downloadFile method

Implementation

Future<dynamic> downloadFile({
  required String url,
  Function(double progress)? onProgress,
}) async {
  try {
    // Determine the download directory based on the platform
    final Directory? downloadsDir;
    if (Platform.isAndroid) {
      downloadsDir = Directory("/storage/emulated/0/Download");
    } else {
      downloadsDir = await getApplicationDocumentsDirectory();
    }

    // Create a subdirectory for the app's files
    final Directory appDir = Directory("${downloadsDir.path}/myApp");
    if (!await appDir.exists()) {
      await appDir.create(recursive: true);
    }

    // Generate the file path
    final String fileName = url.split('/').last;
    final String filePath = "${appDir.path}/$fileName";

    // Download file using Dio
    await _dio.download(
      url,
      filePath,
      options: Options(
        headers: {
          "Content-Type": "*/*",
          "Accept": "*/*",
        },
      ),
      onReceiveProgress: (received, total) {
        if (total != -1 && onProgress != null) {
          // Calculate and pass progress percentage
          onProgress((received / total) * 100);
        }
      },
    );

    // Return success response
    return filePath;
  } catch (e) {
    rethrow;
  }
}