using JD.Audio.Sound;
using System.Linq;
using JD.Sequencers.Times;
using JD.Sequencers.Windowlesses;

namespace JD.Application.View.Tracks
{
    public enum OverlapMode
    {
        AllTracks,
        WaveOnly
    };

    /// <summary>
    /// TrackView control works only with non overlapping tracks, those tracks are paint behind or in front of other tracks.
    /// </summary>
    public class OverlappingTrack : WindowlessControl
    {
        private readonly global::JD.Sequencers.Times.Timeline _timeline;
        private Wave _wave;
        private static OverlapMode _overlapMode = OverlapMode.AllTracks;


        public static OverlapMode OverlapMode
        {
            get { return _overlapMode; }
            set { _overlapMode = value; }
        }

        /// <summary>
        /// Constructor.
        /// </summary>
        public OverlappingTrack(global::JD.Sequencers.Times.Timeline timeline)
        {
            _timeline = timeline;
        }

        protected global::JD.Sequencers.Times.Timeline Timeline 
        {
            get { return _timeline; }
        }

        public Wave Wave
        {
            get { return _wave; }
            set { _wave = value; }
        }

        /// <summary>
        /// Docks to match the background of the tracks in the track view.
        /// </summary>
        public void UpdateBounds(TrackView parent)
        {
            var bounds = parent.Bounds;
            switch (_overlapMode)
            {
                case OverlapMode.AllTracks:
                {
                    var bottomTrack = parent.GetTracks().LastOrDefault();

                    if (bottomTrack != null)
                    {
                        bounds.Height = bottomTrack.Bounds.Bottom - bounds.Y;
                    }
                }
                break;
                
                case OverlapMode.WaveOnly:
                {
                    var waveTrack = parent.GetTracks().OfType<WaveTrack>().FirstOrDefault();

                    if (waveTrack != null)
                    {
                        bounds.Height = waveTrack.Bounds.Height;
                    }
                }
                break;
            }
           
            Bounds = bounds;
        }
    }
}