Add the post service to the middleware definition of the feed app, plan out how to get the feed. Cache the results.

src/handlers/feed.ts

@@ -1,15 +1,19 @@
 import { Hono, Context } from 'hono';
+import { PostService } from '@blog/services/post-file';
 import { Feed } from 'feed';
 
-const feed = new Hono();
+const feed = new Hono<{ Variables: { postService: PostService }}>();
 let feedBuffer: string = "";
 
 export async function getFeedFile(c: Context) {
   c.header('Content-Type', 'text/xml');
 
   if (!feedBuffer) {
-    // get the post meta
+    const postService: PostService = c.get('postService');
+    const posts = postService.getPublishedPosts();
+
     // get the site meta
+
     // create the feed
     // get the feed data
     feedBuffer = "";