using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;
using BrewMonster.Network;
using BrewMonster.Scripts.UI;
using BrewMonster.UI;
using CSNetwork;
using CSNetwork.GPDataType;
using CSNetwork.Protocols;

namespace BrewMonster.Scripts.Chat
{
    public static class Chat_GameSession
    {
        private static List<Protocol> m_aPendingProtocols = new();
        private static List<int> m_aPendingPlayers = new();

        public static void AddElemForPendingProtocols(Protocol p)
        {
            m_aPendingProtocols.Add(p);
        }
        
        //	Add one player's id to a buffer in order to get his name later
        public static void AddChatPlayerID(int id)
        {
            if (EC_Game.GetGameRun().GetPlayerName(id, false) != null)
            {
                m_aPendingPlayers.Add(id);
            }
        }
        
        public static bool ShouldBlockByLevel(chatmessage p)
        {
            int levelBlock = EC_Game.GetConfigs().GetBlackListSettings().levelBlock;
            if (p.Srclevel > 0 && p.Srclevel < levelBlock)
            {
                if ((ChatChannel)p.Channel is ChatChannel.GP_CHAT_LOCAL
                    or ChatChannel.GP_CHAT_WHISPER
                    or ChatChannel.GP_CHAT_TRADE)
                {
                    if (!EC_Game.GetGameRun().GetHostPlayer().IsOmitBlocking(p.Srcroleid))
                    {
                        // should be filted by level
                        return true;
                    }
                }
            }

            return false;
        }

        public static bool PolicyResolver(Protocol pProtocol, chatmessage p, ref string strTemp)
        {
            if (IsPolicyChat(p))
            {
                // Todo: check logic
                CHAT_S2C.PolicyChatParameter pPolicyChatPara = CHAT_S2C.CreatPolicyChatParameter(p.Data);
                if (pPolicyChatPara != null && p.Data.Size > 0)
                {
                    strTemp = ("???");
                }
                else
                {
                    if (pPolicyChatPara != null && !pPolicyChatPara.IsNameReady())
                    {
                        pPolicyChatPara.GetNameFromServer();
                        m_aPendingProtocols.Add(pProtocol);
                        return false;
                    }

                    strTemp = CECUIHelper.PolicySpecialCharReplace(strTemp, pPolicyChatPara);
                    if (CanFormatCoordText(p))
                    {
                        //strTemp = CECUIHelper.FormatCoordText(strTemp);
                    }
                }
                //int strLen = strTemp.GetLength();
                //wcsncpy(szMsg, strTemp, strLen);
                //szMsg[strLen] = 0;
            }
            else
            {
                //AUI_ConvertChatString(strTemp, szMsg, false);
            }

            return true;
        }

        /*private void AUI_ConvertChatString(string pszChat, string pszConv, bool bName)
        {
            int i, nLen = 0;
            if (pszChat != null || pszConv  != null)
                return;

            pszConv[0] = 0;
            for( i = 0; i < (int)a_strlen(pszChat); i++ )
            {
                if( pszChat[i] == '^' )
                {
                    pszConv[nLen] = '^';
                    pszConv[nLen + 1] = '^';
                    nLen += 2;
                }
                else if( pszChat[i] == '&' )
                {
                    pszConv[nLen] = '^';
                    pszConv[nLen + 1] = '&';
                    nLen += 2;
                }
                else
                {
                    pszConv[nLen] = pszChat[i];
                    nLen++;
                }
            }
            pszConv[nLen] = 0;
        }*/

        private static bool IsPolicyChat(chatmessage p)
        {
            bool bOK = false;
            switch (p.Channel)
            {
                case (byte)ChatChannel.GP_CHAT_LOCAL: //	ÃæÏò¸Ã NPC ¿É¼ûÓòÖÐËùÓÐÍæ¼Ò
                    if (p.Srcroleid == 0 || //	£¨²ßÂÔº°»°Öбê¼Ç $A £©
                        ISNPCID(p.Srcroleid))
                    {
                        //	£¨²ßÂÔº°»°ÖÐÎÞ±ê¼Ç  £©
                        bOK = true;
                    }

                    break;
                case (byte)ChatChannel.GP_CHAT_BATTLE: //	ÃæÏò³ÇÕ½¸±±¾Ö¸¶¨ÕóÓª»òÈ«²¿Íæ¼Òº°»°£¨²ßÂÔº°»°Öбê¼Ç $F¡¢$T £©
                    if (p.Srcroleid == 0)
                    {
                        //	Ϊ·ÀÒÔºóÓб仯£¬Ôö¼Ó´ËÅжÏ
                        bOK = true;
                    }

                    break;
                case (byte)ChatChannel.GP_CHAT_BROADCAST: //	ÃæÏòÈ«ÌåÔÚÏßÍæ¼Ò£¨²ßÂÔº°»°Öбê¼Ç $S £©
                    if (p.Srcroleid == 0)
                    {
                        bOK = true;
                    }

                    break;
                case (byte)ChatChannel.GP_CHAT_INSTANCE
                    : //	ÃæÏò¸±±¾ÖÐÍæ¼Ò£¨²ßÂÔº°»°Öбê¼Ç $I £©£¨ $X ±ê¼Çʱ p->srcroleid == 1£¬´Ëʱֻ³öÏÖÔÚÆÁÄ»ÖÐÑ룩
                    if (p.Srcroleid == 0 || p.Srcroleid == 1)
                    {
                        bOK = true;
                    }

                    break;
            }

            return bOK;
        }

        static bool ISNPCID(int id)
        {
            uint uid = (uint)id;
            return (uid & 0x80000000) != 0 &&
                   (uid & 0x40000000) == 0;
        }

        static bool CanFormatCoordText(chatmessage p)
        {
            bool bOK = false;
            switch (p.Channel)
            {
                case (byte)ChatChannel.GP_CHAT_LOCAL: //	ÃæÏò¸Ã NPC ¿É¼ûÓòÖÐËùÓÐÍæ¼Ò
                    if (p.Srcroleid == 0 || //	£¨²ßÂÔº°»°Öбê¼Ç $A £©
                        ISNPCID(p.Srcroleid))
                    {
                        //	£¨²ßÂÔº°»°ÖÐÎÞ±ê¼Ç  £©
                        bOK = true;
                    }

                    break;
                case (byte)ChatChannel.GP_CHAT_BATTLE: //	ÃæÏò³ÇÕ½¸±±¾Ö¸¶¨ÕóÓª»òÈ«²¿Íæ¼Òº°»°£¨²ßÂÔº°»°Öбê¼Ç $F¡¢$T £©
                    if (p.Srcroleid == 0)
                    {
                        //	Ϊ·ÀÒÔºóÓб仯£¬Ôö¼Ó´ËÅжÏ
                        bOK = true;
                    }

                    break;
                case (byte)ChatChannel.GP_CHAT_BROADCAST: //	ÃæÏòÈ«ÌåÔÚÏßÍæ¼Ò£¨²ßÂÔº°»°Öбê¼Ç $S £©
                    if (p.Srcroleid == 0)
                    {
                        bOK = true;
                    }

                    break;
                case (byte)ChatChannel.GP_CHAT_INSTANCE: //p->srcroleid == 1 ʱ²»½øÐÐ×ø±êµÄÌæ»»
                    if (p.Srcroleid == 0)
                    {
                        bOK = true;
                    }

                    break;
            }

            return bOK;
        }

        public static bool HanldeGPChatSystem(chatmessage p, bool bCalledagain)
        {
            /*string strMsg = "";
            switch (p.Srcroleid)
            {
                case 1: //CMSG_BIDSTART
                case 2: //CMSG_BIDEND
                case 3: //CMSG_BATTLESTART
                case 4: //CMSG_BATTLEEND
                case 6: //CMSG_BONUSSEND
                case 7: //CMSG_SPECIAL
                {
                    if (!bCalledagain)
                    {
                        List<int, int> pending;
                        if (!OnBattleChatMessage(p, pending))
                        {
                            if (pending.GetSize() > 0)
                            {
                                GetFactionInfo(pending.GetSize(), pending.GetData());
                                m_aPendingProtocols.Add(pProtocol);
                                return false;
                            }
                        }
                    }
                    else
                    {
                        if (!OnBattleChatMessage(p, NULL))
                        {
                            return false;
                        }
                    }

                    return true;
                }
            }

            return true;
        }

        public static bool OnBattleChatMessage(chatmessage p, AArray<int, int> pPendingFactions)
        {
            var pGameUI = g_pGame.GetGameRun().GetUIManager().GetInGameUIMan();
            var pDlgGuildMap = (CDlgGuildMap)pGameUI.GetDialog("Win_GuildMap");

            var info = GlobalData.GetDomainInfos();
            var pMan = g_pGame.GetFactionMan();

            string strMsg = string.Empty;

            if (pPendingFactions != null)
            {
                pPendingFactions.RemoveAll();
            }

            switch (p.srcroleid)
            {
                case 1: // CMSG_BIDSTART
                {
                    strMsg = pGameUI.GetStringFromTable(4001);
                    break;
                }

                case 2: // CMSG_BIDEND
                {
                    int group = p.msg.Size / (sizeof(short) + 2 * sizeof(uint));
                    strMsg = pGameUI.GetStringFromTable(4002);

                    if (group == 0)
                        break;

                    int idFaction = g_pGame.GetGameRun().GetHostPlayer().GetFactionID();

                    string strAttacker = "";
                    string strDefender = "";
                    string strAnnounce = "";

                    pDlgGuildMap.ClearMessage();

                    var o = new OctetsStream(p.msg);

                    for (; group > 0; group--)
                    {
                        short id = o.ReadShort();
                        uint owner = o.ReadUInt();
                        uint challenger = o.ReadUInt();

                        var finfo = pMan.GetFaction(challenger);

                        if ((int)challenger == idFaction)
                            strAttacker = pGameUI.GetStringFromTable(4500);
                        else if (finfo != null)
                            strAttacker = string.Format(pGameUI.GetStringFromTable(4499), finfo.GetName());
                        else if (pPendingFactions != null)
                            pPendingFactions.UniquelyAdd((int)challenger);

                        if (string.IsNullOrEmpty(strAttacker))
                        {
                            strMsg = "";
                            continue;
                        }

                        for (int i = 0; i < info.Count; i++)
                        {
                            if (info[i].id == id)
                            {
                                if (info[i].id_owner != 0)
                                {
                                    if (info[i].id_owner == idFaction)
                                        strDefender = pGameUI.GetStringFromTable(4500);
                                    else
                                    {
                                        var finfo2 = pMan.GetFaction(info[i].id_owner);

                                        if (finfo2 != null)
                                            strDefender = string.Format(
                                                pGameUI.GetStringFromTable(4499),
                                                finfo2.GetName());
                                        else if (pPendingFactions != null)
                                            pPendingFactions.UniquelyAdd(info[i].id_owner);
                                    }
                                }

                                if (string.IsNullOrEmpty(strDefender))
                                {
                                    strAnnounce = string.Format(
                                        pGameUI.GetStringFromTable(4511),
                                        strAttacker,
                                        info[i].name);
                                }
                                else
                                {
                                    strAnnounce = string.Format(
                                        pGameUI.GetStringFromTable(4512),
                                        strAttacker,
                                        strDefender,
                                        info[i].name);
                                }

                                if (pPendingFactions == null || pPendingFactions.GetSize() == 0)
                                {
                                    pDlgGuildMap.AddMessage(strAnnounce);
                                }

                                break;
                            }
                        }

                        strAttacker = "";
                        strDefender = "";
                    }

                    if ((pPendingFactions != null && pPendingFactions.GetSize() > 0) || string.IsNullOrEmpty(strMsg))
                    {
                        pDlgGuildMap.ClearMessage();
                        strMsg = "";
                    }

                    break;
                }

                case 3: // CMSG_BATTLESTART
                {
                    if (p.msg.Size < 2)
                        return false;

                    var os = new OctetsStream(p.msg);

                    byte id = os.ReadByte();
                    byte result = os.ReadByte();

                    for (int i = 0; i < info.Count; i++)
                    {
                        if (info[i].id == id)
                        {
                            strMsg = string.Format(
                                pGameUI.GetStringFromTable(4003),
                                info[i].name);

                            strMsg += pGameUI.GetStringFromTable(3900 + result);
                            break;
                        }
                    }

                    break;
                }

                case 4: // CMSG_BATTLEEND
                {
                    if (p.msg.Size < 1)
                        return false;

                    var os = new OctetsStream(p.msg);

                    byte id = os.ReadByte();

                    for (int i = 0; i < info.Count; i++)
                    {
                        if (info[i].id == id)
                        {
                            strMsg = string.Format(
                                pGameUI.GetStringFromTable(4004),
                                info[i].name);
                            break;
                        }
                    }

                    break;
                }

                case 6: // CMSG_BONUSSEND
                {
                    if (p.msg.Size < sizeof(uint) * 3)
                        return false;

                    var os = new OctetsStream(p.msg);

                    uint money = os.ReadUInt();
                    uint id = os.ReadUInt();
                    uint count = os.ReadUInt();

                    var item = CECIvtrItem.CreateItem(id, 0, count);

                    strMsg = string.Format(
                        pGameUI.GetStringFromTable(4006),
                        item.GetName(),
                        item.GetCount());

                    break;
                }

                case 7: // CMSG_SPECIAL
                {
                    if (p.msg.Size < sizeof(short))
                        return false;

                    var os = new OctetsStream(p.msg);

                    short id = os.ReadShort();

                    for (int i = 0; i < info.Count; i++)
                    {
                        if (info[i].id == id)
                        {
                            uint fid = info[i].id_owner;

                            if (fid > 0)
                            {
                                var finfo = pMan.GetFaction(fid);

                                if (finfo != null)
                                {
                                    strMsg = string.Format(
                                        pGameUI.GetStringFromTable(4007),
                                        info[i].name,
                                        info[i].name,
                                        finfo.GetName());
                                }
                                else if (pPendingFactions != null)
                                {
                                    pPendingFactions.UniquelyAdd((int)fid);
                                }
                            }
                            else
                            {
                                strMsg = string.Format(
                                    pGameUI.GetStringFromTable(4005),
                                    info[i].name);
                            }

                            break;
                        }
                    }

                    break;
                }

                default:
                    return false;
            }

            if ((pPendingFactions != null && pPendingFactions.GetSize() > 0) || string.IsNullOrEmpty(strMsg))
            {
                return false;
            }

            g_pGame.GetGameRun().AddChatMessage(
                strMsg,
                ChatChannel.GP_CHAT_BROADCAST,
                p.srcroleid,
                null,
                1,
                p.emotion);*/

            return true;
        }
        
        /*public static void OnTaskChatMessage(byte[] buffer, int size)
        {
            const int iNameLen = 20;

            int expectedSize = 4 * 5 + iNameLen * 2;

            if (size < expectedSize)
                return;

            int offset = 0;

            int self_id = BitConverter.ToInt32(buffer, offset); offset += 4;
            uint task_id = BitConverter.ToUInt32(buffer, offset); offset += 4;
            int channel = BitConverter.ToInt32(buffer, offset); offset += 4;
            int param = BitConverter.ToInt32(buffer, offset); offset += 4;
            int map_id = BitConverter.ToInt32(buffer, offset); offset += 4;

            // name (UTF16 20 chars)
            string name = Encoding.Unicode.GetString(buffer, offset, iNameLen * 2);
            name = name.TrimEnd('\0');

            var pTempl = EC_Game.GetTaskTemplateMan()
                .GetTaskTemplByID(task_id);

            if (pTempl == null)
                return;

            var tribute = pTempl.GetTribute();

            if (string.IsNullOrEmpty(tribute))
                return;

            // register player name
            EC_Game.GetGameRun().AddPlayerName(self_id, name);

            string strMsg = tribute;

            // replace $name
            strMsg = strMsg.Replace("$name", $"&{name}&");

            // replace $map
            string strMap = "";

            var instance = EC_Game.GetGameRun().GetInstance(map_id);

            if (instance != null)
                strMap = instance.GetName();

            strMsg = strMsg.Replace("$map", strMap);

            EC_Game.GetGameRun().AddChatMessage(strMsg, channel);
        }*/

        public class AUICTranslate
        {
            protected string m_AString = string.Empty;
            protected string m_AWString = string.Empty;

            public AUICTranslate()
            {
            }

            public string Translate(string str)
            {
                // In original C++ this likely performs UI charset translation.
                // Here we simply return the same string or store it.
                m_AString = str;
                return m_AString;
            }

            public string Translate(ReadOnlySpan<char> str)
            {
                m_AWString = new string(str);
                return m_AWString;
            }

            public string ReverseTranslate(string str)
            {
                // Reverse translation placeholder
                m_AString = str;
                return m_AString;
            }

            public string ReverseTranslate(ReadOnlySpan<char> str)
            {
                m_AWString = new string(str);
                return m_AWString;
            }
        }
    }
}