Merge branch 'manual'

Author: dilshankarunarathne

User.js

@@ -0,0 +1,8 @@
+const mongoose = require('./db');
+
+const UserSchema = new mongoose.Schema({
+  username: String,
+  password: String,
+});
+
+module.exports = mongoose.model('User', UserSchema);

authController.js

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+const express = require('express');
+const router = express.Router();
+const bcrypt = require('bcryptjs');
+const jwt = require('jsonwebtoken');
+const User = require('./User');
+const multer = require('multer');
+const upload = multer();
+
+router.post('/signup', upload.none(), async (req, res) => {
+  const { username, password } = req.body;
+
+  if (!username || !password) {
+    return res.status(400).send('Username and password are required');
+  }
+
+  const hashedPassword = await bcrypt.hash(password, 10);
+  const user = new User({ username, password: hashedPassword });
+  await user.save();
+  res.sendStatus(201);
+});
+
+router.post('/login', upload.none(), async (req, res) => {
+  const user = await User.findOne({ username: req.body.username });
+  if (!user || !await bcrypt.compare(req.body.password, user.password)) {
+    return res.sendStatus(401);
+  }
+  const token = jwt.sign({ _id: user._id }, process.env.SECRET_KEY);
+  res.send({ token });
+});
+
+module.exports = router;

authMiddleware.js

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+const jwt = require('jsonwebtoken');
+
+module.exports = (req, res, next) => {
+  const authHeader = req.headers['authorization'];
+  if (!authHeader || !authHeader.startsWith('Bearer ')) {
+    return res.sendStatus(401);
+  }
+
+  const token = authHeader.split(' ')[1];
+  jwt.verify(token, process.env.SECRET_KEY, (err, user) => {
+    if (err) return res.sendStatus(403);
+    req.user = user;
+    next();
+  });
+};

db.js

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+const mongoose = require('mongoose');
+
+mongoose.connect(process.env.DB_CONNECT, { useNewUrlParser: true, useUnifiedTopology: true });
+
+module.exports = mongoose;