import winston from 'winston';
import path from 'path';
import { fileURLToPath } from 'url';
import { config } from '../config/index.js';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const logsDir = path.join(__dirname, '../../logs');

const logFormat = winston.format.combine(
  winston.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
  winston.format.errors({ stack: true }),
  winston.format.printf(({ timestamp, level, message, stack }) => {
    return `${timestamp} [${level.toUpperCase()}]: ${message}${stack ? '\n' + stack : ''}`;
  })
);

const transports: winston.transport[] = [
  new winston.transports.Console({
    format: winston.format.combine(
      winston.format.colorize(),
      logFormat
    ),
  }),
];

// 生产环境添加文件日志
if (config.env === 'production') {
  transports.push(
    new winston.transports.File({
      filename: path.join(logsDir, 'error.log'),
      level: 'error',
      format: logFormat,
    }),
    new winston.transports.File({
      filename: path.join(logsDir, 'combined.log'),
      format: logFormat,
    })
  );
}

export const logger = winston.createLogger({
  level: config.env === 'production' ? 'info' : 'debug',
  transports,
});