middleware.js

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



module.exports.isLoggedin=(req,res,next)=>{
    // console.log(req.path,"|",req.originalUrl)
  
    if(!req.isAuthenticated()){
        req.session.redirectUrl=req.originalUrl;
        req.flash("error","you must be logged in to create listing!");
      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._id.equals(res.locals.currUser._id)){
        req.flash("error","you are not owner of this listing ");
       return  res.redirect(`/listings/${id}`);
    }
    next();
}

module.exports.validateListing = (req, res, next) => {

    let { error } = listingSchema.validate(req.body);
    console.log(error);
    if (error) {
        let errMsg = error.details.map((el) => el.message).join(",");
        throw new ExpressError(400, errMsg);
    }
    else {
        next();
    }
};

module.exports.validateReview=(req,res,next)=>{
    
    let {error}=reviewSchema.validate(req.body);
    console.log(error);
    if(error){
        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._id.equals(res.locals.currUser._id)){
        req.flash("error","you are not author of this review ");
       return  res.redirect(`/listings/${id}`);
    }
    next();
}