public async Task <UserCourseDescription[]> GetUserCoursesAsync(string userId)
{
var studentCoursesIds = await _courseMatesRepository
.FindAll(cm => cm.StudentId == userId && cm.IsAccepted == true)
.Select(cm => cm.CourseId)
.ToArrayAsync()
.ConfigureAwait(false);
var getStudentCoursesTasks = studentCoursesIds
.Select(id => _coursesRepository.GetAsync(id)) // TODO: optimize
.ToArray();
var studentCourses = await Task.WhenAll(getStudentCoursesTasks).ConfigureAwait(false);
var getMentorCoursesTask = _coursesRepository
.FindAll(c => c.MentorId == userId)
.ToArrayAsync();
var mentorCourses = await getMentorCoursesTask.ConfigureAwait(false);
return(studentCourses
.Union(mentorCourses)
.Select(c =>
{
var userCourseDescription = _mapper.Map <UserCourseDescription>(c);
userCourseDescription.UserIsMentor = c.MentorId == userId;
return userCourseDescription;
})
.OrderBy(c => c.UserIsMentor).ThenBy(c => c.Name)
.ToArray());
}
public IActionResult Index()
{
var courses = _coursesRepository.FindAll().ToList();
var model = _mapper.Map <List <CourseVM> >(courses);
return(View(model));
}