public class ViewModelMapper : Profile {

        public ViewModelMapper() {

            CreateMap<DataViewModel, DataModel>().ReverseMap();

            CreateMap<Ship, ShipViewModel>().ReverseMap();

            CreateMap<Weapon, WeaponViewModel>().ReverseMap();

            CreateMap<Quest, QuestViewModel>().ReverseMap();

            CreateMap<FleetViewModel, Fleet>();
            CreateMap<Fleet, FleetViewModel>()
                .ForMember(fvm => fvm.TotalHealth, c => c.MapFrom(
                    f => f.Ships.Sum(s => s.Health)
                ))
                .ForMember(fvm => fvm.AverageLevel, c => c.MapFrom(
                    f => (int)f.Ships.Average(s => s.Level)
                ));
        }

    }