backend/src/middleware/error.middleware.js


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const env = require('../config/env');

/**
 * Not found error handler middleware
 * @param {Object} req - Express request object
 * @param {Object} res - Express response object
 * @param {Function} next - Express next function
 */
const notFound = (req, res, next) => {
  const error = new Error(`Not Found - ${req.originalUrl}`);
  res.status(404);
  next(error);
};

/**
 * General error handler middleware
 * @param {Error} err - Error object
 * @param {Object} req - Express request object
 * @param {Object} res - Express response object
 * @param {Function} next - Express next function
 */
const errorHandler = (err, req, res, next) => {
  // Log the error
  console.error(err.stack);
  
  // Set status code
  const statusCode = res.statusCode === 200 ? 500 : res.statusCode;
  
  // Send response
  res.status(statusCode).json({
    message: err.message,
    stack: env.NODE_ENV === 'production' ? '🥞' : err.stack,
    error: env.NODE_ENV === 'development' ? err : {}
  });
};

module.exports = {
  notFound,
  errorHandler
};