Initial commit: IT Nexus Web-App

backend/src/middleware/errorHandler.js

@@ -0,0 +1,67 @@
+/**
+ * Custom error class for application errors
+ */
+class AppError extends Error {
+    constructor(message, statusCode = 500, isOperational = true) {
+        super(message);
+        this.statusCode = statusCode;
+        this.isOperational = isOperational;
+        Error.captureStackTrace(this, this.constructor);
+    }
+}
+
+/**
+ * Global error handling middleware
+ */
+function errorHandler(err, req, res, next) {
+    let { statusCode = 500, message } = err;
+
+    // Log error for debugging
+    if (process.env.NODE_ENV === 'development') {
+        console.error('❌ Error:', err);
+    }
+
+    // Don't leak error details in production for operational errors
+    if (process.env.NODE_ENV === 'production' && !err.isOperational) {
+        message = 'Something went wrong';
+    }
+
+    // Prepare response
+    const response = {
+        status: 'error',
+        message
+    };
+
+    // Add stack trace in development
+    if (process.env.NODE_ENV === 'development') {
+        response.stack = err.stack;
+    }
+
+    res.status(statusCode).json(response);
+}
+
+/**
+ * Handle 404 errors
+ */
+function notFoundHandler(req, res, next) {
+    res.status(404).json({
+        status: 'error',
+        message: 'Route not found'
+    });
+}
+
+/**
+ * Async wrapper to catch errors in async route handlers
+ */
+function asyncHandler(fn) {
+    return (req, res, next) => {
+        Promise.resolve(fn(req, res, next)).catch(next);
+    };
+}
+
+module.exports = {
+    AppError,
+    errorHandler,
+    notFoundHandler,
+    asyncHandler
+};