add sitemap

src/pages/sitemap.xml.ts

@@ -0,0 +1,38 @@
+import type { APIRoute } from 'astro'
+
+const SITE = 'https://shrjamal.github.io/2048-3x3'
+export const GET: APIRoute = async () => {
+  return new Response(
+    `<?xml version="1.0" encoding="UTF-8"?>
+    <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+      ${['/'].map((path) => getXMLEntry({ path, lastmod: '10 March 2024' })).join('')}
+    </urlset>
+	`,
+    {
+      headers: {
+        'content-type': 'application/xml',
+      },
+    },
+  )
+}
+
+function getXMLEntry({
+  path,
+  changeFreq = 'monthly',
+  priority = '0.5',
+  lastmod,
+}: {
+  path: string
+  changeFreq?: string
+  priority?: string
+  lastmod?: string
+}) {
+  return `
+  <url>
+    <loc>${SITE}${path}</loc>
+    ${lastmod ? `<lastmod>${new Date(lastmod).toISOString()}</lastmod>` : ''}
+    ${changeFreq ? `<changefreq>${changeFreq}</changefreq>` : ''}
+    ${priority ? `<priority>${priority}</priority>` : ''}
+  </url>
+`
+}