const winston = require('winston');
const path = require('path');
const { combine, timestamp, label, json } = winston.format;

// Log rotation configuration
const { createLogger, transports } = winston;
const { File } = transports;
const filename = (new Date()).toISOString().slice(0, 19).replace(/[-T]/g, '_');
const appLogRotate = new File({
  filename: path.join(__dirname, `../logs/${filename}.log`),
  level: 'info',
  maxsize: 1000000,
  maxFiles: 5,
  tailable: true,
});

// Winston logger configuration
const appLogger = createLogger({
  format: combine(
    label({ label: 'App' }),
    timestamp(),
    json()
  ),
  transports: [
    new winston.transports.Console(),
    appLogRotate
  ]
});

module.exports = appLogger;