feat: generate rss feed

package.json

@@ -50,6 +50,7 @@
     "angular-twitter-timeline": "^15.0.0",
     "animate.css": "^4.1.1",
     "clipboard": "^2.0.11",
+    "feed": "^4.2.2",
     "front-matter": "^4.0.2",
     "marked": "^11.1.1",
     "marked-gfm-heading-id": "^3.1.0",

src/server/routes/rss.xml.ts

@@ -0,0 +1,90 @@
+import { Feed } from 'feed';
+import * as fs from 'fs';
+import { defineEventHandler } from 'h3';
+import { marked } from 'marked';
+import * as path from 'path';
+import fm from 'front-matter';
+import { PostAttributes } from 'src/app/types';
+import { createHash } from 'crypto';
+
+function generateReproducibleHash(input: string): string {
+  const hash = createHash('md5'); // You can use other algorithms like 'sha256', 'sha1', etc.
+
+  // Update the hash with the input data
+  hash.update(input);
+
+  // Generate a hexadecimal digest
+  const digest = hash.digest('hex');
+
+  // Format the digest as a GUID
+  const formattedGuid = `${digest.substring(0, 8)}-${digest.substring(
+    8,
+    12,
+  )}-${digest.substring(12, 16)}-${digest.substring(16, 20)}-${digest.substring(
+    20,
+  )}`;
+
+  return formattedGuid;
+}
+
+export default defineEventHandler((event) => {
+  const baseDir = './src/content/blog';
+  const baseUrl = 'https://k9n.dev';
+  function generateRssFeed(): string {
+    const mainFeed = new Feed({
+      title: 'k9n.dev Blog',
+      id: `${baseUrl}`, // replace with your site URL
+      link: `${baseUrl}/api/rss.xml`, // replace with your feed URL
+      language: 'de',
+      copyright: '2024 by Danny Koppenhagen',
+    });
+
+    const files = fs.readdirSync(baseDir);
+    files.forEach((file) => {
+      const filePath = path.join(baseDir, file);
+      const fileContent = fs.readFileSync(filePath, 'utf-8');
+      const frontmatter = fm<PostAttributes>(fileContent);
+
+      const content = marked(frontmatter.body) as string;
+
+      const headerImage = frontmatter.attributes.thumbnail?.header;
+      const cardImage = frontmatter.attributes.thumbnail?.header;
+      let image =
+        typeof headerImage === 'string'
+          ? headerImage
+          : typeof cardImage === 'string'
+            ? cardImage
+            : undefined;
+      image =
+        image && /^https?:\/\//i.test(image) ? image : `${baseUrl}/${image}`;
+      // Add item to the main feed
+      mainFeed.addItem({
+        title: frontmatter.attributes.title,
+        id: generateReproducibleHash(file), // replace with your item URL
+        link: `${baseUrl}/blog/${file.replace(/\.md$/, '')}`, // replace with your item URL
+        description: frontmatter.attributes.description,
+        date: new Date(
+          frontmatter.attributes.updated || frontmatter.attributes.created,
+        ),
+        image,
+        content: content,
+        author: [
+          {
+            name: frontmatter.attributes.author.name,
+            email: frontmatter.attributes.author.mail,
+            link: baseUrl,
+          },
+        ],
+        published: new Date(frontmatter.attributes.created),
+      });
+    });
+
+    return mainFeed.rss2();
+  }
+
+  // Output the combined RSS feed as a string
+  const rssFeedString = generateRssFeed();
+
+  event.node.res.setHeader('content-type', 'text/xml');
+  event.node.res.end(rssFeedString);
+});

vite.config.mts

@@ -20,6 +20,7 @@ export default defineConfig(({ mode }) => ({
     analog({
       prerender: {
         routes: async () => [
+          '/api/rss.xml',
           '/',
           '/blog',
           '/contact',