Feat/add factory method for file info and matrix file

lib/src/utils/matrix_file.dart

@@ -68,6 +68,49 @@ class MatrixFile {
     return MatrixFile(bytes: bytes, name: name, mimeType: mimeType, filePath: filePath);
   }
 
+  factory MatrixFile.fromFileInfo(
+      {required FileInfo fileInfo}) {
+    final msgType = msgTypeFromMime(fileInfo.mimeType);
+    if (msgType == MessageTypes.Image) {
+      return MatrixImageFile(
+        name: fileInfo.fileName,
+        mimeType: fileInfo.mimeType,
+        filePath: fileInfo.filePath,
+        bytes: null,
+        width: (fileInfo.metadata['w'] as double?)?.toInt(),
+        height: (fileInfo.metadata['h'] as double?)?.toInt(),
+      );
+    }
+    if (msgType == MessageTypes.Video) {
+      return MatrixVideoFile(
+        bytes: fileInfo is VideoFileInfo 
+          ? fileInfo.imagePlaceholderBytes
+          : null,
+        name: fileInfo.fileName,
+        mimeType: fileInfo.mimeType,
+        filePath: fileInfo.filePath,
+        width: (fileInfo.metadata['w'] as double?)?.toInt(),
+        height: (fileInfo.metadata['h'] as double?)?.toInt(),
+        duration: fileInfo.metadata['duration'], 
+      );
+    }
+    if (msgType == MessageTypes.Audio) {
+      return MatrixAudioFile(
+        bytes: Uint8List.fromList([]),
+        name: fileInfo.fileName,
+        mimeType: fileInfo.mimeType,
+        filePath: fileInfo.filePath,
+        duration: fileInfo.metadata['duration'],
+      );
+    }
+    return MatrixFile(
+      bytes: null,
+      name: fileInfo.fileName,
+      mimeType: fileInfo.mimeType,
+      filePath: fileInfo.filePath,
+    );
+  }
+
   int get size => bytes?.length ?? 0;
 
   String get msgType {

lib/src/utils/models/file_info.dart

@@ -1,5 +1,8 @@
 
+import 'dart:typed_data';
+
 import 'package:equatable/equatable.dart';
+import 'package:matrix/matrix.dart';
 import 'package:mime/mime.dart';
 
 class FileInfo with EquatableMixin {
@@ -23,6 +26,34 @@ class FileInfo with EquatableMixin {
         'mimetype': mimeType,
         'size': fileSize,
       });
+
+
+  factory FileInfo.fromMatrixFile(MatrixFile file) {
+    if (file.msgType == MessageTypes.Image) {
+      return ImageFileInfo(
+        file.name,
+        file.filePath ?? '',
+        file.size,
+        width: file.info['w'],
+        height: file.info['h'],
+      );
+    } else if (file.msgType == MessageTypes.Video) {
+      return VideoFileInfo(
+        file.name,
+        file.filePath ?? '',
+        file.size,
+        imagePlaceholderBytes: file.bytes ?? Uint8List(0),
+        width: file.info['w'],
+        height: file.info['h'],
+        duration: Duration(milliseconds: file.info['duration']),
+      );
+    }
+    return FileInfo(
+      file.name,
+      file.filePath ?? '',
+      file.size
+    );
+  }
 
   @override
   List<Object?> get props => [fileName, filePath, fileSize, readStream];