storeController.js

const mongoose = require('mongoose');
const Store = mongoose.model('Store');
const multer = require('multer');
const jimp = require('jimp');
const uuid = require('uuid');


const multerOptions = {
    storage: multer.memoryStorage(),
    fileFilter : function(req, file, next){
        const isPhoto = file.mimetype.startsWith('image/');
        if(isPhoto){
            next(null, true);
        } else {
            next({message: 'That filetype isn\'t allowed!'}, false);
        }
    }
};


exports.homePage = (req, res) => {
    res.render('index');
};

exports.addStore = (req, res) =>{
    res.render('editStore', {title: 'Add Store'});
};

exports.upload = multer(multerOptions).single('photo');

exports.resize = async(req, res, next) => {
    if(!req.file){
        next();
        return;
    }
    const extension = req.file.mimetype.split('/')[1];
    req.body.photo = uuid.v4()+'.'+extension;
    //resize
    const photo = await jimp.read(req.file.buffer);
    await photo.resize(800, jimp.AUTO);
    await photo.write('./public/uploads/'+req.body.photo);
    next();
};

exports.createStore = async (req, res) => {
    const store = await (new Store(req.body)).save();
    req.flash('success', 'Successfully Created '+store.name+'. Care to leave a review');
    res.redirect('/store/'+store.slug);
};

exports.getStores = async (req, res) => {
    const stores = await Store.find();

    res.render('stores',{ title: 'Stores', stores });
};

exports.editStore = async (req, res) => {
    const store = await Store.findOne({_id: req.params.id});
    res.render('editStore', {title: 'Edit '+store.name, store});

};

exports.updateStore = async (req, res) => {
    const store = await Store.findOneAndUpdate({_id: req.params.id}, req.body, {new: true, runValidators: true}).exec();
    req.flash('success', 'Successfully updated <strong>' +store.name+ '</strong>. <a href="/stores/'+ store.slug+'">View Source -> </a>');
    res.redirect('/stores/'+store._id+'/edit');
};