middlewares.js

const { required } = require("joi");
const productModel = require("./models/products_model");
const { productSchema } = require("./validateSchema");

module.exports.isLoggedIn = (req, res, next) => {
  if (!req.isAuthenticated()) {
    req.session.redirectUrl = req.originalUrl;
    req.flash("error", "You must be LoggedIn to access this Page");
    return res.redirect("/user/login");
  }
  next();
};

module.exports.saveRedirectUrl = (req, res, next) => {
  if (req.session.redirectUrl) {
    res.locals.redirectUrl = req.session.redirectUrl;
  }
  next();
};

module.exports.isOwner = async (req, res, next) => {
  const { id } = req.params;
  const product = await productModel.findById(id);

  if (!product.owner.equals(res.locals.currentUser._id)) {
    req.flash("error", "You don't have permission to edit");
    return res.redirect(`/${id}`);
  }

  next();
};

module.exports.validateProduct = (req, res, next) => {
  let { error } = productSchema.validate(req.body);
  if (error) {
    console.log("Error : ", error);
    res.status(400).send(error);
  } else {
    next();
  }
};