public ParentPresenter(Views.IParentView view, Model.SchoolDBEntities data, Model.IUser user, ILoginPresenter loginPresenter)
{
this.view = view;
view.Presenter = this;
this.data = data;
this.user = user;
this.loginPresenter = loginPresenter;
// View initialization
var parent = user as Model.Parent;
view.ParentNameLabelText = parent.parent_firstN + ' ' + parent.parent_lastN;
// Get all studets associated with this parent and transform them into a structure that is databinded to a combobox
var students = parent.Students.Select(x => Tuple.Create(x.student_id, x.student_firstN + ' ' + x.student_lastN));
view.FillInCorrespondingStudents(students.ToList());
view.ComboBoxStudentSelectedIndex = -1;
}
public void OnLoginButtonClick()
{
// Check if the user input is valid, display info if not.
if (view.Username == string.Empty)
{
view.Message("Моля, въведете вашето потребителско име.", "Внимание", Views.MessageIcon.Warning);
return;
}
if (view.Pass == string.Empty)
{
view.Message("Моля, въведете вашата парола.", "Внимание", Views.MessageIcon.Warning);
return;
}
// Check if the username is in the database
Model.IUser currentUser = null;
//string typeOfUser = view.TypeOfUser;
try
{
currentUser = (data.Teachers.Where(x => x.username == view.Username).SingleOrDefault() as Model.IUser) ??
(data.Parents.Where(x => x.username == view.Username).SingleOrDefault() as Model.IUser) ??
data.Admins.Where(x => x.admin_username == view.Username).SingleOrDefault();
}
catch (System.Data.Entity.Core.EntityException)
{
view.Message("Неуспешна връзка с базата данни. Моля, опитайте отново по-късно. Съжаляваме за причиненото неудобство.", "Грешка", Views.MessageIcon.Error);
return;
}
// Display error message if there is no such user.
if (currentUser == null)
{
view.Message("Грешно потребителско име и/или парола. Моля, опитайте отново. Ако продължавате да изпитвате затруднения, свържете се с училищния администратор.", "Грешка", Views.MessageIcon.Error);
return;
}
// Instantiate a new password hashing/checking class and use it to check if the user password is correct.
Utilities.IPasswordHash passHashChecker = new Utilities.PasswordHash();
var isPasswordCorrect = passHashChecker.Verify(view.Pass, currentUser.Password);
// Disaply error if password is not correct
if (!isPasswordCorrect)
{
view.Message("Грешно потребителско име и/или парола. Моля, опитайте отново.", "Грешка", Views.MessageIcon.Error);
return;
}
// If everything is fine, hide this view and start the appropriate one. (Not implemented)
view.Hide();
//view.Close();
switch (currentUser.UserType)
{
case Model.UserType.Teacher:
Views.ITeacherView teacherView = view.CreateTeacherView();
ITeacherPresenter teacherPresenter = PresenterFactory.GetTeacherPresenter(teacherView, data, currentUser, this);
teacherPresenter.Start();
break;
case Model.UserType.Parent:
Views.IParentView parentView = view.CreateParentView();
IParentPresenter parentPresenter = PresenterFactory.GetParentPresenter(parentView, data, currentUser, this);
parentPresenter.Start();
break;
case Model.UserType.Admin:
Views.IAdminView adminView = view.CreateAdminView();
IAdminPresenter adminPresenter = PresenterFactory.GetAdminPresenter(adminView, data, currentUser, this);
adminPresenter.Start();
break;
}
}
public static IParentPresenter GetParentPresenter(Views.IParentView view, Model.SchoolDBEntities data, Model.IUser currentUser, ILoginPresenter loginPresenter) => new ParentPresenter(view, data, currentUser, loginPresenter);
