add covers to custom feeds as well as implement uniqueIds

src/pages/rss/[feedId].xml.ts

@@ -0,0 +1,46 @@
+import rss from "@astrojs/rss";
+import { getChaptersForSlugs, isValidLanguage } from "../../lib/api";
+import type { APIRoute } from "astro";
+import { feedMappings } from "../api/create-feed";
+
+export const GET: APIRoute = async ({ params }) => {
+  const feedId = params.feedId?.replace('.xml', '');
+  
+  if (!feedId || !feedMappings.has(feedId)) {
+    return new Response("Feed not found", { status: 404 });
+  }
+
+  const { slugs, lang } = feedMappings.get(feedId)!;
+
+  if (!isValidLanguage(lang)) {
+    return new Response("Invalid language", { status: 400 });
+  }
+
+  const chapters = await getChaptersForSlugs(slugs, lang);
+
+  if (chapters.length === 0) {
+    return new Response("No chapters found for the provided comics", { status: 404 });
+  }
+
+  return rss({
+    title: `ComicK - Custom Feed (${lang.toUpperCase()})`,
+    description: `Custom RSS feed for selected comics: ${slugs.join(', ')}`,
+    site: "https://github.com/ld3z/manga-rss",
+    items: chapters.map((chapter) => ({
+      title: `${chapter.md_comics.title} - Chapter ${chapter.chap}`,
+      link: `https://comick.io/comic/${chapter.md_comics.slug}`,
+      pubDate: new Date(chapter.updated_at),
+      description: `
+        <div>
+          ${
+            chapter.md_comics.md_covers?.[0]
+              ? `<img src="https://meo.comick.pictures/${chapter.md_comics.md_covers[0].b2key}" 
+                  alt="Cover" style="max-width: 300px; margin-bottom: 1rem;" />`
+              : ""
+          }
+          <p>New chapter available: Chapter ${chapter.chap}</p>
+        </div>
+      `,
+    })),
+  });
+};