const winston = require('winston');
const winstonDaily = require('winston-daily-rotate-file');
const process = require('process');

const { combine, timestamp, label, printf } = winston.format;

const logDir = `${process.cwd()}/logs`;

const logFormat = printf(({ level, message, label, timestamp }) => {
    return `${timestamp} [${label}] ${level}: ${message}`;
});

const logger = winston.createLogger({
    format: combine(
        timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
        label({ label: 'error 테스트: ' }),
        logFormat
    ),
    transports: [
        new winstonDaily({
            level: 'error',
            datePattern: 'YYYY-MM-DD',
            dirname: logDir,
            filename: `%DATE%.error.log`,
            maxFiles: 15, // 15일이후 삭제
        }),
    ],
    exceptionHandlers: [
        new winstonDaily({
            level: 'error',
            datePattern: 'YYYY-MM-DD',
            dirname: logDir,
            filename: `%DATE%.exception.log`,
            maxFiles: 15, // 15일이후 삭제
        }),
    ],
});

module.exports = logger;