using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;

namespace Multiplayer
{

    public class ClientManager : MonoSingleton<ClientManager>
    {

        #region Inspector Variables
        [Header("Client Settings")]
        [Tooltip("Address server is hosted on")]
        [SerializeField]
        private string ServerAddress = "127.0.0.1";
        [Tooltip("Port to connect to server on")]
        [SerializeField]
        private int Port = 4444;
        [Tooltip("Connects client to server on awake")]
        [SerializeField]
        private bool ConnectOnStart = false;

        public string LobbyScene;

        public string GameScene;

        public string Name;
        #endregion

        //Returns if client is current connected to a server
        public bool IsConnected;
        public byte ID;

        //UNET client class which connects to the server;
        public NetworkClient Client { get; private set;}

        public ClientLoginManager loginManager;

        /// <summary>
        /// Call to connect client to host
        /// </summary>
        [ContextMenu("Start Client")]
        public void StartClient()
        {
            StartClient(ServerAddress, Port);
        }

        /// <summary>
        /// Call to connect the client to the host
        /// </summary>
        /// <param name="ServerAddress">Server Address to connect to</param>
        /// <param name="Port">Port to connect on</param>
        public void StartClient(string ServerAddress, int Port)
        {
            //If client is already connected to don't continue
            if (IsConnected)
            {
                Debug.Log("Client already connected to a server. Client needs to disconnect before it can connect to a server");
                return;
            }

            Debug.Log("Attempting to connect to: '" + ServerAddress + "' on port : '" + Port + "'");

            Client = new NetworkClient();
            loginManager = new ClientLoginManager(this);

            Client.Configure(ChannelConfig.DefaultTopology());
            Client.RegisterHandler(PlayerMsgID.Lobby, StartLobby);
            Client.Connect(ServerAddress, Port);
        }

     
        /// <summary>
        /// Sends message to server
        /// </summary>
        /// <param name="msgType">Message type, used to determin message handler</param>
        /// <param name="msg">The message to send</param>
        /// <param name="channel">Which channel to send on, by deafult sends on Reliable</param>
        /// <param name="BackLog">If client isn't connected to server add to BackLog, by default true</param>
        public void SendMessage(short msgType, MessageBase msg, ServerChannel channel = ServerChannel.Reliable)
        {
            //if client isn't connected add to backlog
            if (!IsConnected)
                Debug.Log("Player not connected to server");

            Debug.Log("Sending message to server");
            Client.SendByChannel(msgType, msg, (int)channel);
        }

        public void SendMessage(short msgType)
        {
            SendMessage(msgType, new PlayerMsg(ID));
        }

        public void StartLobby(NetworkMessage msg)
        {
            UnityEngine.SceneManagement.SceneManager.LoadScene(LobbyScene);
        }

        public void StartGame(NetworkMessage msg)
        {

        }
    }
}