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

// Create logs directory if it doesn't exist
const logDir = 'logs';
if (!fs.existsSync(logDir)) {
  fs.mkdirSync(logDir);
}

// Define log format
const logFormat = winston.format.combine(
  winston.format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
  winston.format.printf(({ timestamp, level, message }) => {
    return `${timestamp} [${level.toUpperCase()}]: ${message}`;
  })
);

// Create logger
const logger = winston.createLogger({
  level: process.env.NODE_ENV === 'production' ? 'info' : 'debug',
  format: logFormat,
  transports: [
    // Console transport
    new winston.transports.Console({
      format: winston.format.combine(
        winston.format.colorize(),
        logFormat
      )
    }),
    // File transport for errors
    new winston.transports.File({
      filename: path.join(logDir, 'error.log'),
      level: 'error'
    }),
    // File transport for all logs
    new winston.transports.File({
      filename: path.join(logDir, 'combined.log')
    })
  ]
});

module.exports = logger;