private void SetLessonButtonAsEnabledOrDisabled(Button lessonButton)
{
int.TryParse(lessonButton.Content.ToString().Replace(GlobalVariables.lessonNumberPartialText, ""), out int buttonLessonNumber);
var lessonsDone = _lessonService.GetDoneLessonsNumbersByUser(_user);
if (buttonLessonNumber != 0 &&
lessonsDone != null &&
lessonsDone.Count > 0 &&
(lessonsDone.Contains(buttonLessonNumber) ||
lessonsDone.Max() + 1 == buttonLessonNumber))
{
lessonButton.IsEnabled = true;
}
else if (buttonLessonNumber != 0 &&
buttonLessonNumber == _lessonService.GetFirstLessonNumber(_user))
{
lessonButton.IsEnabled = true;
}
else
{
lessonButton.IsEnabled = false;
}
}
