using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace StgSharp.Data
{

    public abstract class SSDSerializable
    {
        public abstract byte SSDTypeCode { get; }

        public abstract byte[] GetBytes();

        public abstract byte[] GetBytes(out int length);

        internal abstract void BuildFromByteStream(byte[] stream);
    }

    public static class SerializableTypeCode
    {
        public const byte IndexTable = 1;
        public const byte Image = 2;
        public const byte Audio = 3;
        public const byte Shader = 4;
        public const byte Text = 5;
        public const byte RawData = 6;
        public const byte VirtualFolder = 7;


        public static string GetNameTail(byte typeCode)
        {
            switch (typeCode)
            {
                case IndexTable:
                    return "_indexT";
                case Image:
                    return "_img";
                case Audio:
                    return "_wav";
                case Shader:
                    return "_gls";
                case Text:
                    return "_txt";
                case RawData:
                    return "_raw";
                case VirtualFolder:
                    return "_f";
                default:
                    throw new ArgumentException("Unknown file type");
            }
        }
    }

    public static partial class Serializer
    {
        public static byte[] Serialize(SSDSerializable serializableObject)
        {
            return serializableObject.GetBytes();
        }

        public static T Deserialize<T>(byte[] stream)where T : SSDSerializable
        {
            T serializableObject = (T)Activator.CreateInstance<T>();
            serializableObject.BuildFromByteStream(stream);
            return serializableObject;
        }
    }
}