Last pr raised by gupta had issue

controllers/listings.js

@@ -54,7 +54,11 @@ module.exports.showListings = async (req, res) => {
     req.flash("error", "Listing you requested for does not exist");
     res.redirect("/listings");
   }
-  res.render("listings/show.ejs", { listing });
+  const isWishlisted = req.user && req.user.wishlist
+    ? req.user.wishlist.some((wishId)=> wishId.equals(listing._id))
+    : false;
+
+  res.render("listings/show.ejs", { listing, isWishlisted });
 };
 
 module.exports.createListing = async (req, res, next) => {

controllers/users.js

@@ -1,4 +1,5 @@
 const User =require("../models/user")
+const Listing = require("../models/listing")
 
 module.exports.renderSignUpForm =(req,res)=>{
     res.render("users/signup.ejs")
@@ -43,4 +44,80 @@ module.exports.logout=(req,res,next)=>{
       req.flash("success","You are logged Out!");
       res.redirect("/listings");
     }))
-  }
+  }
+
+module.exports.getWishlist = async (req,res)=>{
+  const user = await User.findById(req.user._id).populate({
+    path:"wishlist",
+    populate:{
+      path:"owner",
+      select:"username",
+    }
+  });
+
+  if(!user){
+    req.flash("error","User not found");
+    return res.redirect("/listings");
+  }
+
+  res.render("users/wishlist.ejs",{
+    wishlist:user.wishlist || [],
+    points:user.points || 0,
+  });
+}
+
+module.exports.addToWishlist = async (req,res)=>{
+  const {id}=req.params;
+  const listing = await Listing.findById(id);
+
+  if(!listing){
+    req.flash("error","Listing not found");
+    return res.redirect("/listings");
+  }
+
+  const user = await User.findById(req.user._id);
+
+  if(!user){
+    req.flash("error","User not found");
+    return res.redirect("/listings");
+  }
+
+  const alreadySaved = user.wishlist.some((wishId)=> wishId.equals(listing._id));
+
+  if(alreadySaved){
+    req.flash("error","Listing already in your wishlist");
+    return res.redirect(`/listings/${id}`);
+  }
+
+  user.wishlist.push(listing._id);
+  user.points = (user.points || 0) + 5;
+  await user.save();
+
+  req.flash("success","Added to wishlist. +5 points!");
+  res.redirect(`/listings/${id}`);
+}
+
+module.exports.removeFromWishlist = async (req,res)=>{
+  const {id}=req.params;
+  const user = await User.findById(req.user._id);
+
+  if(!user){
+    req.flash("error","User not found");
+    return res.redirect("/listings");
+  }
+
+  const itemIndex = user.wishlist.findIndex((wishId)=> wishId.equals(id));
+
+  if(itemIndex === -1){
+    req.flash("error","Listing not in your wishlist");
+    return res.redirect("/wishlist");
+  }
+
+  user.wishlist.splice(itemIndex,1);
+  user.points = Math.max(0,(user.points || 0) - 5);
+  await user.save();
+
+  req.flash("success","Removed from wishlist");
+  const redirectUrl = req.get("Referer") || "/wishlist";
+  res.redirect(redirectUrl);
+}

models/user.js

@@ -8,7 +8,17 @@ const userSchema = new Schema({
         type:String,
         required:true,
     },
-
+    wishlist:[
+        {
+            type:Schema.Types.ObjectId,
+            ref:"Listing",
+        }
+    ],
+    points:{
+        type:Number,
+        default:0,
+        min:0,
+    }
 })