using System;
using System.Threading;
using System.Threading.Tasks;
using BITKit.Net.Examples;
using UnityEngine;
using Cysharp.Threading.Tasks;
namespace BITKit.Net.Kcp
{
	[CustomType(typeof(INetClient))]
	[CustomType(typeof(INetProvider))]
	public class MonoKcpClient : MonoBehaviour,INetClient,INetProvider
	{
		internal static MonoKcpClient Singleton { get; private set; }

		[SerializeField,ReadOnly] private int rate;
		[SerializeReference,SubclassSelector] private ITicker ticker;
		[SerializeField] private string m_host;
		[SerializeField] private ushort m_port;
		[SerializeField] private bool connectOnStart;
		[SerializeField] private bool autoReconnect;

		[Header(Constant.Header.Debug)]
		[SerializeField]
		[ReadOnly] private int id;
		[SerializeField]
		[ReadOnly]private Vector2 traffic;
		[SerializeField]
		[ReadOnly]private string upTraffic;
		[SerializeField]
		[ReadOnly]private string downTraffic;
		[SerializeField, ReadOnly] private bool isConnected;
		
		#if UNITY_EDITOR
		[SerializeField] private Optional<string> allowDebugHost;
		[SerializeField] private Optional<ushort> allowDebugPort;
		#endif
		
		private readonly DeltaTimer timer = new();
		
		private KcpNetClient client;
		private INetClient _netClientImplementation=>client;
		private INetProvider _netProviderImplementation=>client;
		
		private readonly IntervalUpdate _reconnectInterval = new(3);

		public event Action OnStartConnect
		{
			add => _netClientImplementation.OnStartConnect += value;
			remove => _netClientImplementation.OnStartConnect -= value;
		}

		public event Action OnConnected
		{
			add => _netClientImplementation.OnConnected += value;
			remove => _netClientImplementation.OnConnected -= value;
		}

		public event Action OnDisconnected
		{
			add => _netClientImplementation.OnDisconnected += value;
			remove => _netClientImplementation.OnDisconnected -= value;
		}

		public event Action OnConnectedFailed
		{
			add => _netClientImplementation.OnConnectedFailed += value;
			remove => _netClientImplementation.OnConnectedFailed -= value;
		}

		public bool IsConnected => _netClientImplementation.IsConnected;
		public bool ManualTick
		{
			get => client.ManualTick;
			set => client.ManualTick = value;
		}

		public int Ping => _netClientImplementation.Ping;

		public int Id => _netClientImplementation.Id;

		public void Disconnect()
		{
			_netClientImplementation.Disconnect();
		}

		public UniTask<bool> Connect(string address = "localhost", ushort port = 27014)
		{
			if(address is  "localhost" or null)
				address = m_host;
			if(port is 27014 or 0)
				port = m_port;
			
			m_host = address;
			m_port = port;
			
			return _netClientImplementation.Connect(address, port);
		}

		public void SendServerMessage(string message)
		{
			_netClientImplementation.SendServerMessage(message);
		}

		public void ServerCommand<T>(T command = default)
		{
			_netProviderImplementation.ServerCommand(command);
		}

		public void AllClientCommand<T>(T command = default)
		{
			_netProviderImplementation.AllClientCommand(command);
		}

		public void ClientCommand<T>(int id, T command)
		{
			_netProviderImplementation.ClientCommand(id, command);
		}

		public UniTask<T> GetFromServer<T>(string path = null, params object[] pars)
		{
			return client.GetFromServer<T>(path, pars);
		}

		public UniTask<T> GetFromClient<T>(int id, string path = null, params object[] pars)
		{
			return client.GetFromClient<T>(id, path, pars);
		}

		public UniTask<T> GetFromServer<T>(string path=null,T command = default)
		{
			return _netProviderImplementation.GetFromServer<T>(path,command);
		}

		public UniTask<T> GetFromClient<T>(int id,string path=null, T command = default)
		{
			return _netProviderImplementation.GetFromClient<T>(id,path, command);
		}
		public void AddRpcHandle(object rpcHandle)
		{
			_netProviderImplementation.AddRpcHandle(rpcHandle);
		}

		public void AddCommandListener<T>(Action<T> handle)
		{
			_netProviderImplementation.AddCommandListener(handle);
		}

		public void RemoveCommandListener<T>(Action<T> handle)
		{
			_netProviderImplementation.RemoveCommandListener(handle);
		}

		public void AddCommandListener<T>(Func<T, UniTask<T>> func)
		{
			_netProviderImplementation.AddCommandListener(func);
		}

		public void RemoveCommandListener<T>(Func<T, UniTask<T>> func)
		{
			_netProviderImplementation.RemoveCommandListener(func);
		}
		public void SendRT(string rpcName, params object[] pars)
		{
			_netProviderImplementation.SendRT(rpcName, pars);
		}

		public void SendTargetRT(int id, string rpcName, params object[] pars)
		{
			_netProviderImplementation.SendTargetRT(id, rpcName, pars);
		}

		public void SendAllRT(string rpcName, params object[] pars)
		{
			_netProviderImplementation.SendAllRT(rpcName, pars);
		}

		public void Tick()
		{
			_netProviderImplementation.Tick();
			
		}

		public void HandShake()
		{
			_netProviderImplementation.HandShake();
		}
		private void Awake()
		{
			Singleton = this;
			client = new KcpNetClient();
		}
		private void Start()
		{
		

			if (ticker is not null)
			{
				ManualTick = true;
				ticker.Add(OnTick);
			}
			destroyCancellationToken.Register(() =>
			{
				if (IsConnected)
					Disconnect();
				ticker?.Remove(OnTick);
			});
			
				if (!connectOnStart) return;
			#if UNITY_EDITOR
			var _host = allowDebugHost.Allow ? allowDebugHost.Value : m_host;
			var _port = allowDebugPort.Allow ? allowDebugPort.Value : m_port;
			Connect(_host, _port).Forget();
			#else
			Connect(m_host, m_port).Forget();
			#endif
		}

		private void OnTick(float obj)
		{
			if (destroyCancellationToken.IsCancellationRequested) return;
			if (client.IsConnected is false && autoReconnect)
			{
				if (_reconnectInterval.AllowUpdate)
				{
					if (client.IsConnecting is false)
					{
						client.Connect(m_host, m_port).Forget();
					}
				}
			}
			id = Id;
			timer.Update(obj);
			rate = timer;
			Tick();
			traffic = client.Traffic;
			upTraffic = NetUtils.GetFileSize((long)traffic.x);
			downTraffic = NetUtils.GetFileSize((long)traffic.y);
			isConnected = IsConnected;
		}
		[BIT]
		private void EditorConnect()
		{
			BITAppForUnity.ThrowIfNotPlaying();
			Connect(m_host, m_port).Forget();
		}
		[BIT]
		private void EditorDisconnect()
		{
			BITAppForUnity.ThrowIfNotPlaying();
			Disconnect();
		}
		[BIT]
		private async void Hello()
		{
			BITAppForUnity.ThrowIfNotPlaying();
			var value =await GetFromServer<SimplePing>(null,new SimplePing()
			{
				StartTime = DateTime.Now
			});
			BIT4Log.Log<MonoKcpClient>($"已返回\n开始:{value.StartTime}\n结束:{value.EndTime}\n延迟:{(value.EndTime-value.StartTime).TotalMilliseconds}ms");
			
			var hello = 
				await GetFromServer<string>(
					nameof(KCPNetServer.MyRpcTest),
					"hello"
					);
			BIT4Log.Log<MonoKcpClient>($"延迟:{(DateTime.Now-value.StartTime).TotalMilliseconds}ms");
			
			BIT4Log.Log<MonoKcpClient>($"已返回\n{hello}");
			var helloAsync = 
				await GetFromServer<string>(
					nameof(KCPNetServer.MyRpcTestAsync),
					"hello"
				);
			
			BIT4Log.Log<MonoKcpClient>($"已返回\n{helloAsync}");
		}
	}
}