canvasManagement/Management.Web/Shared/Components/Quiz/QuizSettings.razor

@using Management.Web.Shared.Components
@using Management.Web.Shared.Components.Forms

@inject QuizEditorContext quizContext
@inject CoursePlanner planner

@code {
  protected override void OnInitialized()
  {
    quizContext.StateHasChanged += reload;
  }
  private void reload()
  {
    if (quizContext.Quiz != null)
    {
      if (!lockAtDueDate)
        lockAtDueDate = quizContext.Quiz.LockAtDueDate;
      if (lockAt == null)
        lockAt = quizContext.Quiz.LockAt;
      if (!shuffleAnswers)
        shuffleAnswers = quizContext.Quiz.ShuffleAnswers;
      if (!oneQuestionAtATime)
        oneQuestionAtATime = quizContext.Quiz.OneQuestionAtATime;
      if (allowedAttempts == 0)
        allowedAttempts = quizContext.Quiz.AllowedAttempts;

      this.InvokeAsync(this.StateHasChanged);
    }
  }
  public void Dispose()
  {
    quizContext.StateHasChanged -= reload;
  }

  private bool lockAtDueDate { get; set; }
  private DateTime? lockAt { get; set; }
  private bool shuffleAnswers { get; set; }
  private bool oneQuestionAtATime { get; set; }
  private int allowedAttempts { get; set; }

  private void handleLockAtDueDateChange()
  {
    if(quizContext.Quiz == null)
      return;

    var newValue = !quizContext.Quiz.LockAtDueDate;

    var newQuiz = newValue
      ? quizContext.Quiz with
        {
          LockAtDueDate = newValue,
          LockAt = quizContext.Quiz.DueAt
        }
      : quizContext.Quiz with
        {
          LockAtDueDate = newValue
        };
    quizContext.SaveQuiz(newQuiz);
  }

  private void setAssignmentGroup(LocalAssignmentGroup group)
  {
    if(quizContext.Quiz == null)
      return;
    
    var newQuiz = quizContext.Quiz with 
    {
      LocalAssignmentGroupId = group.Id
    };

    quizContext.SaveQuiz(newQuiz);
  }

  private LocalAssignmentGroup? selectedAssignmentGroup =>
    planner
      .LocalCourse?
      .AssignmentGroups
      .FirstOrDefault(g => g.Id == quizContext.Quiz?.LocalAssignmentGroupId);
}
@if(planner.LocalCourse != null )
{
  <div>
    <div class="form-check form-switch">
      <input 
        class="form-check-input" 
        type="checkbox"
        role="switch" 
        id="lockAtDueDate"
        checked="@lockAtDueDate"
        @onchange="handleLockAtDueDateChange">
      <label 
        class="form-check-label" for="lockAtDueDate">
        Lock at Due Date
      </label>
    </div>
    <ButtonSelect
      Label="Assignment Group"
      Options="planner.LocalCourse.AssignmentGroups"
      GetId="(g) => g.Id"
      GetName="(g) => g.Name"
      OnSelect="(g) => setAssignmentGroup(g)"
      SelectedOption="selectedAssignmentGroup"
    />
  </div>
}