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


using ServerCore;
using ServerBase;
using ServerCommon;


namespace GameServer.PacketHandler;

[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.DeleteFriendReq), typeof(DeleteFriendPacketHandler), typeof(GameLoginListener))]
public class DeleteFriendPacketHandler : 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 !!! - {owner.toBasicString()}");

        var request = recv_msg.Request.DeleteFriendReq;
        var delete_guid = request.Guid;
        var my_guid = owner.getUserGuid();

        var server_logic = GameServerApp.getServerLogic();

        var result = await owner.runTransactionRunnerSafely(TransactionIdType.PrivateContents, "DeleteFriend", delegateDeleteFriend);
        if (result.isFail())
        {
            send_GS2C_ACK_DELETE_FRIEND(owner, result);
            return result;
        }
        send_GS2C_ACK_DELETE_FRIEND(owner, result);

        //상대방에게도 삭제 됐다고 Noti 보낸다
        await send_GS2CS_NTF_DELETE_FRIEND(owner, my_guid, delete_guid);

        await QuestManager.It.QuestCheck(owner, new QuestFriend(EQuestEventTargetType.FRIEND, EQuestEventNameType.DELETED));

        return result;

        async Task<Result> delegateDeleteFriend() => await deleteFriend(owner, my_guid, delete_guid);
    }

    public static async Task send_GS2CS_NTF_DELETE_FRIEND(Player owner, string myGuid, string deleteGuid)
    {
        ServerMessage deleteNoti = new ServerMessage();
        deleteNoti.FriendDeleteNoti = new();
        deleteNoti.FriendDeleteNoti.SenderId = myGuid;
        deleteNoti.FriendDeleteNoti.SenderGuid = myGuid;
        deleteNoti.FriendDeleteNoti.SenderNickName = owner.getUserNickname();
        deleteNoti.FriendDeleteNoti.ReceiverId = "";
        deleteNoti.FriendDeleteNoti.ReceiverGuid = deleteGuid;

        var server_logic = GameServerApp.getServerLogic();
        var rabbit_mq = server_logic.getRabbitMqConnector() as RabbitMqConnector;
        NullReferenceCheckHelper.throwIfNull(rabbit_mq, () => $"rabbit_mq is null !!! - {owner.toBasicString()}");

        var login_cache_request = new LoginCacheOtherUserRequest(owner, server_logic.getRedisConnector(), deleteGuid);
        var result = await login_cache_request.fetchLogin();
        if (result.isSuccess())
        {
            var login_cache = login_cache_request.getLoginCache();
            NullReferenceCheckHelper.throwIfNull(login_cache, () => $"login_cache is null !!! - {owner.toBasicString()}");

            rabbit_mq.SendMessage(login_cache.CurrentServer, deleteNoti);
        }
    }

    private async Task<Result> deleteFriend(Player owner, string myGuid, string deleteGuid)
    {
        IFriendInterlockAction interlock_action = new DeleteFriendInterlockAction(owner, myGuid, deleteGuid);
        var result = await interlock_action.doInterlockAction();

        return result;
    }

    private static bool send_GS2C_ACK_DELETE_FRIEND(Player owner, Result result)
    {
        var ack_packet = new ClientToGame();
        ack_packet.Response = new ClientToGameRes();

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

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

        return true;
    }
}