TTikotok V4

greenlns-landing/lib/seoPageFactory.tsx

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+import type { Metadata } from 'next'
+import { notFound } from 'next/navigation'
+import SeoCategoryPage from '@/components/SeoCategoryPage'
+import { getHreflangAlternates } from '@/lib/localeRoutes'
+import { getSeoPageBySlug } from '@/lib/seoPages'
+import { siteConfig } from '@/lib/site'
+
+/**
+ * Template für SEO-Subpages. Neue Seite in 3 Schritten:
+ *
+ * 1. Profil in `lib/seoPages.ts` anlegen (SeoPageProfile) und den Slug
+ *    bei deutschen Seiten in `germanSeoPageSlugs` eintragen — damit landen
+ *    Sitemap-Eintrag und /de/<slug>-Redirect automatisch.
+ *    Englische Seiten zusätzlich in `app/sitemap.ts` ergänzen.
+ * 2. `app/<slug>/page.tsx` anlegen:
+ *
+ *      import { buildSeoPageMetadata, createSeoPage } from '@/lib/seoPageFactory'
+ *
+ *      export const metadata = buildSeoPageMetadata('<slug>')
+ *      export default createSeoPage('<slug>')
+ *
+ * 3. Interne Links setzen: `relatedLinks` thematisch passender Profile
+ *    auf die neue Seite zeigen lassen.
+ */
+export function buildSeoPageMetadata(slug: string): Metadata {
+  const profile = getSeoPageBySlug(slug)
+
+  if (!profile) {
+    return {}
+  }
+
+  const languages = getHreflangAlternates(profile.canonical)
+
+  return {
+    title: profile.metaTitle,
+    description: profile.metaDescription,
+    alternates: { canonical: profile.canonical, ...(languages && { languages }) },
+    openGraph: {
+      title: profile.metaTitle,
+      description: profile.metaDescription,
+      url: `${siteConfig.domain}${profile.canonical}`,
+      type: 'website',
+      images: [{ url: '/og-image.png', width: 1200, height: 630, alt: profile.metaTitle }],
+    },
+    twitter: {
+      card: 'summary_large_image',
+      title: profile.metaTitle,
+      description: profile.metaDescription,
+      images: ['/og-image.png'],
+    },
+  }
+}
+
+export function createSeoPage(slug: string) {
+  const profile = getSeoPageBySlug(slug)
+
+  return function SeoPage() {
+    if (!profile) notFound()
+    return <SeoCategoryPage profile={profile} />
+  }
+}