index2.js

// index.js
const express = require('express');
const mongoose = require('mongoose');
const multer = require('multer');
const path = require('path');

const app = express();
const PORT = process.env.PORT || 3000;

// Connect to MongoDB
mongoose.connect('mongodb://localhost:27017/artwork', {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  useCreateIndex: true
}).then(() => {
  console.log('Connected to MongoDB');
}).catch((err) => {
  console.error('Error connecting to MongoDB', err);
});

// Middleware
app.use(express.json());
app.use(express.urlencoded({ extended: true }));

// Artwork Model
const Artwork = require('./models/Artwork');

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

// Multer Upload
const upload = multer({
  storage: storage,
  fileFilter: function(req, file, cb) {
    checkFileType(file, cb);
  }
}).single('artwork');

// Check File Type
function checkFileType(file, cb) {
  const filetypes = /png/;
  const extname = filetypes.test(path.extname(file.originalname).toLowerCase());
  const mimetype = filetypes.test(file.mimetype);
  if (extname && mimetype) {
    return cb(null, true);
  } else {
    cb('Error: PNG images only!');
  }
}

// Artwork Upload Route
app.post('/api/artwork/upload', (req, res) => {
  upload(req, res, async (err) => {
    if (err) {
      res.status(400).json({ error: err });
    } else {
      if (req.file == undefined) {
        res.status(400).json({ error: 'No file selected!' });
      } else {
        const { name, contact, description } = req.body;
        const artwork = new Artwork({
          name,
          contact,
          description,
          imagePath: req.file.path
        });
        await artwork.save();
        res.status(201).json({ message: 'Artwork uploaded successfully' });
      }
    }
  });
});

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