async private void teacherSignInClick(object sender, EventArgs e)
{
/// <summary>
/// Subroutine that signs a teacher into their account. It sends GET /teacher/<username>?username=True
/// </summary>
string username = usernameTextBox.Text;
string password = passwordTextBox.Text;
flushTextBoxes();
if (checkBox1.Checked == true)
{
MessageBox.Show("Teachers cannot use the first time sign-in feature, and should enter their password.");
return;
}
if (username == "" || password == "")
{
MessageBox.Show("Username or password cannot be left blank!");
return; // Do not execute more of the subroutine
}
string credentials = WebRequestHandler.ConvertToBase64(username + ":" + password);
APIHandler.SetAuthorizationHeader(credentials);
if (await APIHandler.IsUserValid(UserType.Teacher, username, password))
{
Teacher teacher = await APIHandler.GetTeacher(username : username);
closedByProgram = true; // Set boolean to prevent Application.Exit() call
this.Close(); // Close current form
FormController.teacherMain = new TeacherMainForm(teacher); // Open the new form
}
else
{
MessageBox.Show("Your account doesn't exist.");
}
}
async private void studentSignInClick(object sender, EventArgs e)
{
/// <summary>
/// Subroutine that is executed when a student wants to sign into the program.
/// It sends a GET request to the API to try and obtain student details.
/// </summary>
string username = usernameTextBox.Text;
string password = passwordTextBox.Text;
flushTextBoxes();
if (checkBox1.Checked)
{
if (username == "")
{
MessageBox.Show("Username cannot be left blank!");
return;
}
StudentGetPassword passwordForm = new StudentGetPassword();
var dialog = passwordForm.ShowDialog();
if (dialog == DialogResult.OK)
{
password = passwordForm.passwordResult;
}
else
{
MessageBox.Show("An error has occurred, please try again.");
return;
}
// Send request to API to change password of `username` to `password`
try {
await APIHandler.ResetPassword(username, password);
string newCredentials = WebRequestHandler.ConvertToBase64(username + ":" + password);
WebRequestHandler.SetAuthorizationHeader(newCredentials);
Student student = await APIHandler.GetStudent(username : username); // Get the student with username `username` from the API
closedByProgram = true; // Set boolean to prevent Application.Exit() call
this.Close(); // Close current form
FormController.studentMain = new StudentMainForm(student); // Open the new form
} catch (HttpStatusUnauthorized) {
MessageBox.Show("Your account already has a password - please ask a teacher to reset your password.");
return;
}
}
else
{
if (username == "" || password == "")
{
MessageBox.Show("Username or password cannot be left blank!"); //TODO: Does this need a messagebox? Nicer way of showing error?
return; // Do not execute more of the subroutine
}
string credentials = WebRequestHandler.ConvertToBase64(username + ":" + password);
APIHandler.SetAuthorizationHeader(credentials);
if (await APIHandler.IsUserValid(UserType.Student, username, password))
{
Student student = await APIHandler.GetStudent(username : username); // Get the student with username `username` from the API
closedByProgram = true; // Set boolean to prevent Application.Exit() call
this.Close(); // Close current form
FormController.studentMain = new StudentMainForm(student); // Open the new form
}
else
{
MessageBox.Show("Your account doesn't exist.");
}
}
}