authController.ts

import express from "express";
import jwt from "jsonwebtoken";
import bcrypt from "bcryptjs";
import { v4 as uuid } from "uuid";
import { User, Session } from "../db";
import { ErrorResponse } from "../custom";

export class UserController {
 static async register(req: express.Request, res: express.Response) {
  try {
   const username = req.body.username;
   const password = bcrypt.hashSync(req.body.password, bcrypt.genSaltSync(14));
   const user = await User.create({ username, password });
   const token = jwt.sign({
    id: user._id,
    password: user.password,
    sessionId: uuid()
   }, "secret");
   res.status(200).json({
    ...user,
    token
   });
  } catch (error) {
    res.status(500).json({
     message: error.message
    });
  }
 }
 
static async login(req: express.Request, res: express.Response) {
 try {
  const { username, password } = req.body;
  const user = await User.findByUsername(username);
  
  // Throw error if user is not found
  if (!user)
   throw new ErrorResponse(404, "User not found");
  
  // Throw error for incorrect password
  if (!bcrypt.compareSync(password, user.password))
   throw new ErrorResponse(400, "Password is incorrect");
  
  const token = jwt.sign({
   id: user._id,
   password: user.password,
   sessionId: uuid()
  }, "secret");
  
  res.status(200).json({
   ...user,
   token
  });
 } catch (error) {
  res.status(error.c || 500).json({
   message: error.message
  });
 }
}
 
static async getLoggedUser(req: express.Request & { user: any; }, res: express.Response) {
 try {
  const user = req.user;
  res.status(200).json(user);
 } catch (error) {
  res.status(500).json({
   message: error.message
  });
 }
}
 
static async logout(req: express.Request & { sessionId: string; user: any; }, res: express.Response) {
 try {
  const session = await Session.invalidate(req.sessionId);
  res.status(200).json({
   ...session,
   message: `User ${req.user.username} successfully signed out`
  });
 } catch (error) {
  res.status(500).json({
   message: error.message
  });
 }
}
}