const winston = require('winston');

// 定义日志格式
const logger = winston.createLogger({
  level: process.env.NODE_ENV === 'development' ? 'debug' : 'info',
  format: winston.format.combine(
    winston.format.timestamp({
      format: 'YYYY-MM-DD HH:mm:ss',
    }),
    winston.format.errors({ stack: true }),
    winston.format.splat(),
    winston.format.json()
  ),
  defaultMeta: { service: 'prompt-manager-api' },
  transports: [
    new winston.transports.Console({
      format: winston.format.combine(
        winston.format.colorize(),
        winston.format.printf(
          (info) => `${info.timestamp} ${info.level}: ${info.message}`
        )
      ),
    }),
  ],
});

// 如果是生产环境，记录到文件
if (process.env.NODE_ENV === 'production') {
  logger.add(
    new winston.transports.File({ filename: 'logs/error.log', level: 'error' })
  );
  logger.add(new winston.transports.File({ filename: 'logs/combined.log' }));
}

module.exports = logger;