/**
 * ownCloud - News
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Bernhard Posselt <dev@bernhard-posselt.com>
 * @copyright Bernhard Posselt 2014
 */
app.factory('Resource', () => {
    'use strict';

    class Resource {


        constructor (http, BASE_URL, id='id') {
            this.id = id;
            this.values = [];
            this.hashMap = {};
            this.http = http;
            this.BASE_URL = BASE_URL;
        }


        receive (objs) {
            for (let obj of objs) {
                this.add(obj);
            }
        }


        add (obj) {
            let existing = this.hashMap[obj[this.id]];

            if (existing === undefined) {
                this.values.push(obj);
                this.hashMap[obj[this.id]] = obj;
            } else {
                // copy values from new to old object if it exists already
                for (let [key, value] of items(obj)) {
                    existing[key] = value;
                }
            }
        }


        size () {
            return this.values.length;
        }


        get (id) {
            return this.hashMap[id];
        }


        delete (id) {
            // find index of object that should be deleted
            let deleteAtIndex = this.values.findIndex(e => e[this.id] === id);

            if (deleteAtIndex !== undefined) {
                this.values.splice(deleteAtIndex, 1);
            }

            if (this.hashMap[id] !== undefined) {
                delete this.hashMap[id];
            }
        }


        clear () {
            this.hashMap = {};

            // http://stackoverflow.com/questions/1232040
            // this is the fastes way to empty an array when you want to keep
            // the reference around
            while (this.values.length > 0) {
                this.values.pop();
            }
        }


        getAll () {
            return this.values;
        }


    }

    return Resource;
});