Added sitemap building

docs/scripts/generate-sitemap.js

@@ -0,0 +1,66 @@
+const fs = require('fs');
+const path = require('path');
+const matter = require('gray-matter');
+
+(async () => {
+  const baseUrl = `https://frontmatter.codes`;
+  
+  // Ignore Next.js specific files (e.g., _app.js) and API routes.
+  let pages = fs
+  .readdirSync(path.join(__dirname, '../pages'))
+  .filter((staticPage) => {
+    return ![
+      "_app.tsx",
+      "_document.tsx",
+      "_error.tsx",
+      "sitemap.xml.tsx",
+      "index.tsx",
+      "404",
+      "api"
+    ].includes(staticPage);
+  })
+  .map((staticPagePath) => ({
+    lastModified: new Date().toISOString(),
+    slug: `${baseUrl}/${staticPagePath}`
+  }));
+
+  const mdDir = path.join(process.cwd(), 'content');
+  const mdFiles = fs.readdirSync(path.join(mdDir, 'docs')).filter(f => f.endsWith(`.md`));
+  const mdPages = mdFiles.map((fileName) => {
+    const fullPath = path.join(mdDir, 'docs', `${fileName}`)
+    const fileContents = fs.readFileSync(fullPath, 'utf8');
+    const { data } = matter(fileContents);
+    return {
+      lastModified: data["lastmod"] || new Date().toISOString(),
+      slug: `${baseUrl}/docs/${data['slug'] || fileName.split('.').slice(0, -1).join('.')}`
+    };
+  });
+
+  pages = [...pages, ...mdPages];
+  
+  const sitemap = `
+  <?xml version="1.0" encoding="UTF-8"?>
+  <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+  <loc>${baseUrl}</loc>
+  <lastmod>${new Date().toISOString()}</lastmod>
+  <changefreq>daily</changefreq>
+  <priority>1.0</priority>
+  </url>
+  ${pages
+    .map((page) => {
+      return `
+      <url>
+      <loc>${`${page.slug}`}</loc>
+      <lastmod>${page.lastModified}</lastmod>
+      <changefreq>monthly</changefreq>
+      <priority>1.0</priority>
+      </url>
+      `;
+    })
+    .join('')}
+    </urlset>
+    `;
+    
+    fs.writeFileSync('public/sitemap.xml', sitemap);
+  })();