Refactor code structure for improved readability and maintainability

app/api/mod/chuong/optimize/route.ts

@@ -3,6 +3,7 @@ import { getServerSession } from "next-auth/next"
 import { authOptions } from "@/lib/auth"
 import connectToMongoDB from "@/lib/mongoose"
 import { Chapter } from "@/lib/models/chapter"
+import { prisma } from "@/lib/prisma"
 
 export async function PUT(req: Request) {
     const session = await getServerSession(authOptions)
@@ -18,10 +19,34 @@ export async function PUT(req: Request) {
             return NextResponse.json({ error: "Tham số không hợp lệ" }, { status: 400 })
         }
 
+        const novel = await prisma.novel.findUnique({
+            where: { id: novelId },
+            select: { id: true, uploaderId: true }
+        })
+
+        if (!novel) {
+            return NextResponse.json({ error: "Không tìm thấy truyện" }, { status: 404 })
+        }
+
+        if (session.user.role !== "ADMIN" && novel.uploaderId !== session.user.id) {
+            return NextResponse.json({ error: "Forbidden" }, { status: 403 })
+        }
+
+        const validUpdates = updates.filter((update: any) =>
+            update &&
+            typeof update.id === "string" &&
+            typeof update.number === "number" &&
+            typeof update.title === "string"
+        )
+
+        if (validUpdates.length === 0) {
+            return NextResponse.json({ message: "Không có thay đổi nào" }, { status: 200 })
+        }
+
         await connectToMongoDB()
 
         // Prepare bulk operations for mongoose
-        const bulkOps = updates.map((update: any) => ({
+        const bulkOps = validUpdates.map((update: any) => ({
             updateOne: {
                 filter: { _id: update.id, novelId: novelId },
                 update: {
@@ -41,6 +66,7 @@ export async function PUT(req: Request) {
 
         return NextResponse.json({
             message: "Cập nhật thành công",
+            matchedCount: result.matchedCount,
             modifiedCount: result.modifiedCount
         }, { status: 200 })