using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using UnityEngine;

namespace BITKit.Entities
{
	[CustomType(typeof(IEntityBinaryHeader))]
	public class EntityBinaryHeader : EntityBehavior,IEntityBinaryHeader
	{
		[Header(Constant.Header.Debug)]
		[SerializeField]
		[ReadOnly]private Vector2 traffic;
		[SerializeField]
		[ReadOnly]private string upTraffic;
		[SerializeField]
		[ReadOnly]private string downTraffic;
		
		public int Id => (int)Entity.Id;
		public IDictionary<int, IEntityBinaryComponent> ComponentDictionary { get; } =
			new Dictionary<int, IEntityBinaryComponent>();

		public override void OnStart()
		{
			base.OnStart();
			foreach (var component in Entity.Components.OfType<IEntityBinaryComponent>())
			{
				ComponentDictionary.Add(component.Id, component);
			}
		}

		public void Serialize(BinaryWriter writer)
		{
			//写入组件数量
			//写入组件ID
			//写入组件数据
			//写入组件数据长度
			var length = ComponentDictionary.Count;
			writer.Write(length);
			foreach (var component in ComponentDictionary.Values)
			{
				writer.Write(component.Id);
			}
			foreach (var component in ComponentDictionary.Values)
			{
				using var  ms = new MemoryStream();
				using var binaryWriter = new BinaryWriter(ms);
				component.Serialize(binaryWriter);
				binaryWriter.Flush();
				ms.Flush();
				var bytes = ms.ToArray();
				writer.Write(bytes.Length);
				writer.Write(bytes);
				traffic.x += bytes.Length;
			}
			upTraffic = NetUtils.GetFileSize((long)traffic.x);
		}
		public void Deserialize(BinaryReader reader)
		{
			//BIT4Log.Log<EntityBinaryHeader>("源数据长度:"+reader.BaseStream.Length);
			//读取组件数量
			//读取组件ID
			//读取组件数据
			var count = reader.ReadInt32();
			//BIT4Log.Log<EntityBinaryHeader>($"count:{count}");
			var ids = new int[count];
			for (var i = 0; i < count; i++)
			{
				ids[i] = reader.ReadInt32();
			}
			foreach (var id in ids)
			{
				var length = reader.ReadInt32();
				var bytes = reader.ReadBytes(length);
				using var stream = new MemoryStream(bytes);
				using var binaryReader = new BinaryReader(stream);
				//BIT4Log.Log<EntityBinaryHeader>($"id:{id},length:{length},bytes:\n{JsonHelper.Get(bytes)}");
				ComponentDictionary[id].Deserialize(binaryReader);
				traffic.y += length;
			}
			downTraffic = NetUtils.GetFileSize((long)traffic.y);
		}
	}
}