nobat724_front/app/doctor/[slug]/page.js

import { cache } from "react";
import DoctorPage from "@/components/doctor";
import Layout from "@/components/layout/StLayout";
import { getStateInfo } from "@/lib/getStateInfo";
import { imageUrl } from "@/helper";

const API_URL = process.env.NEXT_PUBLIC_API_URL;
const FALLBACK_IMG = "https://www.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;
  }
});

export async function generateMetadata({ params }) {
  const { slug } = await params;
  const { matchedCity } = await getStateInfo();
  const siteName = matchedCity?.site_name || "نوبت 724";

  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 image = imageUrl(doctor.img) || FALLBACK_IMG;

    return {
      title,
      description,
      openGraph: {
        title,
        description,
        type: "profile",
        images: [image],
      },
      twitter: {
        card: "summary",
        title,
        description,
        images: [image],
      },
    };
  } catch {
    return {};
  }
}

async function Doctor({ params }) {
  const { slug } = await params;
  let comments = null;
  let rateAggregate = { point: 0, satisfaction: 0, averages: [] };

  const doctor = await getDoctor(slug);

  if (doctor) {
    try {
      const [resComments, resRate] = await Promise.all([
        fetch(`${API_URL}/api/v1/comments/${doctor.uuid}`, { cache: "no-store" }),
        fetch(`${API_URL}/api/v1/rate/${doctor.uuid}`, { cache: "no-store" }),
      ]);
      const [jsonComments, jsonRate] = await Promise.all([
        resComments.ok ? resComments.json() : null,
        resRate.ok ? resRate.json() : null,
      ]);
      comments = jsonComments?.data?.data;
      rateAggregate = jsonRate?.data?.data ?? rateAggregate;
    } catch (error) {}
  }

  const specialtyNames = doctor?.specialties?.map((s) => s.name).join(" و ") || "";
  const jsonLd = doctor
    ? {
        "@context": "https://schema.org",
        "@type": "Physician",
        name: `دکتر ${doctor.name}`,
        ...(specialtyNames && { medicalSpecialty: specialtyNames }),
        ...(doctor.img && { image: doctor.img }),
        ...(doctor.address && {
          address: {
            "@type": "PostalAddress",
            streetAddress: doctor.address,
          },
        }),
      }
    : null;

  const breadcrumbJsonLd = doctor
    ? {
        "@context": "https://schema.org",
        "@type": "BreadcrumbList",
        itemListElement: [
          { "@type": "ListItem", position: 1, name: "خانه", item: "https://www.nobat724.com" },
          { "@type": "ListItem", position: 2, name: "پزشکان", item: "https://www.nobat724.com/doctors" },
          { "@type": "ListItem", position: 3, name: `دکتر ${doctor.name}` },
        ],
      }
    : null;

  return (
    <>
      {jsonLd && (
        <script
          type="application/ld+json"
          dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
        />
      )}
      {breadcrumbJsonLd && (
        <script
          type="application/ld+json"
          dangerouslySetInnerHTML={{ __html: JSON.stringify(breadcrumbJsonLd) }}
        />
      )}
      <Layout>
        <DoctorPage
          doctor={doctor}
          comments={comments}
          rateAggregate={rateAggregate}
          slug={slug}
        />
      </Layout>
    </>
  );
}

export default Doctor;