/**
 * Simple logger for free-games-claimer
 */

const LOG_LEVELS = {
  trace: 0,
  debug: 1,
  info: 2,
  warn: 3,
  error: 4,
};

const currentLevel = process.env.LOG_LEVEL
  ? LOG_LEVELS[process.env.LOG_LEVEL.toLowerCase()]
  : LOG_LEVELS.info;

function formatMessage(level, module, message, data) {
  const timestamp = new Date().toISOString();
  const moduleStr = module ? `[${module}] ` : '';
  const dataStr = data && Object.keys(data).length > 0 ? ' ' + JSON.stringify(data) : '';
  return `${timestamp} ${level.toUpperCase().padEnd(5)} ${moduleStr}${message}${dataStr}`;
}

function createLogger(module) {
  return {
    trace: (dataOrMessage, message) => {
      if (currentLevel <= LOG_LEVELS.trace) {
        const [data, msg] = typeof dataOrMessage === 'string' ? [null, dataOrMessage] : [dataOrMessage, message];
        console.log(formatMessage('trace', module, msg || '', data));
      }
    },
    debug: (dataOrMessage, message) => {
      if (currentLevel <= LOG_LEVELS.debug) {
        const [data, msg] = typeof dataOrMessage === 'string' ? [null, dataOrMessage] : [dataOrMessage, message];
        console.log(formatMessage('debug', module, msg || '', data));
      }
    },
    info: (dataOrMessage, message) => {
      if (currentLevel <= LOG_LEVELS.info) {
        const [data, msg] = typeof dataOrMessage === 'string' ? [null, dataOrMessage] : [dataOrMessage, message];
        console.log(formatMessage('info', module, msg || '', data));
      }
    },
    warn: (dataOrMessage, message) => {
      if (currentLevel <= LOG_LEVELS.warn) {
        const [data, msg] = typeof dataOrMessage === 'string' ? [null, dataOrMessage] : [dataOrMessage, message];
        console.log(formatMessage('warn', module, msg || '', data));
      }
    },
    error: (dataOrMessage, message) => {
      if (currentLevel <= LOG_LEVELS.error) {
        const [data, msg] = typeof dataOrMessage === 'string' ? [null, dataOrMessage] : [dataOrMessage, message];
        console.log(formatMessage('error', module, msg || '', data));
      }
    },
    child: childData => {
      const childModule = childData?.module || module;
      return createLogger(childModule);
    },
  };
}

const logger = createLogger('root');
export default logger;