using System.Net;


using Google.Protobuf;


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


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


using META_ID = System.UInt32;


namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.C2GS_REQ_LAND_AUCTION_BID), typeof(LandAuctionBidPacketHandler), typeof(GameLoginListener))]
public class LandAuctionBidPacketHandler : PacketRecvHandler
{
    public override async Task onProcessPacketException(ISession entityWithSession, IMessage recvMessage
                                                       , Result errorResult)
    {
        await Task.CompletedTask;

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

        send_GS2C_ACK_LAND_AUCTION_BID(player, errorResult);
    }

    public static bool send_GS2C_ACK_LAND_AUCTION_BID(Player player, Result result, LandAuctionBidResult? bidResult = null)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

        ack_packet.Response.ErrorCode = result.ErrorCode;

        var ack_msg = new GS2C_ACK_LAND_AUCTION_BID();
        ack_packet.Response.AckLandAuctionBid = ack_msg;

        if(result.isSuccess())
        {
            ArgumentNullReferenceCheckHelper.throwIfNull(bidResult, () => $"bidResult is null !!! - {player.toBasicString()}");
            NullReferenceCheckHelper.throwIfNull(bidResult.TargetLandAuction, () => $"TargetLandAuction is null !!!");

            var land_auction_action = bidResult.TargetLandAuction.getEntityAction<LandAuctionAction>();
            NullReferenceCheckHelper.throwIfNull(land_auction_action, () => $"land_auction_action is null !!!");

            ack_msg.LandMetaId = (Int32)land_auction_action.getLandMetaId();
            ack_msg.BidType = bidResult.CurrentBidType;
            ack_msg.CommonResult = player.getCommonResult();
        }

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

        return true;
    }

    public override async Task<Result> onProcessPacket(ISession entityWithSession, IMessage recvMessage)
    {
        var player = entityWithSession as Player;
        ArgumentNullReferenceCheckHelper.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.ReqLandAuctionBid;
        ArgumentNullReferenceCheckHelper.throwIfNull(request, () => $"request is null !!! - {player.toBasicString()}");

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

        // 1. 활성화된 랜드 경매 상태 갱신을 시도 한다. (상태 갱신을 하지 못할 경우 Cache or DB 에서 최신의 정보를 참조) 
        (result, var check_result) = await tryCheckActivingLandAuction(request, player);
        if(result.isFail())
        {
            err_msg = $"Failed to tryCheckLandAuction() !!! : {result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            send_GS2C_ACK_LAND_AUCTION_BID(player, result);
            return result;
        }
        NullReferenceCheckHelper.throwIfNull(check_result, () => $"check_result is null !!! - {player.toBasicString()}");

        // 2. 갱신 상태를 참조하여 입찰을 시도 한다.
        result = await tryBidLandAuction(request, check_result, player);
        if (result.isFail())
        {
            err_msg = $"Failed to tryBidLandAuction() !!! : {result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            send_GS2C_ACK_LAND_AUCTION_BID(player, result);
            return result;
        }

        return result;
    }

    private static async Task<(Result, LandAuctionCheckResult?)> tryCheckActivingLandAuction( C2GS_REQ_LAND_AUCTION_BID reqPacket
                                                                                            , Player player )
    {
        var result = new Result();
        var err_msg = string.Empty;

        LandAuctionCheckResult? check_result = null;

        var fn_land_auction_check = async delegate ()
        {
            var result = new Result();
            var err_msg = string.Empty;

            var to_check_land_meta_id = (META_ID)reqPacket.LandMetaId;

            (result, var auction_check_result) = await LandAuctionManager.It.tryCheckActivitingLandAuctionByMetaId(to_check_land_meta_id, player.getUserGuid());
            if (result.isFail())
            {
                err_msg = $"Failed to tryCheckActivitingLandAuctionByMetaId() !!! : {result.toBasicString()} - {player.toBasicString()}";
                Log.getLogger().error(err_msg);
                return result;
            }
            NullReferenceCheckHelper.throwIfNull(auction_check_result, () => $"auction_check_result is null !!! - {player.toBasicString()}");
            check_result = auction_check_result;

            return result;
        };

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

            return (result, null);
        }
        NullReferenceCheckHelper.throwIfNull(check_result, () => $"check_result is null !!! - {player.toBasicString()}");

        return (result, check_result);
    }

    private static async Task<Result> tryBidLandAuction( C2GS_REQ_LAND_AUCTION_BID reqPacket, LandAuctionCheckResult checkResult
                                                       , Player player )
    {
        var result = new Result();
        var err_msg = string.Empty;

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

            var server_logic = GameServerApp.getServerLogic();
            var db_connector = server_logic.getDynamoDbClient();

            var to_bid_land_meta_id = (META_ID)reqPacket.LandMetaId;
            var to_bid_land_auction_number = reqPacket.AuctionNumber;

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

            (result, var auction_bid_result) = await user_land_auction_action.tryBidLandAuction( reqPacket.BidType
                                                                                               , reqPacket.CurrencyType, reqPacket.BidPrice
                                                                                               , checkResult );
            if (result.isFail())
            {
                err_msg = $"Failed to tryBidLandAuction() !!! : {result.toBasicString()} - {player.toBasicString()}";
                Log.getLogger().error(err_msg);
                return result;
            }
            NullReferenceCheckHelper.throwIfNull(auction_bid_result, () => $"auction_bid_result is null !!! - {player.toBasicString()}");
            NullReferenceCheckHelper.throwIfNull(auction_bid_result.TargetLandAuction, () => $"TargetLandAuction is null !!! - {player.toBasicString()}");
            NullReferenceCheckHelper.throwIfNull(auction_bid_result.ToUpsertItemRequestQueryContexts, () => $"ToUpsertItemRequestQueryContexts is null !!! - {player.toBasicString()}");
            NullReferenceCheckHelper.throwIfNull(auction_bid_result.CurrTopBidder, () => $"CurrTopBidder is null !!! - {player.toBasicString()}");

            var batch = new QueryBatchEx<QueryRunnerWithItemRequest>( player, LogActionType.LandAuctionBid
                                                                    , db_connector
                                                                    , true);
            {
                batch.addQuery(new DBQWithItemRequestQueryContext(auction_bid_result.ToUpsertItemRequestQueryContexts));
                batch.addQuery(new DBQWriteToAttributeAllWithTransactionRunner());
                batch.addQuery(new QueryFinal(), async (_query) =>
                {
                    await user_land_auction_action.completedRefundBidPrice(auction_bid_result, _query);

                    var land_auction_action = auction_bid_result.TargetLandAuction.getEntityAction<LandAuctionAction>();
                    NullReferenceCheckHelper.throwIfNull(land_auction_action, () => $"land_auction_action is null !!! - {player.toBasicString()}");
                    await land_auction_action.completedBidLandAuction(player, reqPacket.BidPrice, checkResult, auction_bid_result, _query);
                    await land_auction_action.sendTopBidderInfo(auction_bid_result.CurrentBidType, auction_bid_result.CurrTopBidder, auction_bid_result.OldTopBidder);

                    return QueryBatchBase.QueryResultType.Success;
                });
            }

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

            err_msg = $"{auction_bid_result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().debug(err_msg);

            send_GS2C_ACK_LAND_AUCTION_BID(player, result, auction_bid_result);

            return result;
        };

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

            return result;
        }

        return result;
    }
}