PIbd-22_Shabunov_O.A._SushiBar/SushiBarBusinessLogic/CustomerLogic.cs

using SushiBarContracts.BindingModels;
using SushiBarContracts.SearchModels;
using SushiBarContracts.ViewModels;
using SushiBarDatabaseImplement.Storages;

namespace SushiBarBusinessLogic
{
    public class CustomerLogic
    {
        private readonly CustomerStorage _customerStorage;

        public CustomerLogic(CustomerStorage CustomerStorage)
        {
            _customerStorage = CustomerStorage;
        }

        public List<CustomerViewModel>? ReadList(CustomerSearchModel? Model)
        {
            var List = Model is null ? _customerStorage.GetFullList() : _customerStorage.GetFilteredList(Model);

            if (List is null)
            {
                return null;
            }
            return List;
        }

        public CustomerViewModel? ReadElement(CustomerSearchModel? Model)
        {
            if (Model is null)
                throw new ArgumentNullException(nameof(Model));

            var Element = _customerStorage.GetElement(Model);

            if (Element is null)
            {
                return null;
            }
            return Element;
        }

        public bool Create(CustomerBindingModel Model)
        {
            if (_customerStorage.Insert(Model) is null)
            {
                return false;
            }
            return true;
        }

        public bool Update(CustomerBindingModel Model)
        {
            if (_customerStorage.Update(Model) is null)
            {
                return false;
            }
            return true;
        }

        public bool Delete(CustomerBindingModel Model)
        {
            if (_customerStorage.Delete(Model) is null)
            {
                return false;
            }
            return true;
        }
    }
}