middleware.js

const wrapAsync= require("./utils/wrapAsync.js");
const listing = require("./models/listing.js");
const Review = require("./models/review.js");
const {listingSchema} = require("./schema.js");
const {reviewSchema} = require("./schema.js");
const ExpressError = require("./utils/ExpressError.js");

module.exports.isLoggedIn = (req,res,next)=>{
    if(!req.isAuthenticated()){
        req.session.redirectUrl=req.originalUrl;
        req.flash("error","Please, Login to continue!");
        return res.redirect("/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)=>{
    let {id}=req.params;
    let Listing =await listing.findById(id);
    if(!Listing.owner.equals(res.locals.currUser._id)){
        req.flash("error","You are not the owner of this listing");
        return res.redirect(`/listings/${id}`);
    }
    next();
};

// listing Validater
module.exports.validateListing=(req,res,next)=>{
    let {error}=listingSchema.validate(req.body);
    if(error){
      let errMsg=error.details.map((el)=>el.message).join(",");
      throw new ExpressError(400, errMsg);
    }
    else{
      next();
    }
  }

// review validater
module.exports.validateReview=(req,res,next)=>{
    let {error}=reviewSchema.validate(req.body);
    if(error){
      console.log("Validation Error:", error.details);
      let errMsg=error.details.map((el)=>el.message).join(",");
      throw new ExpressError(400, errMsg);
    }
    else{
      next();
    }
  }

  module.exports.isReviewAuthor=async(req,res,next)=>{
    let {id,reviewId}=req.params;
    let review =await Review.findById(reviewId);
    if(!review.author.equals(res.locals.currUser._id)){
        req.flash("error","You are not the author of this review");
        return res.redirect(`/listings/${id}`);
    }
    next();
}