/// <summary>
/// Adds a submission to the given assignment for the given student
/// The submission should use the current time as its DateTime
/// You can get the current time with DateTime.Now
/// The score of the submission should start as 0 until a Professor grades it
/// If a Student submits to an assignment again, it should replace the submission contents
/// and the submission time (the score should remain the same).
/// Does *not* automatically reject late submissions.
/// </summary>
/// <param name="subject">The course subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester for the class the assignment belongs to</param>
/// <param name="year">The year part of the semester for the class the assignment belongs to</param>
/// <param name="category">The name of the assignment category in the class</param>
/// <param name="asgname">The new assignment name</param>
/// <param name="uid">The student submitting the assignment</param>
/// <param name="contents">The text contents of the student's submission</param>
/// <returns>A JSON object containing {success = true/false}.</returns>
public IActionResult SubmitAssignmentText(string subject, int num, string season, int year,
string category, string asgname, string uid, string contents)
{
using (Team36LMSContext db = new Team36LMSContext())
{
var query =
from c in db.Courses
join cl in db.Classes on c.CourseId equals cl.CourseId
where c.Subject == subject && c.Number == num && cl.Season == season && cl.Year == year
join e in db.Enrollment on uid equals e.UId
where e.ClassId == cl.ClassId
join ac in db.AssignmentCategories on e.ClassId equals ac.ClassId
where ac.Name == category
join assignment in db.Assignments on ac.Acid equals assignment.Acid
where assignment.Name == asgname
select assignment.Aid;
var assignmentID = query.First();
//System.Diagnostics.Debug.WriteLine(assignmentID);
var query2 =
from s in db.Submission
where s.UId == uid && s.Aid == assignmentID
select s;
if (query2.Count() != 0)
{
//update
query2.First().Contents = contents;
query2.First().DateTime = DateTime.Now;
db.SaveChanges();
return(Json(new { success = true }));
}
Submission newS = new Submission();
newS.UId = uid;
newS.DateTime = DateTime.Now;
newS.Score = 0;
newS.Contents = contents;
newS.Aid = assignmentID;
db.Submission.Add(newS);
db.SaveChanges();
return(Json(new { success = true }));
}
}
/// <summary>
/// Gets a JSON array of all the submissions to a certain assignment.
/// Each object in the array should have the following fields:
/// "fname" - first name
/// "lname" - last name
/// "uid" - user ID
/// "time" - DateTime of the submission
/// "score" - The score given to the submission
///
/// </summary>
/// <param name="subject">The course subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester for the class the assignment belongs to</param>
/// <param name="year">The year part of the semester for the class the assignment belongs to</param>
/// <param name="category">The name of the assignment category in the class</param>
/// <param name="asgname">The name of the assignment</param>
/// <returns>The JSON array</returns>
public IActionResult GetSubmissionsToAssignment(string subject, int num, string season, int year, string category, string asgname)
{
using (Team36LMSContext db = new Team36LMSContext())
{
var query = from s in db.Submission
join st in db.Students on s.UId equals st.UId
join a in db.Assignments on s.Aid equals a.Aid
where a.Name == asgname
join ac in db.AssignmentCategories on a.Acid equals ac.Acid
where ac.Name == category
join c in db.Classes on ac.ClassId equals c.ClassId
where c.Season == season && c.Year == year
join cou in db.Courses on c.CourseId equals cou.CourseId
where cou.Subject == subject && cou.Number == num
select new
{
fname = st.FirstName,
lname = st.LastName,
uid = st.UId,
time = s.DateTime,
score = s == null ? null : (uint?)s.Score
};
db.SaveChanges();
return(Json(query.ToArray()));
}
}
/// <summary>
/// Set the score of an assignment submission
/// </summary>
/// <param name="subject">The course subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester for the class the assignment belongs to</param>
/// <param name="year">The year part of the semester for the class the assignment belongs to</param>
/// <param name="category">The name of the assignment category in the class</param>
/// <param name="asgname">The name of the assignment</param>
/// <param name="uid">The uid of the student who's submission is being graded</param>
/// <param name="score">The new score for the submission</param>
/// <returns>A JSON object containing success = true/false</returns>
public IActionResult GradeSubmission(string subject, int num, string season, int year, string category, string asgname, string uid, int score)
{
using (Team36LMSContext db = new Team36LMSContext())
{
var query = from s in db.Submission
where s.UId == uid
join a in db.Assignments on s.Aid equals a.Aid
where a.Name == asgname
join ac in db.AssignmentCategories on a.Acid equals ac.Acid
where ac.Name == category
join c in db.Classes on ac.ClassId equals c.ClassId
where c.Season == season && c.Year == year
join cou in db.Courses on c.CourseId equals cou.CourseId
where cou.Subject == subject && cou.Number == num
select s;
foreach (var s in query)
{
s.Score = (uint)score;
}
var query2 = from s in db.Submission
where s.UId == uid
join a in db.Assignments on s.Aid equals a.Aid
join ac in db.AssignmentCategories on a.Acid equals ac.Acid
select new
{
score = s.Score,
weight = ac.GradingWeight
};
double newOverallGrade = 0;
foreach (var i in query2)
{
double w = i.weight;
double weight = w / 100.0;
double s = i.score;
newOverallGrade += (s * weight);
}
var query3 = from e in db.Enrollment
where e.UId == uid
select e;
foreach (var i in query3)
{
i.Grade = newOverallGrade.ToString();
}
db.SaveChanges();
return(Json(new { success = true }));
}
}
/// <summary>
/// Creates a new assignment for the given class and category.
/// </summary>
/// <param name="subject">The course subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester for the class the assignment belongs to</param>
/// <param name="year">The year part of the semester for the class the assignment belongs to</param>
/// <param name="category">The name of the assignment category in the class</param>
/// <param name="asgname">The new assignment name</param>
/// <param name="asgpoints">The max point value for the new assignment</param>
/// <param name="asgdue">The due DateTime for the new assignment</param>
/// <param name="asgcontents">The contents of the new assignment</param>
/// <returns>A JSON object containing success = true/false,
/// false if an assignment with the same name already exists in the same assignment category.</returns>
public IActionResult CreateAssignment(string subject, int num, string season, int year, string category, string asgname, int asgpoints, DateTime asgdue, string asgcontents)
{
int newAssignmentID = 1;
using (Team36LMSContext db = new Team36LMSContext())
{
var query = (from a in db.Assignments
where a.Name == asgname
join ac in db.AssignmentCategories on a.Acid equals ac.Acid
select a).FirstOrDefault();
if (query != null)
{
return(Json(new { success = false }));
}
var query2 = (from ac in db.AssignmentCategories
where ac.Name == category
join c in db.Classes on ac.ClassId equals c.ClassId
where c.Year == year && c.Season == season
join cou in db.Courses on c.CourseId equals cou.CourseId
where cou.Number == num && cou.Subject == subject
select new
{
assiCat = ac.Acid
}).FirstOrDefault();
var assignmentIDs = (from a in db.Assignments
select a.Aid);
List <int> list = new List <int>();
foreach (int a in assignmentIDs)
{
list.Add(a);
}
if (list.Count() > 0)
{
newAssignmentID = list.Max() + 1;
}
Assignments assignment = new Assignments();
assignment.Name = asgname;
assignment.Contents = asgcontents;
assignment.Due = asgdue;
assignment.MaxPointValue = (uint)asgpoints;
assignment.Aid = newAssignmentID;
assignment.Acid = query2.assiCat;
db.Assignments.Add(assignment);
db.SaveChanges();
return(Json(new { success = true }));
}
}
/// <summary>
/// Creates a new assignment category for the specified class.
/// </summary>
/// <param name="subject">The course subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester for the class the assignment belongs to</param>
/// <param name="year">The year part of the semester for the class the assignment belongs to</param>
/// <param name="category">The new category name</param>
/// <param name="catweight">The new category weight</param>
/// <returns>A JSON object containing {success = true/false},
/// false if an assignment category with the same name already exists in the same class.</returns>
public IActionResult CreateAssignmentCategory(string subject, int num, string season, int year, string category, int catweight)
{
int newAssignmentCatID = 1;
using (Team36LMSContext db = new Team36LMSContext())
{
var query = (from ac in db.AssignmentCategories
where ac.Name == category
join c in db.Classes on ac.ClassId equals c.ClassId
select ac).FirstOrDefault();
if (query != null)
{
return(Json(new { success = false }));
}
var query2 = (from c in db.Classes
where c.Year == year && c.Season == season
join cou in db.Courses on c.CourseId equals cou.CourseId
where cou.Number == num && cou.Subject == subject
select new
{
assiClassID = c.ClassId
}).FirstOrDefault();
var assignmentCatIDs = (from ac in db.AssignmentCategories
select ac.Acid);
List <int> list = new List <int>();
foreach (int ac in assignmentCatIDs)
{
list.Add(ac);
}
if (list.Count() > 0)
{
newAssignmentCatID = list.Max() + 1;
}
AssignmentCategories assiCat = new AssignmentCategories();
assiCat.Acid = (uint)newAssignmentCatID;
assiCat.Name = category;
assiCat.GradingWeight = (uint)catweight;
assiCat.ClassId = query2.assiClassID;
db.AssignmentCategories.Add(assiCat);
db.SaveChanges();
return(Json(new { success = true }));
}
}
/// <summary>
/// Creates a course.
/// A course is uniquely identified by its number + the subject to which it belongs
/// </summary>
/// <param name="subject">The subject abbreviation for the department in which the course will be added</param>
/// <param name="number">The course number</param>
/// <param name="name">The course name</param>
/// <returns>A JSON object containing {success = true/false},
/// false if the Course already exists.</returns>
public IActionResult CreateCourse(string subject, int number, string name)
{
int newCourseID = 1;
using (Team36LMSContext db = new Team36LMSContext())
{
var query = (from c in db.Courses
where c.Subject == subject &&
c.Number == number
select c).FirstOrDefault();
if (query != null)
{
return(Json(new { success = false }));
}
var courses = (from c in db.Courses
select c.CourseId);
List <int> list = new List <int>();
foreach (int courseID in courses)
{
list.Add(courseID);
}
if (list.Count() > 0)
{
newCourseID = list.Max() + 1;
}
Courses newCourse = new Courses();
newCourse.Subject = subject;
newCourse.Number = (uint)number;
newCourse.Name = name;
newCourse.CourseId = (uint)newCourseID;
db.Courses.Add(newCourse);
db.SaveChanges();
return(Json(new { success = true }));
}
}
/// <summary>
/// Enrolls a student in a class.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="num">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="uid">The uid of the student</param>
/// <returns>A JSON object containing {success = {true/false},
/// false if the student is already enrolled in the Class.</returns>
public IActionResult Enroll(string subject, int num, string season, int year, string uid)
{
using (Team36LMSContext db = new Team36LMSContext())
{
var query =
from c in db.Courses
join cl in db.Classes on c.CourseId equals cl.CourseId
where c.Subject == subject && c.Number == num && cl.Season == season && cl.Year == year
select cl.ClassId;
if (query.Count() == 0)
{
return(Json(new { success = false }));
}
uint classID = (uint)query.FirstOrDefault();
System.Diagnostics.Debug.WriteLine("hwewew: " + classID);
var currClass = (from e in db.Enrollment
where e.UId == uid
select e.ClassId);
foreach (uint cid in currClass)
{
if (cid == classID)
{
return(Json(new { success = false }));
}
}
Enrollment newE = new Enrollment();
newE.UId = uid;
newE.ClassId = classID;
newE.Grade = "--";
db.Enrollment.Add(newE);
db.SaveChanges();
return(Json(new { success = true }));
}
}
/*******Begin code to modify********/
/// <summary>
/// Create a new user of the LMS with the specified information.
/// Assigns the user a unique uID consisting of a 'u' followed by 7 digits.
/// </summary>
/// <param name="fName">First Name</param>
/// <param name="lName">Last Name</param>
/// <param name="DOB">Date of Birth</param>
/// <param name="SubjectAbbrev">The department the user belongs to (professors and students only)</param>
/// <param name="SubjectAbbrev">The user's role: one of "Administrator", "Professor", "Student"</param>
/// <returns>A unique uID that is not be used by anyone else</returns>
public string CreateNewUser(string fName, string lName, DateTime DOB, string SubjectAbbrev, string role)
{
using (Team36LMSContext db = new Team36LMSContext())
{
var studentIDS = (from s in db.Students
select s.UId);
var professorIDS = (from s in db.Professors
select s.UId);
var adminIDS = (from s in db.Administrators
select s.UId);
List<int> list = new List<int>();
foreach (string sID in studentIDS)
{
Int32.TryParse(sID.Substring(1), out int result);
list.Add(result);
}
foreach (string pID in professorIDS)
{
Int32.TryParse(pID.Substring(1), out int result);
list.Add(result);
}
foreach (string aID in adminIDS)
{
Int32.TryParse(aID.Substring(1), out int result);
list.Add(result);
}
string newID = "u0000001";
if (list.Count() > 0)
{
newID = generateUniqueID(list);
}
if (role == "Student")
{
Students newStudent = new Students();
newStudent.UId = newID;
newStudent.FirstName = fName;
newStudent.LastName = lName;
newStudent.Dob = DOB;
newStudent.Major = SubjectAbbrev;
db.Students.Add(newStudent);
db.SaveChanges();
}
if (role == "Professor")
{
Professors newProfessor = new Professors();
newProfessor.UId = newID;
newProfessor.FirstName = fName;
newProfessor.LastName = lName;
newProfessor.Dob = DOB;
newProfessor.Subject = SubjectAbbrev;
db.Professors.Add(newProfessor);
db.SaveChanges();
}
if (role == "Administrator")
{
Administrators newAdm = new Administrators();
newAdm.UId = newID;
newAdm.FirstName = fName;
newAdm.LastName = lName;
newAdm.Dob = DOB;
db.Administrators.Add(newAdm);
db.SaveChanges();
}
return newID;
}
}
/// <summary>
/// Creates a class offering of a given course.
/// </summary>
/// <param name="subject">The department subject abbreviation</param>
/// <param name="number">The course number</param>
/// <param name="season">The season part of the semester</param>
/// <param name="year">The year part of the semester</param>
/// <param name="start">The start time</param>
/// <param name="end">The end time</param>
/// <param name="location">The location</param>
/// <param name="instructor">The uid of the professor</param>
/// <returns>A JSON object containing {success = true/false}.
/// false if another class occupies the same location during any time
/// within the start-end range in the same semester, or if there is already
/// a Class offering of the same Course in the same Semester.</returns>
public IActionResult CreateClass(string subject, int number, string season, int year, DateTime start, DateTime end, string location, string instructor)
{
int newClassID = 1;
using (Team36LMSContext db = new Team36LMSContext())
{
var query1 = (from c in db.Classes
join q in db.Courses on c.CourseId equals q.CourseId
where c.Season == season &&
c.Year == year &&
q.Subject == subject
select c).FirstOrDefault();
if (query1 != null)
{
return(Json(new { success = false }));
}
var query2 = (from c in db.Classes
where c.Season == season &&
c.Year == year &&
c.Location == location &&
((c.Start > start.TimeOfDay && c.Start < end.TimeOfDay) || (c.End > start.TimeOfDay && c.End < end.TimeOfDay) || (c.Start > start.TimeOfDay && c.End < end.TimeOfDay))
select c).FirstOrDefault();
if (query2 != null)
{
return(Json(new { success = false }));
}
var classes = (from c in db.Classes
select c.ClassId);
List <int> list = new List <int>();
foreach (int classID in classes)
{
list.Add(classID);
}
if (list.Count() > 0)
{
newClassID = list.Max() + 1;
}
var courseID = (from c in db.Courses
where c.Subject == subject && c.Number == number
select c.CourseId).FirstOrDefault();
Classes newClass = new Classes();
newClass.Year = (uint)year;
newClass.Season = season;
newClass.Location = location;
newClass.Start = start.TimeOfDay;
newClass.End = end.TimeOfDay;
newClass.CourseId = courseID;
newClass.UId = instructor;
newClass.ClassId = (uint)newClassID;
db.Classes.Add(newClass);
db.SaveChanges();
return(Json(new { success = true }));
}
}