mlgta/src/routes/signup.ts

Can log in via google, x, discord.  After login successfully, redirecting. ![alt text](https://raw.githubusercontent.com/takayamaekawa/b

import express, { Request, Response, NextFunction } from 'express';
import knex from '../config/knex';
import bcrypt from 'bcrypt';
import { requireNonLogin } from '../middlewares/checker';

const router: express.Router = express.Router();

router.get('/', (_: Request, res: Response, __: NextFunction) => {
  res.render('signup', { title: 'Sign up' });
});

router.post('/', requireNonLogin, (req: Request, res: Response, _: NextFunction) => {
  const isAuth: boolean = req.isAuthenticated();
  const username: string = req.body.username;
  const password: string = req.body.password;
  const repassword: string = req.body.repassword;

  knex("users")
    .where({ name: username })
    .select("*")
    .then(async (result) => {
      if (result.length !== 0) {
        res.render("signup", {
          title: "Sign up",
          errorMessage: ["このユーザー名はすでに使われています。"],
          isAuth: isAuth,
        })
      } else if (password == repassword) {
        const hashedPassword: string = await bcrypt.hash(password, 10);

        knex("users")
          .insert({ name: username, password: hashedPassword })
          .then(() => {
            res.render('signin', { title: 'Sign in', successMessage: ['Account create successfully!'] });
          })
          .catch((err) => {
            console.error(err);
            res.render("signup", {
              title: "Sign up",
              errorMessage: [err.sqlMessage],
              isAuth: isAuth,
            });
          });
      } else {
        res.render("signup", {
          title: "Sign up",
          errorMessage: ["パスワードが一致しません。"],
          isAuth: isAuth,
        });
      }
    })
    .catch((err) => {
      console.error(err);
      res.render("signup", {
        title: "Sign up",
        errorMessage: [err.sqlMessage],
        isAuth: isAuth,
      })
    });
})

export default router;