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const express = require('express');
const cors = require('cors');
const mongoose = require('mongoose');
const bcrypt = require('bcrypt');
const app = express();
const PORT = process.env.PORT || 5000;

app.use(cors());
app.use(express.json());

// MongoDB connection setup
mongoose.connect('mongodb://localhost:27017/brewery_reviews_db', {
    useNewUrlParser: true,
    useUnifiedTopology: true
});
const db = mongoose.connection;
db.on('error', console.error.bind(console, 'MongoDB connection error:'));
db.once('open', () => {
    console.log('Connected to MongoDB');
});

// Define schema and model for reviews
const reviewSchema = new mongoose.Schema({
    breweryId: String,
    rating: Number,
    description: String
});
const Review = mongoose.model('Review', reviewSchema);

// Define schema and model for users
const userSchema = new mongoose.Schema({
    name: {
        type: String,
        required: true
    },
    email: {
        type: String,
        required: true,
        unique: true
    },
    password: {
        type: String,
        required: true
    }
});
const User = mongoose.model('User', userSchema);

// API endpoint to save reviews
app.post('/api/reviews', async (req, res) => {
    try {
        const { breweryId, rating, description } = req.body;
        const newReview = new Review({ breweryId, rating, description });
        await newReview.save();
        res.status(201).json({ message: 'Review added successfully' });
    } catch (err) {
        console.error('Error adding review:', err);
        res.status(500).json({ error: 'Error adding review' });
    }
});

// API endpoint to register a new user
app.post('/api/signup', async (req, res) => {
    try {
        const { name, email, password } = req.body;
        // Check if user with the same email already exists
        const existingUser = await User.findOne({ email });
        if (existingUser) {
            return res.status(400).json({ error: 'Email already exists' });
        }
        // Hash the password before saving it
        const hashedPassword = await bcrypt.hash(password, 10); // 10 is the saltRounds
        const newUser = new User({ name, email, password: hashedPassword });
        await newUser.save();
        res.status(201).json({ message: 'User registered successfully' });
    } catch (err) {
        console.error('Error registering user:', err);
        res.status(500).json({ error: 'Error registering user' });
    }
});

app.listen(PORT, () => {
    console.log(`Server listening on port ${PORT}`);
});