const winston = require('winston');

// Configure logging using winston
const logger = winston.createLogger({
  level: 'info',
  format: winston.format.combine(
    winston.format.timestamp(),
    winston.format.printf(({ timestamp, level, message }) => `${timestamp} - ${level.toUpperCase()}: ${message}`)
  ),
  transports: [
    new winston.transports.Console(),
    new winston.transports.File({ filename: 'app.log' })
  ]
});

// Main function to add two numbers and log the result
function addNumbers(a, b) {
  logger.info(`Function called with inputs: a=${a}, b=${b}`);

  const result = a + b;

  logger.info(`The result of adding ${a} and ${b} is: ${result}`);
  return result;
}

// Example usage
const num1 = 5;
const num2 = 8;
const sum = addNumbers(num1, num2);

console.log(`Sum: ${sum}`);