public List <string> LoadCreateClassPage(string userName)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
return((from t in db.Teachers
where t.UserName == userName
join tc in db.TeacherCategories on t.Id equals tc.TeacherId
select tc.Category).ToList());
}
catch (Exception ex)
{
throw ex;
};
}
public bool PostMessage(Message data)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
var query = from m in db.Messages
where m.ClassId == data.ClassId
select m;
if (query.Any())
{
db.Messages.Remove(query.FirstOrDefault());
}
;
data.Date = DateTime.Now;
db.Messages.Add(data);
db.SaveChanges();
return(true);
}
catch (Exception ex)
{
throw ex;
};
}
public bool JoinClass([FromBody] UserDetails data)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
int studentId = LoginController.GetUserID(data.userName, "student");
try
{
db.StudentsToClasses.Add(new StudentToClasses
{
ClassId = data.classId,
StudentId = studentId
});
db.SaveChanges();
return(true);
}
catch (Exception ex)
{
throw ex;
};
}
public bool AddLessons(ClassGroupDTO data)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
foreach (var id in data.lessonIDs)
{
var query = from lc in db.LessonsToClasses
where lc.ClassId == data.Id && lc.LessonId == id
select lc;
query.First().IsActive = true;
}
;
db.SaveChanges();
return(true);
}
catch (Exception ex)
{
throw ex;
};
}
public List <LessonResDistribution> LoadPersonalGraph(int classGroupId, string userName)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
List <LessonResDistribution> RDist = new List <LessonResDistribution>();
try
{
int studentId = LoginController.GetUserID(userName, "student");
var results = from lc in db.LessonsToClasses
where lc.ClassId == classGroupId
join l in db.Lessons on lc.LessonId equals l.Id
join rl in db.ResultInLessons on l.Id equals rl.LessonId
where rl.StudentId == studentId
group rl by l.SeqNum into lRes
select lRes;
if (results.Any())
{
//Loop through each lesson and assign results
foreach (var lesson in results)
{
RDist.Add(new LessonResDistribution
{
LNum = lesson.Key,
AvgRes = lesson.Average(x => x.Result),
BestRes = lesson.Max(x => x.Result)
});
}
;
//Adding empty lessons objects to fill up the list to 4
for (int i = RDist.Count; i < NUM_OF_LESSONS_IN_CLASS; i++)
{
RDist.Add(new LessonResDistribution()
{
LNum = i + 1,
AvgRes = 0,
BestRes = 0
});
}
;
}
return(RDist);
}
catch (Exception ex)
{
throw ex;
};
}
public StudentToClassesDTO GetStudentsNamesByClassGroup(int classGroupId)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
var query = from sg in db.StudentsToClasses
join s in db.Students on sg.StudentId equals s.Id
join c in db.ClassGroups on sg.ClassId equals c.Id
where sg.ClassId == classGroupId
select new
{
c.Category,
c.Grade,
s.Name
} into result
group result by new
{
result.Category,
result.Grade
};
StudentToClassesDTO studentsNamesInClassGroup = new StudentToClassesDTO(query.First().Key.Category, query.First().Key.Grade);
foreach (var student in query.First())
{
studentsNamesInClassGroup.Students.Add(student.Name);
}
return(studentsNamesInClassGroup);
}
catch (InvalidOperationException ex)
{
if (ex.Message == "Sequence contains no elements")
{
return(new StudentToClassesDTO("No such class group ot the class is empty", 0));
}
else
{
return(new StudentToClassesDTO("An error accured", 0));
}
};
}
public TeacherProfile TeacherProfilePage(string userName)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
TeacherProfile profile = new TeacherProfile();
profile.categories = new List <string>();
profile.classes = new List <SCourses>();
int teacherId = LoginController.GetUserID(userName, "teacher");
var db = new DBModel();
try
{
//Subjects list
profile.categories = (from tcat in db.TeacherCategories
where tcat.TeacherId == teacherId
select tcat.Category).ToList();
//Classes list (CLassID, NAME, GRADE,)
profile.classes = (from tcl in db.TeachersToClasses
where tcl.TeacherId == teacherId
join cg in db.ClassGroups on tcl.ClassId equals cg.Id
orderby cg.Category, cg.Grade
select new SCourses
{
CourseId = cg.Id,
Category = cg.Category,
Grade = cg.Grade
}).ToList();
profile.Picture = (from u in db.Users
where u.UserName == userName
select u.Picture).First();
}
catch (Exception ex)
{
throw ex;
};
return(profile);
}
public List <ExamQuestionsDTO> GetExamQuestions(int classId)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
var myClass = (from c in db.ClassGroups
where c.Id == classId
select new {
c.Grade,
c.Category
}).First();
var query = from q in db.ExamQuestions
where q.Category == myClass.Category && q.Grade == myClass.Grade
select new ExamQuestionsDTO
{
Id = q.Id,
Category = q.Category,
Grade = q.Grade,
Question = q.Question,
AnswerA = q.AnswerA,
AnswerB = q.AnswerB,
AnswerC = q.AnswerC,
AnswerD = q.AnswerD,
RightAnswer = q.RightAnswer
};
return(query.ToList());
}
catch (Exception ex)
{
throw ex;
};
}
public bool CreateExam(ExamDTO data)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
var query = from e in db.Exams
where e.ClassId == data.ClassId
select e;
foreach (var rec in query)
{
db.Exams.Remove(rec);
}
;
foreach (var id in data.QuestionIDs)
{
db.Exams.Add(new Exam
{
ClassId = data.ClassId,
QuestionId = id
});
}
;
db.SaveChanges();
return(true);
}
catch (Exception ex)
{
throw ex;
};
}
public ClassGroupDTO LoadAddLessonsPage(string category, int grade)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
ClassGroupDTO classGroup = new ClassGroupDTO();
classGroup.lessons = new List <LessonDTO>();
classGroup.lessons = (from l in db.Lessons
where l.Category == category && l.Grade == grade
orderby l.SeqNum
select new LessonDTO
{
Id = l.Id,
Name = l.Name,
Description = l.Description,
SeqNum = l.SeqNum
}).ToList();
return(classGroup);
}
catch (Exception ex)
{
throw ex;
};
}
public bool CreateClass(ClassGroupDTO data)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
int schoolId = GetSchoolId(data.TeacherUserName, "teacher");
//Create new ClassGroup record
db.ClassGroups.Add(new ClassGroup
{
Category = data.Category,
Grade = data.Grade,
SchoolId = schoolId
});
db.SaveChanges();
int classId = (from c in db.ClassGroups
where c.Category == data.Category && c.Grade == data.Grade && c.SchoolId == schoolId
orderby c.Id descending
select c.Id).First();
//Assign the teacher to the class by creating new Teacher to Class record
int teacherId = LoginController.GetUserID(data.TeacherUserName, "teacher");
db.TeachersToClasses.Add(new TeacherToClasses
{
ClassId = classId,
TeacherId = teacherId
});
//Get the list of all lessons of the category for the grade
var query = from l in db.Lessons
where l.Category == data.Category && l.Grade == data.Grade
select l.Id;
//Add all the lessons of the category for the grade to the new class group
foreach (var lessonId in query)
{
bool isActive;
if (data.lessonIDs.Exists(x => x == lessonId))
{
isActive = true;
}
else
{
isActive = false;
};
db.LessonsToClasses.Add(new LessonsToClass
{
ClassId = classId,
LessonId = lessonId,
IsActive = isActive
});
}
;
db.SaveChanges();
return(true);
}
catch (Exception ex)
{
throw ex;
};
}
public LessonStats LessonStats(int classGroupId, int lessonNum)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
LessonStats lStats = new LessonStats
{
QLDist = new List <QResLessonDistribution>(),
Students = new List <PersonDTO>()
};
try
{
//Get all the records of the results in the lesson
var results = from lc in db.LessonsToClasses
where lc.ClassId == classGroupId
join l in db.Lessons on lc.LessonId equals l.Id
where l.SeqNum == lessonNum
join rl in db.ResultInLessons on l.Id equals rl.LessonId
join sc in db.StudentsToClasses on lc.ClassId equals sc.ClassId
where sc.StudentId == rl.StudentId
select rl;
if (results.Any())
{
//Get max result by student
var studentsBestResults = from r in results
group r by r.StudentId into stdRes
select stdRes.Max(x => x.Result);
//Count how many students achieved PASS result
lStats.StFinished = 0;
foreach (var stdRes in studentsBestResults)
{
if (stdRes >= StudyController.MIN_RES_TO_PASS)
{
lStats.StFinished++;
}
;
}
;
//Getting questions results
int lessonId = GetLessonId(lessonNum, classGroupId);
var query = from rq in db.ResultInQuestions
where rq.LessonId == lessonId
group rq by rq.QuestionNum into qRes
select qRes;
foreach (var question in query)
{
lStats.QLDist.Add(new QResLessonDistribution
{
QNum = question.Key,
RightCount = 0,
WrongCount = 0
});
foreach (var res in question)
{
if (res.Result == true)
{
lStats.QLDist.Last().RightCount++;
}
else
{
lStats.QLDist.Last().WrongCount++;
};
}
;
}
;
//Adding empty question objects to fill up the list to 10
for (int i = lStats.QLDist.Count; i < NUM_OF_QUESTIONS_IN_LESSON; i++)
{
lStats.QLDist.Add(new QResLessonDistribution()
{
QNum = i + 1,
RightCount = 0,
WrongCount = 0
});
}
;
lStats.StTried = studentsBestResults.Count();
lStats.FinishedOfTriedPercent = (double)lStats.StFinished / (double)lStats.StTried;
lStats.AvgBestRes = studentsBestResults.Average();
lStats.AvgRes = results.Average(x => x.Result);
}
else
{
lStats.SetDefaults();
};
//Build students list
lStats.Students = GetStudentsList(classGroupId);
return(lStats);
}
catch (Exception ex)
{
throw ex;
};
}
public StudentProfile StudentProfilePage(string userName)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
StudentProfile profile = new StudentProfile
{
sCourses = new List <SCourses>(),
sClasses = new List <SClasses>(),
Badges = new bool[] { false, false, false, false, false, false, false, false, false }
};
int studentId = LoginController.GetUserID(userName, "student");
var db = new DBModel();
try
{
//Courses tab
var query = from sc in db.StudentsToClasses
where sc.StudentId == studentId
join c in db.ClassGroups on sc.ClassId equals c.Id
select c;
foreach (var item in query)
{
profile.sCourses.Add(new SCourses
{
CourseId = item.Id,
Category = item.Category,
Grade = item.Grade
});
}
;
var query2 = from sc in db.StudentsToClasses
join c in db.ClassGroups on sc.ClassId equals c.Id
join pc in db.ProgressInClasses on c.Id equals pc.ClassId
where sc.StudentId == studentId && pc.StudentId == studentId
orderby c.Grade descending, pc.Result
select pc;
foreach (var item in query2)
{
foreach (var item2 in profile.sCourses)
{
if (item.ClassId == item2.CourseId)
{
item2.Result = item.Result;
break;
}
;
}
;
}
;
//Clases and assignments tab
var query3 = from sc in db.StudentsToClasses
join lc in db.LessonsToClasses on sc.ClassId equals lc.ClassId
where sc.StudentId == studentId && lc.IsActive == true
join l in db.Lessons on lc.LessonId equals l.Id
orderby l.SeqNum descending
select new { lc, l };
foreach (var item in query3.ToList())
{
var query4 = from rl in db.ResultInLessons
where rl.StudentId == studentId && rl.LessonId == item.l.Id
orderby rl.Result descending
select rl.Result;
profile.sClasses.Add(new SClasses
{
CourseId = item.lc.ClassId,
Category = item.l.Category,
LessonNum = item.l.SeqNum,
Name = item.l.Name,
Description = item.l.Description,
Attempts = query4.Count(),
BestRes = query4.FirstOrDefault()
});
}
;
profile.sClasses.OrderByDescending(x => x.LessonNum).OrderBy(y => y.Attempts);
//Achievements tab
profile.qCorrAnswered = StatisticsController.QCorrAnswered(studentId);
profile.lessonsCompleted = StatisticsController.LessonsCompleted(studentId);
var query5 = from pc in db.ProgressInClasses
where pc.StudentId == studentId && pc.Result != 0
orderby pc.Result descending
select pc;
//If a record for the student in the class exists
if (query5.Any())
{
profile.avgCourseRes = query5.Average(x => x.Result);
profile.bestCourseRes = query5.First().Result;
}
//If no previous record exists
else
{
profile.avgCourseRes = profile.bestCourseRes = 0;
};
profile.Picture = (from u in db.Users
where u.UserName == userName
select u.Picture).First();
//Badges
//---1
var tempQuery = (from rq in db.ResultInQuestions
where rq.StudentId == studentId && rq.Result
group rq by new
{
rq.LessonId,
rq.QuestionNum
} into question
select question).Count();
profile.Badges[0] = (tempQuery >= QUESTIONS_CORRECT_ANSWER) ? true : false;
//--2
var tempQuery2 = from rl in db.ResultInLessons
where rl.StudentId == studentId
join lc in db.LessonsToClasses on rl.LessonId equals lc.LessonId
join c in db.ClassGroups on lc.ClassId equals c.Id
where c.Category == "Math"
group rl by rl.LessonId into lesRes
select lesRes;
if (tempQuery2.Count() == NUM_OF_LESSONS_IN_CLASS)
{
foreach (var les in tempQuery2)
{
profile.Badges[1] = (les.Max(x => x.Result) >= StudyController.MIN_RES_TO_PASS) ? true : false;
}
;
}
;
//--3
tempQuery2 = from rl in db.ResultInLessons
where rl.StudentId == studentId
join lc in db.LessonsToClasses on rl.LessonId equals lc.LessonId
join c in db.ClassGroups on lc.ClassId equals c.Id
where c.Category == "Science"
group rl by rl.LessonId into lesRes
select lesRes;
if (tempQuery2.Count() == NUM_OF_LESSONS_IN_CLASS)
{
foreach (var les in tempQuery2)
{
profile.Badges[2] = (les.Max(x => x.Result) >= StudyController.MIN_RES_TO_PASS) ? true : false;
}
;
}
;
//--4,5,6,9
profile.Badges[3] = profile.Badges[4] = profile.Badges[5] = profile.Badges[8] = false;
//--7
var tempQuery3 = from rl in db.ResultInLessons
where rl.StudentId == studentId
join lc in db.LessonsToClasses on rl.LessonId equals lc.LessonId
group new { lc, rl } by lc.ClassId into classRes
select classRes;
foreach (var classR in tempQuery3)
{
if (classR.Min(x => x.rl.Result) >= StudyController.MIN_RES_TO_PASS && classR.Select(x => x.lc.LessonId).Distinct().Count() == NUM_OF_LESSONS_IN_CLASS)
{
profile.Badges[6] = true;
break;
}
;
}
;
//--8
var tempQuery4 = from rl in db.ResultInLessons
where rl.StudentId == studentId
join lc in db.LessonsToClasses on rl.LessonId equals lc.LessonId
group new { lc, rl } by lc.ClassId into classRes
select classRes;
int temp = 0;
foreach (var classR in tempQuery4)
{
if (classR.Average(x => x.rl.Result) == MAX_RES && classR.Select(x => x.lc.LessonId).Distinct().Count() == NUM_OF_LESSONS_IN_CLASS)
{
temp++;
}
;
}
;
if (temp >= BADGE_8_REQ)
{
profile.Badges[7] = true;
}
;
}
catch (Exception ex)
{
throw ex;
};
return(profile);
}
public List <QResLessonDistribution> LessonInStudentStats(int classGroupId, int studentId, int lessonNum)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
List <QResLessonDistribution> qDist = new List <QResLessonDistribution>();
try
{
int lessonId = GetLessonId(lessonNum, classGroupId);
var results = from rq in db.ResultInQuestions
where rq.LessonId == lessonId && rq.StudentId == studentId
group rq by rq.QuestionNum into qRes
select qRes;
if (results.Any())
{
foreach (var lesson in results)
{
qDist.Add(new QResLessonDistribution
{
QNum = lesson.Key,
RightCount = 0,
WrongCount = 0
});
foreach (var res in lesson)
{
if (res.Result == true)
{
qDist.Last().RightCount++;
}
else
{
qDist.Last().WrongCount++;
};
}
}
;
//Adding empty question objects to fill up the list to 10
for (int i = qDist.Count; i < NUM_OF_QUESTIONS_IN_LESSON; i++)
{
qDist.Add(new QResLessonDistribution()
{
QNum = i + 1,
RightCount = 0,
WrongCount = 0
});
}
;
}
;
return(qDist);
}
catch (Exception ex)
{
throw ex;
};
}
public StudentStats StudentStats(int classGroupId, int studentId)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
StudentStats sStats = new StudentStats
{
RDist = new List <LessonResDistribution>()
};
try
{
//Get all the records of the results in the class grouped by lesson, then grouped by student
var results = from lc in db.LessonsToClasses
where lc.ClassId == classGroupId
join l in db.Lessons on lc.LessonId equals l.Id
join rl in db.ResultInLessons on l.Id equals rl.LessonId
where rl.StudentId == studentId
group rl by l.SeqNum into lRes
select lRes;
if (results.Any())
{
/*------------------------------------------------------------------------------------------
* Lesson Results Distribution
*------------------------------------------------------------------------------------------*/
//Loop through each lesson and assign results
foreach (var lesson in results)
{
sStats.RDist.Add(new LessonResDistribution
{
LNum = lesson.Key,
AvgRes = lesson.Average(x => x.Result),
BestRes = lesson.Max(x => x.Result)
});
}
;
//Adding empty lessons objects to fill up the list to 4
for (int i = sStats.RDist.Count; i < NUM_OF_LESSONS_IN_CLASS; i++)
{
sStats.RDist.Add(new LessonResDistribution()
{
LNum = i + 1,
AvgRes = 0,
BestRes = 0
});
}
;
/*-------------------------------------------------------------------------------------------
* Course average result
*------------------------------------------------------------------------------------------*/
sStats.AvgRes = (from pc in db.ProgressInClasses
where pc.ClassId == classGroupId && pc.StudentId == studentId
select pc.Result).FirstOrDefault();
}
else
{
sStats.AvgRes = 0;
};
return(sStats);
}
catch (Exception ex)
{
throw ex;
};
}
public ClassGroupDTO LoadClassPage(int courseId, string userName)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
try
{
ClassGroupDTO classGroup = (from c in db.ClassGroups
where c.Id == courseId
select new ClassGroupDTO
{
Category = c.Category,
Grade = c.Grade
}).First();
classGroup.Teacher = (from tc in db.TeachersToClasses
where tc.ClassId == courseId
join t in db.Teachers on tc.TeacherId equals t.Id
select t.Name).First();
classGroup.numOfStudents = (from sc in db.StudentsToClasses
where sc.ClassId == courseId
select sc).Count();
classGroup.message = (from m in db.Messages
where m.ClassId == courseId
select new MessageDTO {
Text = m.Text,
Date = m.Date
}).FirstOrDefault();
classGroup.lessons = new List <LessonDTO>();
classGroup.lessons = (from lc in db.LessonsToClasses
where lc.ClassId == courseId
join l in db.Lessons on lc.LessonId equals l.Id
orderby l.SeqNum
select new LessonDTO
{
Id = l.Id,
Name = l.Name,
IsActive = lc.IsActive,
Description = l.Description,
SeqNum = l.SeqNum
}).ToList();
classGroup.ExamExists = (from e in db.Exams
where e.ClassId == courseId
select e).Any();
string role = (from u in db.Users
where u.UserName == userName
select u.Role).FirstOrDefault();
if (role == "student")
{
int studentId = LoginController.GetUserID(userName, "student");
foreach (var lesson in classGroup.lessons)
{
lesson.Result = (from rl in db.ResultInLessons
where rl.StudentId == studentId && rl.LessonId == lesson.Id
group rl by rl.LessonId into lessonRes
select lessonRes.Max(x => x.Result)).FirstOrDefault();
if (lesson.Result >= MIN_RES_TO_PASS)
{
lesson.IsPassed = true;
}
else
{
lesson.IsPassed = false;
};
}
;
}
;
return(classGroup);
}
catch (Exception ex)
{
throw ex;
};
}
public List <ClassGroupDTO> JoinClass(string userName)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
List <ClassGroupDTO> classesToJoin = new List <ClassGroupDTO>();
List <ClassGroupDTO> tempList = new List <ClassGroupDTO>();
try
{
int schoolId = GetSchoolId(userName, "student");
int grade = GetGrade(userName);
int studentId = LoginController.GetUserID(userName, "student");
//Get list of all classes in the student's school and grade
tempList = (from c in db.ClassGroups
where c.SchoolId == schoolId && c.Grade == grade
join tc in db.TeachersToClasses on c.Id equals tc.ClassId
join t in db.Teachers on tc.TeacherId equals t.Id
select new ClassGroupDTO
{
Id = c.Id,
Category = c.Category,
Teacher = t.Name
}).ToList();
classesToJoin = tempList.ToList();
//Get list of all classes that the student is registered for
var query2 = (from sc in db.StudentsToClasses
where sc.StudentId == studentId
join c in db.ClassGroups on sc.ClassId equals c.Id
select c.Category).ToList();
int i = 0; //index diference when items deleted from the main list
foreach (var item in tempList)
{
foreach (var item2 in query2)
{
if (item.Category == item2)
{
classesToJoin.RemoveAt(tempList.IndexOf(item) - i);
i++;
break;
}
}
;
}
;
return(classesToJoin);
}
catch (Exception ex)
{
throw ex;
};
}
public ClassStats ClassStats(int classGroupId)
{
try
{
LoginController.checkOnAccess(this.Request.Headers);
}
catch (Exception ex)
{
throw ex;
};
var db = new DBModel();
ClassStats cStats = new ClassStats
{
RDist = new List <LessonResDistribution>(),
ADist = new List <LessonAttempts>()
};
try
{
//Get all the records of the results in the class grouped by lesson, then grouped by student
var results = from lc in db.LessonsToClasses
where lc.ClassId == classGroupId
join l in db.Lessons on lc.LessonId equals l.Id
join rl in db.ResultInLessons on l.Id equals rl.LessonId
join sc in db.StudentsToClasses on lc.ClassId equals sc.ClassId
where sc.StudentId == rl.StudentId
group rl by l.SeqNum into lRes
select new {
lRes.Key,
studentsRes = from lrg in lRes
group lrg by lrg.StudentId into studRes
select studRes
};
if (results.Any())
{
List <double> avgRes;
List <double> avgBestRes;
/*------------------------------------------------------------------------------------------
* Lesson Results Distribution
*------------------------------------------------------------------------------------------*/
//Loop through each lesson
foreach (var lesson in results)
{
avgRes = new List <double>();
avgBestRes = new List <double>();
//Create lesson object
cStats.RDist.Add(new LessonResDistribution
{
LNum = lesson.Key
});
//Loop through each student's results in the lesson and calc his average and max results
foreach (var res in lesson.studentsRes)
{
avgRes.Add(res.Average(x => x.Result));
avgBestRes.Add(res.Max(x => x.Result));
}
;
//Calc overall 'average' and 'average best' results
cStats.RDist.Last().AvgRes = avgRes.Average();
cStats.RDist.Last().AvgBestRes = avgBestRes.Average();
}
;
//Adding empty lessons objects to fill up the list to 10
for (int i = cStats.RDist.Count; i < NUM_OF_LESSONS_IN_CLASS; i++)
{
cStats.RDist.Add(new LessonResDistribution()
{
LNum = i + 1,
AvgRes = 0,
AvgBestRes = 0
});
}
;
/*------------------------------------------------------------------------------------------
* Lesson attempts and completion distribution
*------------------------------------------------------------------------------------------*/
int passed;
//Loop through each lesson
foreach (var lesson in results)
{
passed = 0;
//Create lesson object
cStats.ADist.Add(new LessonAttempts
{
LNum = lesson.Key
});
//Check each student's results to see if he passed the lesson
foreach (var res in lesson.studentsRes)
{
if (res.Max(x => x.Result >= StudyController.MIN_RES_TO_PASS))
{
passed++;
}
;
}
;
cStats.ADist.Last().StFinished = passed;
cStats.ADist.Last().StTried = lesson.studentsRes.Count();
}
;
//Adding empty lessons objects to fill up the list to 4
for (int i = cStats.ADist.Count; i < NUM_OF_LESSONS_IN_CLASS; i++)
{
cStats.ADist.Add(new LessonAttempts()
{
LNum = i + 1,
StFinished = 0,
StTried = 0
});
}
;
/*-------------------------------------------------------------------------------------------
* Course average result
*------------------------------------------------------------------------------------------*/
var query = from pc in db.ProgressInClasses
where pc.ClassId == classGroupId
select pc.Result;
if (query.Any())
{
cStats.AvgRes = (double)query.Average();
}
else
{
cStats.AvgRes = 0;
};
}
else
{
cStats.AvgRes = 0;
};
return(cStats);
}
catch (Exception ex)
{
throw ex;
};
}