using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Unity.Networking.Transport;
using KairoEngine.Core;

namespace KairoEngine.Multiplayer
{
    public static class NetMsgController
    {
        public static void Deserialize(uint code, ref DataStreamReader stream, ServerBehaviour server, int clientId = -1) 
            => Deserialize(code, ref stream, server, null, clientId);

        public static void Deserialize(uint code, ref DataStreamReader stream, ClientBehaviour client, int clientId = -1) 
            => Deserialize(code, ref stream, null, client, clientId);

        public static void Deserialize(uint code, ref DataStreamReader stream, ServerBehaviour server, ClientBehaviour client, int clientId)
        {
            NetOpCode opCode = (NetOpCode)code;
            switch (opCode)
            {
                case NetOpCode.Disconnect:
                    NetDisconnectMsg netDisconnectMsg = new NetDisconnectMsg();
                    netDisconnectMsg.Deserialize(ref stream);
                    if(client != null)
                    {
                        string text = $"Server disconnected client";
                        if(client.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{client.eventStreamName}_ServerDisconnect", text, -1, code, netDisconnectMsg);
                    }
                    if(server != null)
                    {
                        string text = $"Client is disconnecting";
                        if(server.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{server.eventStreamName}_ClientDisconnect", text, clientId, code, netDisconnectMsg);
                    }
                    break;
                case NetOpCode.Handshake:
                    NetHandshakeMsg netHandshakeMsg = new NetHandshakeMsg();
                    netHandshakeMsg.Deserialize(ref stream);
                    if(client != null) 
                    {
                        string text = $"Server accepted handshake (playerName = {netHandshakeMsg.playerName})";
                        if(client.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{client.eventStreamName}_HandshakeAccepted", text, -1, code, netHandshakeMsg);
                    }
                    if(server != null)  
                    {
                        string text = $"Received handshake from client (ID {clientId}, playerName = {netHandshakeMsg.playerName})";
                        if(server.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{server.eventStreamName}_HandshakeReceived", text, clientId, code, netHandshakeMsg);
                    }
                    break;
                case NetOpCode.ClientConnected:
                    NetClientConnectedMsg netClientConnectedMsg = new NetClientConnectedMsg();
                    netClientConnectedMsg.Deserialize(ref stream);
                    if(client != null)
                    {
                        string text = $"New peer connected to server (playerName = {netClientConnectedMsg.playerName})";
                        if(client.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{client.eventStreamName}_PeerConnected", text, -1, code, netClientConnectedMsg);
                    }
                    break;
                case NetOpCode.ClientDisconnected:
                    NetClientDisconnectedMsg netClientDisconnectedMsg = new NetClientDisconnectedMsg();
                    netClientDisconnectedMsg.Deserialize(ref stream);
                    if(client != null)
                    {
                        string text = $"Peer disconnected to server (playerName = {netClientDisconnectedMsg.playerName})";
                        if(client.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{client.eventStreamName}_PeerDisconnected", text, -1, code, netClientDisconnectedMsg);
                    }
                    break;
                default:
                    NetMsg netMsg = new NetMsg();
                    netMsg.Deserialize(ref stream);
                    string error = $"Received data with invalid NetOpCode {code}";
                    if(client != null)
                    {
                        if(client.debug)  Debug.Log(error);
                        NetMsgEvents.Trigger($"{client.eventStreamName}_InvalidOpCode", error, -1, code, netMsg);
                    }
                    if(server != null)
                    {
                        if(server.debug) Debug.Log(error);
                        NetMsgEvents.Trigger($"{server.eventStreamName}_InvalidOpCode", error, clientId, code, netMsg);
                    }
                    break;
            }
        }

        public static void Serialize(uint code, NetMsg netMsg, ref DataStreamWriter writer, ServerBehaviour server, int clientId = -1) 
            => Serialize(code, netMsg, ref writer, server, null, clientId);
        public static void Serialize(uint code, NetMsg netMsg, ref DataStreamWriter writer, ClientBehaviour client, int clientId = -1 ) 
            => Serialize(code, netMsg, ref writer, null, client, clientId);
        public static void Serialize(uint code, NetMsg netMsg, ref DataStreamWriter writer, ServerBehaviour server, ClientBehaviour client, int clientId)
        {
            NetOpCode opCode = (NetOpCode)code;
            switch (opCode)
            {
                case NetOpCode.Disconnect:
                    NetDisconnectMsg netDisconnectMsg = (NetDisconnectMsg)netMsg;
                    if(client != null) 
                    {
                        string text = $"Sending disconnect message to server";
                        if(client.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{client.eventStreamName}_SendingDisconnectMessageToServer", text, clientId, code, netDisconnectMsg);
                    }
                    if(server != null)  
                    {
                        string text = $"Sending disconnect message to client (ID {clientId})";
                        if(server.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{server.eventStreamName}_SendingDisconnectMessageToClient", text, clientId, code, netDisconnectMsg);
                    }
                    netDisconnectMsg.Serialize(ref writer);
                    break;
                case NetOpCode.Handshake:
                    NetHandshakeMsg netHandshakeMsg = (NetHandshakeMsg)netMsg;
                    if(client != null) 
                    {
                        string text = $"Sending handshake (playerName = {netHandshakeMsg.playerName})";
                        if(client.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{client.eventStreamName}_SendingHandshake", text, clientId, code, netHandshakeMsg);
                    }
                    if(server != null)  
                    {
                        string text = $"Accepting handshake from client (ID {clientId}, playerName = {netHandshakeMsg.playerName})";
                        if(server.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{server.eventStreamName}_AcceptingHandshake", text, clientId, code, netHandshakeMsg);
                    }
                    netHandshakeMsg.Serialize(ref writer);
                    break;
                case NetOpCode.ClientConnected:
                    NetClientConnectedMsg netClientConnectedMsg = (NetClientConnectedMsg)netMsg;
                    if(server != null)
                    {
                        string text = $"Alerting clients of new connection (playerName = {netClientConnectedMsg.playerName})";
                        if(server.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{server.eventStreamName}_SendingClientConnectedMsg", text, clientId, code, netClientConnectedMsg);
                    }
                    netClientConnectedMsg.Serialize(ref writer);
                    break;
                case NetOpCode.ClientDisconnected:
                    NetClientDisconnectedMsg netClientDisconnectedMsg = (NetClientDisconnectedMsg)netMsg;
                    if(server != null)
                    {
                        string text = $"Alerting clients of disconnection (playerName = {netClientDisconnectedMsg.playerName})";
                        if(server.debug) Debug.Log(text);
                        NetMsgEvents.Trigger($"{server.eventStreamName}_SendingClientDisconnectedMsg", text, clientId, code, netClientDisconnectedMsg);
                    }
                    netClientDisconnectedMsg.Serialize(ref writer);
                    break;
                default:
                    break;
            }
        }
    }

}