fluffychat/lib/utils/matrix_file_extension.dart

import 'dart:io';

import 'package:famedlysdk/famedlysdk.dart';
import 'package:fluffychat/components/matrix.dart';
import 'package:flutter/foundation.dart';
import 'package:open_file/open_file.dart';
import 'package:path_provider/path_provider.dart';
import 'package:system/system.dart';
import 'package:universal_html/prefer_universal/html.dart' as html;
import 'package:mime_type/mime_type.dart';

extension MatrixFileExtension on MatrixFile {
  void open() async {
    if (kIsWeb) {
      final fileName = path.split('/').last;
      final mimeType = mime(fileName);
      var element = html.document.createElement('a');
      element.setAttribute(
          'href', html.Url.createObjectUrlFromBlob(html.Blob([bytes])));
      element.setAttribute('target', "_blank");
      element.setAttribute('rel', "noopener");
      element.setAttribute('download', fileName);
      element.setAttribute('type', mimeType);
      element.style.display = 'none';
      html.document.body.append(element);
      element.click();
      element.remove();
    } else if (Matrix.isMobile) {
      Directory tempDir = await getTemporaryDirectory();
      final file = File(tempDir.path + "/" + path.split("/").last);
      file.writeAsBytesSync(bytes);
      await OpenFile.open(file.path);
    } else if (Platform.isLinux) {
      final directory = Directory('Downloads');
      if (await directory.exists() == false) {
        await directory.create();
      }
      final filePath = "${directory.path}/";
      final file = File(filePath + path.split("/").last);
      file.writeAsBytesSync(bytes);
      System.invoke('xdg-open $filePath');
    }
    return;
  }
}