How to add like and unlike feature in NodeJs?

// routes/ad.js
router.post("/wishlist", requireSignin, ad.addToWishlist);
router.delete("/wishlist/:adId", requireSignin, ad.removeFromWishlist);

// controllers/ad.js
export const addToWishlist = async (req, res) => {
  try {
    const user = await User.findByIdAndUpdate(
      req.user._id,
      {
        $addToSet: { wishlist: req.body.adId },
      },
      { new: true }
    );
    const { password, resetCode, ...rest } = user._doc;
    res.json(rest);
  } catch (err) {
    console.log(err);
  }
};

export const removeFromWishlist = async (req, res) => {
  try {
    const user = await User.findByIdAndUpdate(
      req.user._id,
      {
        $pull: { wishlist: req.params.adId },
      },
      { new: true }
    );
    const { password, resetCode, ...rest } = user._doc;
    res.json(rest);
  } catch (err) {
    console.log(err);
  }
};