Set up initial project and files

src/routes/rss.ts

@@ -0,0 +1,70 @@
+import { Context } from 'hono';
+import { Env, FeedConfig, FeedMetadata, EmailData } from '../types';
+import { generateRssFeed } from '../utils/feed-generator';
+
+/**
+ * Generates an RSS feed for a specific feed ID
+ */
+export async function handle(c: Context): Promise<Response> {
+  try {
+    // Type assertion for environment variables
+    const env = c.env as unknown as Env;
+    
+    // Extract the feed ID from the route params
+    const feedId = c.req.param('feedId');
+    
+    if (!feedId) {
+      return new Response('Feed ID is required', { status: 400 });
+    }
+    
+    // Get the KV namespace
+    const emailStorage = env.EMAIL_STORAGE;
+    
+    // Check if the feed exists
+    const feedMetadataKey = `feed:${feedId}:metadata`;
+    const feedMetadata = await emailStorage.get(feedMetadataKey, 'json') as FeedMetadata | null;
+    
+    if (!feedMetadata) {
+      return new Response('Feed not found', { status: 404 });
+    }
+    
+    // Get feed configuration (title, description, etc.)
+    const feedConfigKey = `feed:${feedId}:config`;
+    const feedConfig = await emailStorage.get(feedConfigKey, 'json') as FeedConfig | null || {
+      title: `Newsletter Feed ${feedId}`,
+      description: 'Converted email newsletter',
+      site_url: `https://api.${env.DOMAIN}/rss/${feedId}`,
+      feed_url: `https://api.${env.DOMAIN}/rss/${feedId}`,
+      language: 'en',
+      created_at: Date.now()
+    };
+    
+    // Get the emails for this feed (up to the last 20)
+    const emails = feedMetadata.emails.slice(0, 20);
+    const emailsData: EmailData[] = [];
+    
+    // Fetch all email content
+    for (const email of emails) {
+      const emailData = await emailStorage.get(email.key, 'json') as EmailData | null;
+      if (emailData) {
+        emailsData.push(emailData);
+      }
+    }
+    
+    // Generate the RSS feed XML
+    const baseUrl = `https://api.${env.DOMAIN}`;
+    const rssXml = generateRssFeed(feedConfig, emailsData, baseUrl);
+    
+    // Return the RSS feed with appropriate content type
+    return new Response(rssXml, {
+      status: 200,
+      headers: {
+        'Content-Type': 'application/rss+xml',
+        'Cache-Control': 'max-age=1800' // 30 minutes cache
+      }
+    });
+  } catch (error) {
+    console.error('Error generating RSS feed:', error);
+    return new Response('Internal Server Error', { status: 500 });
+  }
+}