Logger constructor

Logger(LogLevel _logLevel, String _dartEnv, { String label = 'mineral', })

Implementation

Logger(this._logLevel, this._dartEnv, {String label = 'mineral'})
  : _label = label {
  _logger.level = _logLevel.level;

  _logger.onRecord.listen((record) {
    final time = DateFormat.Hms().format(record.time);

    List<Sequence> makeMessage(
      String messageType,
      Color messageColor,
      List<Sequence> message,
    ) {
      return [
        SetStyles(Style.foreground(Color.brightBlack)),
        Print(time),
        SetStyles.reset,
        Print(' '),
        SetStyles(Style.foreground(messageColor)),
        Print('[$_label]'),
        SetStyles.reset,
        Print(' '),
        SetStyles(Style.foreground(messageColor)),
        Print(messageType),
        SetStyles.reset,
        Print(': '),
        ...message,
        SetStyles.reset,
        AsciiControl.lineFeed,
      ];
    }

    final message = switch (record.level) {
      logging.Level.FINEST => makeMessage('trace', Color.white, [
        SetStyles(Style.foreground(Color.brightBlack)),
        Print(record.message),
      ]),
      logging.Level.SHOUT => makeMessage('fatal', Color.brightRed, [
        Print(record.message),
      ]),
      logging.Level.SEVERE => makeMessage('error', Color.red, [
        Print(record.message),
      ]),
      logging.Level.WARNING => makeMessage('warn', Color.yellow, [
        Print(record.message),
      ]),
      logging.Level.INFO => makeMessage(
        'info',
        Color.fromRGB(140, 169, 238),
        [Print(record.message)],
      ),
      _ => makeMessage('unknown', Color.blue, [Print(record.message)]),
    };

    if (_dartEnv == 'production') {
      message.writeWithoutAnsi();
      return;
    }

    if (_supportsColor) {
      stdout.writeAnsiAll(message);
      return;
    }

    message.writeWithoutAnsi();
  });
}