feat(classes): optimize teacher dashboard ui and implement grade management

src/modules/textbooks/actions.ts

@@ -9,10 +9,28 @@ import {
     createKnowledgePoint,
     deleteKnowledgePoint,
     updateTextbook,
-    deleteTextbook
+    deleteTextbook,
+    reorderChapters
 } from "./data-access";
 import { CreateTextbookInput, UpdateTextbookInput } from "./types";
 
+// ... existing code ...
+
+export async function reorderChaptersAction(
+    chapterId: string,
+    newIndex: number,
+    parentId: string | null,
+    textbookId: string
+): Promise<ActionState> {
+    try {
+        await reorderChapters(chapterId, newIndex, parentId);
+        revalidatePath(`/teacher/textbooks/${textbookId}`);
+        return { success: true, message: "Chapters reordered successfully" };
+    } catch {
+        return { success: false, message: "Failed to reorder chapters" };
+    }
+}
+
 export type ActionState = {
   success: boolean;
   message?: string;