feat: video download

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/plugin/pl_player/models/data_source.dart

@@ -1,54 +1,37 @@
-import 'dart:io';
-
 /// The way in which the video was originally loaded.
 ///
 /// This has nothing to do with the video's file type. It's just the place
 /// from which the video is fetched from.
 enum DataSourceType {
-  /// The video was included in the app's asset files.
-  asset,
-
   /// The video was downloaded from the internet.
   network,
 
   /// The video was loaded off of the local filesystem.
   file,
-
-  /// The video is available via contentUri. Android only.
-  contentUri,
 }
 
 class DataSource {
-  File? file;
   String? videoSource;
   String? audioSource;
-  String? subFiles;
   DataSourceType type;
   Map<String, String>? httpHeaders; // for headers
+
   DataSource({
-    this.file,
     this.videoSource,
     this.audioSource,
-    this.subFiles,
     required this.type,
     this.httpHeaders,
-  }) : assert(
-         (type == DataSourceType.file && file != null) || videoSource != null,
-       );
+  });
 
   DataSource copyWith({
-    File? file,
     String? videoSource,
     String? audioSource,
-    String? subFiles,
     DataSourceType? type,
     Map<String, String>? httpHeaders,
   }) {
     return DataSource(
-      file: file ?? this.file,
       videoSource: videoSource ?? this.videoSource,
       audioSource: audioSource ?? this.audioSource,
-      subFiles: subFiles ?? this.subFiles,
       type: type ?? this.type,
       httpHeaders: httpHeaders ?? this.httpHeaders,
     );