/**
 * Individual School Page (SSR)
 * Dynamic route for school details with full SEO optimization
 */

import { fetchSchoolDetails } from '@/lib/api';
import { notFound } from 'next/navigation';
import { SchoolDetailView } from '@/components/SchoolDetailView';
import type { Metadata } from 'next';

interface SchoolPageProps {
  params: Promise<{ urn: string }>;
}

export async function generateMetadata({ params }: SchoolPageProps): Promise<Metadata> {
  const { urn: urnString } = await params;
  const urn = parseInt(urnString);

  if (isNaN(urn) || urn < 100000 || urn > 999999) {
    return {
      title: 'School Not Found',
    };
  }

  try {
    const data = await fetchSchoolDetails(urn);
    const { school_info } = data;

    const title = `${school_info.school_name} | ${school_info.local_authority || 'England'}`;
    const description = `View KS2 performance data, results, and statistics for ${school_info.school_name}${school_info.local_authority ? ` in ${school_info.local_authority}` : ''}. Compare reading, writing, and maths results.`;

    return {
      title,
      description,
      keywords: `${school_info.school_name}, KS2 results, primary school, ${school_info.local_authority}, school performance, SATs results`,
      openGraph: {
        title,
        description,
        type: 'website',
        url: `https://schoolcompare.co.uk/school/${urn}`,
        siteName: 'SchoolCompare',
      },
      twitter: {
        card: 'summary',
        title,
        description,
      },
      alternates: {
        canonical: `https://schoolcompare.co.uk/school/${urn}`,
      },
    };
  } catch {
    return {
      title: 'School Not Found',
    };
  }
}

// Force dynamic rendering
export const dynamic = 'force-dynamic';

export default async function SchoolPage({ params }: SchoolPageProps) {
  const { urn: urnString } = await params;
  const urn = parseInt(urnString);

  // Validate URN format
  if (isNaN(urn) || urn < 100000 || urn > 999999) {
    notFound();
  }

  // Fetch school data
  let data;
  try {
    data = await fetchSchoolDetails(urn);
  } catch (error) {
    console.error(`Failed to fetch school ${urn}:`, error);
    notFound();
  }

  const { school_info, yearly_data, absence_data } = data;

  // Generate JSON-LD structured data for SEO
  const structuredData = {
    '@context': 'https://schema.org',
    '@type': 'EducationalOrganization',
    name: school_info.school_name,
    identifier: school_info.urn.toString(),
    ...(school_info.address && {
      address: {
        '@type': 'PostalAddress',
        streetAddress: school_info.address,
        addressLocality: school_info.local_authority || undefined,
        postalCode: school_info.postcode || undefined,
        addressCountry: 'GB',
      },
    }),
    ...(school_info.latitude && school_info.longitude && {
      geo: {
        '@type': 'GeoCoordinates',
        latitude: school_info.latitude,
        longitude: school_info.longitude,
      },
    }),
    ...(school_info.school_type && {
      additionalType: school_info.school_type,
    }),
  };

  return (
    <>
      <script
        type="application/ld+json"
        dangerouslySetInnerHTML={{ __html: JSON.stringify(structuredData) }}
      />
      <SchoolDetailView
        schoolInfo={school_info}
        yearlyData={yearly_data}
        absenceData={absence_data}
      />
    </>
  );
}