var events = {};

function showEvent( eid, fid, width, height ) {    
  var url = '?view=event&eid='+eid+'&fid='+fid;
  url += filterQuery;
  window.location.href = url;

  //video element is blocking video elements elsewhere in chrome possible interaction with mouseover event?
  //FIXME unless an exact cause can be determined should store all video controls and do something to the other controls when we want to load a new video seek etc or whatever may block
  /*var vid= $('preview');
    vid.oncanplay=null;
  //    vid.currentTime=vid.currentTime-0.1;
  vid.pause();*/
}

function createEventHtml( event, frame ) {
  var eventHtml = new Element( 'div' );

  if ( event.Archived > 0 )
    eventHtml.addClass( 'archived' );

  new Element( 'p' ).inject( eventHtml ).set( 'text', monitors[event.MonitorId].Name );
  new Element( 'p' ).inject( eventHtml ).set( 'text', event.Name+(frame?("("+frame.FrameId+")"):"") );
  new Element( 'p' ).inject( eventHtml ).set( 'text', event.StartTime+" - "+event.Length+"s" );
  new Element( 'p' ).inject( eventHtml ).set( 'text', event.Cause );
  if ( event.Notes )
    new Element( 'p' ).inject( eventHtml ).set( 'text', event.Notes );
  if ( event.Archived > 0 )
    new Element( 'p' ).inject( eventHtml ).set( 'text', archivedString );

  return( eventHtml );
}

function showEventDetail( eventHtml ) {
  $('instruction').addClass( 'hidden' );
  $('eventData').empty();
  $('eventData').adopt( eventHtml );
  $('eventData').removeClass( 'hidden' );
}

function eventDataResponse( respObj, respText ) {
  var event = respObj.event;
  if ( !event ) {
    console.log( "Null event" );
    return;
  }
  events[event.Id] = event;

  if ( respObj.loopback ) {
    requestFrameData( event.Id, respObj.loopback );
  }
}

function frameDataResponse( respObj, respText ) {
  var frame = respObj.frameimage;
  if ( !frame.FrameId ) {
    console.log( "Null frame" );
    return;
  }

  var event = events[frame.EventId];
  if ( !event ) {
    console.error( "No event "+frame.eventId+" found" );
    return;
  }

  if ( !event['frames'] )
    event['frames'] = new Object();

  event['frames'][frame.FrameId] = frame;
  event['frames'][frame.FrameId]['html'] = createEventHtml( event, frame );

  previewEvent(frame.EventId, frame.FrameId);
}

var eventQuery = new Request.JSON( { url: thisUrl, method: 'get', timeout: AJAX_TIMEOUT, link: 'cancel', onSuccess: eventDataResponse } );
var frameQuery = new Request.JSON( { url: thisUrl, method: 'get', timeout: AJAX_TIMEOUT, link: 'cancel', onSuccess: frameDataResponse } );

function requestFrameData( eventId, frameId ) {
  if ( !events[eventId] ) {
    eventQuery.options.data = "view=request&request=status&entity=event&id="+eventId+"&loopback="+frameId;
    eventQuery.send();
  } else {
    frameQuery.options.data = "view=request&request=status&entity=frameimage&id[0]="+eventId+"&id[1]="+frameId;
    frameQuery.send();
  }
}

function previewEvent( eventId, frameId ) {

  if ( events[eventId] ) {
    var event = events[eventId];
    if ( event['frames'] ) {
      if ( event['frames'][frameId] ) {
        showEventDetail( event['frames'][frameId]['html'] );
        var imagePath = 'index.php?view=image&eid='+eventId+'&fid='+frameId;
        var videoName = event.DefaultVideo;
        loadEventImage( imagePath, eventId, frameId, event.Width, event.Height, event.Frames/event.Length, videoName, event.Length, event.StartTime, monitors[event.MonitorId]);
        return;
      }
    }
  }
  requestFrameData( eventId, frameId );
}

function loadEventImage( imagePath, eid, fid, width, height, fps, videoName, duration, startTime, Monitor ) {
  var vid= $('preview');
  var imageSrc = $('imageSrc');
  if ( videoName && vid ) {
    vid.show();
    imageSrc.hide();
    var newsource=imagePath.slice(0,imagePath.lastIndexOf('/'))+"/"+videoName;
    //console.log(newsource);
    //console.log(sources[0].src.slice(-newsource.length));
    if ( newsource != vid.currentSrc.slice(-newsource.length) || vid.readyState == 0 ) {
      //console.log("loading new");
      //it is possible to set a long source list here will that be unworkable?
      var sources = vid.getElementsByTagName('source');
      sources[0].src=newsource;
      var tracks = vid.getElementsByTagName('track');
      if(tracks.length){
        tracks[0].parentNode.removeChild(tracks[0]);
      }
      vid.load();
      addVideoTimingTrack(vid, Monitor.LabelFormat, Monitor.Name, duration, startTime)
        vid.currentTime = fid/fps;
    } else {
      if ( ! vid.seeking )
        vid.currentTime=fid/fps;
    }
  } else {
    if ( vid ) vid.hide();
    imageSrc.show();
    imageSrc.setProperty( 'src', imagePath );
    imageSrc.removeEvent( 'click' );
    imageSrc.addEvent( 'click', showEvent.pass( [ eid, fid, width, height ] ) );
  }

  var eventData = $('eventData');
  eventData.removeEvent( 'click' );
  eventData.addEvent( 'click', showEvent.pass( [eid, fid, width, height] ) );
}

function tlZoomBounds( minTime, maxTime ) {
  console.log( "Zooming" );
  location.replace('?view='+currentView+filterQuery+'&minTime='+minTime+'&maxTime='+maxTime);
}

function tlZoomRange( midTime, range ) {
  location.replace('?view='+currentView+filterQuery+'&midTime='+midTime+'&range='+range);
}

function tlPan( midTime, range ) {
  location.replace('?view='+currentView+filterQuery+'&midTime='+midTime+'&range='+range);
}