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

namespace fis.Vid.Visuals
{
    public class VinnoVisual
    {
        /// <summary>
        /// Gets or sets the Display mode of this image.
        /// </summary>
        public VinnoDisplayMode DisplayMode { get; set; }

        /// <summary>
        /// Gets the visual type of this Visual.
        /// </summary>
        protected VinnoVisualType VisualType;

        /// <summary>
        /// Gets or sets the Indicator of this Visual.
        /// </summary>
        public VinnoVisualIndicator Indicator { get; set; }

        /// <summary>
        /// Gets or set the active mode type of this visual.
        /// </summary>
        public VinnoModeType ActiveModeType { get; set; }

        /// <summary>
        /// Gets all modse of this visual. 
        /// </summary>
        public IList<VinnoMode> Modes { get; }


        public VinnoVisual()
        {
            ActiveModeType = VinnoModeType.Undefined;
            Modes = new List<VinnoMode>();
            //Default is A
            Indicator = VinnoVisualIndicator.A;
            //Default is Normal
            DisplayMode = VinnoDisplayMode.Normal;
        }

        public virtual byte[] ToBytes()
        {
            byte[] result;
            using (var stream = new MemoryStream())
            {
                var writer = new VinnoStreamWriter(stream);
                writer.WriteByte((byte)VisualType);
                writer.WriteByte((byte)DisplayMode);
                writer.WriteByte((byte)Indicator);
                writer.WriteByte((byte)ActiveModeType);
                writer.WriteByte((byte)Modes.Count);
                foreach (var mode in Modes)
                {
                    writer.WriteBytes(mode.ToBytes());
                }
                result = stream.ToArray();
            }
            return result;
        }

        public static VinnoVisual FromBytes(byte[] bytes)
        {
            VinnoVisual result = null;
            using (var stream = new MemoryStream(bytes))
            {
                stream.Position = 0;
                var reader = new VinnoStreamReader(stream);
                var visualType = (VinnoVisualType)reader.ReadByte();
                if (visualType == VinnoVisualType.V2D)
                {
                    result = Vinno2DVisual.FromBytes(bytes);
                }
                if (visualType == VinnoVisualType.V3D)
                {
                    result = Vinno3DVisual.FromBytes(bytes);
                }
            }
            return result;
        }
    }
}