generateShareLink method

Implementation

@override
Future<Uri?> generateShareLink(String path) {
  return _executeRequest(() async {
    final normalizedPath = _normalizePath(path);
    debugPrint('Generating sharable link for Dropbox path: $normalizedPath');
    try {
      // Attempt to create a new public, editable share link.
      final response = await _dio.post(
        'https://api.dropboxapi.com/2/sharing/create_shared_link_with_settings',
        data: jsonEncode({
          'path': normalizedPath,
          'settings': {'requested_visibility': 'public', 'access': 'editor'}
        }),
        options: Options(contentType: 'application/json'),
      );
      final url = response.data['url'];
      debugPrint('Created sharable link: $url');
      return url == null ? null : Uri.parse(url);
    } on DioException catch (e) {
      // If a link already exists, fetch the existing one.
      if (e.response?.data?['error_summary']
              ?.contains('shared_link_already_exists') ==
          true) {
        debugPrint(
            'Share link already exists for $normalizedPath, fetching existing one.');
        final listResponse = await _dio.post(
          'https://api.dropboxapi.com/2/sharing/list_shared_links',
          data: jsonEncode({'path': normalizedPath, 'direct_only': true}),
          options: Options(contentType: 'application/json'),
        );
        final links = listResponse.data['links'] as List?;
        if (links != null && links.isNotEmpty) {
          final url = links.first['url'];
          debugPrint('Fetched existing sharable link: $url');
          return url == null ? null : Uri.parse(url);
        }
      }
      rethrow;
    }
  });
}