toString method

@override String toString()

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string representation.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Implementation

@override
String toString() {
  DateFormat dateFormat = DateFormat('yyyy-MM-dd HH:mm:ss');
  DateTime start = this.start ?? DateTime.now();
  DateTime end = this.end ?? DateTime.now();
  final String startTimeFormatted = dateFormat.format(start);
  final String endTimeFormatted = dateFormat.format(end);
  final int duration = end.difference(start).inMilliseconds;

  String requestBody;
  try {
    if (request?.data == null) {
      requestBody = 'null';
    } else if (request?.data is String) {
      requestBody = request?.data as String;
    } else {
      requestBody = jsonEncode(request?.data);
    }
  } catch (e) {
    requestBody = request?.data.toString() ?? 'null';
  }

  String responseBody;
  try {
    if (response?.data == null) {
      responseBody = 'null';
    } else if (response?.data is String) {
      responseBody = response?.data as String;
    } else {
      responseBody = jsonEncode(response?.data);
    }
  } catch (e) {
    responseBody = response?.data.toString() ?? 'null';
  }

  String headersString;
  try {
    headersString = jsonEncode(request?.headers);
  } catch (e) {
    headersString = request?.headers.toString() ?? 'null';
  }

  String logAPI =
      '''\n
$startTimeFormatted: Request API
URL: ${request?.baseUrl}${request?.path}
Method: ${request?.method}
Headers: $headersString
Body: $requestBody
Start Time: $startTimeFormatted
End Time: $endTimeFormatted
Duration: $duration ms
Response Code: ${response?.statusCode ?? -1}
Response Message: ${response?.statusMessage ?? error?.message ?? 'No message'}
Response Body: $responseBody
''';
  return logAPI;
}