From 1d27d225813f7b86834358e1190c02319a709881 Mon Sep 17 00:00:00 2001
From: Anthony GAEREMYNCK <1@anthony.sh>
Date: Tue, 11 Aug 2026 12:01:14 +0200
Subject: [PATCH] feat: add sitemap.xml generation and sitemap <link> tag

Add app/sitemap.ts covering the homepage, supported-sites page, and
all 15 per-platform downloader pages across every locale, with
hreflang alternates between locales. Reference it from <head> via
<link rel="sitemap"> in the locale layout.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
---
 src/app/[locale]/layout.tsx |  1 +
 src/app/sitemap.ts          | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 src/app/sitemap.ts
diff --git a/src/app/[locale]/layout.tsx b/src/app/[locale]/layout.tsx
index 2a8d684..f1d3d5a 100644
--- a/src/app/[locale]/layout.tsx
+++ b/src/app/[locale]/layout.tsx
@@ -75,6 +75,7 @@ export default async function LocaleLayout({
   return (
     <html lang={locale} suppressHydrationWarning>
       <head>
+        <link rel="sitemap" type="application/xml" title="Sitemap" href="/sitemap.xml" />
         <script
           type="application/ld+json"
           dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
diff --git a/src/app/sitemap.ts b/src/app/sitemap.ts
new file mode 100644
index 0000000..758d189
--- /dev/null
+++ b/src/app/sitemap.ts
@@ -0,0 +1,33 @@
+import type { MetadataRoute } from 'next'
+import { routing } from '@/i18n/routing'
+import { DOWNLOADER_PLATFORMS } from '@/lib/downloader-platforms'
+
+const STATIC_PATHS = ['', 'supported-sites']
+
+function urlFor(baseUrl: string, locale: string, path: string) {
+  return `${baseUrl}/${locale}${path ? `/${path}` : ''}`
+}
+
+export default function sitemap(): MetadataRoute.Sitemap {
+  const baseUrl = process.env.NEXT_PUBLIC_BASE_URL ?? ''
+  const paths = [...STATIC_PATHS, ...DOWNLOADER_PLATFORMS.map((platform) => platform.slug)]
+
+  const entries: MetadataRoute.Sitemap = []
+
+  for (const path of paths) {
+    const languages = Object.fromEntries(
+      routing.locales.map((locale) => [locale, urlFor(baseUrl, locale, path)])
+    )
+
+    for (const locale of routing.locales) {
+      entries.push({
+        url: languages[locale],
+        alternates: { languages },
+        changeFrequency: path === '' ? 'weekly' : 'monthly',
+        priority: path === '' ? 1 : path === 'supported-sites' ? 0.5 : 0.8,
+      })
+    }
+  }
+
+  return entries
+}
