finished CRUD on pages

Management.Web/Pages/CoursePageForm/CoursePageForm.razor

@@ -55,6 +55,39 @@
   private async Task HandleDelete()
   {
 
+    if (planner.LocalCourse != null && pageContext.Page != null)
+    {
+      var page = pageContext.Page;
+
+      var currentModule = planner
+        .LocalCourse
+        .Modules
+        .First(m =>
+          m.Pages.Contains(page)
+        ) ?? throw new Exception("handling page delete, could not find module");
+
+      var newModules = planner.LocalCourse.Modules.Select(m =>
+          m.Name == currentModule.Name
+            ? m with
+              {
+                Pages = m.Pages.Where(p => p != page).ToArray()
+              }
+            : m
+        )
+        .ToArray();
+
+      planner.LocalCourse = planner.LocalCourse with
+      {
+        Modules = newModules
+      };
+
+      if (pageInCanvas != null && planner.LocalCourse.Settings.CanvasId != null)
+      {
+        ulong courseId = planner.LocalCourse.Settings.CanvasId ?? throw new Exception("cannot delete if no course id");
+        await canvas.Pages.Delete(courseId, pageInCanvas.PageId);
+      }
+      Navigation.NavigateTo("/course/" + planner.LocalCourse?.Settings.Name);
+    }
   }
 
   private void handleNameChange(ChangeEventArgs e)
@@ -94,11 +127,10 @@
       return;
 
     deletingPageFromCanvas = true;
-    @* await canvas.Pages.Delete(
+    await canvas.Pages.Delete(
       (ulong)planner.LocalCourse.Settings.CanvasId,
-      pageInCanvas.Id,
-      assignmentContext.Assignment.Name
-    ); *@
+      pageInCanvas.PageId
+    );
     await planner.LoadCanvasData();
     deletingPageFromCanvas = false;
     StateHasChanged();