using FFXIVClassic.Common;
using FFXIVClassic_World_Server.DataObjects;
using FFXIVClassic_World_Server.Packets.Receive;
using FFXIVClassic_World_Server.Packets.Send.Login;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace FFXIVClassic_World_Server
{
    class PacketProcessor
    {
        /*
        Session Creation:

            Get 0x1 from server
            Send 0x7
            Send 0x2

        Zone Change:

            Send 0x7
            Get 0x8 - Wait??
            Send 0x2
        */


        Server mServer;
        List<ClientConnection> mConnections;

        public PacketProcessor(Server server)
        {           
            mServer = server;
        }     

        public void ProcessPacket(ClientConnection client, BasePacket packet)
        {                      
            //if (packet.header.isCompressed == 0x01)                       
            //    BasePacket.DecryptPacket(client.blowfish, ref packet);

            List<SubPacket> subPackets = packet.GetSubpackets();
            foreach (SubPacket subpacket in subPackets)
            {
                //Initial Connect Packet, Create session
                if (subpacket.header.type == 0x01)
                {

                    #region Hardcoded replies                                
                    packet.DebugPrintPacket();
                    byte[] reply1Data = {
                                            0x01, 0x00, 0x00, 0x00, 0x28, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                                            0x18, 0x00, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xFD, 0xFF, 0xFF,
                                            0xE5, 0x6E, 0x01, 0xE0, 0x00, 0x00, 0x00, 0x0
                                        };

                    byte[] reply2Data = {
                                            0x01, 0x00, 0x00, 0x00, 0x28, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                                            0x38, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x2B, 0x5F, 0x26,
                                            0x66, 0x00, 0x00, 0x00, 0xC8, 0xD6, 0xAF, 0x2B, 0x38, 0x2B, 0x5F, 0x26, 0xB8, 0x8D, 0xF0, 0x2B,
                                            0xC8, 0xFD, 0x85, 0xFE, 0xA8, 0x7C, 0x5B, 0x09, 0x38, 0x2B, 0x5F, 0x26, 0xC8, 0xD6, 0xAF, 0x2B,
                                            0xB8, 0x8D, 0xF0, 0x2B, 0x88, 0xAF, 0x5E, 0x26
                                        };

                    BasePacket reply1 = new BasePacket(reply1Data);
                    BasePacket reply2 = new BasePacket(reply2Data);

                    //Write Timestamp into Reply1
                    using (MemoryStream mem = new MemoryStream(reply1.data))
                    {
                        using (BinaryWriter binReader = new BinaryWriter(mem))
                        {
                            binReader.BaseStream.Seek(0x14, SeekOrigin.Begin);
                            binReader.Write((UInt32)Utils.UnixTimeStampUTC());
                        }
                    }
                    #endregion

                    HelloPacket hello = new HelloPacket(packet.data);

                    if (packet.header.connectionType == BasePacket.TYPE_ZONE)
                        mServer.AddSession(client, Session.Channel.ZONE, hello.sessionId);
                    else if (packet.header.connectionType == BasePacket.TYPE_CHAT)
                        mServer.AddSession(client, Session.Channel.CHAT, hello.sessionId);                    
                }
                //Ping from World Server
                else if (subpacket.header.type == 0x07)
                {
                    SubPacket init = Login0x7ResponsePacket.BuildPacket(0x50);
                    client.QueuePacket(BasePacket.CreatePacket(init, true, false));
                }
                //Zoning Related
                else if (subpacket.header.type == 0x08)
                {
                    //Response, client's current [actorID][time]
                    //BasePacket init = Login0x7ResponsePacket.BuildPacket(BitConverter.ToUInt32(packet.data, 0x10), Utils.UnixTimeStampUTC(), 0x07);
                    //client.QueuePacket(init);
                    packet.DebugPrintPacket();
                }
                //Game Message
                else if (subpacket.header.type == 0x03)
                {
                    //Send to the correct zone server
                    uint targetSession = subpacket.header.targetId;

                    if (mServer.GetSession(targetSession).routing1 != null)
                        mServer.GetSession(targetSession).routing1.SendPacket(subpacket);

                    if (mServer.GetSession(targetSession).routing2 != null)
                        mServer.GetSession(targetSession).routing2.SendPacket(subpacket);
                }
                else
                    packet.DebugPrintPacket();
            }
        }        

    }
}