const passport = require('passport');

const { productSchema, productInputSchema } = require('./schema');

const ExpressError = require('./utils/expressError');

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

const { error } = productSchema.validate(req.body);

if(error){

const message = error.details.map(el => el.message).join(',');

throw new ExpressError(message, 400)

}else{

next();

}

};

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

const { error } = productInputSchema.validate(req.body);

if(error){

const message = error.details.map(el => el.message).join(',');

throw new ExpressError(message, 400)

}else{

next();

}

};

module.exports.loginAuthenticate = passport.authenticate('local', {

failureFlash : true,

failureRedirect : '/login'

});

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.storeReturnTo = (req, res, next) => {

// Check if returnTo is in the request body (sent from the form)

if (req.body.returnTo) {

res.locals.returnTo = req.body.returnTo;

}

// Fall back to session if available

else if (req.session.returnTo) {

res.locals.returnTo = req.session.returnTo;

}

// Fall back to referer header

else if (req.get('referer')) {

res.locals.returnTo = req.get('referer');

}

next();

};

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

if (req.isAuthenticated()) {

return res.redirect('/');

}

next();

}