feat: sitemap (#1043)

src/app/sitemap.ts

@@ -0,0 +1,32 @@
+import {MetadataRoute} from 'next';
+import {routing, getPathname} from '@/i18n/routing';
+
+type Href = Parameters<typeof getPathname>[0]['href'];
+type pathnames = typeof routing.pathnames;
+type AvailableRoutes = keyof pathnames;
+
+// Adapt this as necessary
+const host = 'https://jy95.github.io';
+
+export default function sitemap(): MetadataRoute.Sitemap {
+    const paths = Object.keys(routing.pathnames) as AvailableRoutes[];
+    return paths.map(getEntry);
+}
+
+function getEntry(href: Href): MetadataRoute.Sitemap[number] {
+    return {
+        url: getUrl(href, routing.defaultLocale),
+        lastModified: new Date(),
+        changeFrequency: "daily",
+        alternates: {
+          languages: Object.fromEntries(
+            routing.locales.map((locale) => [locale, getUrl(href, locale)])
+          )
+        }
+    }
+}
+
+function getUrl(href: Href, locale: (typeof routing.locales)[number]) {
+    const pathname = getPathname({locale, href});
+    return host + pathname;
+}

src/i18n/routing.ts

@@ -21,5 +21,4 @@ export const routing = defineRouting({
 
 // Lightweight wrappers around Next.js' navigation APIs
 // that will consider the routing configuration
-export const {Link, redirect, usePathname, useRouter} =
-  createNavigation(routing);
+export const {Link, redirect, usePathname, useRouter, getPathname} = createNavigation(routing);