using System;
using System.ComponentModel;
using System.IO;
using ProtoBuf.Meta;
using Unity.Mathematics;

namespace ET
{
    public static class ProtobufHelper
    {
		public static void Init()
		{
		}
        
		static ProtobufHelper()
		{
			RuntimeTypeModel.Default.Add(typeof(float2), false).Add("x", "y");
			RuntimeTypeModel.Default.Add(typeof(float3), false).Add("x", "y", "z");
			RuntimeTypeModel.Default.Add(typeof(float4), false).Add("x", "y", "z", "w");
			RuntimeTypeModel.Default.Add(typeof(quaternion), false).Add("value");
		}
		
		public static object Deserialize(Type type, byte[] bytes, int index, int count)
		{
			using MemoryStream stream = new MemoryStream(bytes, index, count);
			object o = ProtoBuf.Serializer.Deserialize(type, stream);
			if (o is ISupportInitialize supportInitialize)
			{
				supportInitialize.EndInit();
			}
			return o;
		}

        public static byte[] Serialize(object message)
		{
			using MemoryStream stream = new MemoryStream();
			ProtoBuf.Serializer.Serialize(stream, message);
			return stream.ToArray();
		}

        public static void Serialize(object message, Stream stream)
        {
            ProtoBuf.Serializer.Serialize(stream, message);
        }

        public static object Deserialize(Type type, Stream stream)
        {
            try
            {
                object o = ProtoBuf.Serializer.Deserialize(type, stream);
                if (o is ISupportInitialize supportInitialize)
                {
                    supportInitialize.EndInit();
                }
                return o;
            }
            catch (Exception)
            {
                Log.Error($"协议数据反序列化时出错了，通常原因是协议更改后，前后端未一起更新编译, Type:{type}");
                return null;
            }
        }
    }
}