middleware.js

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


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

module.exports.validateCampground = (req, res, next) => {
    const {error} = campgroudSchema.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', 'No Permission!');
        return res.redirect(`/campgrounds/show/${id}`)
    }
    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', 'No Permission!');
        return res.redirect(`/campgrounds/show/${id}`)
    }
    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();
    }
}