using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


using ServerCore;
using ServerBase;
using ServerCommon;
using ServerCommon.BusinessLogDomain;
using MetaAssets;


using static ClientToGameReq.Types;
using static ClientToGameRes.Types;


using SESSION_ID = System.Int32;
using WORLD_META_ID = System.UInt32;
using META_ID = System.UInt32;
using ENTITY_GUID = System.String;
using ACCOUNT_ID = System.String;
using OWNER_GUID = System.String;
using USER_GUID = System.String;
using CHARACTER_GUID = System.String;
using ITEM_GUID = System.String;


namespace GameServer.PacketHandler;

//=============================================================================================
// C2GS_REQ_NPC_TOUCH 적용 후 하기 코드 제거 한다. - kangms
//=============================================================================================

[PacketHandler(typeof(ClientToGameReq), typeof(C2GS_REQ_UGC_NPC_TOUCH), typeof(UgcNpcTouchPacketHandler), typeof(GameLoginListener))]
public class UgcNpcTouchPacketHandler : PacketRecvHandler
{
    public static bool send_GS2C_ACK_UGC_NPC_TOUCH( Player player, Result result
                                                  , GS2C_ACK_UGC_NPC_TOUCH? ackMessage = null)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

        ack_packet.Response.ErrorCode = result.ErrorCode;
        ack_packet.Response.AckUgcNpcTouch = new();

        if (ServerErrorCode.Success == result.ErrorCode)
        {
            ArgumentNullReferenceCheckHelper.throwIfNull(ackMessage, () => $"ackMessage is null !!! - {player.toBasicString()}");
            ack_packet.Response.AckUgcNpcTouch = ackMessage;
        }

        if (false == GameServerApp.getServerLogic().onSendPacket(player, ack_packet))
        {
            return false;
        }

        return true;
    }

    public override async Task<Result> onProcessPacket(ISession entityWithSession, Google.Protobuf.IMessage recvMessage)
    {
        var result = new Result();
        var err_msg = string.Empty;

        var player = entityWithSession as Player;
        ArgumentNullReferenceCheckHelper.throwIfNull(player, () => $"player is null !!!");
        var recv_msg = recvMessage as ClientToGame;
        ArgumentNullReferenceCheckHelper.throwIfNull(recv_msg, () => $"recv_msg is null !!! - {player.toBasicString()}");
        var request = recv_msg.Request.ReqUgcNpcTouch;
        ArgumentNullReferenceCheckHelper.throwIfNull(request, () => $"request is null !!! - {player.toBasicString()}");

        result = await tryUgcNpcTouch(player, request);
        if (result.isFail())
        {
            return result;
        }

        return result;
    }

    public static async Task<Result> tryUgcNpcTouch(Player player, C2GS_REQ_UGC_NPC_TOUCH request)
    {
        var result = new Result();
        var err_msg = string.Empty;

        var player_action = player.getEntityAction<PlayerAction>();
        NullReferenceCheckHelper.throwIfNull(player_action, () => $"player_action is null !!! - {player.toBasicString()}");

        var selected_character = player_action.getSelectedCharacter();
        if (null == selected_character)
        {
            err_msg = $"Not selected Character !!! - {player.toBasicString()}";
            result.setFail(ServerErrorCode.CharacterNotSelected, err_msg);
            Log.getLogger().error(result.toBasicString());

            send_GS2C_ACK_UGC_NPC_TOUCH(player, result);
            return result;
        }

        var found_ugc_npc = player_action.findUgcNpc(request.ToTouchUgcNpcMetaGuid);
        if(null == found_ugc_npc)
        {
            err_msg = $"Not found Ugc Npc !!! : ugcNpcMetaGuid:{request.ToTouchUgcNpcMetaGuid} - {player.toBasicString()}";
            result.setFail(ServerErrorCode.UgcNpcNotFound, err_msg);
            Log.getLogger().error(result.toBasicString());

            send_GS2C_ACK_UGC_NPC_TOUCH(player, result);
            return result;
        }

        var fn_ugc_npc_touch = async delegate ()
        {
            var result = new Result();

            var ugc_npc_action = found_ugc_npc.getEntityAction<UgcNpcAction>();
            NullReferenceCheckHelper.throwIfNull(ugc_npc_action, () => $"ugc_npc_action is null !!! - {player.toBasicString()}");

            result = await ugc_npc_action.tryRegisterCharacterWithAiChatServer(player);
            if (result.isFail())
            {
                err_msg = $"Failed to tryCreateUgcNpc() !!! : {result.toBasicString()} - {player.toBasicString()}";
                Log.getLogger().error(err_msg);

                send_GS2C_ACK_UGC_NPC_TOUCH(player, result);
                return result;
            }

            result = await player_action.commitTransaction(TransactionIdType.PrivateContents);
            if (result.isFail())
            {
                err_msg = $"Failed to commitTransaction() !!! : {result.toBasicString()} - {player.toBasicString()}";
                Log.getLogger().error(err_msg);

                send_GS2C_ACK_UGC_NPC_TOUCH(player, result);
                return result;
            }

            var ack_packet = new GS2C_ACK_UGC_NPC_TOUCH();
            ack_packet.UgcNpcMetaGuid = request.ToTouchUgcNpcMetaGuid;

            send_GS2C_ACK_UGC_NPC_TOUCH(player, result, ack_packet);

            return result;
        };

        result = await player.runTransactionRunnerSafely(TransactionIdType.PrivateContents, "UgcNpcTouch", fn_ugc_npc_touch);
        if (result.isFail())
        {
            err_msg = $"Failed to runTransactionRunnerSafely() !!! : {result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
        }

        return result;
    }
}