// const winston = require('winston');
import winston from 'winston';
import path from 'path';
import DailyRotateFile from 'winston-daily-rotate-file';

export class Logger {
    constructor(log_folder) {
        this.log_folder = log_folder;
        this.logger = winston.createLogger({
            level: 'info',
            format: winston.format.combine(
                winston.format.timestamp(),
                winston.format.printf(info => `${info.timestamp}  [${info.level.toUpperCase()}]  [${info.service}]  ${info.message}`)
            ),
            transports: [
                new DailyRotateFile({
                    filename: path.resolve(this.log_folder, `LAITool-%DATE%.log`),
                    datePattern: 'YYYY-MM-DD',
                    zippedArchive: true,
                    maxSize: '10m',
                    maxFiles: '14d'
                })
            ],
        });

        if (process.env.NODE_ENV !== 'production') {
            this.logger.add(new winston.transports.Console({
                format: winston.format.simple(),
            }));
        }
    }

    /**
     * 保存info级别的日志
     * @param {*} service service 名称
     * @param {*} message 消息 
     */
    info(service, message) {
        this.logger.info(message, { service });
    }

    /**
     * 保存error级别的日志
     * @param {*} service service 名称
     * @param {*} message 消息
     */
    error(service, message) {
        this.logger.error(message, { service });
    }

    /**
     * 保存warn级别的日志
     * @param {*} service service 名称
     * @param {*} message 消息
     */
    warn(service, message) {
        this.logger.warn(message, { service });
    }
}