Solution

src/config/database.js

@@ -0,0 +1,16 @@
+/* eslint-disable no-console */
+require('dotenv').config();
+
+const { Sequelize } = require('sequelize');
+
+const sequelize = new Sequelize(
+  process.env.DATABASE,
+  process.env.USERNAME_DATABASE,
+  process.env.PASSWORD_DATABASE,
+  {
+    host: process.env.HOST_DATABASE,
+    dialect: 'postgres',
+  },
+);
+
+module.exports = { sequelize };

src/controllers/auth.controller.js

@@ -0,0 +1,106 @@
+/* eslint-disable no-console */
+const User = require('../models/user.model');
+const bcrypt = require('bcrypt');
+const {
+  validateEmail,
+  validatePassword,
+  send,
+} = require('../services/auth.services');
+const { v4: uuidv4 } = require('uuid');
+const jwt = require('jsonwebtoken');
+
+const registration = async (req, res) => {
+  const { name, email, password } = req.body;
+  const errorEmail = validateEmail(email);
+  const errorPassword = validatePassword(password);
+
+  if (errorEmail) {
+    return res.status(400).send(errorEmail);
+  }
+
+  if (errorPassword) {
+    return res.status(400).send(errorPassword);
+  }
+
+  const exist = await User.findOne({ where: { email } });
+
+  if (exist !== null) {
+    return res.status(401).send('User already exist');
+  }
+
+  const cashedPassword = await bcrypt.hash(password, 10);
+
+  const uuid = uuidv4();
+
+  await User.create({
+    name: name,
+    email: email,
+    password: cashedPassword,
+    activationToken: uuid,
+  });
+
+  await send(
+    email,
+    'Activate email',
+    `go to link http://localhost:3000/activation/${uuid}`,
+  );
+  res.send(201);
+};
+
+const activation = async (req, res) => {
+  const { activationToken } = req.params;
+
+  const user = await User.findOne({ where: { activationToken } });
+
+  if (!user) {
+    res.status(404).send('invalind activation token');
+  }
+
+  user.isActivated = true;
+  user.activationToken = null;
+  await user.save();
+  res.redirect('http://localhost:3000/profile');
+};
+
+const login = async (req, res) => {
+  const { email, password } = req.body;
+
+  const existUser = await User.findOne({ where: { email } });
+
+  if (!existUser) {
+    res.send('User not found');
+  }
+
+  const isValid = await bcrypt.compare(password, existUser.password);
+
+  if (!isValid) {
+    res.send('Invalid credentials');
+  }
+
+  if (!existUser.isActivated) {
+    await send(
+      email,
+      'Activate email',
+      `go to link http://localhost:3000/activation/${existUser.activationToken}`,
+    );
+
+    return res.status(403).send('Activate email first');
+  }
+
+  const token = jwt.sign(
+    { id: existUser.id, email: existUser.email },
+    process.env.JWT_SECRET,
+    { expiresIn: '30 days' },
+  );
+
+  res.cookie('token', token, { httpOnly: true });
+  res.redirect('http://localhost:3000/profile');
+};
+
+module.exports = {
+  authController: {
+    registration,
+    activation,
+    login,
+  },
+};

src/controllers/user.controller.js

@@ -0,0 +1,147 @@
+/* eslint-disable no-console */
+const User = require('../models/user.model');
+const bcrypt = require('bcrypt');
+const { v4: uuidv4 } = require('uuid');
+
+const {
+  validateEmail,
+  validatePassword,
+  send,
+} = require('../services/auth.services');
+
+const profile = async (req, res) => {
+  const userId = req.user.id;
+
+  const user = await User.findByPk(userId, {
+    attributes: ['id', 'name', 'email'],
+  });
+
+  res.send(user);
+};
+
+const changeName = async (req, res) => {
+  const userId = req.user.id;
+  const { name } = req.body;
+
+  const user = await User.findByPk(userId);
+
+  user.name = name;
+  await user.save();
+  res.send('Username changed');
+};
+
+const changePassword = async (req, res) => {
+  const userId = req.user.id;
+  const { password, newPassword, confirm } = req.body;
+
+  if (!confirm) {
+    res.send('You need confirm change');
+  }
+
+  const user = await User.findByPk(userId);
+
+  const isValid = await bcrypt.compare(password, user.password);
+
+  if (!isValid) {
+    res.status(401).send('Invalid credentials');
+  }
+
+  user.password = await bcrypt.hash(newPassword, 10);
+  await user.save();
+  res.send('password changed');
+};
+
+const resetPassword = async (req, res) => {
+  const { email } = req.body;
+
+  const user = await User.findOne({ where: { email } });
+
+  if (!user) {
+    return res.status(401).send('Invalid credentials');
+  }
+
+  const token = uuidv4();
+
+  user.resetToken = token;
+
+  await send(
+    user.email,
+    'password reset',
+    `go to link http://localhost:3000/reset/${token}`,
+  );
+
+  await user.save();
+  res.send('email sent');
+};
+
+const resetPasswordConfirm = async (req, res) => {
+  const { resetToken } = req.params;
+  const { password, repeatPassword } = req.body;
+
+  const errorPassword = validatePassword(password);
+
+  if (errorPassword) {
+    return res.status(400).send(errorPassword);
+  }
+
+  if (password !== repeatPassword) {
+    res.send('passwords not equil');
+  }
+
+  const user = await User.findOne({ where: { resetToken } });
+
+  user.password = await bcrypt.hash(password, 10);
+  user.resetToken = null;
+  user.save();
+  res.send('password changed');
+};
+
+const changeEmail = async (req, res) => {
+  const userId = req.user.id;
+  const { password, email } = req.body;
+
+  const user = await User.findByPk(userId);
+
+  const isValid = await bcrypt.compare(password, user.password);
+
+  if (!isValid) {
+    res.status(401).send('Invalid credentials');
+  }
+
+  const errorEmail = validateEmail(email);
+
+  if (errorEmail) {
+    return res.status(400).send(errorEmail);
+  }
+
+  const uuid = uuidv4();
+
+  await send(
+    user.email,
+    'Activate email',
+    `go to link http://localhost:3000/activation/${uuid}`,
+  );
+
+  user.email = email;
+  user.isActivated = false;
+  user.activationToken = uuid;
+  await user.save();
+  res.redirect('http://localhost:3000/login');
+};
+
+const logout = async (req, res) => {
+  res.clearCookie('token');
+  res.redirect('/login');
+};
+
+module.exports = {
+  userController: {
+    profile,
+    changeName,
+    changePassword,
+    changeEmail,
+    logout,
+    resetPassword,
+    resetPasswordConfirm,
+  },
+};

src/index.js

@@ -1 +1,32 @@
+/* eslint-disable max-len */
+/* eslint-disable no-console */
 'use strict';
+
+const express = require('express');
+const cookieParser = require('cookie-parser');
+const { sequelize } = require('../src/config/database'); // import connect to database
+const { router: authRouter } = require('../src/routes/auth.routes');
+const { router: userRouter } = require('../src/routes/user.routes'); // import routes
+
+async function start() {
+  try {
+    await sequelize.authenticate(); // connect to database
+    console.log('database connected');
+
+    await sequelize.sync({ force: true }); // create tables
+    console.log('tables created');
+
+    const app = express(); // create express app
+
+    app.use(cookieParser());
+    app.use(express.json()); // allow json in body
+    app.use(authRouter);
+    app.use(userRouter);
+
+    app.listen(3000, () => console.log('server running on 3000 port')); // start server
+  } catch (err) {
+    console.error('unable connect to database', err);
+  }
+}
+
+start();

src/middlewares/auth.middleware.js

@@ -0,0 +1,32 @@
+const jwt = require('jsonwebtoken');
+
+require('dotenv').config();
+
+function authMiddleware(req, res, next) {
+  const token = req.cookies.token;
+
+  if (!token) {
+    return res.status(401).send('unautorised');
+  }
+
+  try {
+    const userData = jwt.verify(token, process.env.JWT_SECRET);
+
+    req.user = userData;
+    next();
+  } catch {
+    return res.status(401).send('Invalid token');
+  }
+}
+
+function guestMiddleware(req, res, next) {
+  const token = req.cookies.token;
+
+  if (token) {
+    return res.redirect('/profile');
+  }
+
+  next();
+}
+
+module.exports = { authMiddleware, guestMiddleware };

src/models/user.model.js

@@ -0,0 +1,33 @@
+const { DataTypes } = require('sequelize');
+const { sequelize } = require('../config/database');
+
+const Users = sequelize.define('Users', {
+  name: {
+    type: DataTypes.STRING,
+    allowNull: false,
+  },
+  email: {
+    type: DataTypes.STRING,
+    allowNull: false,
+    unique: true,
+  },
+  password: {
+    type: DataTypes.STRING,
+    allowNull: false,
+  },
+  isActivated: {
+    type: DataTypes.BOOLEAN,
+    allowNull: true,
+    defaultValue: false,
+  },
+  activationToken: {
+    type: DataTypes.STRING,
+    allowNull: true,
+  },
+  resetToken: {
+    type: DataTypes.STRING,
+    allowNull: true,
+  },
+});
+
+module.exports = Users;

src/routes/auth.routes.js

@@ -0,0 +1,21 @@
+/* eslint-disable no-unused-vars */
+const express = require('express');
+const router = express.Router();
+const User = require('../models/user.model');
+
+const { authController } = require('../controllers/auth.controller');
+const {
+  authMiddleware,
+  guestMiddleware,
+} = require('../middlewares/auth.middleware');
+
+router.post('/registration', guestMiddleware, authController.registration);
+
+router.get(
+  '/activation/:activationToken',
+  guestMiddleware,
+  authController.activation,
+);
+router.post('/login', guestMiddleware, authController.login);
+
+module.exports = { router };