102 lines
2.8 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using UchetLabContracts.BindingModels;
using UchetLabContracts.BusinessLogicsContracts;
using UchetLabContracts.SearchModels;
using UchetLabContracts.StorageContracts;
using UchetLabContracts.ViewModels;
namespace UchetLabBusinessLogic.BusinessLogic
{
public class LabLogic : ILabLogic
{
ILabStorage _labStorage;
public LabLogic(ILabStorage labStorage)
{
_labStorage = labStorage;
}
public bool Create(LabBindingModel model)
{
CheckModel(model);
if (_labStorage.Insert(model) == null)
{
return false;
}
return true;
}
public bool Delete(LabBindingModel model)
{
CheckModel(model, false);
if (_labStorage.Delete(model) == null)
{
return false;
}
return true;
}
public LabViewModel? ReadElement(LabSearchModel model)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
var element = _labStorage.GetElement(model);
if (element == null)
{
return null;
}
return element;
}
public List<LabViewModel>? ReadList(LabSearchModel? model)
{
var list = model == null ? _labStorage.GetFullList() : _labStorage.GetFilteredList(model);
if (list == null)
{
return null;
}
return list;
}
public bool Update(LabBindingModel model)
{
CheckModel(model);
if (_labStorage.Update(model) == null)
{
return false;
}
return true;
}
private void CheckModel(LabBindingModel model, bool withParams = true)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
if (!withParams)
{
return;
}
if (string.IsNullOrEmpty(model.LabTask))
{
throw new ArgumentNullException("Нет задания лабораторной", nameof(model.LabTask));
}
if (string.IsNullOrEmpty(model.Checker))
{
throw new ArgumentNullException("Нет проверяющего лабораторной", nameof(model.Checker));
}
if (string.IsNullOrEmpty(model.TaskImage))
{
throw new ArgumentNullException("Нет картинки для лабораторной", nameof(model.TaskImage));
}
}
}
}