got debounced saving working. some of the assignment saving logic is real time

Management/Features/Configuration/AssignmentEditorContext.cs

@@ -0,0 +1,52 @@
+using LocalModels;
+using Management.Planner;
+
+public class AssignmentEditorContext
+{
+  public event Action? StateHasChanged;
+  private CoursePlanner planner { get; }
+
+  public AssignmentEditorContext(CoursePlanner planner)
+  {
+    this.planner = planner;
+  }
+
+  private LocalAssignment? _assignment;
+  public LocalAssignment? Assignment
+  {
+    get { return _assignment; }
+    set
+    {
+      _assignment = value;
+      StateHasChanged?.Invoke();
+    }
+  }
+
+  public void SaveAssignment(LocalAssignment newAssignment)
+  {
+    if (planner.LocalCourse != null)
+    {
+      Console.WriteLine(newAssignment.Description);
+      var currentModule =
+        planner.LocalCourse.Modules.First(
+          m => m.Assignments.Select(a => a.Id).Contains(newAssignment.Id)
+        ) ?? throw new Exception("could not find current module in assignment description form");
+
+      var updatedModules = planner.LocalCourse.Modules
+        .Select(
+          m =>
+            m.Name == currentModule.Name
+              ? currentModule with
+              {
+                Assignments = currentModule.Assignments
+                  .Select(a => a.Id == newAssignment.Id ? newAssignment : a)
+                  .ToArray()
+              }
+              : m
+        )
+        .ToArray();
+
+      planner.LocalCourse = planner.LocalCourse with { Modules = updatedModules };
+    }
+  }
+}