public async Task <CourseDetailDTO> GetCourseDetailAsync(int CourseId, CancellationToken cancellationToken)
{
CourseDetailDTO course = await NoTrackEntities.Include(c => c.CourseEpisods).Include(c => c.CourseStatus)
.Include(c => c.CourseLevel).Include(c => c.CustomUser).Include(c => c.Keywordkeys)
.Select(c => new CourseDetailDTO
{
CourseID = c.Id,
CourseDescription = c.CourseDescription,
CourseLevelTitle = c.CourseLevel.Title,
CoursePrice = c.CoursePrice,
CourseStatusTitle = c.CourseStatus.Title,
CourseTitle = c.CourseTitle,
CreateDate = c.CreateDate,
DemoFileName = c.DemoFileName,
Episods = c.CourseEpisods.Select(e => new EpisodDTO {
EpisodeTime = e.EpisodeTime, EpisodID = e.Id, EpisodTitle = e.Title, IsFree = e.IsFree
}).ToList(),
Keywords = c.Keywordkeys.Select(k => new KeywordDTO {
Id = k.Id, Title = k.Title
}).ToList(),
ImageName = c.ImageName,
TeacherAvatar = c.CustomUser.Avatar,
TeacherID = c.CustomUser.Id,
TeacherUserName = c.CustomUser.ShowUserName,
TotalEpisodTime = c.TotalEpisodTime,
UpdateDate = c.UpdateDate
}).FirstOrDefaultAsync(c => c.CourseID == CourseId, cancellationToken);
return(course);
}
public ActionResult AddMember(CourseDetailDTO cd)
{
var User = (TaiKhoan)Session["User"];
if (User == null)
{
return(RedirectToAction("Login", "Login"));
}
var us = ClassService.GetUserInfo((long)cd.UserID);
var course = ClassService.GetClassByID((long)cd.CourseID);
if (course.Capacity == course.NumOfPeo)
{
//Lớp đã đầy
return(Json(2, JsonRequestBehavior.AllowGet));
}
if (us == null || course == null)
{
return(Json(0, JsonRequestBehavior.AllowGet));
}
CourseDetail data = new CourseDetail();
data.UserID = us.ID;
data.CourseID = course.ID;
var checkJoin = ClassService.CheckJoinStatus(course.ID, us.ID);
if (checkJoin == false)
{
return(Json(ClassService.AddMember(data), JsonRequestBehavior.AllowGet));
}
return(Json(-1, JsonRequestBehavior.AllowGet));
}
public ActionResult CheckJoinStatus(CourseDetailDTO c)
{
var User = (TaiKhoan)Session["User"];
if (User == null)
{
return(RedirectToAction("Login", "Login"));
}
return(Json(ClassService.CheckJoinStatus((long)c.CourseID, (long)c.UserID), JsonRequestBehavior.AllowGet));
}
/// <summary>
/// Updates the start date and/or end date of a course
/// </summary>
/// <param name="course">Info about the changes in a course</param>
public void UpdateCourse(CourseDetailDTO course)
{
var toChange = _db.Courses.FirstOrDefault(x => x.ID == course.ID);
if (toChange == null)
{
throw new KeyNotFoundException();
}
toChange.StartDate = course.StartDate == null ? toChange.StartDate : course.StartDate;
toChange.EndDate = course.EndDate == null ? toChange.EndDate : course.EndDate;
_db.SaveChanges();
}
public IHttpActionResult PutCourse(int id, CourseDetailDTO courseDTO)
{
Authorize auth = new Authorize();
User authorizedUser = auth.GetAuthorizedUser(Request.Headers.GetCookies("user").FirstOrDefault());
if (authorizedUser == null)
{
return(Unauthorized());
}
Course course = db.Courses.Find(id);
if (courseDTO == null || course == null || !ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (!"Teacher".Equals(auth.GetAccessRole(authorizedUser, course)))
{
return(Unauthorized());
}
if (courseDTO.NewGradingSchemeName != null)
{
foreach (GradingScheme scheme in db.GradingSchemes)
{
if (courseDTO.NewGradingSchemeName.Equals(scheme.Name))
{
course.GradingSchemeId = scheme.Id;
break;
}
}
}
if (!courseDTO.Validate(course))
{
return(BadRequest());
}
courseDTO.Update(course);
string error = db.Update(course, Modified);
if (error != null)
{
return(BadRequest(error));
}
return(Redirect("https://" + Request.RequestUri.Host + ":" + Request.RequestUri.Port + "/Courses/" + course.Id));
}
public IHttpActionResult PostCourse(CourseDetailDTO courseDTO)
{
Authorize auth = new Authorize();
User authorizedUser = auth.GetAuthorizedUser(Request.Headers.GetCookies("user").FirstOrDefault());
if (authorizedUser == null || authorizedUser.GetTeacher() == null)
{
return(Unauthorized());
}
if (!ModelState.IsValid || !courseDTO.Validate(null))
{
return(BadRequest());
}
Course course = courseDTO.Create(authorizedUser.GetTeacher().Id);
string error = db.Update(course, Added);
if (error != null)
{
return(BadRequest(error));
}
return(Redirect("https://" + Request.RequestUri.Host + ":" + Request.RequestUri.Port + "/Courses/" + course.Id));
}
public IHttpActionResult UpdateCourse(int id, [FromBody] UpdateCourseViewModel course)
{
CourseDetailDTO input = new CourseDetailDTO();
input.ID = id;
input.StartDate = course.NewStartDate;
input.EndDate = course.NewEndDate;
try
{
_context.UpdateCourse(input);
}
catch (Exception ex)
{
if (ex is KeyNotFoundException)
{
return(NotFound());
}
return(InternalServerError());
}
return(StatusCode(HttpStatusCode.NoContent));
}
public ActionResult ReviceCourseDetail(CourseDetailDTO c)
{
var User = (TaiKhoan)Session["User"];
if (User == null)
{
return(RedirectToAction("Login", "Login"));
}
using (ELearningDB db = new ELearningDB())
{
var course = db.Courses.Find(c.CourseID);
if (course != null)
{
if (course.CourseDetails.Count < course.Capacity || course.Capacity == null)
{
if (course.Status == 1)
{
Session.Add("CourseID", c.CourseID);
}
else
{
return(Json(-3, JsonRequestBehavior.AllowGet)); //Lớp đang khóa
}
}
else
{
return(Json(-1, JsonRequestBehavior.AllowGet)); //Lớp đã đủ người
}
}
else
{
return(Json(-2, JsonRequestBehavior.AllowGet)); //Không tìm thấy lớp
}
}
return(Json(1, JsonRequestBehavior.AllowGet));
}
