/**
 * This script adds markers at event start points on the first selected track.
 * The markers are labeled with the name of the media file. Several markers could have the same name if several events
 * comes from the same file.
 * If a marker already exists, no new marker is created.
 *
 * Written (better said, modified) By: Startel (from a script by JohnMeyer from a script by Edward Troxel)
 * 02/26/2007
 *
 **/

import System;
import System.IO;
import System.Windows.Forms;
import Microsoft.Win32; 
import Sony.Vegas;

try {
  var myMarker : Marker;
  var LastFileName = " ";

  //Find the first selected track
  var track = FindSelectedTrack();
  if (null == track)
      throw "no selected track";

  var eventEnum = new Enumerator(track.Events);

  // Cycle through all events on the selected track

  while (!eventEnum.atEnd()) { 
    var evnt : TrackEvent = TrackEvent(eventEnum.item());
    var MyFilePath = evnt.ActiveTake.MediaPath; 
    var extFileName = Path.GetFileName(MyFilePath);
    var baseFileName = Path.GetFileNameWithoutExtension(extFileName); // Media file name for this event

    // Only add marker if no marker already exists.
    if ( (!MarkerExist(evnt.Start.ToMilliseconds() ) ) ) {
      myMarker = new Marker(evnt.Start);
      Vegas.Project.Markers.Add(myMarker);
      myMarker.Label = baseFileName;
    }

    // Prepare for next event
    LastFileName = baseFileName;
    eventEnum.moveNext();
  }

} catch (e) {
    MessageBox.Show(e);
}

// Function to find first selected track
function FindSelectedTrack() : Track {
  var trackEnum = new Enumerator(Vegas.Project.Tracks);
  while (!trackEnum.atEnd()) {
    var track : Track = Track(trackEnum.item());
    if (track.Selected) {
        return track;
    }
    trackEnum.moveNext();
  }
  return null;
}

// Function to check if there is a marker at timecode passed to this function
// Timecode (dStart) must be in milliseconds
function MarkerExist (dStart) : boolean {

  var fmarkerEnum = new Enumerator(Vegas.Project.Markers);

  while (!fmarkerEnum.atEnd()) {
    var fMyMarker = fmarkerEnum.item();        
    var fMarkerStart = fMyMarker.Position.ToMilliseconds();
    if ( dStart == fMarkerStart ) {
      return 1;
    }

  fmarkerEnum.moveNext();

  } // End while fmarkerEnum

  return 0;
}