Logger constructor

Logger(EnvContract _env)

Implementation

Logger(this._env) {
  final level = _env.get(AppEnv.logLevel);
  final dartEnv = _env.get(AppEnv.dartEnv);

  final bool logLevel = LogLevel.values
      .map((level) => level.name)
      .contains(level.toUpperCase());
  if (!logLevel) {
    throw Exception(
        'Invalid LOG_LEVEL environment variable, please include in ${LogLevel.values.map((level) => level.name.toLowerCase())}');
  }

  logging.Logger.root.level = LogLevel.values
      .firstWhere((element) => element.name == level.toUpperCase())
      .value;
  logging.Logger.root.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(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 (stdout.supportsAnsiEscapes) {
      stdout.writeAnsiAll(message);
      return;
    }

    message.writeWithoutAnsi();
  });
}