using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;


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


using static ClientToGameRes.Types;



namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.C2GS_REQ_LAND_INFO), typeof(LandInfoPacketHandler), typeof(GameLoginListener))]
internal class LandInfoPacketHandler : PacketRecvHandler
{
    public static bool send_S2C_ACK_LAND_INFO(Player owner, Result result, GS2C_ACK_LAND_INFO res)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

        ack_packet.Response.ErrorCode = result.ErrorCode;
        ack_packet.Response.AckLandInfo = res;

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

        var player = entityWithSession as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => $"player is null !!!");

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

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

        var res = new GS2C_ACK_LAND_INFO();

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

            if (!MapManager.Instance.GetLandMapTree(request.LandId, out var land_map_tree))
            {
                err_msg = $"Failed to GetLandMapTree() !!! : LandMetaId:{request.LandId} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.LandMapTreeDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                send_S2C_ACK_LAND_INFO(player, result, res);
                return result;
            }

            var building_map_tree = land_map_tree.ChildBuildingMapTree;
            if (building_map_tree == null)
            {
                err_msg = $"Not Exist LandMapTree ChildBuilding !!! : LandMap:{land_map_tree.LandMapFileName}";
                result.setFail(ServerErrorCode.LandMapTreeChildBuildingNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                send_S2C_ACK_LAND_INFO(player, result, res);
                return result;
            }

            if (!MetaData.Instance._BuildingTable.TryGetValue(building_map_tree.BuildingMetaId, out var building_meta_data))
            {
                err_msg = $"Failed to MetaData.TryGetValue() !!! : buildingMetaId:{building_map_tree.BuildingMetaId} - {player.toBasicString()}";
                result.setFail(ServerErrorCode.BuildingMetaDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                send_S2C_ACK_LAND_INFO(player, result, res);
                return result;
            }

            var count = building_map_tree.ChildRoomMapTrees.Count;

            res.RentalLandInfo = new()
            {
                LandId = land_map_tree.LandId,
                BuildingId = building_map_tree.BuildingMetaId,
                RentalCount = count
            };

            var batch = new QueryBatchEx<QueryRunnerWithDocument>(player, LogActionType.None, server_logic.getDynamoDbClient());
            {
                batch.addQuery(new DBQWriteToAttributeAllWithTransactionRunner());
                batch.addQuery(new QueryFinal());
            }

            result = await QueryHelper.sendQueryAndBusinessLog(batch);
            if (result.isFail())
            {
                send_S2C_ACK_LAND_INFO(player, result, res);
                return result;
            }

            send_S2C_ACK_LAND_INFO(player, result, res);
            return result;
        };

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

        return result;
    }
}