/**
 *  get the data from schedule
 */
var Schedule = class {

    /**
     *  the schedule xml object parsed as jQuery object
     */
    schedule = false;

    /**
     * Array of Events
     *
     * [{
     *  id: 2132,
     *  title: "foobar"
     *  date:2018-09-22T10:30:00+02:00
     *   }]
     */
    events = [];

    /**
     *  object with Information of the conference
     *  {'title', 'start', 'end', ..}
     */
    conf = {
        title:  'defaultConf',
        start:  '1984-09-23',
        end:    '1984-09-24'
    }

    /**
     * indepent time
     */
    now = new Date();

    /**
     *
    */
    talkPrototype   = {
            'date'          : '1970-01-01T00:00:00+02:00',
            'start'         : '1970-01-01T00:00:00+02:00',
            'duration'      : '00:15',
            'room'          : 'Großer Saal',
            'slug'          : 'DS2018-9336-eroffnung',
            'url'           : '/2018/fahrplan/events/9336.html',
            'title'         : 'Eröffnung',
            'subtitle'      : 'Datenspuren 2018',
            'track'         : '',
            'type'          : '',
            'language'      : 'de',
            'abstract'      : 'Eröffnung der Datenspuren 2018',
            'description'   : 'Opening Datenspuren 2018',
            'logo'          : false,
            'persons'       : { 'id' : '7339', 'name' : 'Nerd Norbert' }
    }

    /**
     * class constructor
     */
    constructor(scheduleXml){
        this.schedule = scheduleXml.children("schedule");

        this.conf.version   = this.schedule.children("version").text();
        this.conf.title     = this.schedule.children("conference").children("title").text();
        this.conf.start     = this.schedule.children("conference").children("start").text();
        this.conf.end       = this.schedule.children("conference").children("end").text();
        this.events         = this.getEvents();
    }

    /**
     * set orientation time
     */
    setTimeTo(time){
        this.now = time;
    }

    /**
     * @return String the schedule version
     */
    getScheduleVersion(){
        return this.conf.version    ;
    }
    /**
     * @return String the schedule title
     */
    getScheduleTitle(){
        return this.conf.title;
    }
    /**
     * @return day of conf start
     */
    getScheduleStart(){
        return this.conf.start;
    }
    /**this.events
     * @return day of conf end
     */
    getScheduleEnd(){
        return this.conf.end;
    }

    /**
     * return array of all Events
     */
    getEvents(){
        let allEvents = [];
        if (this.events.length == 0 ){
            //this.schedule.find('event').toArray();
            this.schedule.find('event').each( function(){
                allEvents.push({
                    title:      $(this).children('title').text(),
                    date:       $(this).children('date').text(),
                    start:      $(this).children('start').text(),
                    duration:   $(this).children('duration').text(),
                    abstract:   $(this).children('abstract').text(),
                    persons:    $(this).children('persons').text(),
                });
            });
        }
        // console.log( 888, allEvents );
        return allEvents;
    }

    /**
     * get next Events by time and room
     *
     * @param {Timestamp} minimum time to start
     * @param {*} room
     */
    getTalk(time, room){
        return talk;
    }

    /**
     * get the next Events, based on time
     *
     */
    getNextEvents(){
        if (this.events.length == 0){
            return this.events;
        }

        let talks = [];

        let now = this.now;
        //let now = new Date('September 22, 2018 19:30:00').getTime();

        this.events.forEach( talk => {
            let talkStart = new Date(talk.date).getTime();
            if ( talkStart >= now ){
                talks.push(talk);
            }
        });

        return talks;
    }

}