GRA-164: updates sitemap build step

docs/.vuepress/config.js

@@ -148,5 +148,6 @@ module.exports = {
   plugins: [
     ['@vuepress/google-analytics', { ga: 'UA-74284223-1' }],
     ['sitemap', { hostname: 'https://grapesjs.com' }],
+    ['./plugins/sitemap-index'],
   ],
 };

docs/.vuepress/plugins/sitemap-index.js

@@ -0,0 +1,31 @@
+const fs = require('fs');
+const path = require('path');
+
+module.exports = (options, context) => {
+  return {
+    generated() {
+      const sitemapIndexPath = path.resolve(context.outDir || options.dest, 'sitemap-index.xml');
+      const sitemaps = [
+        'https://grapesjs.com/sitemap.xml',
+        'https://grapesjs.com/docs/sitemap.xml',
+        'https://app.grapesjs.com/sitemap.xml',
+      ];
+
+      const now = new Date().toISOString();
+      const sitemapIndexXml = `<?xml version="1.0" encoding="UTF-8"?>
+<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+${sitemaps
+  .map(
+    (sitemap) => `  <sitemap>
+    <loc>${sitemap}</loc>
+    <lastmod>${now}</lastmod>
+  </sitemap>`,
+  )
+  .join('\n')}
+</sitemapindex>`;
+
+      fs.writeFileSync(sitemapIndexPath, sitemapIndexXml);
+      console.log(`\n✅ Sitemap index generated at ${sitemapIndexPath}`);
+    },
+  };
+};

docs/.vuepress/public/robots.txt

@@ -0,0 +1,5 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://grapesjs.com/docs/sitemap-index.xml
+