public IHttpActionResult GetAddNewEnrollment(int courseId)
{
if (courseId == null || courseId == 0)
{
return StatusCode(HttpStatusCode.NotFound);
}
var statucosde = HttpStatusCode.NotModified;
using (StoreContext context = new StoreContext())
{
if (User.Identity.IsAuthenticated)
{
Student currentStudent = context.Students.Where(q => q.UserName == User.Identity.Name).FirstOrDefault();
if (currentStudent != null)
{
if (context.Enrollments.Where(q => q.StudentId == currentStudent.StudentId && q.CourseId == courseId).FirstOrDefault() == null)
{
context.Enrollments.Add(new Enrollment { CourseId = courseId, StudentId = currentStudent.StudentId });
context.SaveChanges();
statucosde = HttpStatusCode.OK;
}
}
}
}
return StatusCode(statucosde);
}
private ContosoMobileAppMSA.Models.ExchangeSet DataForMobileApp()
{
List<ContosoMobileAppMSA.Models.Course> coursesForSend = new List<ContosoMobileAppMSA.Models.Course>();
List<ContosoMobileAppMSA.Models.CourseActivity> activitiesForSend = new List<ContosoMobileAppMSA.Models.CourseActivity>();
List<ContosoMobileAppMSA.Models.Enrollment> enrollments = new List<ContosoMobileAppMSA.Models.Enrollment>();
List<ContosoMobileAppMSA.Models.TrainingHistory> trainingHistories = new List<ContosoMobileAppMSA.Models.TrainingHistory>();
using (StoreContext context = new StoreContext())
{
coursesForSend = context.Courses
.Select(q => new ContosoMobileAppMSA.Models.Course
{
CourseId = q.CourseId,
CourseTitle = q.CourseTitle,
Credits = q.Credits
}).ToList();
activitiesForSend = context.CourseActivities
.Select(q => new ContosoMobileAppMSA.Models.CourseActivity
{
ActivityName = q.ActivityName,
CourseActivityId = q.CourseActivityId,
ActivityType = q.ActivityTypeRef.ActivityTypeName,
CourseId = q.CourseId
})
.ToList();
if (User.Identity.IsAuthenticated)
{
Student currentStudent = context.Students.Where(q => q.UserName == User.Identity.Name).FirstOrDefault();
if (currentStudent != null)
{
enrollments = context.Enrollments.Where(q => q.StudentId == currentStudent.StudentId)
.Select(q => new ContosoMobileAppMSA.Models.Enrollment
{
CourseId = q.CourseId,
EnrollmentId = q.EnrollmentId,
GradeTitle = q.GradeRef.GradeTitle,
StudentId = q.StudentId
}).ToList();
trainingHistories = context.TrainingHistories.Where(q => q.StudentId == currentStudent.StudentId)
.Select(q => new ContosoMobileAppMSA.Models.TrainingHistory
{
CourseActivityId = q.CourseActivityId,
GradeTitle = q.GradeRef.GradeTitle,
TrainingHistoryId = q.TrainingHistoryId
}).ToList();
}
}
}
ContosoMobileAppMSA.Models.ExchangeSet result = new ContosoMobileAppMSA.Models.ExchangeSet();
result.Courses = coursesForSend;
result.CourseActivities = activitiesForSend;
result.Enrollments = enrollments;
result.TrainingHistories = trainingHistories;
return result;
}
// data for Admin chart
private ListsForChart UsersAndRoles()
{
ListsForChart listForChart = new ListsForChart();
Dictionary<string, object> parameters = new Dictionary<string, object>();
string query = "(select ur.RoleId Label, count(distinct ur.UserId) Value "
+ "from userroles ur "
+ "group by ur.RoleId) union "
+ "(select 'Student' Label, count(distinct Id) Value "
+ "from users "
+ "where Id not in (select UserId from userroles))";
using (StoreContext context = new StoreContext())
{
var result = context.Database.SqlQuery<ChartElement>(query, parameters).ToList();
listForChart.Labels = new List<string>(result.Select(q => q.Label).ToList());
listForChart.DataSets = new Dictionary<string, List<int>>()
{ { "Amount of users", new List<int>(result.Select(q => q.Value).ToList()) } };
}
return listForChart;
}
// data for teacher chart
private ListsForChart StudetsAndCourses()
{
ListsForChart listForChart = new ListsForChart();
using (StoreContext context = new StoreContext())
{
var result = context.Enrollments.GroupBy(q => q.CourseRef)
.Select(n => new ChartElement
{
Label = n.Key.CourseTitle,
Value = n.Count()//(w => w.StudentRef.Di)
})
.ToList();
listForChart.Labels = new List<string>(result.Select(q=>q.Label).ToList());
listForChart.DataSets= new Dictionary<string, List<int>>()
{ { "Amount of students", new List<int>(result.Select(q => q.Value).ToList()) } };
}
return listForChart;
}
// data for student chart
private ListsForChart GradesForActivities()
{
ListsForChart listForChart = new ListsForChart();
using (StoreContext context = new StoreContext())
{
var result = context.TrainingHistories.Where(q => q.StudentRef.UserName == User.Identity.Name)
.GroupBy(q => q.GradeRef)
.Select(n => new ChartElement
{
Label = n.Key.GradeTitle,
Value = n.Count()//(w => w.StudentRef.Di)
})
.ToList();
listForChart.Labels = new List<string>(result.Select(q => q.Label).ToList());
listForChart.DataSets = new Dictionary<string, List<int>>()
{ { "Amount of grades", new List<int>(result.Select(q => q.Value).ToList()) } };
}
return listForChart;
}
public ActionResult Index()
{
ViewBag.CurrentStudentName = "";
if (User.Identity.IsAuthenticated && !User.IsInRole("Admin") && !User.IsInRole("Teacher"))
{
Student currentStudent = null;
using (StoreContext context = new StoreContext())
{
currentStudent = context.Students.Where(q => q.UserName == User.Identity.Name).FirstOrDefault();
}
if (currentStudent != null)//find in studets user
{
ViewBag.CurrentStudentName = currentStudent.UserName;
}
else
{
ViewBag.CurrentStudentName = "newStudent";
}
}
return View();
}
