middleware.js

const { campgroundSchema } = require('./schemas');
const ExpressError = require('./utils/ExpressError')
const Campground = require('./models/campground');
const Review = require('./models/review');
const {reviewSchema} = require('./schemas');

module.exports.isLoggedIn = (req, res, next) => {
    if (!req.isAuthenticated()) {
        req.session.returnTo = req.originalUrl
        req.flash('error', 'You must be signed in first!');
        return res.redirect('/login');
    }
    next();
}


module.exports.validateCampground = (req,res,next)=>{
    const {error} = campgroundSchema.validate(req.body);
    if(error){
        const msg = error.details.map(el=>el.message).join(',')
        throw new ExpressError(msg,400)
    }else{
        next();
    }
}

module.exports.isAuthor = async (req,res,next)=>{
    const { id } = req.params;
    const campground = await Campground.findById(id);
    if(!campground.author.equals(req.user._id))
    {
        req.flash('error','You do nat have permission to do that');
        return res.redirect(`/campgrounds/${id}`);
    }else{
        next();
    }
}

module.exports.isReviewAuthor = async (req,res,next)=>{
    const { id,reviewId } = req.params;
    const review = await Review.findById(reviewId);
    if(!review.author.equals(req.user._id))
    {
        req.flash('error','You do nat have permission to do that');
        return res.redirect(`/campgrounds/${id}`);
    }else{
        next();
    }
}

module.exports.validateReview = (req,res,next)=>{
    const {error} = reviewSchema.validate(req.body);
    if(error){
        const msg = error.details.map(el=>el.message).join(',')
        throw new ExpressError(msg,400)
    }else{
        next();
    }
}