/// <summary>
/// Returns all the ScoreUnits associated with the given WorkItem
/// </summary>
/// <param name="workItem">WorkItem for which to return ScoreUnits</param>
/// <returns>Creates new ScoreUnits for all students who have none</returns>
public async Task<IEnumerable<ScoreUnit>> GetScoreUnits(WorkItem workItem)
{
ClassManager classManager = new ClassManager(_db, _userManager);
var students = await classManager.GetAcceptedStudents(workItem.Class);
var newScoreUnits = new List<ScoreUnit>();
var scoreUnits = await _db.ScoreUnits
.Include(su => su.Student)
.Where(su => su.WorkItem.Id == workItem.Id).ToDictionaryAsync(su => su.Student.Id);
// Create new ScoreUnits for those who don't have one
foreach(var student in students)
{
if(!scoreUnits.ContainsKey(student.Id))
{
var newScoreUnit = new ScoreUnit();
newScoreUnit.WorkItem = workItem;
newScoreUnit.Student = student;
newScoreUnit.Grade = null;
newScoreUnits.Add(newScoreUnit);
}
}
var addedScoreUnits = _db.ScoreUnits.AddRange(newScoreUnits);
await _db.SaveChangesAsync();
// Convert dictionary to list and add new ScoreUnits
var result = scoreUnits.Select(kvp => kvp.Value).ToList();
result.AddRange(addedScoreUnits);
return result;
}
/// <summary>
/// Creates a model from the given ScoreUnit
/// </summary>
/// <param name="scoreUnit">ScoreUnit to create the model from</param>
public ScoreUnitBindingModel(ScoreUnit scoreUnit)
{
Id = scoreUnit.Id;
StudentUserName = scoreUnit.Student.UserName;
WorkItemId = scoreUnit.WorkItem.Id;
Grade = scoreUnit.Grade;
}
