public async Task <UserEnrollment> EnrollUserInCourse(ApplicationUser user, Course course)
{
using (db = new AthenaDataContext())
{
// first ensure user doesnt have an enrollment for this course already.
// TODO fix with composite key on context
var currentEnrollment
= await db.UserEnrollments
.Where(enrollment => enrollment.CourseId == course.Id &&
enrollment.ApplicationUserId == user.Id).FirstOrDefaultAsync();
if (currentEnrollment == null)
{
currentEnrollment = new UserEnrollment
{
ApplicationUserId = user.Id,
CourseId = course.Id
};
db.UserEnrollments.Add(currentEnrollment);
await db.SaveChangesAsync();
}
return(currentEnrollment);
}
}
public async Task CreateChallenge(Challenge challenge)
{
using (db = new AthenaDataContext())
{
db.Challenges.Add(challenge);
await db.SaveChangesAsync();
}
}
public async Task CreateCourse(Course course)
{
using (db = new AthenaDataContext())
{
db.Courses.Add(course);
await db.SaveChangesAsync();
}
}
public async Task <IEnumerable <Course> > GetAllCourses()
{
using (db = new AthenaDataContext())
{
var courses
= await db.Courses
.OrderByDescending(c => c.DateCreated).ToListAsync();
return(courses);
}
}
public async Task <Course> FindCourseByEnrollmentCode(string enrollmentCode)
{
using (db = new AthenaDataContext())
{
var course
= await db.Courses
.Where(c => c.EnrollmentCode.ToUpper() == enrollmentCode.Trim().ToUpper()).FirstOrDefaultAsync();
return(course);
}
}
public async Task <List <CompletedChallenge> > GetUserCompletedChallenges(ApplicationUser user)
{
using (db = new AthenaDataContext())
{
var completedChallenges
= await db.CompletedChallenges
.Where(c => c.ApplicationUserId == user.Id)
.ToListAsync();
return(completedChallenges);
}
}
public async Task <CompletedChallenge> DetermingUserCompletedChallenge(Challenge challenge, ApplicationUser user)
{
using (db = new AthenaDataContext())
{
var completedChallenge
= await db.CompletedChallenges
.Where(c => c.ChallengeId == challenge.Id && c.ApplicationUserId == user.Id)
.FirstOrDefaultAsync();
return(completedChallenge);
}
}
public async Task <IEnumerable <UserEnrollment> > GetCourseUserEnrollments(Course course)
{
using (db = new AthenaDataContext())
{
var userEnrollments
= await db.UserEnrollments
.Where(u => u.CourseId == course.Id).Include(u => u.ApplicationUser)
.OrderByDescending(c => c.DateCreated).ToListAsync();
return(userEnrollments);
}
}
public async Task <Course> FindCourse(Guid id)
{
using (db = new AthenaDataContext())
{
var course
= await db.Courses
.Where(c => c.Id == id)
.FirstOrDefaultAsync();
return(course);
}
}
public async Task <List <Challenge> > GetAllChallengesByCourse(Course course)
{
using (db = new AthenaDataContext())
{
var challenges
= await db.Challenges
.Where(challenge => challenge.CourseId == course.Id)
.OrderByDescending(c => c.DateCreated)
.ToListAsync();
return(challenges);
}
}
public async Task <Challenge> FindChallenge(Guid id)
{
using (db = new AthenaDataContext())
{
var course
= await db.Challenges
.Where(c => c.Id == id)
.OrderByDescending(c => c.DateCreated)
.FirstOrDefaultAsync();
return(course);
}
}
public async Task <IEnumerable <Course> > GetEnrolledCoursesByUser(ApplicationUser user)
{
using (db = new AthenaDataContext())
{
var courses
= await db.UserEnrollments
.Where(s => s.ApplicationUserId == user.Id)
.Include(c => c.Course).Select(m => m.Course)
.OrderByDescending(c => c.DateCreated)
.ToListAsync();
return(courses);
}
}
public async Task CompleteChallenge(Challenge challenge, ApplicationUser user)
{
using (db = new AthenaDataContext())
{
var previouslyCompleted
= await db.CompletedChallenges
.Where(c => c.ChallengeId == challenge.Id && c.ApplicationUserId == user.Id)
.FirstOrDefaultAsync();
if (previouslyCompleted != null)
{
return;
}
var completedChallenge = new CompletedChallenge
{
ChallengeId = challenge.Id,
ApplicationUserId = user.Id
};
db.CompletedChallenges.Add(completedChallenge);
await db.SaveChangesAsync();
}
}
