feat(@galactiks/astro-integration): add sitemap news support

packages/adapters/astro/package.json

@@ -40,7 +40,8 @@
   ],
   "dependencies": {
     "@galactiks/config": "workspace:^",
-    "@galactiks/explorer": "workspace:^"
+    "@galactiks/explorer": "workspace:^",
+    "date-fns": "2.30.0"
   },
   "peerDependencies": {
     "@astrojs/partytown": "2.0.1",

packages/adapters/astro/src/preset.mts

@@ -3,14 +3,45 @@ import partytown from '@astrojs/partytown';
 import prefetch from '@astrojs/prefetch';
 import react from '@astrojs/react';
 import sitemap from '@astrojs/sitemap';
+import { getConfig, getDefaultLanguage, getLanguages } from '@galactiks/config';
+import { getPageByURL } from '@galactiks/explorer';
 import critters from 'astro-critters';
 import robotsTxt from 'astro-robots-txt';
+import { isValid } from 'date-fns';
+
+const defaultLocale = getDefaultLanguage();
 
 export const integrationsPreset = (): AstroIntegration[] => [
   react(),
   partytown(),
   prefetch(),
-  sitemap(),
+  sitemap({
+    i18n: defaultLocale ? {
+      defaultLocale,
+      locales: Object.fromEntries(getLanguages().map(lang => ([lang, lang])))
+    } : undefined,
+    serialize: async (item) => {
+      const page = await getPageByURL(item.url);
+      if (!page) {
+        return item;
+      }
+
+      return ({
+        url: page.url,
+        lastmod: isValid(page.dateModified) ? page.dateModified.toISOString() : undefined,
+        news: page.type === 'Article' && {
+          publication: {
+            name: getConfig().webManifest.name,
+            language: getDefaultLanguage(),
+          },
+
+          publication_date: isValid(page.datePublished) ? page.datePublished.toISOString() : undefined,
+          title: page.name,
+          keywords: page.keywords?.join(', '),
+        },
+      });
+    }
+  }),
   robotsTxt(),
   critters(),
 ];