// Logger utility using Winston

import winston from 'winston';
import { config } from '../config';

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

export const logger = winston.createLogger({
  level: config.logLevel,
  format: logFormat,
  transports: [
    new winston.transports.Console({
      format: winston.format.combine(
        winston.format.colorize(),
        logFormat
      )
    })
  ]
});

// Add file transport in production
if (!config.isDevelopment) {
  logger.add(new winston.transports.File({
    filename: 'error.log',
    level: 'error'
  }));
  logger.add(new winston.transports.File({
    filename: 'combined.log'
  }));
}