using Google.Protobuf.WellKnownTypes;
using ServerBase;
using ServerCommon;
using ServerCore;

namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.C2GS_REQ_JOIN_BATTLE_INSTANCE), typeof(JoinBattleInstancePacketHandler), typeof(GameLoginListener))]
public class JoinBattleInstancePacketHandler : PacketRecvHandler
{
    public override async Task<Result> onProcessPacket(ISession entityWithSession, Google.Protobuf.IMessage recvMessage)
    {
        var err_msg = string.Empty;
        
        var player = entityWithSession as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => $"player is null !!!");

        var req_msg = recvMessage as ClientToGame;
        ArgumentNullReferenceCheckHelper.throwIfNull(req_msg, () => $"req_msg is null !!! - {player.toBasicString()}");

        var request = req_msg.Request.ReqJoinBattleInstance;
        ArgumentNullReferenceCheckHelper.throwIfNull(request, () => $"request is null !!! - {player.toBasicString()}");

        var result = parameterValidationCheck(player, request);
        if (result.isFail())
        {
            send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
            return result;
        }

        Int32 event_id = request.EventId;
        var packet_create_time = request.PacketCreateTime;
        if (packet_create_time is not null)
        {
            Log.getLogger().info($"Join Battle Instance packet received event_id : {event_id}, packetCreateTime : {packet_create_time}, player : {player.toBasicString()}");
        }
        
        //Battle Instance는 결과적으로 eventId의해 처리될 확률이 높다. 이거 코드 수정 필요
        if (event_id == 0)
        {
            var server_config = ServerConfigHelper.getServerConfig();
            NullReferenceCheckHelper.throwIfNull(server_config, () => $"server_config is null !!!");

            // ServiceType.Dev 타입일 경우 무조건 치트 사용이 가능 하다. !!!
            if (server_config.ServiceType.Equals(ServiceType.Dev.ToString()))
            {
                return await processPacketByLandId(player, request);
            }
            else
            {
                err_msg = $"event_id must have over zero !!! : event_id:{event_id} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.InstanceMetaDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());
                
                send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
                return result;    
            }
        }
        else
        {
            return await processPacketByEventId(player, event_id);
        }
    }

    private async Task<Result> processJoinBattleInstance(Player player, Int32 eventId, Int32 instanceId, Timestamp eventStartTS)
    {
        var result = new Result();
        string err_msg = string.Empty;
        
        Log.getLogger().info($"player : {player.getUserGuid()} join battle instance eventId : {eventId}, intanceId : {instanceId}, evenstStartTS : {eventStartTS}");
        
        if (!MetaData.Instance._IndunTable.TryGetValue(instanceId, out var indun_meta_data))
        {
            err_msg = $"Failed to MetaData.TryGetValue() !!! : instanceMetaId:{instanceId} - {player.toBasicString()}";
            result.setFail(ServerErrorCode.InstanceMetaDataNotFound, err_msg);
            Log.getLogger().error(result.toBasicString());

            send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
            return result;
        }
        
        //3. indun content type이 battleRoom이 아니면 리턴
        var server_connect_info = new ServerConnectInfo();
        var business_logs = new List<ILogInvoker>();
        if (indun_meta_data.ContentsType != ContentsType.BattleRoom)
        {
            err_msg = $"Failed to MetaData.TryGetValue() !!! : instanceMetaId:{instanceId} - {player.toBasicString()}";
            result.setFail(ServerErrorCode.BattleRoomContentsTypeOnly, err_msg);
            send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
            return result;
        }
        
        
        var game_zone_move_action = player.getEntityAction<GameZoneMoveAction>();
        NullReferenceCheckHelper.throwIfNull(game_zone_move_action, () => $"game_zone_move_action is null !!! - {player.toBasicString()}");
        
        var server_logic = GameServerApp.getServerLogic();
        
        var fn_transaction_runner = async delegate ()
        {
            var result = new Result();

            (result, server_connect_info, business_logs) = await game_zone_move_action.tryJoinBattleInstance(player.getUserGuid(), eventId, eventStartTS, indun_meta_data);
            if (result.isFail())
            {
                err_msg = $"Failed to tryJoinInstance() !!! : {result.toBasicString()}";
                Log.getLogger().error(err_msg);

                send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
                return result;
            }

            var batch = new QueryBatch<QueryRunnerWithDocument>(player, LogActionType.JoinInstance.ToString(), server_logic.getDynamoDbClient(), true);
            {
                batch.addQuery(new DBQWriteToAttributeAllWithTransactionRunner());
                batch.addQuery(new QueryFinal());
            }
            
            //if(address_business_log != null) batch.appendBusinessLog(address_business_log);
            if(business_logs.Count > 0) batch.appendBusinessLogs(business_logs);

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

                send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
                return result;
            }
            
            //이거 쓸지 안쓸지 모르겠군...일단 주석 처리
            //await QuestManager.It.QuestCheckWithoutTransaction(player, new QuestInstance(EQuestEventTargetType.INSTANCE, EQuestEventNameType.ENTERED, request.LandId, request.Floor));
            //QuestNotifyHelper.send_GS2C_NTF_QUEST_REWARD(player, common_result);
            //var common_result = found_transaction_runner.getCommonResult();
            //var found_transaction_runner = player.findTransactionRunner(TransactionIdType.PrivateContents);
            //NullReferenceCheckHelper.throwIfNull(found_transaction_runner, () => $"found_transaction_runner is null !!! - {player.toBasicString()}");
            
            send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, server_connect_info);
            
            return result;
        };

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

        return result;
    }

    private async Task<Result> processPacketByEventId(Player player, Int32 eventId)
    {
        var result = new Result();
        string err_msg = string.Empty;

        if (false == BattleInstanceManager.It.getSystemBattleEvent(eventId, out var systemBattleEvent))
        {
            err_msg = $"not exist system battle evetn : eventId:{eventId} - {player.toBasicString()}";
            result.setFail(ServerErrorCode.BattleInstanceNotExistEventInfo, err_msg);
            Log.getLogger().error(result.toBasicString());

            send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
            return result;
        }
        
        //이벤트 인스턴스 시작시간, 종료 시간 계산해서 들어가게
        var now = DateTimeHelper.Current;
        var joinable_time = BattleRoomHelper.calculateRoomJoinableTime(systemBattleEvent.m_start_time, systemBattleEvent.m_ffa_config_data_id, systemBattleEvent.m_round_count);
        if (joinable_time < now)
        {
            err_msg = $"already joinable_time passed : eventId:{eventId} joinable_time : {joinable_time} - {player.toBasicString()}";
            result.setFail(ServerErrorCode.BattleInstanceClosingTime, err_msg);
            Log.getLogger().error(result.toBasicString());

            send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
            return result;
        }

        var instance_meta_id = systemBattleEvent.m_instance_id;
        return await processJoinBattleInstance(player, eventId, instance_meta_id, Timestamp.FromDateTime(systemBattleEvent.m_start_time));



    }

    private async Task<Result> processPacketByLandId(Player player, ClientToGameReq.Types.C2GS_REQ_JOIN_BATTLE_INSTANCE request)
    {
        Int32 land_id = request.LandId;
        Int32 floor_id = request.Floor;
        Int32 building_id = request.BuildingId;

        var result = new Result();
        string err_msg = string.Empty;
        
        var game_zone_move_action = player.getEntityAction<GameZoneMoveAction>();
        NullReferenceCheckHelper.throwIfNull(game_zone_move_action, () => $"game_zone_move_action is null !!! - {player.toBasicString()}");
        
        //RoomMapTree 정로를 이용해서 Instance 정보 호출
        (result, var room_map_tree, var address_business_log) = MapHelper.tryGetRoomMapTree(land_id, floor_id, building_id);
        if (result.isFail() || null == room_map_tree)
        {
            err_msg = $"Failed to tryGetRoomMapTree() !!! : {result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);

            send_S2C_ACK_JOIN_BATTLE_INSTANCE(player, result, null);
            return result;
        }
        
        //instance meta id를 이용해 IndunMetadata 정보 호출
        var instance_meta_id = room_map_tree.InstanceMetaId;
        return await processJoinBattleInstance(player, 0, instance_meta_id, Timestamp.FromDateTime(DateTimeHelper.MinTime.Date));
        
    }

    private Result parameterValidationCheck(Player player, ClientToGameReq.Types.C2GS_REQ_JOIN_BATTLE_INSTANCE request)
    {
        var server_logic = GameServerApp.getServerLogic();
        var server_config = server_logic.getServerConfig();
        bool is_battle_system_active = server_config.BattleSystemEnable;

        string err_msg = string.Empty;
        var result = new Result();
        
        if (false == is_battle_system_active)
        {
            err_msg = $"is_battle_system_active is false!!!";
            result.setFail(ServerErrorCode.BattleInstanceInActive, err_msg);
            Log.getLogger().error(err_msg);
            return result;
        }
        return result;
    }

    public static bool send_S2C_ACK_JOIN_BATTLE_INSTANCE(Player owner, Result result, ServerConnectInfo? serverConnectInfo)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

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

        if (result.isSuccess() && serverConnectInfo != null)
        {
            ack_packet.Response.AckJoinBattleInstance.InstanceServerConnectInfo = serverConnectInfo;
        }

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

        return true;
    }
}