using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Globalization;

namespace GameServer
{
    class GameSocket
    {
        public static PacketWriter writer;
        //private static StreamWriter sw2 = new StreamWriter(@"D:\csro\Package\packete2.txt");
        /// <summary>
        /// This function transmits the data to an specific client
        /// </summary>
        /// <param name="buffer">Memory buffer</param>
        /// <param name="Index">Clientindex</param>
        public static void ProcessData(byte[] buffer, int Index)
        {
            PacketReader reader = new PacketReader(buffer, buffer.Length);
            writer = new PacketWriter();
            ushort psize = reader.Read<ushort>();
            ushort opcode = reader.Read<ushort>();
            reader.ModifyIndex(2);

            switch (opcode)
            {
                case CLIENT_OPCODES.LOGIN_CLIENT_KEEP_ALIVE:        //avoids a disconnect
                case CLIENT_OPCODES.LOGIN_CLIENT_ACCEPT_HANDSHAKE:
                    break;
                case SERVER_OPCODES.LOGIN_SERVER_HANDSHAKE:
                    break;
                case CLIENT_OPCODES.LOGIN_CLIENT_LOGIN:
                    On_2001(buffer, Index);
                    break;
                case CLIENT_OPCODES.LOGIN_CLIENT_GAMELOGIN:
                    On_6103(buffer, Index);
                    break;
                case CLIENT_OPCODES.LOGIN_CLIENT_LOGINACCESS:
                    On_7007(buffer, Index);
                    break;
                case CLIENT_OPCODES.LOGIN_CLIENT_CHARSELECTACCEPT:
                    On_7001(buffer, Index);
                    break;
            }

        }

        private static void On_2001(byte[] Packet, int Index_)
        {
            if (convert.HexToString(convert.BytesToHex(Packet).Substring(16)).Contains("SR_Client"))
            {
                //0E00 0120 0000 0B004167656E7453657276657200
                writer.SetOpcode(CLIENT_OPCODES.LOGIN_CLIENT_LOGIN);
                byte[] bArray = convert.ToByteArray("4167656E74536572766572");


                writer.Append<ushort>((ushort)bArray.Length);
                writer.AppendArray<byte>(bArray, bArray.Length);
                writer.Append<byte>(0);

                ServerSocket.Send(writer.getWorkspace(), Index_);
            }
        }
        //GameServer Login
        private static void On_6103(byte[] Packet, int Index_)
        {
            //2300 0361 xxxx 660100000A007375636B6D796431636B0A00736F7565726C6174343204000000000000
            int userLen = int.Parse(convert.Inverse(convert.BytesToHex(Packet).Substring(20, 4)), NumberStyles.HexNumber);
            string user = convert.HexToString(convert.BytesToHex(Packet).Substring(24, userLen * 2));

            int pwLen = int.Parse(convert.Inverse(convert.BytesToHex(Packet).Substring((24 + (userLen * 2)), 4)), NumberStyles.HexNumber);
            string pass = convert.HexToString(convert.BytesToHex(Packet).Substring((28 + (userLen * 2)), pwLen * 2));

            string dbuser = Database.GetString("SELECT id FROM user WHERE id='" + user + "'");//, "id");
            string dbpass = Database.GetString("SELECT password FROM user WHERE id='" + user + "'");//, "password");

            if ((dbuser.ToLower() == user.ToLower()) && (dbpass == pass))
            {
                writer.SetOpcode(0x600D);
                writer.Append<ushort>(0x0101);
                writer.Append<byte>(0);
                writer.Append<ushort>(0x2005);
                ServerSocket.Send(writer.getWorkspace(), Index_);

                writer.SetOpcode(0x600D);
                writer.Append<ushort>(0x0100);
                writer.Append<ushort>(0x0100);
                writer.Append<uint>(0x0005088F);
                writer.Append<ushort>(0);
                writer.Append<byte>(0x02);
                ServerSocket.Send(writer.getWorkspace(), Index_);

                writer.SetOpcode(0x600D);
                writer.Append<ushort>(0x0101);
                writer.Append<byte>(0);
                writer.Append<ushort>(0x6005);
                ServerSocket.Send(writer.getWorkspace(), Index_);

                writer.SetOpcode(0x600D);
                writer.Append<ushort>(0x0300);
                writer.Append<ushort>(0x0200);
                writer.Append<ushort>(0x0200);
                ServerSocket.Send(writer.getWorkspace(), Index_);

                writer.SetOpcode(0xA103);
                writer.Append<byte>(01);
                ServerSocket.Send(writer.getWorkspace(), Index_);
            }
        }

        private static void On_7007(byte[] Packet, int Index_)
        {
            if (Packet[6] == 0x02)
            {
                /*writer.SetOpcode(0xB007);
                writer.Append<byte>(02);
                writer.Append<ushort>(0x0001);
                ServerSocket.Send(writer.getWorkspace(), Index_);*/
                byte[] b = convert.ToByteArray("520007B000000201016D3A0000030046497933512F694C06000000005401640000000C290000B61500000002000208D42E0000371C2F000037F82E0000375A32000037402F000037882F000037622B0000378E2800000000");
                ServerSocket.Send(b, Index_);
            }
        }

        private static void On_7001(byte[] Packet, int Index_)
        {
            byte[] b = convert.ToByteArray("010001B0000001");
            ServerSocket.Send(b, Index_);
        }

    }
}