using System;
using System.Collections.Generic;
using CueSplitter.Models;

namespace CueSplitter.Helpers
{
    internal class CueHelper
    {
        public static TrackModel[] ParseCue(string cueText, TimeSpan totalDuration)
        {
            var cue = new CueSharp_N.CueSheet(cueText, (char[])null);

            var convertedTracks = new List<TrackModel>(cue.Tracks.Length);

            TrackModel lastTrk = null;
            foreach (var track in cue.Tracks)
            {
                if (lastTrk != null)
                {
                    lastTrk.Duration = track.Offset - lastTrk.Offset;
                }

                var model = new TrackModel
                {
                    TrackNo = track.TrackNumber,
                    Offset = track.Offset,
                    Performer = track.Performer,
                    Title = track.Title,
                };

                lastTrk = model;
                convertedTracks.Add(model);
            }

            if (lastTrk != null)
            {
                lastTrk.Duration = totalDuration - lastTrk.Offset;
            }

            return convertedTracks.ToArray();
        }
    }
}