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.");
}
}