using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace ArcServer
{
    public sealed class Client
    {
        public Socket mSocket;
        private bool isSize { get; set; }
        public byte[] buffer;
        public Server server { get; set; }
        public DateTime lastPing { get; set; }
        private User mUser;

        public Client(Socket pSocket, Server serv, User pUser)
        {
            mSocket = pSocket;
            isSize = true;
            mUser = pUser;
            server = serv;
            lastPing = DateTime.Now;
            if (!mSocket.Connected) return;
            mSocket.BeginReceive(buffer = new byte[4], 0, 4, SocketFlags.None, new AsyncCallback(ParseHeader), mSocket);
        }

        void fBeginReceive(int size)
        {
            buffer = new byte[size];
            mSocket.BeginReceive(buffer, 0, size, SocketFlags.None, new AsyncCallback(ParseHeader), null);
        }

        void ParseHeader(IAsyncResult ar)
        {
            try
            {
                int len = mSocket.EndReceive(ar);
                if (len < (isSize ? 4 : 2))
                {
                    OnClose();
                    return;
                }
                int nextReceiveLength = 4;
                if (isSize)
                {
                    nextReceiveLength = BitConverter.ToInt32(buffer, 0);
                    isSize = false;
                }
                else
                {
                    Packet packet = new Packet(buffer);
                    server.Handle(this, packet);
                    isSize = true;
                }
                fBeginReceive(nextReceiveLength);
            }
            catch
            {
                OnClose();
            }
        }

        private void OnClose()
        {
            Log.Write(mSocket.RemoteEndPoint + " Disconnected from server!", msgType.Information);
            mSocket.Close();
            server.RemoveClient(mUser);
        }

        public void SendPacket(Packet packet)
        {
            byte[] data = packet.GetPacket();
            Console.WriteLine("TRying to send packet... Length {0}, Data: {1}", data.Length, data.ToReadableByteArray());
            try
            {
                mSocket.Send(data);
            }
            catch (Exception ex)
            {
                Log.Write("Error sending Packet: " + ex.Message, msgType.Exception);
            }
        }


    }
}