public bool UpdateCoursePermission(CoursePermission permission)
{
try
{
DbContext.CoursePermission.Update(permission);
DbContext.SaveChanges();
return(true);
}
catch (Exception)
{
return(false);
}
}
public bool JoinCourse(Guid userId, Guid courseId)
{
CoursePermission permission = GetCoursePermission(userId, courseId);
if (permission == null)
{
return(permissionRepository.CreateCoursePermission(userId, courseId, false, false, true));
}
else
{
permission.Join = true;
return(permissionRepository.UpdateCoursePermission(permission));
}
}
public CourseDetailDTO GetOnlineCourseDetail(Guid userId, Guid courseId)
{
Course course = courseRepository.Get(courseId);
CoursePermission permission = permissionService.GetCoursePermission(userId, courseId);
return(new CourseDetailDTO
{
Name = course.Name,
Description = course.Description,
Owner = userRepository.Get(course.OwnerId).Username,
DateCreated = course.DateCreated,
Participants = permissionService.GetTotalJoinPermissions(course.Id),
IsJoined = permission == null ? false : permission.Join,
ImageIndex = course.ImageIndex
});
}
public bool LeaveCourse(Guid userId, Guid courseId)
{
CoursePermission permission = GetCoursePermission(userId, courseId);
if (permission == null)
{
return(true);
}
if (!permission.Write && !permission.Authorize)
{
return(permissionRepository.DeleteCoursePermission(permission) && chapterRepository.DeleteProgress(userId, courseId));
}
else
{
permission.Join = false;
return(permissionRepository.UpdateCoursePermission(permission) && chapterRepository.DeleteProgress(userId, courseId));
}
}
