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middleware.js
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middleware.js
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const { shopSchema, reviewSchema, categorySchema } = require('./schemas');
const ExpressError = require('./utils/ExpressError');
const Shop = require('./models/shop');
const Review = require('./models/review');
module.exports.isLoggedIn = (req, res, next) => {
if (!req.isAuthenticated()) { // from passport middleware
req.session.returnTo = req.originalUrl;
req.flash('error', 'You must be logged in to continue');
return res.redirect('/users/login');
}
next();
}
module.exports.storeReturnTo = (req, res, next) => {
if (req.session.returnTo) {
res.locals.returnTo = req.session.returnTo;
}
next();
}
module.exports.validateShop = (req, res, next) => {
const { error } = shopSchema.validate(req.body);
if (error) {
console.log('\Failed Shop validation\n');
const msg = error.details.map(el => el.message).join(','); // in case more than one err msg
throw new ExpressError(msg, 400); // throw new error will directly go to error handler, no next() is needed
} else {
console.log('\nPassed Shop validation\n');
next(); // if no error, continue to next middleware, res.render/send will end the cycle
}
}
module.exports.validateReview = (req, res, next) => {
const { error } = reviewSchema.validate(req.body);
if (error) {
console.log('\Failed Review validation\n');
const msg = error.details.map(el => el.message).join(',');
throw new ExpressError(msg, 400);
} else {
console.log('\nPassed Review validation\n');
next();
}
}
module.exports.validateCategory = (req, res, next) => {
console.log(req.body);
const { error } = categorySchema.validate(req.body);
if (error) {
console.log('\Failed Category validation\n');
const msg = error.details.map(el => el.message).join(',');
throw new ExpressError(msg, 400);
} else {
console.log('\nPassed Category validation\n');
next();
}
}
module.exports.isAuthor = async (req, res, next) => {
const { id } = req.params;
const shop = await Shop.findById(id);
if (!shop.author.equals(req.user._id)) {
req.flash('error', 'You do not have permission to do that!');
return res.redirect(`/shops/${shop._id}`);
}
next();
}
module.exports.isReviewAuthor = async (req, res, next) => {
const { id, reviewId } = req.params;
const review = await Review.findById(reviewId);
if (!review.author.equals(req.user._id)) {
req.flash('error', 'You do not have permission to do that!');
return res.redirect(`/shops/${id}`);
}
next();
}