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* This is the main backend entry file.
* It serves as the parent file that connects all backend routes and middleware.
*/
require('dotenv').config();
const express = require('express');
const mongoose = require('mongoose');
const dotenv = require('dotenv');
const cors = require('cors');
const { createClient } = require('redis');
const userRoutes = require('./Routes/userRoutes');
const hostRoutes = require('./Routes/hostRoutes');
const rateLimit = require('express-rate-limit');
const winston = require('winston');
const swaggerUi = require('swagger-ui-express');
const swaggerJsdoc = require('swagger-jsdoc');
const institutionRoutes = require('./Routes/institutionRoutes');
const eventRoutes = require('./Routes/eventRoutes');
const certificateRoutes = require('./Routes/certificateRoutes');
const recommendationRoutes = require('./Routes/recommendationRoutes');
const errorHandler = require('./Middleware/errorHandler');
const app = express();
console.log('MONGO_URI:', process.env.MONGO_URI);
console.log('REDIS_URL:', process.env.REDIS_URL);
// Winston logger setup
const logger = winston.createLogger({
level: 'info',
format: winston.format.json(),
transports: [
new winston.transports.Console(),
// Add file or remote transports for production
],
});
// Rate limiting for auth endpoints
const authLimiter = rateLimit({
windowMs: 15 * 60 * 1000, // 15 minutes
max: 10, // limit each IP to 10 requests per windowMs
message: 'Too many requests, please try again later.'
});
// Swagger setup
const swaggerOptions = {
definition: {
openapi: '3.0.0',
info: {
title: 'CampVerse API',
version: '1.0.0',
},
},
apis: ['./Routes/*.js'],
};
const swaggerSpec = swaggerJsdoc(swaggerOptions);
app.use('/api-docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec));
app.get('/api-docs.json', (req, res) => {
res.setHeader('Content-Type', 'application/json');
res.send(swaggerSpec);
});
// Enable CORS for local frontend development
app.use(cors({
origin: [
'http://localhost:3000', // React default
'http://localhost:5173', // Vite default
'http://127.0.0.1:3000',
'http://127.0.0.1:5173'
],
credentials: true
}));
app.use(express.json());
// Connect Redis client
const redisClient = createClient({
url: process.env.REDIS_URL || 'redis://127.0.0.1:6379'
});
redisClient.on('error', (err) => console.error('Redis Client Error', err));
(async () => {
try {
await redisClient.connect();
console.log('Redis connected');
} catch (err) {
console.error('Redis connection failed', err);
}
})();
// Make redisClient available in req object via middleware (optional)
app.use((req, res, next) => {
req.redisClient = redisClient;
next();
});
// Health check endpoint for Docker and CI/CD
app.get('/health', (req, res) => {
res.status(200).json({
status: 'OK',
timestamp: new Date().toISOString(),
uptime: process.uptime(),
environment: process.env.NODE_ENV || 'development'
});
});
// Validate required environment variables
['JWT_SECRET','EMAIL_USER','EMAIL_PASSWORD'].forEach((key) => {
Iif (!process.env[key]) {
console.error(`Missing required environment variable: ${key}`);
process.exit(1);
}
});
// Routes
app.use('/api/users', userRoutes);
app.use('/api/hosts', hostRoutes);
app.use('/api/institutions', institutionRoutes);
app.use('/api/events', eventRoutes);
app.use('/api/certificates', certificateRoutes);
app.use('/api/recommendations', recommendationRoutes);
// Apply rate limiter to sensitive routes
app.use('/api/users/register', authLimiter);
app.use('/api/users/login', authLimiter);
app.use('/api/users/google-signin', authLimiter);
app.use('/api/users/verify', authLimiter);
// Centralized error handler (should be last)
app.use(errorHandler);
// Connect MongoDB and start server
mongoose.connect(process.env.MONGO_URI)
.then(() => {
console.log('MongoDB connected');
app.listen(5001, '0.0.0.0', () => {
console.log('Server is running on port 5001');
});
})
.catch((err) => {
console.error('Failed to connect to MongoDB', err);
});
console.log('MONGO_URI:', process.env.MONGO_URI);
console.log('REDIS_URL:', process.env.REDIS_URL);
// Export app for testing
module.exports = app;
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