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Nodejs image uploader

Akmal answered on May 2, 2024 Popularity 3/10 Helpfulness 1/10

answer Nodejs image uploader

Nodejs image uploader

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const express = require('express');
const mongoose = require('mongoose');
const jwt = require('jsonwebtoken');
const bcrypt = require('bcryptjs');
const multer = require('multer');
const path = require('path');
const fs = require('fs');

const app = express();
app.use(express.json());

// Connect to MongoDB
mongoose.connect('mongodb://localhost:27017/clientDB', { 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 client schema
const clientSchema = new mongoose.Schema({
    name: String,
    password: String,
    image: String
});

const Client = mongoose.model('Client', clientSchema);

// Multer configuration for file uploads
const storage = multer.diskStorage({
    destination: function (req, file, cb) {
        cb(null, 'uploads/');
    },
    filename: function (req, file, cb) {
        cb(null, Date.now() + '-' + file.originalname);
    }
});

const upload = multer({ storage: storage });

// Register endpoint
app.post('/register', upload.single('image'), async (req, res) => {
    try {
        const { name, password } = req.body;
        const hashedPassword = bcrypt.hashSync(password, 10);

        const client = new Client({
            name,
            password: hashedPassword,
            image: req.file.filename // Store filename in database
        });

        await client.save();
        res.status(201).json({ message: 'Client registered successfully' });
    } catch (error) {
        res.status(500).json({ error: 'Failed to register client' });
    }
});

// Login endpoint
app.post('/login', async (req, res) => {
    try {
        const { name, password } = req.body;
        const client = await Client.findOne({ name });

        if (!client || !bcrypt.compareSync(password, client.password)) {
            return res.status(401).json({ error: 'Invalid name or password' });
        }

        const accessToken = jwt.sign({ id: client._id }, process.env.ACCESS_TOKEN_SECRET, { expiresIn: '1h' });
        res.json({ accessToken });
    } catch (error) {
        res.status(500).json({ error: 'Failed to authenticate' });
    }
});

// Middleware for verifying JWT token
function authenticateToken(req, res, next) {
    const authHeader = req.headers['authorization'];
    const token = authHeader && authHeader.split(' ')[1];
    if (token == null) return res.sendStatus(401);

    jwt.verify(token, process.env.ACCESS_TOKEN_SECRET, (err, user) => {
        if (err) return res.sendStatus(403);
        req.user = user;
        next();
    });
}

// Change name, password, and image endpoint
app.put('/profile', authenticateToken, upload.single('image'), async (req, res) => {
    try {
        const { name, password } = req.body;
        const client = await Client.findById(req.user.id);

        // Delete old image if new image is uploaded
        if (req.file && client.image) {
            fs.unlinkSync(path.join(__dirname, 'uploads', client.image));
        }

        if (name) client.name = name;
        if (password) {
            const hashedPassword = bcrypt.hashSync(password, 10);
            client.password = hashedPassword;
        }
        if (req.file) client.image = req.file.filename;

        await client.save();
        res.json({ message: 'Profile updated successfully' });
    } catch (error) {
        res.status(500).json({ error: 'Failed to update profile' });
    }
});

app.listen(3000, () => {
    console.log('Server is running on port 3000');
});

Popularity 3/10 Helpfulness 1/10 Language javascript

Source: chat.openai.com

Tags: javascript

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Contributed on May 02 2024

Akmal

0 Answers Avg Quality 2/10

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