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 ClientToGameMessage.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;
using NICKNAME = System.String;
using Org.BouncyCastle.Asn1.Ocsp;
using Amazon.S3.Model;



namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.ChangeNickNameReq), typeof(NicknameChangePacketHandler), typeof(GameLoginListener))]

public class NicknameChangePacketHandler : PacketRecvHandler
{
    public static bool send_S2C_ACK_NICKNAME_CHANGE(Player owner, Result result)
    {
        ArgumentNullException.ThrowIfNull(owner, $"owner is null !!!");
        ArgumentNullException.ThrowIfNull(result, $"result is null !!! - {owner.toBasicString()}" );

        var server_logic = GameServerApp.getServerLogic();
        ArgumentNullException.ThrowIfNull(server_logic, $"server_logic is null !!! - {owner.toBasicString()}");

        var err_msg = string.Empty;

        var ack_packet = new ClientToGame();
        ack_packet.Response = new();

        var nickname_attribute = owner.getOriginEntityAttribute<NicknameAttribute>();
        ArgumentNullException.ThrowIfNull(nickname_attribute, $"nickname_attribute is null !!! - {owner.toBasicString()}");

        ack_packet.Response.ErrorCode = result.ErrorCode;
        ack_packet.Response.ChangeNickNameRes = new();
        ack_packet.Response.ChangeNickNameRes.NickName = nickname_attribute.Nickname;

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

        return true;
    }

    public override async Task<Result> onProcessPacket(ISession entityWithSession, Google.Protobuf.IMessage recvMessage)
    {
        var player = entityWithSession as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => $"player is null !!!");

        var login_msg = recvMessage as ClientToGame;
        NullReferenceCheckHelper.throwIfNull(login_msg, () => $"login_msg is null !!! - {player.toBasicString()}");
        var request = login_msg.Request.ChangeNickNameReq;
        NullReferenceCheckHelper.throwIfNull(request, () => $"request is null !!! - {player.toBasicString()}");

        var result = new Result();
        var err_msg = string.Empty;

        var server_logic = GameServerApp.getServerLogic();
        NullReferenceCheckHelper.throwIfNull(server_logic, () => $"server_logic is null !!! - {player.toBasicString()}");

        var server_config = server_logic.getServerConfig();
        NullReferenceCheckHelper.throwIfNull(server_config, () => $"server_config is null !!! - {player.toBasicString()}");

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

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

        if (false == user_create_or_load_action.isCreatedUserNickname())
        {
            result = await tryCreateUserNickname(player, request.NickName);
            if (result.isFail())
            {
                err_msg = $"Failed to tryCreateUserNickname() !!! : {result.toBasicString()} - {player.toBasicString()}";
                Log.getLogger().error(err_msg);

                send_S2C_ACK_NICKNAME_CHANGE(player, result);
                return result;
            }

            if (true == server_config.AuthRule.TestUserAllow)
            {
                // 테스트 유저일 경우 초기화 설정을 적용 한다.
                result = await user_create_or_load_action.initializeUser4Test();
                if (result.isFail())
                {
                    send_S2C_ACK_NICKNAME_CHANGE(player, result);
                    return result;
                }
            }

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

                send_S2C_ACK_NICKNAME_CHANGE(player, result);
                return result;
            }

            user_create_or_load_action.updateCompletedLoadUser();

            send_S2C_ACK_NICKNAME_CHANGE(player, result);

            if (result.isSuccess())
            {
                nickname_action.send_GS2C_NTF_NICKNAME_CHANGE(request.NickName);

                //캐릭터 생성후 최초 1번 보내주는 Noties
                player.send_GS2C_NTF_SYSTEM_QUEST_METAS();
                await player.send_GS2C_NTF_SYSTEM_QUESTS();
                await QuestManager.It.PeriodRepeatQuestCheck(player);
            }
        }
        else
        {
            result = await tryChangeUserNickname(player, request.NickName);
            if (result.isFail())
            {
                err_msg = $"Failed to tryChangeUserNickname() !!! : {result.toBasicString()} - {player.toBasicString()}";
                Log.getLogger().error(err_msg);

                send_S2C_ACK_NICKNAME_CHANGE(player, result);
                return result;
            }

            nickname_action.send_GS2C_NTF_NICKNAME_CHANGE(request.NickName);
        }

        return result;
    }

    private async Task<Result> tryCreateUserNickname(Player player, NICKNAME newNickname)
    {
        var server_logic = GameServerApp.getServerLogic();
        NullReferenceCheckHelper.throwIfNull(server_logic, () => $"server_logic is null !!! - {player.toBasicString()}");

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

        var result = new Result();
        var err_msg = string.Empty;

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

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

                return result;
            }

            return result;
        };

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

            return result;
        }

        return result;
    }

    private async Task<Result> tryChangeUserNickname(Player player, NICKNAME newNickname)
    {
        var player_action = player.getEntityAction<PlayerAction>();
        NullReferenceCheckHelper.throwIfNull(player_action, () => $"player_action is null !!! - {player.toBasicString()}");

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

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

        var result = new Result();
        var err_msg = string.Empty;

        // 캐릭터 외형 설정이 완료 상태일 경우 닉네임 변경을 허용하지 않는다 !!! - kangms
        if (true == character_action.isCompletedApprearance())
        {
            err_msg = $"Already Customizing Completed !!! - {selected_character.toBasicString()}";
            result.setFail(ServerErrorCode.CharacterCustomizingAlreadyCompleted, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }

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

        var fn_user_nickname_change = async delegate ()
        {
            result = await nickname_action.tryChangeNickname(newNickname);
            if (result.isFail())
            {
                err_msg = $"Failed to tryChangeNickname() !!! : {result.toBasicString()} - {player.toBasicString()}";
                Log.getLogger().error(err_msg);

                return result;
            }

            return result;
        };

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

        return result;
    }
}