light-ning/src/logger.js

export default (req, res) => {
  const status = res.statusCode;
  let statusCode;

  const paint = (word, color) => {
    word = word.toString();

    switch (color) {
      case 'red':  return `\u001b[31m${word}\u001b[39m`;
      case 'green': return `\u001b[32m${word}\u001b[39m`;
      case 'cyan':  return `\u001b[36m${word}\u001b[39m`;
      case 'magenta':  return `\u001b[35m${word}\u001b[39m`;
      case 'bold':  return `\u001b[1m${word}\u001b[22m`;
      case 'bgWhite':  return `\u001b[47m${word}\u001b[49m`;
      case 'black':  return `\u001b[30m${word}\u001b[39m`;
    }
  };

  if (status >= 200 && status <= 226) statusCode = paint(status, 'green');
  if (status >= 300 && status <= 307) statusCode = paint(status, 'cyan');
  if (status >= 400 && status <= 451) statusCode = paint(status, 'red');
  if (status >= 500 && status <= 511) statusCode = paint(status, 'red');

  if (req.method.length === 3) {
    console.info(
      paint(' ', 'magenta') + paint(paint(req.method, 'bold'), 'magenta') + paint('\u0020\u0020\u0020 ', 'magenta') + paint(statusCode, 'bold') + ' ' + paint(' ', 'bgWhite') + paint(paint(req.url, 'black'), 'bgWhite') + paint(' ', 'bgWhite')
    );
  } else if (req.method.length === 4) {
    console.info(
      paint(' ', 'magenta') + paint(paint(req.method, 'bold'), 'magenta') + paint('\u0020\u0020 ', 'magenta') + paint(statusCode, 'bold') + ' ' + paint(' ', 'bgWhite') + paint(paint(req.url, 'black'), 'bgWhite') + paint(' ', 'bgWhite')
    );
  } else {
    console.info(
      paint(' ', 'magenta') + paint(paint(req.method, 'bold'), 'magenta') + paint(' ', 'magenta') + paint(statusCode, 'bold') + ' ' + paint(' ', 'bgWhite') + paint(paint(req.url, 'black'), 'bgWhite') + paint(' ', 'bgWhite')
    );
  }
};