // Forward Range header if present
@@ -158,21 +159,7 @@ class ProxyHandler {
             }
           }
 
-          // Special case for API requests (JSON list of channels etc.)
-          // If it's not a Range request and looks like JSON, read it fully
-          final isJson =
-              response.headers['content-type']?.contains('json') == true;
-          final isRange = request.headers.containsKey('range');
-
-          if (isJson && !isRange) {
-            final bytes = await response.stream.toBytes();
-            return Response(
-              response.statusCode,
-              body: bytes,
-              headers: responseHeaders,
-            );
-          }
-
+          // ALWAYS stream the response for maximum performance and to avoid memory issues with large JSONs
           return Response(
             response.statusCode,
             body: response.stream,

lib/features/iptv/providers/settings_provider.dart

@@ -19,9 +19,9 @@ enum BufferSize {
 
 /// Connection timeout presets
 enum ConnectionTimeout {
-  short, // 30 seconds
-  medium, // 60 seconds
-  long, // 120 seconds
+  short, // 60 seconds
+  medium, // 180 seconds
+  long, // 300 seconds
 }
 
 /// EPG cache duration presets
@@ -205,11 +205,11 @@ class IptvSettings {
   int get timeoutSeconds {
     switch (connectionTimeout) {
       case ConnectionTimeout.short:
-        return 30;
-      case ConnectionTimeout.medium:
         return 60;
+      case ConnectionTimeout.medium:
+        return 180;
       case ConnectionTimeout.long:
-        return 120;
+        return 300;
     }
   }
 

lib/features/iptv/services/xtream_service.dart

@@ -18,9 +18,9 @@ class XtreamService {
   XtreamService() {
     _dio = Dio(
       BaseOptions(
-        connectTimeout: const Duration(seconds: 60),
-        receiveTimeout: const Duration(seconds: 60),
-        sendTimeout: const Duration(seconds: 60),
+        connectTimeout: const Duration(seconds: 300),
+        receiveTimeout: const Duration(seconds: 300),
+        sendTimeout: const Duration(seconds: 300),
       ),
     );