public ActionResult EditLecturerProfile(UserInformation user, LecturerEditProfileModel model)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Error");
}
else
{
try
{
Lecturer lecturer = _repository.Lecturers.Where(x => x.ID == user.UserId).First();
lecturer.Information = model.Interests;
lecturer.Interests = model.Interests;
lecturer.Name = model.Name;
lecturer.Surname = model.Surname;
lecturer.IsAcademic = model.IsAcademic;
_repository.SaveLecturer(lecturer);
return View("ChangesSaved");
}
catch
{
return View("Error");
}
}
}
else
{
return View("UnauthorizedAccess");
}
}
public ActionResult EditTopic(UserInformation user, Guid topicId)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (!CheckIfLecturerHasAccessToTheTopic(user, topicId))
return View("AccessDenied");
else
{
TopicForEditing t = new TopicForEditing();
t.ID = topicId;
t.CourseId = _repository.CourseTopics.Where(x => x.ID == topicId).First().CourseId;
ViewBag.CourseName = _repository.Courses.Where(x => x.ID == t.CourseId).First<Course>().Name;
ViewBag.TopicName = _repository.CourseTopics.Where(x => x.ID == topicId).First().Name;
t.Lectures = _repository.Lectures.Where(x => x.TopicId == topicId).ToList<Lecture>().OrderBy(x => x.OrderNumber).ToList<Lecture>();
t.Tests = _repository.Tests.Where(x => x.TopicId == topicId).ToList<Test>();
return View(t);
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public ActionResult CreateLecture(UserInformation user, Guid topicId)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (!CheckIfLecturerHasAccessToTheTopic(user, topicId))
return View("AccessDenied");
else
{
return View("EditLecture", new LectureForEditing() { TopicId = topicId, OrderNumber = (_repository.Lectures.Where(x => x.TopicId == topicId).Count() + 1) });
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
UserInformation info = new UserInformation();
info.UserName = controllerContext.HttpContext.Session[userNameSessionKey] as string;
info.UserId = controllerContext.HttpContext.Session[userIdSessionKey] as Guid?;
info.IsStudent = (controllerContext.HttpContext.Session[userIsStudentKey] as bool?) ?? false;
if (info.UserId == null || info.UserName == null)
return null;
return info;
}
public ActionResult EditProfile(UserInformation user)
{
if (user != null)
{
if (user.IsStudent)
{
try
{
StudentEditProfileModel model = (from x in _repository.Students
where x.ID == user.UserId
select new StudentEditProfileModel
{
Id = x.ID,
Information = x.Information,
Interests = x.Interests,
Name = x.Name,
Surname = x.Surname
}).First();
return View("EditStudentProfile", model);
}
catch
{
return View("Error");
}
}
else
{
try
{
LecturerEditProfileModel model = (from x in _repository.Lecturers
where x.ID == user.UserId
select new LecturerEditProfileModel
{
Id = x.ID,
Information = x.Information,
Interests = x.Interests,
Name = x.Name,
Surname = x.Surname,
IsAcademic = x.IsAcademic
}).First();
return View("EditLecturerProfile", model);
}
catch
{
return View("Error");
}
}
}
else
{
return View("UnauthorizedAccess");
}
}
public ActionResult Index(UserInformation user)
{
if (user != null)
{
if (user.IsStudent)
{
List<StudentCourseRequestModel> requests = (from x in _repository.CourseRequests
where x.StudentId == user.UserId
select new StudentCourseRequestModel()
{
CourseId = x.CourseId,
Id = x.ID,
Date = x.Date,
CourseName = _repository.Courses.Where(c => c.ID == x.CourseId).Select(s => s.Name).FirstOrDefault(),
WasApproved = !x.IsDeclined,
}).OrderByDescending(x => x.Date).ToList<StudentCourseRequestModel>();
return View("StudentCourseRequests", requests);
}
else
{
List<Guid> courseIds = _repository.Courses.Where(x => x.LecturerId == user.UserId).Select(m => m.ID).ToList<Guid>();
List<LecturerCourseRequestModel> requests = (from x in _repository.CourseRequests
where courseIds.Contains(x.CourseId) &&
x.IsDeclined == true
select new LecturerCourseRequestModel()
{
CourseId = x.CourseId,
Id = x.ID,
StudentId = x.StudentId,
Message = x.Message,
Date = x.Date,
CourseName = _repository.Courses.Where(c => c.ID == x.CourseId).Select(s => s.Name).FirstOrDefault(),
StudentName = _repository.Students.Where(s => s.ID == x.StudentId).Select(n => n.Name + " " + n.Surname).FirstOrDefault()
}).OrderByDescending(d => d.Date).ToList<LecturerCourseRequestModel>();
return View("LecturerCourseRequests", requests);
}
}
else
{
return View("UnauthorizedAccess");
}
}
public JsonResult DeleteRequest(UserInformation user, Guid id)
{
if (user != null)
{
Guid courseId = _repository.CourseRequests.Where(x => x.ID == id).Select(m => m.CourseId).FirstOrDefault();
if (courseId != Guid.Empty && CheckIfLecturerCanAccessTheCourse(user.UserId.Value, courseId))
{
_repository.DeleteCourseRequest(id);
return Json(true);
}
else
{
return Json(false);
}
}
else
{
return Json(false);
}
}
public JsonResult ApproveRequest(UserInformation user, Guid courseId, Guid studentId)
{
if (user != null)
{
if (CheckIfLecturerCanAccessTheCourse(user.UserId.Value, courseId))
{
CourseRequest request = _repository.CourseRequests.Where(x => x.StudentId == studentId && x.CourseId == courseId).First();
request.IsDeclined = false;
_repository.SaveCourseRequest(request);
_repository.SaveStudentCourse(new StudentCourse() { StudentId = studentId, CourseId = courseId, StartDate = DateTime.Now });
return Json(true);
}
else
{
return Json(false);
}
}
else
{
return Json(false);
}
}
public ActionResult DeleteTopic(UserInformation user, Guid topicId)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (!CheckIfLecturerHasAccessToTheTopic(user, topicId))
return View("AccessDenied");
else
{
//Change order
CourseTopic topic = _repository.CourseTopics.Where(x => x.ID == topicId).First();
List<CourseTopic> topics = _repository.CourseTopics.Where(x => x.CourseId == topic.CourseId && x.OrderNumber > topic.OrderNumber).ToList();
topics.ForEach(x => x.OrderNumber--);
//delete and save
_repository.DeleteTopic(topicId);
foreach (var item in topics)
{
_repository.SaveTopic(item);
}
return RedirectToAction("EditCourse","Course", new { ID = topic.CourseId });
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public ActionResult DeleteLecture(UserInformation user, Guid lectureId)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (!CheckIfLecturerHasAccess(user, lectureId))
return View("AccessDenied");
else
{
//Change order
Lecture lecture = _repository.Lectures.Where(x => x.ID == lectureId).First();
List<Lecture> lectures = _repository.Lectures.Where(x => x.TopicId == lecture.TopicId && x.OrderNumber > lecture.OrderNumber).ToList();
lectures.ForEach(x => x.OrderNumber--);
//delete and save
_repository.DeleteLecture(lectureId);
foreach (var item in lectures)
{
_repository.SaveLecture(item);
}
return RedirectToAction("EditTopic", "Topic", new { topicId = lecture.TopicId });
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public ActionResult CourseDetails(UserInformation user, Guid courseId)
{
Course course = _repository.Courses.Where(x => x.ID == courseId).First();
CourseDetailsModel model = new CourseDetailsModel()
{
CourseId = courseId,
CourseName = course.Name,
Details = new Dictionary<string, List<string>>(),
ComplexityLevel = course.ComplexityLevel,
CreationDate = course.CreationDate,
Description = course.Description,
RequiredSkills = course.RequiredSkills
};
foreach (var topic in _repository.CourseTopics.Where(x => x.CourseId == courseId).OrderBy(x => x.OrderNumber).ToList())
{
KeyValuePair<string, List<string>> item = new KeyValuePair<string, List<string>>(topic.Name, new List<string>());
foreach (var lecture in _repository.Lectures.Where(x => x.TopicId == topic.ID).OrderBy(x => x.OrderNumber))
{
item.Value.Add(lecture.Name);
}
model.Details.Add(item.Key, item.Value);
}
if (user != null)
{
if (user.IsStudent == true)
{
ViewBag.CanSubscribe = _repository.CourseRequests.Where(x => x.CourseId == courseId && x.StudentId == user.UserId).Count() == 0;
ViewBag.HasAlreadySentRequest = !ViewBag.CanSubscribe;
}
else
ViewBag.CanSubscribe = false;
}
else
{
ViewBag.CanSubscribe = false;
}
return View(model);
}
private bool CheckIfLecturerCanAccessTheCourse(UserInformation user, Guid courseId)
{
return user.UserId == _repository.Courses.Where(x => x.ID == courseId).First().LecturerId;
}
public ActionResult SubscribeCourse(UserInformation user, Guid courseId, string message)
{
if (user != null)
{
if (!user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
bool isCoursePublic = _repository.CourseTypes.Where(x => x.ID == _repository.Courses.Where(y => y.ID == courseId).FirstOrDefault().CourseTypeId).Select(k => k.TypeName).First() == "public";
if (isCoursePublic)
{
_repository.SaveCourseRequest(new CourseRequest()
{
IsDeclined = false,
StudentId = user.UserId.Value,
CourseId = courseId,
Message = message,
Date = DateTime.Now
});
_repository.SaveStudentCourse(new StudentCourse()
{
CourseId = courseId,
StudentId = user.UserId.Value
});
}
else
{
_repository.SaveCourseRequest(new CourseRequest()
{
CourseId = courseId,
Date = DateTime.Now,
IsDeclined = true,
Message = message,
StudentId = user.UserId.Value
});
}
return Json(true);
}
catch
{
return View("Error");
}
}
}
return View("UnauthorizedAccess");
}
public ActionResult SubscribedCourseDetails(UserInformation user, Guid courseId)
{
if (user == null)
return View("UnauthorizedAccess");
else
{
if (!user.IsStudent)
return View("LecturerLimitations");
else
{
try
{
//todo: add checking if user don't have access to that course
SubscribedCourseDetailsModel model = new SubscribedCourseDetailsModel()
{
CourseId = courseId,
CourseName = _repository.Courses.Where(x => x.ID == courseId).First().Name,
Details = new Dictionary<string, List<SubscribedCourseLectureModel>>()
};
var watchedLectures = _repository.WatchedLectures.Where(x => x.CourseId == courseId && x.StudentId == user.UserId).Select(m => m.LectureId).ToList();
foreach (var topic in _repository.CourseTopics.Where(x => x.CourseId == courseId).OrderBy(x => x.OrderNumber).ToList())
{
KeyValuePair<string, List<SubscribedCourseLectureModel>> item = new KeyValuePair<string, List<SubscribedCourseLectureModel>>(topic.Name, new List<SubscribedCourseLectureModel>());
foreach (var lecture in _repository.Lectures.Where(x => x.TopicId == topic.ID).OrderBy(x => x.OrderNumber))
{
item.Value.Add(new SubscribedCourseLectureModel() { LectureName = lecture.Name, IsLectureWatched = watchedLectures.Contains(lecture.ID), LectureId = lecture.ID });
}
model.Details.Add(item.Key, item.Value);
}
return View("SubscribedCourse", model);
}
catch (Exception e)
{
return View("Error");
}
}
}
}
public MvcHtmlString ShowLectureContent(UserInformation user, Guid lectureId)
{
if (user != null)
{
if (isCoursePublic(lectureId))
{
if (lectureId == Guid.Empty)
return MvcHtmlString.Create("<h3>There is no more lectures to show</h3>");
else
return GetLectureContent(user, lectureId);
}
else
{
if (CheckIfStudentIsSubscribedForCourse(user.UserId.Value, lectureId))
{
if (lectureId == Guid.Empty)
return MvcHtmlString.Create("<h3>There is no more lectures to show</h3>");
else
return GetLectureContent(user, lectureId);
}
else
{
return MvcHtmlString.Create("<h3>You should be subscribed for this course to see the lecture content.</h3>");
}
}
}
else
{
return MvcHtmlString.Create("<h3>You should be authorized to see the lecture content.</h3>");
}
}
public ActionResult Index(UserInformation user)
{
if (user == null) return View("UnauthorizedAccess");
else if (user.IsStudent)
{
//Get courses for this studentId
//Give them to the view(StudentCourses)
IQueryable<CourseSummaryModel> mycourses = from x in _repository.Courses
where (from k in _repository.StudentCourses where k.StudentId == user.UserId select k.CourseId).Contains(x.ID)
select new CourseSummaryModel()
{
CourseId = x.ID,
CourseName = x.Name,
LecturerName = (from l in _repository.Lecturers where l.ID == x.LecturerId select l.Name + " " + l.Surname).FirstOrDefault(),
Description = x.Description,
};
return View("StudentCourses", mycourses);
}
else
{
//Get courses for this lecturerId
//Give them to the view(LecturerView)
IQueryable<Course> courses = _repository.Courses.Where(x => x.LecturerId == user.UserId);
return View("LecturerCourses", courses);
}
}
public ActionResult DeleteCourse(UserInformation user, Guid courseId)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (!CheckIfLecturerCanAccessTheCourse(user, courseId))
return View("AccessDenied");
else
{
_repository.DeleteCourse(courseId);
return RedirectToAction("Index");
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public ActionResult EditTopic(UserInformation user, TopicForEditing topic)
{
SaveReorderedLectures(topic.Lectures);
return RedirectToAction("EditTopic", new { topicId = topic.ID });
}
public ActionResult CreateCourse(UserInformation user)
{
if (user == null) return View("UnauthorizedAccess");
else if (user.IsStudent) return View("StudentCourseCreation");
else
{
SelectList categories = new SelectList(_repository.CourseCategories, "ID", "Name");
SelectList courseTypes = new SelectList(_repository.CourseTypes, "ID", "TypeName");
ViewBag.Categories = categories;
ViewBag.CourseTypes = courseTypes;
Lecturer creator = _repository.Lecturers.Where<Lecturer>(x => x.ID == user.UserId).FirstOrDefault<Lecturer>();
return View("CreateCourse", new Course() { LecturerId = user.UserId.GetValueOrDefault() });
}
}
public ActionResult CreateCourse(UserInformation user, Course course)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (ModelState.IsValid)
{
_repository.SaveCourse(course);
return View("CreationSucceed");
}
else
{
SelectList categories = new SelectList(_repository.CourseCategories, "ID", "Name");
SelectList courseTypes = new SelectList(_repository.CourseTypes, "ID", "TypeName");
ViewBag.Categories = categories;
ViewBag.CourseTypes = courseTypes;
return View("CreateCourse", course);
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public PartialViewResult Login(UserInformation info)
{
if (info == null)
return PartialView(new AccountModel());
else if (info.IsStudent)
{
return PartialView("StudentProfile", new AccountModel() { UserName = info.UserName });
}
else
{
return PartialView("LecturerProfile", new AccountModel() { UserName = info.UserName });
}
}
public ActionResult SaveLecture(UserInformation user, LectureForEditing lecture)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (!ModelState.IsValid) return View("EditLecture", lecture);
else
{
Lecture lect = new Lecture()
{
ID = lecture.ID,
Name = lecture.Name,
TopicId = lecture.TopicId,
OrderNumber = lecture.OrderNumber,
Homework = lecture.Homework,
LectureContent = lecture.LectureContent
};
_repository.SaveLecture(lect);
return RedirectToAction("EditTopic", "Topic", new { topicId = lecture.TopicId });
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
private bool CheckIfLecturerHasAccessToTheTopic(UserInformation user, Guid topicId)
{
return user.UserId == _repository.Courses.Where(x => x.ID == _repository.CourseTopics.Where(y => y.ID == topicId).FirstOrDefault().CourseId).First().LecturerId;
}
public MvcHtmlString GetLectureContent(UserInformation user, Guid lectureId)
{
var lect = _repository.Lectures.Where(x => x.ID == lectureId);
if (lect.Count() > 0)
{
StringBuilder sb = new StringBuilder();
sb.Append(lect.First().LectureContent);
if (lect.First().Homework != null && lect.First().Homework.Length > 0)
{
sb.Append("<hr/>");
sb.Append("<h3>Homework</h3>");
sb.Append(lect.First().Homework);
}
return MvcHtmlString.Create(sb.ToString());
}
else
{
return MvcHtmlString.Create("<h3>There is no more lectures to show.</h3>");
}
}
public ActionResult EditCourse(UserInformation user, Guid ID)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (!CheckIfLecturerCanAccessTheCourse(user, ID))
return View("AccessDenied");
else
{
CourseDetails details = new CourseDetails();
var course = _repository.Courses.Where(x => x.ID == ID).ToList();
if (course.Count() != 0)
{
details.CourseId = course.First().ID;
details.CourseName = course.First().Name;
details.Topics = (from x in _repository.CourseTopics where x.CourseId == details.CourseId select new Topic { TopicName = x.Name, ID = x.ID, CourseId = x.CourseId, OrderNumber = x.OrderNumber }).OrderBy(x => x.OrderNumber).ToList<Topic>();
for (int i = 0; i < details.Topics.Count; i++)
{
Guid topicId = details.Topics[i].ID;
details.Topics[i].LecturesCount = _repository.Lectures.Where(x => x.TopicId == topicId).Count();
details.Topics[i].TestsCount = _repository.Tests.Where(x => x.TopicId == topicId).Count();
}
//details.Topics = _repository.CourseTopics.Where(x => x.CourseId == details.CourseId);
}
return View(details);
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public ActionResult EditLecture(UserInformation user, Guid lectureId)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
if (!CheckIfLecturerHasAccess(user, lectureId))
return View("AccessDenied");
else
{
//Check if user can edit this lecture
Lecture l = _repository.Lectures.Where(x => x.ID == lectureId).First();
LectureForEditing lect = new LectureForEditing()
{
ID = lectureId,
Homework = l.Homework,
LectureContent = l.LectureContent,
OrderNumber = l.OrderNumber,
TopicId = l.TopicId,
Name = l.Name
};
return View(lect);
}
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public ActionResult EditCourse(UserInformation user, CourseDetails details)
{
if (user != null)
{
if (user.IsStudent)
{
return View("Students limitations");
}
else
{
try
{
foreach (var item in details.Topics)
{
_repository.SaveTopic(new CourseTopic() { ID = item.ID, CourseId = item.CourseId, Name = item.TopicName, OrderNumber = item.OrderNumber });
}
return RedirectToAction("EditCourse", new { ID = details.CourseId });
}
catch (Exception e)
{
return View("Error");
}
}
}
else return View("UnauthorizedAccess");
}
public ActionResult EditStudentProfile(UserInformation user, StudentEditProfileModel model)
{
if (user != null)
{
if (!user.IsStudent)
{
return View("Error");
}
else
{
try
{
Student student = _repository.Students.Where(x => x.ID == user.UserId).First();
student.Information = model.Information;
student.Interests = model.Interests;
student.Name = model.Name;
student.Surname = model.Surname;
_repository.SaveStudent(student);
return View("ChangesSaved");
}
catch
{
return View("Error");
}
}
}
else
{
return View("UnauthorizedAccess");
}
}
public void SaveLectureRead(UserInformation user, Guid lectureId)
{
if (user != null)
{
if (_repository.WatchedLectures.Where(x => x.StudentId == user.UserId && x.LectureId == lectureId).Count() == 0)
{
_repository.SaveWatchedLecture(new WatchedLecture()
{
CourseId = GetCourseIdByLectureId(lectureId),
LectureId = lectureId,
StudentId = user.UserId.Value
});
}
}
}
