fix: enhance error handling in read progress update by validating request body and returning appropriate error responses

src/app/api/komga/books/[bookId]/read-progress/route.ts

@@ -11,9 +11,40 @@ export async function PATCH(
   { params }: { params: Promise<{ bookId: string }> }
 ) {
   try {
-    const { page, completed } = await request.json();
     const bookId: string = (await params).bookId;
 
+    // Handle empty or invalid body (can happen when request is aborted during navigation)
+    let body: { page?: unknown; completed?: boolean };
+    try {
+      const text = await request.text();
+      if (!text) {
+        return NextResponse.json(
+          {
+            error: {
+              code: ERROR_CODES.BOOK.PROGRESS_UPDATE_ERROR,
+              name: "Progress update error",
+              message: "Empty request body",
+            },
+          },
+          { status: 400 }
+        );
+      }
+      body = JSON.parse(text);
+    } catch {
+      return NextResponse.json(
+        {
+          error: {
+            code: ERROR_CODES.BOOK.PROGRESS_UPDATE_ERROR,
+            name: "Progress update error",
+            message: "Invalid JSON body",
+          },
+        },
+        { status: 400 }
+      );
+    }
+
+    const { page, completed } = body;
+
     if (typeof page !== "number") {
       return NextResponse.json(
         {

tsconfig.json

@@ -23,5 +23,5 @@
     }
   },
   "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
-  "exclude": ["node_modules"]
+  "exclude": ["node_modules", "temp"]
 }