SUBD_Aleikin/Restaurant/RestaurantBusinessLogic/BusinessLogics/ClientLogic.cs

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C#
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using RestaurantContracts.BindingModels;
using RestaurantContracts.BusinessLogicsContracts;
using RestaurantContracts.SearchModels;
using RestaurantContracts.StoragesContracts;
using RestaurantContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace RestaurantBusinessLogic.BusinessLogics
{
public class ClientLogic : IClientLogic
{
private readonly IClientStorage _clientStorage;
public ClientLogic(IClientStorage clientStorage)
{
_clientStorage = clientStorage;
}
public bool Create(ClientBindingModel model)
{
CheckModel(model);
if (_clientStorage.Insert(model) == null)
{
return false;
}
return true;
}
public bool Delete(ClientBindingModel model)
{
CheckModel(model, false);
if (_clientStorage.Delete(model) == null)
{
return false;
}
return true;
}
public ClientViewModel? ReadElement(ClientSearchModel model)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
var element = _clientStorage.GetElement(model);
if (element == null)
{
return null;
}
return element;
}
public List<ClientViewModel>? ReadList(ClientSearchModel? model)
{
var list = model == null ? _clientStorage.GetFullList() : _clientStorage.GetFilteredList(model);
if (list == null)
{
return null;
}
return list;
}
public bool Update(ClientBindingModel model)
{
CheckModel(model);
if (_clientStorage.Update(model) == null)
{
return false;
}
return true;
}
private void CheckModel(ClientBindingModel model, bool withParams = true)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
if (!withParams)
{
return;
}
if (string.IsNullOrEmpty(model.FirstName))
{
throw new ArgumentNullException("Нет имени клиента", nameof(model.FirstName));
}
if (string.IsNullOrEmpty(model.LastName))
{
throw new ArgumentNullException("Нет фамилии клиента", nameof(model.LastName));
}
if (string.IsNullOrEmpty(model.Number))
{
throw new ArgumentNullException("Нет номера клиента", nameof(model.Number));
}
var element = _clientStorage.GetElement(new ClientSearchModel
{
FirstName = model.FirstName,
LastName = model.LastName,
Number = model.Number,
});
if (element != null && element.Id != model.Id)
{
throw new InvalidOperationException("Клиент с такими параметрами уже есть");
}
}
}
}