add language alts to sitemap

Author: mitchuman

src/app/sitemap.ts

@@ -1,5 +1,6 @@
 import { fetchSanityLive } from '@/sanity/lib/fetch'
 import { groq } from 'next-sanity'
+import { DEFAULT_LANG } from '@/lib/i18n'
 import type { MetadataRoute } from 'next'
 
 export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
@@ -10,21 +11,34 @@ export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
 				!(metadata.slug.current in ['404']) &&
 				metadata.noIndex != true
 			]|order(metadata.slug.current){
-				'url': $baseUrl + select(metadata.slug.current == 'index' => '', metadata.slug.current),
+				'url': (
+					$baseUrl
+					+ select(defined(language) && language != $defaultLang => language + '/', '')
+					+ select(
+						metadata.slug.current == 'index' => '',
+						metadata.slug.current
+					)
+				),
 				'lastModified': _updatedAt,
 				'priority': select(
 					metadata.slug.current == 'index' => 1,
 					0.5
 				),
 			},
 			'blog': *[_type == 'blog.post' && metadata.noIndex != true]|order(name){
-				'url': $baseUrl + 'blog/' + metadata.slug.current,
+				'url': (
+					$baseUrl
+					+ select(defined(language) && language != $defaultLang => language + '/', '')
+					+ 'blog/'
+					+ metadata.slug.current
+				),
 				'lastModified': _updatedAt,
 				'priority': 0.4
 			}
 		}`,
 		params: {
 			baseUrl: process.env.NEXT_PUBLIC_BASE_URL + '/',
+			defaultLang: DEFAULT_LANG,
 		},
 	})