download method

Implementation

void download({
  required String savePath,
  ProgressCallback? onReceiveProgress,
  Success? success,
  Failure? failure,
  Completed? completed,
}) async {
  if (!(await _checkNetWork())) {
    return;
  }

  final url = _buildFinalUrl();

  try {
    _options?.method = _httpType.name;
    if (_headers.isNotEmpty) {
      _options?.headers = _headers;
    }
    if (_enableGlobalHeader) {
      _options?.headers ??= {};
      _options?.headers?.addAll(_rxNet.getHeaders());
    }

    // 准备请求体
    dynamic requestBody = _rawBody;
    if (_rawBody == null && _bodyParams.isNotEmpty) {
      if (_bodyType == RequestBodyType.formData) {
        requestBody = FormData.fromMap(_bodyParams);
      } else if (_bodyType == RequestBodyType.json) {
        requestBody = _bodyParams;
      }
    }

    final response = await _rxNet.client!.download(
        url,
        savePath,
        onReceiveProgress: (received, total) {
          if (total != -1) {
            onReceiveProgress?.call(received, total);
          }
          if (received >= total) {
            success?.call(savePath, SourcesType.net);
          }
        },
        queryParameters: _queryParams,
        data: requestBody,
        options: _options,
        cancelToken: _cancelToken
    );

    onResponse?.call(response);
    if (response.statusCode != 200) {
      failure?.call(response.data);
    }
  } catch (e) {
    failure?.call(e);
  }
  completed?.call();
}