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.BlockUserReq), typeof(BlockUserPacketHandler), typeof(GameLoginListener))]
public class BlockUserPacketHandler : 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.BlockUserReq;
        
        var block_nickname = request.TargetNickName;

        var my_guid = owner.getUserGuid();

        (var result, var nickname_attrib) = await NicknameHelper.findNickname(block_nickname);
        if (result.isFail())
        {
            result.ErrorCode = ServerErrorCode.NotExistCharacter;
            send_GS2C_ACK_BLOCK_USER(owner, result);
            return result;
        }
        NullReferenceCheckHelper.throwIfNull(nickname_attrib, () => $"server_logic is null !!!");

        var block_user_guid = nickname_attrib.UserGuid;

        var user_block_agent_action = owner.getEntityAction<BlockUserAgentAction>();
        NullReferenceCheckHelper.throwIfNull(user_block_agent_action, () => $"user_block_agent_action is null !!!");


        var server_logic = GameServerApp.getServerLogic();
        result = user_block_agent_action.blockUserConditionCheck(block_user_guid);
        if (result.isFail())
        {
            send_GS2C_ACK_BLOCK_USER(owner, result);
            return result;
        }
        
        var friend_agent_action = owner.getEntityAction<FriendAgentAction>();
        
        //친구인경우 나중을 위해 우선 check만 해놓는다. 
        var is_friend  = friend_agent_action.isFriend(block_user_guid);

        var friend_request_cache = new FriendReqCacheRequest(owner, my_guid, block_user_guid, server_logic.getRedisConnector());
        var send_friend_action = owner.getEntityAction<SendFriendRequestAction>();

        //요청 보낸 정보가 있는경우 
        var sended_reqs = await friend_request_cache.getSendedFriendRequests();
        (var is_sended, var _) = send_friend_action.isSendedRequest(sended_reqs, block_user_guid);
        //이미 요청 받았다
        var received_reqs = await friend_request_cache.getReceivedFriendRequests();
        (var is_received, var _) = send_friend_action.isReceivedRequest(received_reqs, block_user_guid);


        result = await owner.runTransactionRunnerSafely(TransactionIdType.PrivateContents, "BlockUser", delegateBlockUser);
        if (result.isFail())
        {
            send_GS2C_ACK_BLOCK_USER(owner, result);
            return result;
        }


        send_GS2C_ACK_BLOCK_USER(owner, result, block_user_guid, block_nickname);

        if (is_friend)
        {
            await DeleteFriendPacketHandler.send_GS2CS_NTF_DELETE_FRIEND(owner, my_guid, block_user_guid);
            await QuestManager.It.QuestCheck(owner, new QuestFriend(EQuestEventTargetType.FRIEND, EQuestEventNameType.DELETED));
        }                

        return result;

        async Task<Result> delegateBlockUser() => await blockUser(owner, my_guid, block_user_guid, is_friend, is_sended, is_received, friend_request_cache);
    }

    private async Task<Result> blockUser(Player owner, string userGuid, string blockUserGuid, bool isFriend, bool isSended, bool isReceived, FriendReqCacheRequest cache)
    {
        var user_block_agent_action = owner.getEntityAction<BlockUserAgentAction>();
        var server_logic = GameServerApp.getServerLogic();
        var result = user_block_agent_action.blockUser(userGuid, blockUserGuid, isFriend);


        var batch = new QueryBatchEx<QueryRunnerWithDocument>(owner, LogActionType.UserBlock, server_logic.getDynamoDbClient());
        {
            batch.addQuery(new DBQBlockUser(userGuid, blockUserGuid));
            if(isFriend) batch.addQuery(new DBQDeleteFriend(userGuid, blockUserGuid));
        }
        var log_invoker = new UserBlockBusinessLog(userGuid, blockUserGuid, LogSubCategoryType.None);
        batch.appendBusinessLog(log_invoker);


        result = await QueryHelper.sendQueryAndBusinessLog(batch);

        if (isSended)
        {
            await cache.deleteCache(userGuid, blockUserGuid);
        }
        if (isReceived)
        {
            await cache.deleteCache(blockUserGuid, userGuid);
        }

        return result;
    }

    private static bool send_GS2C_ACK_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.BlockUserRes = new();


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

        return true;
    }


    private static bool send_GS2C_ACK_BLOCK_USER(Player owner, Result result, string blockGuid, string nickname)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

        ack_packet.Response.ErrorCode = result.ErrorCode;
        ack_packet.Response.BlockUserRes = new();
        ack_packet.Response.BlockUserRes.Guid = blockGuid;
        ack_packet.Response.BlockUserRes.NickName = nickname;

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

        return true;
    }


}