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


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


namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.CancelBlockReq), typeof(CancelBlockPacketHandler), typeof(GameLoginListener))]
public class CancelBlockPacketHandler : PacketRecvHandler
{
    public override async Task<Result> onProcessPacket(ISession session, IMessage recvMessage)
    {
        var owner = session as Player;
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");
        var recv_msg = recvMessage as ClientToGame;
        NullReferenceCheckHelper.throwIfNull(recv_msg, () => $"recv_msg is null !!!");

        var request = recv_msg.Request.CancelBlockReq;
        

        var block_user_guid = request.Guid;
        var user_block_action = owner.getEntityAction<BlockUserAgentAction>();
        var server_logic = GameServerApp.getServerLogic();

        var user_guid = owner.getUserGuid();

        var result = await owner.runTransactionRunnerSafely(TransactionIdType.PrivateContents, "CancelBlockUser", delegateCancelBlockUser);
        if (result.isFail())
        {
            send_GS2C_ACK_CANCEL_BLOCK_USER(owner, result);
            return result;
        }

        
        await send_GS2C_ACK_CANCEL_BLOCK_USER(owner, result, block_user_guid);
        return result;

        async Task<Result> delegateCancelBlockUser() => await cancelBlockUser(owner, user_guid, block_user_guid);
    }

    private async Task<Result> cancelBlockUser(Player owner, string userGuid, string blockUserGuid)
    {
        var user_block_action = owner.getEntityAction<BlockUserAgentAction>();
        var server_logic = GameServerApp.getServerLogic();

        var result = user_block_action.cancelBlockUser(blockUserGuid);
        if (result.isFail())
        {
            Log.getLogger().error($"cancelBlockUser error userGuid : {userGuid}");
            return result;
        }

        var batch = new QueryBatchEx<QueryRunnerWithDocument>(owner, LogActionType.UserBlockCancel, server_logic.getDynamoDbClient());
        {
            batch.addQuery(new DBQCancelBlockUser(userGuid, blockUserGuid));
            //batch.addQuery(new DBQWriteToAttributeAllWithTransactionRunner());
        }
        
        var log_invoker = new UserBlockBusinessLog(userGuid, blockUserGuid, LogSubCategoryType.None);
        batch.appendBusinessLog(log_invoker);

        result = await QueryHelper.sendQueryAndBusinessLog(batch);
        if (result.isFail()) return result;

        user_block_action.removeBlockUser(blockUserGuid);
        
        return result;
    }

    private static async Task<bool> send_GS2C_ACK_CANCEL_BLOCK_USER(Player owner, Result result, string blockGuid)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

        ack_packet.Response.ErrorCode = result.ErrorCode;
        ack_packet.Response.CancelBlockRes = new();
        ack_packet.Response.CancelBlockRes.Guid = blockGuid;

        (result, var nickname_attrib) = await NicknameDoc.findNicknameFromGuid(blockGuid);
        NullReferenceCheckHelper.throwIfNull(nickname_attrib, () => $"nickname_attrib is null !!!");
        if (result.isFail()) ack_packet.Response.CancelBlockRes.NickName = string.Empty;
        else ack_packet.Response.CancelBlockRes.NickName = nickname_attrib.Nickname;


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

        return true;
    }

    private static bool send_GS2C_ACK_CANCEL_BLOCK_USER(Player owner, Result result)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

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

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

        return true;
    }
}