added quiz popup form and displaying on month

Management.Web/Shared/Semester/Day/AssignmentInDay.razor

@@ -0,0 +1,120 @@
+
+@inject DragContainer dragContainer
+@inject CoursePlanner planner
+@inject AssignmentEditorContext assignmentContext
+
+@code {
+  [Parameter]
+  [EditorRequired]
+  public LocalAssignment Assignment { get; set; } = new();
+  protected override void OnInitialized()
+  {
+    planner.StateHasChanged += reload;
+  }
+  private void reload()
+  {
+    this.InvokeAsync(this.StateHasChanged);
+  }
+  public void Dispose()
+  {
+    planner.StateHasChanged -= reload;
+  }
+
+  private void dropOnDate(DateTime dropDate)
+  {
+
+    if (planner.LocalCourse == null) return;
+    var currentModule = planner
+      .LocalCourse
+      .Modules
+      .First(m => 
+        m.Assignments
+          .Select(a => a.Id)
+          .Contains(Assignment.Id)
+      ) ?? throw new Exception("in day callback, could not find module");
+
+    var defaultDueTimeDate = new DateTime(
+      year: dropDate.Year,
+      month: dropDate.Month,
+      day: dropDate.Day,
+      hour: planner.LocalCourse.DefaultDueTime.Hour,
+      minute: planner.LocalCourse.DefaultDueTime.Minute,
+      second: 0
+    );
+
+    var moduleWithUpdatedAssignment = currentModule with 
+    {
+      Assignments = currentModule.Assignments.Select(a => 
+        a.Id != Assignment.Id
+        ? a
+        : a with 
+        {
+          DueAt=defaultDueTimeDate
+        }
+      )
+    };
+    var updatedModules = planner.LocalCourse.Modules
+      .Select(m => 
+        m.Name == moduleWithUpdatedAssignment.Name 
+          ? moduleWithUpdatedAssignment 
+          : m
+      );
+    var newCourse = planner.LocalCourse with 
+    {
+      Modules = updatedModules
+    };
+    planner.LocalCourse = newCourse;
+  }
+  private void dropOnModule(LocalModule module)
+  {
+    if (planner.LocalCourse == null) return;
+    var newModules = planner.LocalCourse.Modules.Select(m => 
+      m.Name != module.Name
+        ? m with 
+        {
+          Assignments = m.Assignments.Where(a => a.Id != Assignment.Id)
+        }
+        : m with 
+        {
+          Assignments = m.Assignments.Append(Assignment)
+        }
+    );
+
+    var newCourse = planner.LocalCourse with 
+    {
+      Modules = newModules
+    };
+    planner.LocalCourse = newCourse;
+  }
+
+  private void DropCallback (DateTime? dropDate, LocalModule? module) 
+  {
+    if (module == null)
+    {
+      dropOnDate(dropDate ?? Assignment.DueAt);
+    } 
+    else
+    {
+      dropOnModule(module);
+    }
+  }
+  private void HandleDragStart()
+  {
+    dragContainer.DropCallback = DropCallback;
+  }
+
+  private void HandleDragEnd()
+  {
+    dragContainer.DropCallback = null;
+  }
+}
+
+<div
+  draggable="true"
+  @ondragstart="HandleDragStart"
+  @ondragend="HandleDragEnd"
+  @onclick="@(() => assignmentContext.Assignment = Assignment)"
+  role="button"
+>
+  @Assignment.Name
+</div>

Management.Web/Shared/Semester/Day/Day.razor

@@ -0,0 +1,127 @@
+@inject DragContainer dragContainer
+@inject CoursePlanner configurationManagement
+
+@inject CoursePlanner planner
+
+@code 
+{
+  [Parameter, EditorRequired]
+  public DateTime? date { get; set; } =
+  default!; 
+  
+  private bool isWeekDay {
+    get => date?.DayOfWeek != null;
+  }
+  private bool dragging {get; set;} = false;
+  protected override void OnInitialized()
+  {
+    planner.StateHasChanged += reload;
+  }
+  private void reload()
+  {
+    this.InvokeAsync(this.StateHasChanged);
+  }
+  public void Dispose()
+  {
+    planner.StateHasChanged -= reload;
+  }
+  
+
+  private IEnumerable<LocalAssignment> TodaysAssignments 
+    {
+    get
+    {
+      if(planner.LocalCourse == null || date == null)
+        return Enumerable.Empty<LocalAssignment>();
+      else
+        return planner.LocalCourse.Modules
+          .SelectMany(m => m.Assignments)
+          .Where(a => a.DueAt.Date == date?.Date);
+    }
+  }
+
+  private IEnumerable<LocalQuiz> todaysQuizzes 
+    {
+      get
+      {
+        if(planner.LocalCourse == null || date == null)
+          return Enumerable.Empty<LocalQuiz>();
+        else
+          return planner.LocalCourse.Modules
+            .SelectMany(m => m.Quizzes)
+            .Where(q => q.DueAt.Date == date?.Date);
+      }
+    }
+  private string calculatedClass
+  {
+    get
+    {
+      var baseClasses = "col border rounded rounded-3 p-2 pb-4 m-1 "; 
+      if(dragging)
+        return baseClasses + " bg-secondary text-light ";
+
+      if (isWeekDay)
+      {
+        DayOfWeek? weekDay = date?.DayOfWeek;
+        DayOfWeek notNullDay = weekDay ?? default;
+        
+        var isClassDay = planner.LocalCourse?.DaysOfWeek.Contains(notNullDay) ?? false;
+        var dayInSemester = 
+          isClassDay
+            && date <= planner.LocalCourse?.EndDate
+            && date >= planner.LocalCourse?.StartDate;
+        
+        var totalClasses = dayInSemester 
+          ? "bg-light-subtle text-light " + baseClasses 
+          : " " + baseClasses;
+
+        return totalClasses;
+      }
+      else
+      {
+        return baseClasses;
+      }
+    }
+  }
+  void OnDragEnter() {
+    dragging = true;
+  }
+  void OnDragLeave() {
+    dragging = false;
+  }
+
+  void OnDrop()
+  {
+    dragging = false;
+    if(dragContainer.DropCallback == null){
+      System.Console.WriteLine("no drop callback set");
+      return;
+    }
+    if(date != null)
+    {
+      DateTime d = date ?? throw new Exception("should not get here, error converting date from nullable");
+      dragContainer.DropCallback?.Invoke(d, null);
+    }
+  }
+} 
+
+<div 
+  class="@calculatedClass"
+  @ondrop="@(() => OnDrop())"
+  @ondragenter="OnDragEnter"
+  @ondragleave="OnDragLeave"
+  ondragover="event.preventDefault();"
+>
+  @(isWeekDay ? date?.Day : "")
+  <div class="m-0 ps-3">
+  @foreach (var assignment in TodaysAssignments)
+  {
+    <AssignmentInDay Assignment="assignment" @key="@assignment" />
+  }
+
+  @foreach(var quiz in todaysQuizzes)
+  {
+    <QuizInDay Quiz="quiz" @key="@quiz" />
+  }
+  </div>
+</div>

Management.Web/Shared/Semester/Day/QuizInDay.razor

@@ -0,0 +1,29 @@
+@using Management.Web.Shared.Components.Quiz
+@inject DragContainer dragContainer
+@inject CoursePlanner planner
+@inject QuizEditorContext quizContext
+
+@inherits DroppableQuiz
+
+@code {
+
+  private void HandleDragStart()
+  {
+    dragContainer.DropCallback = dropCallback;
+  }
+
+  private void HandleDragEnd()
+  {
+    dragContainer.DropCallback = null;
+  }
+}
+
+<div
+  draggable="true"
+  @ondragstart="HandleDragStart"
+  @ondragend="HandleDragEnd"
+  @onclick="@(() => quizContext.Quiz = Quiz)"
+  role="button"
+>
+  @Quiz.Name
+</div>