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

const logConfiguration = {
    'transports': [
        new winston.transports.DailyRotateFile({
            filename: './logs/application-%DATE%.log',
            datePattern: 'YYYY-MM-DD', // new file is created every hour: 'YYYY-MM-DD-HH'
            zippedArchive: true,
            maxSize: '20m',
            maxFiles: '90d',
            level: 'info'
        })
    ],
    format: winston.format.combine(
        winston.format.timestamp({
            format: 'YYYY-MM-DD HH:mm:ss'
        }),
        winston.format.printf(info => `${info.timestamp} ${info.level}: ${info.message}`)
    )
};

const logger = winston.createLogger(logConfiguration);

module.exports = logger;