feat: improve error handling in API calls for blog, clinic, and doctor data retrieval

app/doctor/[slug]/page.js

@@ -11,16 +11,13 @@ const API_URL = process.env.NEXT_PUBLIC_API_URL;
 const FALLBACK_IMG = "https://nobat724.com/assets/images/logo.png";
 
 const getDoctor = cache(async (slug) => {
-  try {
-    const res = await fetch(`${API_URL}/api/v1/doctor/${slug}`, {
-      next: { revalidate: 3600, tags: [`doctor-${slug}`] },
-    });
-    if (!res.ok) return null;
-    const json = await res.json();
-    return json?.data?.data ?? null;
-  } catch {
-    return null;
-  }
+  const res = await fetch(`${API_URL}/api/v1/doctor/${slug}`, {
+    next: { revalidate: 3600, tags: [`doctor-${slug}`] },
+  });
+  if (res.status === 404 || res.status === 400) return null;
+  if (!res.ok) throw new Error(`Failed to fetch doctor: ${res.status}`);
+  const json = await res.json();
+  return json?.data?.data ?? null;
 });
 
 const getDoctorAddresses = cache(async (doctorId) => {
@@ -41,15 +38,21 @@ export async function generateMetadata({ params }) {
   const { matchedCity } = await getStateInfo();
   const siteName = matchedCity?.site_name || "نوبت 724";
 
+  const doctor = await getDoctor(slug);
+  if (!doctor) notFound();
+
   try {
-    const doctor = await getDoctor(slug);
-    if (!doctor) return {};
 
     const specialtyNames = doctor.specialties?.map((s) => s.name).join(" و ") || "";
     const title = `دکتر ${doctor.name}${specialtyNames ? " | " + specialtyNames : ""} | ${siteName}`;
-    const description =
-      doctor.detail ||
-      `رزرو نوبت آنلاین دکتر ${doctor.name}${specialtyNames ? " متخصص " + specialtyNames : ""}${doctor.address ? " | " + doctor.address : ""}`.trim();
+    const detailText = (doctor.detail || "")
+      .replace(/<[^>]*>/g, "")
+      .replace(/\s+/g, " ")
+      .trim();
+    const description = (
+      detailText ||
+      `رزرو نوبت آنلاین دکتر ${doctor.name}${specialtyNames ? " متخصص " + specialtyNames : ""}${doctor.address ? " | " + doctor.address : ""}`.trim()
+    ).slice(0, 160);
     const image = imageUrl(doctor.img?.[0]?.url) || FALLBACK_IMG;
 
     return {