auth.js

const express = require("express");
const router = express.Router();
const mongoose = require("mongoose");
const User = mongoose.model("User");
const bcrypt = require("bcryptjs");
const jwt = require("jsonwebtoken");
const { JWTKEY } = require("../keys");
const requireLogin = require("../middleware/requireLogin");

router.post("/signup", (req, res) => {
  const { name, email, password } = req.body;
  if (!email || !name) {
    return res.status(422).json({ error: "please enter all fields" });
  }
  User.findOne({ email: email })
    .then((userisaved) => {
      if (userisaved) {
        return res.status(422).json({ error: "user already exists" });
      }
      bcrypt.hash(password, 12).then((hashedpassword) => {
        const user = new User({
          email,
          password: hashedpassword,
          name,
        });
        user
          .save()
          .then((user) => {
            res.json({ message: "saved succesfully" });
          })
          .catch((err) => {
            console.log(err);
          });
      });
    })
    .catch((err) => {
      console.log(err);
    });
});
router.post("/signin", (req, res) => {
  const { email, password } = req.body;
  if (!email || !password) {
    return res.status(422).json({ error: "please add email or password" });
  }
  User.findOne({ email: email }).then((savedUser) => {
    if (!savedUser) {
      return res.status(422).json({ error: "Invalid Email or password" });
    }
    bcrypt
      .compare(password, savedUser.password)
      .then((isMatch) => {
        if (isMatch) {
          // res.json({ message: "successfully signed in" });
          const token = jwt.sign({ _id: savedUser._id }, JWTKEY);
          const { _id, name, email, followers, following, pic } = savedUser;
          res.json({
            token,
            user: { _id, name, email, followers, following, pic },
          });
        } else {
          return res.status(422).json({ error: "Invalid Email or password" });
        }
      })
      .catch((err) => {
        console.log(err);
      });
  });
});
module.exports = router;