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


using ServerCore;
using ServerBase;
using ServerCommon;


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


namespace GameServer.PacketHandler;


[PacketHandler(typeof(ClientToGameReq), typeof(ClientToGameReq.Types.C2GS_REQ_CALIUM_EXCHANGER_INFO), typeof(GetCaliumExchangerInfoPacketHandler), typeof(GameLoginListener))]
public class GetCaliumExchangerInfoPacketHandler : PacketRecvHandler
{
    private async Task send_S2C_ACK_CALIUM_EXCHANGER_INFO(Player owner, Result result, double inflationRate, DateTime nextEpochTime)
    {
        var ack_packet = new ClientToGame
        {
            Response = new ClientToGameRes
            {
                ErrorCode = result.ErrorCode,
                AckCaliumExchangerInfo = new ()
            }
        };

        if (result.isSuccess())
        {
            ack_packet.Response.AckCaliumExchangerInfo.InflationRate = inflationRate;
            ack_packet.Response.AckCaliumExchangerInfo.FixedExchangeRate = CaliumStorageHelper.FixedExchangeRate;

            var time = new DateTime(nextEpochTime.Year, nextEpochTime.Month, nextEpochTime.Day, nextEpochTime.Hour, nextEpochTime.Minute, nextEpochTime.Second, DateTimeKind.Utc);
            ack_packet.Response.AckCaliumExchangerInfo.NextEpochTime = time.ToTimestamp();
        }
        
        GameServerApp.getServerLogic().onSendPacket(owner, ack_packet);

        await Task.CompletedTask;
    }

    public override async Task<Result> onProcessPacket(ISession entityWithSession, IMessage recvMessage)
    {
        var result = new Result();
        string err_msg;
        var player = entityWithSession as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => $"player is null !!!");

        // 1. 기본 정보 체크
        var request = (recvMessage as ClientToGame)?.Request.ReqCaliumExchangerInfo;
        if (null == request)
        {
            err_msg = $"Failed to get request type !!! : {nameof(ClientToGame.Request.ReqCaliumExchangerInfo)}";
            result.setFail(ServerErrorCode.InvalidArgument, err_msg);
            Log.getLogger().error(result.toBasicString());

            await send_S2C_ACK_CALIUM_EXCHANGER_INFO(player, result, 0, DateTimeHelper.MinTime);
            return result;
        }
        
        // 2. 정보 조회
        var calium_storage_entity = GameServerApp.getServerLogic().findGlobalEntity<CaliumStorageEntity>();
        NullReferenceCheckHelper.throwIfNull(calium_storage_entity, () => $"calium_storage_entity is null !!! - {player.toBasicString()}");

        var calium_storage_action = calium_storage_entity.getEntityAction<CaliumStorageAction>();
        NullReferenceCheckHelper.throwIfNull(calium_storage_action, () => $"calium_storage_action is null !!! - {calium_storage_entity.toBasicString()} / {player.toBasicString()}");

        var info = await calium_storage_action.getCaliumStorageInfo();
        await send_S2C_ACK_CALIUM_EXCHANGER_INFO(player, result, info.DailyInflationRate, info.DailyPivotDate.AddDays(1));

        return result;
    }
}