const winston = require('winston');
const moment = require('moment-timezone');

// 自定义时间戳格式化函数，转换为北京时间
const timestampInBeijing = winston.format((info) => {
  info.timestamp = moment().tz('Asia/Shanghai').format('YYYY-MM-DD HH:mm:ss');
  return info;
});

// 使用 printf 格式化日志输出
const myFormat = winston.format.printf(({ level, message, timestamp, meta }) => {
  //console.log(level, timestamp, meta); // 这行用来调试
  return `[${level.toUpperCase()}] ${timestamp} ${meta.ip} ${meta.path} ${meta.statusCode} ${message}`;
});

const logger = winston.createLogger({
  level: 'info',
  format: winston.format.combine(
    timestampInBeijing(), // 使用自定义时间戳格式化函数
    myFormat
  ),
  defaultMeta: { service: 'user-service' },
  transports: [
    new winston.transports.File({ filename: 'error.log', level: 'error' }),
    new winston.transports.File({ filename: 'combined.log' }),
  ],
});

if (process.env.NODE_ENV !== 'production') {
  logger.add(new winston.transports.Console({
    format: winston.format.combine(
      winston.format.colorize(),
      timestampInBeijing(), // 使用自定义时间戳格式化函
      myFormat
    ),
  }));
}

module.exports = logger;