middleware.js

const passport = require("passport");
const Listing = require("./models/listing.js");
const Review = require("./models/review.js");


module.exports.isLogin = (req,res,next)=>{
    req.session.redirect = req.originalUrl;
    if (!req.isAuthenticated()){
        req.flash("error", "You must be logged in to create/edit listing")
       return res.redirect("/login")
    };
    next();
}

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

module.exports.isOwner = async(req,res,next)=>{
    let {id} = req.params;
    let listing = await Listing.findById(id);
    if(req.user._id .equals(listing.owner)){
        next()
    }
    else{
        req.flash("error", "You are not the owner of the Listing");
        res.redirect("/listings/"+id)
    }
}


module.exports.isReviewOwner = async(req,res,next)=>{
    let {id, reviewId} = req.params;
    let review = await Review.findById(reviewId);
    if(review.createdBy .equals(res.locals.user._id)){
        next()
    }
    else{
        req.flash("error", "You are not the owner of the Review");
        res.redirect("/listings/"+id)
    }
}