编辑代码

const winston = require('winston');
const path = require('path');

// 确保日志目录存在
const fs = require('fs');
const logDir = path.join(__dirname, '..', 'logs');
if (!fs.existsSync(logDir)) {
    fs.mkdirSync(logDir, { recursive: true });
}

// 创建logger实例
const logger = winston.createLogger({
    level: process.env.LOG_LEVEL || 'info',
    format: winston.format.combine(
        winston.format.timestamp({
            format: 'YYYY-MM-DD HH:mm:ss'
        }),
        winston.format.errors({ stack: true }),
        winston.format.json()
    ),
    defaultMeta: { service: 'wechat-token-manager' },
    transports: [
        // 错误日志文件
        new winston.transports.File({
            filename: path.join(logDir, 'error.log'),
            level: 'error',
            maxsize: 10 * 1024 * 1024, // 10MB
            maxFiles: 5
        }),
        // 所有日志文件
        new winston.transports.File({
            filename: path.join(logDir, 'combined.log'),
            maxsize: 10 * 1024 * 1024, // 10MB
            maxFiles: 5
        })
    ]
});

// 开发环境下同时输出到控制台
if (process.env.NODE_ENV !== 'production') {
    logger.add(new winston.transports.Console({
        format: winston.format.combine(
            winston.format.colorize(),
            winston.format.simple()
        )
    }));
}

module.exports = logger;