Initial commit: CMS backend for Old Vine Hotel

- Complete Express.js API server
- MongoDB integration with Mongoose
- Admin authentication and authorization
- Room management (CRUD operations)
- Booking management system
- Guest management
- Payment processing (Stripe integration)
- Content management (pages, blog, gallery)
- Media upload and management
- Integration services (Booking.com, Expedia, Opera PMS, Trip.com)
- Email notifications
- Comprehensive logging and error handling

middleware/errorHandler.js

@@ -0,0 +1,76 @@
+const logger = require('../utils/logger');
+
+const errorHandler = (err, req, res, next) => {
+  let error = { ...err };
+  error.message = err.message;
+
+  // Log error
+  logger.logError(err, {
+    method: req.method,
+    url: req.originalUrl,
+    ip: req.ip,
+    userAgent: req.get('User-Agent')
+  });
+
+  // Mongoose bad ObjectId
+  if (err.name === 'CastError') {
+    const message = 'Invalid ID format';
+    error = {
+      message,
+      statusCode: 400
+    };
+  }
+
+  // Mongoose duplicate key
+  if (err.code === 11000) {
+    const field = Object.keys(err.keyValue)[0];
+    const message = `${field} already exists`;
+    error = {
+      message,
+      statusCode: 400
+    };
+  }
+
+  // Mongoose validation error
+  if (err.name === 'ValidationError') {
+    const message = Object.values(err.errors).map(val => val.message).join(', ');
+    error = {
+      message,
+      statusCode: 400
+    };
+  }
+
+  // JWT errors
+  if (err.name === 'JsonWebTokenError') {
+    const message = 'Invalid token';
+    error = {
+      message,
+      statusCode: 401
+    };
+  }
+
+  if (err.name === 'TokenExpiredError') {
+    const message = 'Token expired';
+    error = {
+      message,
+      statusCode: 401
+    };
+  }
+
+  // Stripe errors
+  if (err.type && err.type.startsWith('Stripe')) {
+    const message = 'Payment processing error';
+    error = {
+      message,
+      statusCode: 400
+    };
+  }
+
+  res.status(error.statusCode || 500).json({
+    success: false,
+    message: error.message || 'Server Error',
+    ...(process.env.NODE_ENV === 'development' && { stack: err.stack })
+  });
+};
+
+module.exports = errorHandler;