getDirectoryPermission method

Future<bool?> getDirectoryPermission({ bool grantWritePermission = true, bool isDynamic = false, })

Request the user for access to Directory Permission, if access hasn't already been grant access before.

Returns bool.

Implementation

Future<bool?> getDirectoryPermission(
    {bool grantWritePermission = true, bool isDynamic = false}) async {
  try {
    /// Check if user has already Permission Granted
    var isGranted = await isPersistedPermissionDirectoryFor(_uriString);
    if (isGranted != null && isGranted) return true;

    const kOpenDocumentTree = 'openDocumentTree';
    const kGrantWritePermission = 'grantWritePermission';
    const kInitialUri = 'initialUri';

    /// Initial location of native file explorer
    /// when user is prompted to chose the directory
    String initialUri = makeUriString(path: _directory);

    final args = <String, dynamic>{
      kGrantWritePermission: grantWritePermission,
      kInitialUri: initialUri
    };

    /// Get the URI of user selected Directory path
    final selectedDirectoryUri = await kDocumentFileChannel
        .invokeMethod<String?>(kOpenDocumentTree, args);
    if (isDynamic) {
      _uriString = selectedDirectoryUri;
      _directory = makeDirectoryPath(_uriString!);
    }
    if (!isDynamic && selectedDirectoryUri != _uriString) {
      releasePersistableUriPermission(selectedDirectoryUri);
      return false;
    }

    return true;
  } catch (e) {
    return null;
  }
}