server.js

require('dotenv').config();
const express = require('express');
const mongoose = require('mongoose');
const cors = require('cors');
const helmet = require('helmet');
const rateLimit = require('express-rate-limit');
const Redis = require('redis');
require('./utils/redis');

const app = express();

// Middleware
app.use(express.json());
app.use(cors());
app.use(helmet());

// Rate limiting
const limiter = rateLimit({
    windowMs: 15 * 60 * 1000, // 15 minutes
    max: 100 // limit each IP to 100 requests per windowMs
});
app.use(limiter);

// Redis client setup
const redisClient = Redis.createClient({
    url: process.env.REDIS_URL
});

redisClient.on('error', (err) => console.log('Redis Client Error', err));
app.get('/redis-status', async (req, res) => {
  try {
    await redisClient.ping();
    res.json({ status: 'connected' });
  } catch (err) {
    res.status(500).json({ status: 'error', error: err.message });
  }
});

// MongoDB connection
mongoose.connect(process.env.MONGODB_URI)
    .then(() => console.log('Connected to MongoDB'))
    .catch(err => console.error('MongoDB connection error:', err));

// Routes
app.use('/api/auth', require('./routes/auth'));
app.use('/api/properties', require('./routes/properties'));
app.use('/api/favorites', require('./routes/favorites'));
app.use('/api/recommendations', require('./routes/recommendations'));

// Error handling middleware
app.use((err, req, res, next) => {
    console.error(err.stack);
    res.status(500).json({ message: 'Something went wrong!' });
});

const PORT = process.env.PORT;
app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
});