leemorgan-dev/controllers/gallery.js

const Uploader = require("../models/uploader.js");
const Gallery = require("../models/gallery.js");

module.exports = {
    /*
    POST: create a new gallery
    req.body = {
        owner: String (id of owner),
        password: String,
        tags: [String]
    }
    req.files = [images]
    */
    create: function(req, res){
        Uploader.findOne({_id: req.body.id})
            .then((uploader)=>{
                if(uploader === null) throw "uploader";
                if(req.body.password !== uploader.password) throw "pass";

                let gallery = new Gallery({
                    owner: uploader._id,
                    tags: req.body.tags.split(","),
                    images: []
                });

                let files = req.files.images;
                for(let i = 0; i < files.length; i++){
                    let fileString = `/galleryImages/${files[i].name}`;
                    files[i].mv(`${__dirname}/..${fileString}`);
                    gallery.push(fileString);
                };

                return gallery.save();
            })
            .then((gallery)=>{
            return res.redirect("/");
            })
            .catch((err)=>{
                console.log(err);
                if(err === "uploader") return res.json("You do not have permission to upload");
                if(err === "pass") return res.json("Incorrect password");
                return res.json("ERROR: something went wrong");
            })
    }
}