middlware.js

const ExpressError = require('./utils/ExpressError');
const { campgroundSchema, 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 signed in to do that')
    return res.redirect('/login')
} else { 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 are not the author');
        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();
    }
}

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 are not the author');
        return res.redirect(`/campgrounds/${id}`)
    } else {next()}

}