StudentEnrollmentNew/StudentEnrollment/StudentEnrollmentBusinessLogic/StudentLogic.cs

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C#
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using Microsoft.Extensions.Logging;
using StudentEnrollmentContracts.BindingModels;
using StudentEnrollmentContracts.BusinessLogicContracts;
using StudentEnrollmentContracts.SearchModels;
using StudentEnrollmentContracts.StorageContracts;
using StudentEnrollmentContracts.ViewModels;
namespace StudentEnrollmentBusinessLogic
{
public class StudentLogic : IStudentLogic
{
private readonly ILogger _logger;
private readonly IStudentStorage _studentStorage;
public StudentLogic(ILogger<StudentLogic> logger, IStudentStorage studentStorage)
{
_logger = logger;
_studentStorage = studentStorage;
}
public List<StudentViewModel>? ReadList(StudentSearchModel? model)
{
_logger.LogInformation("ReadList. TIN: {TIN}. Id:{Id}", model?.tin, model?.student_id);
var list = model == null ? _studentStorage.GetFullList() : _studentStorage.GetFilteredList(model);
if (list == null)
{
_logger.LogWarning("ReadList return null list");
return null;
}
_logger.LogInformation("ReadList. Count:{Count}", list.Count);
return list;
}
public StudentViewModel? ReadElement(StudentSearchModel model)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
_logger.LogInformation("ReadList. TIN: {TIN}. Id:{Id}", model?.tin, model?.student_id);
var element = _studentStorage.GetElement(model);
if (element == null)
{
_logger.LogWarning("ReadElement element not found");
return null;
}
_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
return element;
}
public bool Create(StudentBindingModel model)
{
CheckModel(model);
if (_studentStorage.Insert(model) == null)
{
_logger.LogWarning("Insert operation failed");
return false;
}
return true;
}
public bool Update(StudentBindingModel model)
{
CheckModel(model);
if (_studentStorage.Update(model) == null)
{
_logger.LogWarning("Update operation failed");
return false;
}
return true;
}
public bool Delete(StudentBindingModel model)
{
CheckModel(model, false);
_logger.LogInformation("Delete. Id:{Id}", model.Id);
if (_studentStorage.Delete(model) == null)
{
_logger.LogWarning("Delete operation failed");
return false;
}
return true;
}
private void CheckModel(StudentBindingModel model, bool withParams = true)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
if (!withParams)
{
return;
}
if (string.IsNullOrEmpty(model.LastName))
{
throw new ArgumentNullException("Нет фамилии студента!", nameof(model.LastName));
}
if (string.IsNullOrEmpty(model.FirstName))
{
throw new ArgumentNullException("Нет имени студента!", nameof(model.FirstName));
}
if (model.TIN == 0)
{
throw new ArgumentNullException("Нет ИНН студента!", nameof(model.TIN));
}
if (string.IsNullOrEmpty(model.Email))
{
throw new ArgumentNullException("Нет почты студента!", nameof(model.Email));
}
if (model.StudentCourse.Count == 0)
{
throw new ArgumentNullException("У студента должны быть баллы за экзамены!", nameof(model.StudentCourse));
}
_logger.LogInformation("Student. LastName: {LastName}, FirstName: {FirstName}, MiddleName: {MiddleName}, TIN: {TIN}, Email: {Email}, Id: {Id}", model.LastName, model.FirstName, model.MiddleName, model.TIN, model.Email, model.Id);
var element = _studentStorage.GetElement(new StudentSearchModel
{
tin = model.TIN
});
if (element != null && element.Id != model.Id)
{
throw new InvalidOperationException("Студент с таким ИНН уже есть");
}
}
}
}