using System.Collections.Generic;
using System.IO;

namespace fis.Vid.Visuals
{
    public class Vinno3DVisual:VinnoVisual
    {
        /// <summary>
        /// Gets the tissue 3d areas for this visual.
        /// </summary>
        public IList<VinnoTissue3DArea> Tissue3DAreas { get; }

        public Vinno3DVisual()
        {
            VisualType = VinnoVisualType.V3D;
            Tissue3DAreas = new List<VinnoTissue3DArea>();
        }


        public override byte[] ToBytes()
        {
            var baseData = base.ToBytes();
            byte[] result;
            using (var stream = new MemoryStream())
            {
                stream.Write(baseData, 0, baseData.Length);
                var writer = new VinnoStreamWriter(stream);
                writer.WriteByte((byte)Tissue3DAreas.Count);
                foreach (var tissue3DArea in Tissue3DAreas)
                {
                    writer.WriteBytes(tissue3DArea.ToBytes());
                }
                result = stream.ToArray();
            }
            return result;
        }


        public new static VinnoVisual FromBytes(byte[] bytes)
        {
            Vinno3DVisual result = null;
            using (var stream = new MemoryStream(bytes))
            {
                stream.Position = 0;
                var reader = new VinnoStreamReader(stream);
                var visualType = (VinnoVisualType)reader.ReadByte();
                var displayMode = (VinnoDisplayMode)reader.ReadByte();
                if (visualType == VinnoVisualType.V3D)
                {
                    var indicator = (VinnoVisualIndicator)reader.ReadByte();
                    result = new Vinno3DVisual {Indicator = indicator};
                    var activeModeType = (VinnoModeType)reader.ReadByte();
                    var modeCount = reader.ReadByte();
                    var modes = new List<VinnoMode>();
                    for (int i = 0; i < modeCount; i++)
                    {
                        var mode = VinnoMode.FromBytes(reader.ReadBytes());
                        modes.Add(mode);
                    }
                    foreach (var mode in modes)
                    {
                        result.Modes.Add(mode);
                    }
                    result.ActiveModeType = activeModeType;
                    var tissue3DAreaCount = reader.ReadByte();
                    var tissue3DAreas = new List<VinnoTissue3DArea>();
                    for (int i = 0; i < tissue3DAreaCount; i++)
                    {
                        var tissue3DArea = VinnoTissue3DArea.FromBytes(reader.ReadBytes());
                        tissue3DAreas.Add(tissue3DArea);
                    }
                    foreach (var tissue3DArea in tissue3DAreas)
                    {
                        result.Tissue3DAreas.Add(tissue3DArea);
                    }
                    result.DisplayMode = displayMode;
                }
            }
            return result;
        }
    }
}