PIbd-22-Ismailov_SUBD/BlogDataModels/BusinessLogic/RoleLogic.cs

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C#
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using ForumContracts.BindingModels;
using ForumContracts.BusinessLogicContracts;
using ForumContracts.SearchModels;
using ForumContracts.StoragesContracts;
using ForumContracts.ViewModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ForumBusinessLogic
{
public class RoleLogic : IRoleLogic
{
private readonly IRoleStorage _roleStorage;
public RoleLogic(IRoleStorage roleStorage)
{
_roleStorage = roleStorage;
}
public bool Create(RoleBindingModel model)
{
CheckModel(model);
if (_roleStorage.Insert(model) == null)
{
return false;
}
return true;
}
public bool Delete(RoleBindingModel model)
{
CheckModel(model, false);
if (_roleStorage.Delete(model) == null)
{
return false;
}
return true;
}
public RoleViewModel? ReadElement(RoleSearchModel model)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
var element = _roleStorage.GetElement(model);
if (element == null)
{
return null;
}
return element;
}
public List<RoleViewModel>? ReadList(RoleSearchModel? model)
{
var list = model == null ? _roleStorage.GetFullList() : _roleStorage.GetFilteredList(model);
if (list == null)
{
return null;
}
return list;
}
public void RoleInsertList(int num)
{
_roleStorage.RoleInsertList(num);
}
public bool Update(RoleBindingModel model)
{
CheckModel(model);
if (_roleStorage.Update(model) == null)
{
return false;
}
return true;
}
private void CheckModel(RoleBindingModel model, bool withParams = true)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
if (!withParams)
{
return;
}
if (string.IsNullOrEmpty(model.Name))
{
throw new ArgumentNullException("Нет названия роли", nameof(model.Name));
}
var element = _roleStorage.GetElement(new RoleSearchModel
{
Name = model.Name
}
);
if (element != null && element.Id != model.Id)
{
throw new InvalidOperationException("Роль с таким названием уже есть");
}
}
}
}