nebulaYoutubeStateChange()

function nebulaYoutubeStateChange(e){
    var thisVideo = nebula.videos[nebula.getYoutubeID(e.target)];
    thisVideo.title = nebula.getYoutubeTitle(e.target);
    thisVideo.current = e.target.getCurrentTime();
    thisVideo.percent = thisVideo.current/thisVideo.duration;

    //Playing
    if ( e.data === YT.PlayerState.PLAYING ){
        var thisEvent = {
            category: 'Videos',
            action: ( nebula.isInView(jQuery(thisVideo.element)) )? 'Play' : 'Play (Not In View)',
            title: thisVideo.title,
            autoplay: thisVideo.autoplay
        };

        ga('set', nebula.analytics.metrics.videoStarts, 1);
        ga('set', nebula.analytics.dimensions.videoWatcher, 'Started');

        if ( thisVideo.autoplay ){
            thisEvent.action += ' (Autoplay)';
        } else {
            jQuery(thisVideo.element).addClass('playing');
        }

        nebula.dom.document.trigger('nebula_event', thisEvent);
        ga('send', 'event', thisEvent.category, thisEvent.action, thisEvent.title);
        nebula.nv('event', 'Video Play Began: ' + thisEvent.title);
        nebula.dom.document.trigger('nebula_playing_video', thisVideo);
        var pauseFlag = true;
        var updateInterval = 500;

        var youtubePlayProgress = setInterval(function(){
            thisVideo.current = e.target.getCurrentTime();
            thisVideo.percent = thisVideo.current/thisVideo.duration;
            thisVideo.watched = thisVideo.watched+(updateInterval/1000);
            thisVideo.watchedPercent = (thisVideo.watched)/thisVideo.duration;

            if ( thisVideo.watchedPercent > 0.25 && !thisVideo.engaged ){
                if ( nebula.isInView(jQuery(thisVideo.element)) ){
                    var thisEvent = {
                        category: 'Videos',
                        action: ( thisVideo.autoplay )? 'Engaged' : 'Engaged (Autoplay)',
                        title: thisVideo.title,
                        autoplay: thisVideo.autoplay
                    };

                    ga('set', nebula.analytics.dimensions.videoWatcher, thisEvent.action);
                    nebula.dom.document.trigger('nebula_event', thisEvent); //@todo "Nebula" 0: This needs the new nebula_event trigger with thisEvent object
                    ga('send', 'event', thisEvent.category, thisEvent.action, thisEvent.title, {'nonInteraction': true});
                    nebula.nv('event', 'Video Engaged: ' + thisEvent.title);
                    thisVideo.engaged = true;
                    nebula.dom.document.trigger('nebula_engaged_video', thisVideo);
                }
            }
        }, updateInterval);
    }

    //Ended
    if ( e.data === YT.PlayerState.ENDED ){
        jQuery(thisVideo.element).removeClass('playing');
        clearInterval(youtubePlayProgress);

        var thisEvent = {
            category: 'Videos',
            action: ( nebula.isInView(jQuery(thisVideo.element)) )? 'Ended' : 'Ended (Not In View)',
            title: thisVideo.title,
            playTime: Math.round(thisVideo.watched/1000),
            progress: thisVideo.current*1000,
            autoplay: thisVideo.autoplay
        };

        if ( thisVideo.autoplay ){
            thisEvent.action += ' (Autoplay)';
        }

        ga('set', nebula.analytics.metrics.videoCompletions, 1);
        ga('set', nebula.analytics.metrics.videoPlaytime, thisEvent.playTime);
        ga('set', nebula.analytics.dimensions.videoWatcher, thisEvent.action);

        nebula.dom.document.trigger('nebula_event', thisEvent);
        ga('send', 'event', thisEvent.category, thisEvent.action, thisEvent.title, {'nonInteraction': true});
        ga('send', 'timing', thisEvent.category, thisEvent.action, thisEvent.progress, thisEvent.title);
        nebula.nv('event', 'Video Ended: ' + thisEvent.title);
        nebula.dom.document.trigger('nebula_ended_video', thisVideo);

    //Paused
    } else {
        setTimeout(function(){ //Wait 1 second because seeking will always pause and automatically resume, so check if it is still playing a second from now
            if ( e.target.getPlayerState() == 2 && pauseFlag ){ //This must use getPlayerState() since e.data is not actually "current" inside of this setTimeout(). Paused = 2
                jQuery(thisVideo.element).removeClass('playing');
                clearInterval(youtubePlayProgress);

                var thisEvent = {
                    category: 'Videos',
                    action: 'Paused',
                    playTime: Math.round(thisVideo.watched),
                    percent: Math.round(thisVideo.percent*100),
                    progress:  thisVideo.current*1000,
                    title: thisVideo.title,
                    autoplay: thisVideo.autoplay
                };

                ga('set', nebula.analytics.metrics.videoPlaytime, Math.round(thisVideo.watched));
                ga('set', nebula.analytics.dimensions.videoPercentage, Math.round(thisVideo.percent*100));
                ga('set', nebula.analytics.dimensions.videoWatcher, thisEvent.action);

                if ( !thisVideo.pausedYet ){
                    ga('send', 'event', thisEvent.category, 'First Pause', thisEvent.title);
                    thisVideo.pausedYet = true;
                }

                nebula.dom.document.trigger('nebula_event', thisEvent);
                ga('send', 'event', thisEvent.category, thisEvent.action, thisEvent.title);
                ga('send', 'timing', thisEvent.category, thisEvent.action, thisEvent.progress, thisEvent.title);
                nebula.nv('event', 'Video Paused: ' + thisEvent.title);
                nebula.dom.document.trigger('nebula_paused_video', thisVideo);
                pauseFlag = false;
            }
        }, 1000);
    }
}

function nebulaYoutubeStateChange(){
    //Write your own code here, leave it blank, or return false.
}