feat: add per-package RSS feed

Author: WarningImHack3r

package.json

@@ -40,6 +40,7 @@
 		"eslint": "^9.25.1",
 		"eslint-config-prettier": "^10.1.2",
 		"eslint-plugin-svelte": "^3.5.1",
+		"feed": "^4.2.2",
 		"globals": "^16.0.0",
 		"mode-watcher": "^1.0.2",
 		"octokit": "^4.1.3",

pnpm-lock.yaml

@@ -0,0 +1,11 @@
+import { type RequestHandler, text } from "@sveltejs/kit";
+import { rssHandler } from "../rss";
+
+export const GET: RequestHandler = rssHandler(feed =>
+	text(feed.atom1(), {
+		headers: {
+			"Cache-Control": "max-age=0, s-max-age=600",
+			"Content-Type": "application/xml"
+		}
+	})
+);

src/routes/package/[...package]/atom.xml/+server.ts

@@ -0,0 +1,11 @@
+import { type RequestHandler, text } from "@sveltejs/kit";
+import { rssHandler } from "../rss";
+
+export const GET: RequestHandler = rssHandler(feed =>
+	text(feed.json1(), {
+		headers: {
+			"Cache-Control": "max-age=0, s-max-age=600",
+			"Content-Type": "application/json"
+		}
+	})
+);

src/routes/package/[...package]/rss.json/+server.ts

@@ -0,0 +1,67 @@
+import { error, type RequestHandler } from "@sveltejs/kit";
+import { Feed } from "feed";
+import { discoverer } from "$lib/server/package-discoverer";
+import { getPackageReleases } from "../releases";
+
+function getBaseFeed(url: URL, title: string) {
+	const feed = new Feed({
+		copyright: "",
+		description: `The releases feed for ${title}, brought by Svelte Changelog.`,
+		favicon: "https://raw.githubusercontent.com/sveltejs/branding/master/svelte-logo.svg",
+		feedLinks: {
+			xml: url.toString().replace(/[A-z\d]+\.[A-z\d]+$/, "rss.xml"),
+			json: url.toString().replace(/[A-z\d]+\.[A-z\d]+$/, "rss.json"),
+			atom: url.toString().replace(/[A-z\d]+\.[A-z\d]+$/, "atom.xml")
+		},
+		id: url.toString(),
+		language: "en",
+		link: url.toString(),
+		title
+	});
+	feed.addCategory("Technology");
+	feed.addContributor({
+		name: "Antoine Lethimonnier",
+		link: "https://github.com/WarningImHack3r"
+	});
+	return feed;
+}
+
+export function rssHandler(response: (feed: Feed) => Response): RequestHandler {
+	return async ({ params, url, locals }) => {
+		const { package: slugPackage } = params;
+		if (!slugPackage) error(400);
+
+		// 1. Get all the discovered packages
+		const categorizedPackages = await discoverer.getOrDiscoverCategorized();
+
+		// 2. Get the releases and package info
+		const packageReleases = await getPackageReleases(
+			slugPackage,
+			categorizedPackages,
+			locals.posthog
+		);
+		if (!packageReleases) error(404);
+
+		const feed = getBaseFeed(url, `${packageReleases.releasesRepo.pkg.name} releases`);
+		for (const release of packageReleases.releases) {
+			feed.addItem({
+				author: [
+					{
+						name: release.author.name ?? undefined,
+						link: release.author.url,
+						email: release.author.email ?? undefined
+					}
+				],
+				content: release.body ?? undefined,
+				date: new Date(release.published_at ?? release.created_at),
+				description: `${release.cleanName} ${release.cleanVersion} release`,
+				id: release.id.toString(),
+				link: release.html_url,
+				published: release.published_at ? new Date(release.published_at) : undefined,
+				title: `${release.cleanName}@${release.cleanVersion}`
+			});
+		}
+
+		return response(feed);
+	};
+}

src/routes/package/[...package]/rss.ts

@@ -0,0 +1,11 @@
+import { type RequestHandler, text } from "@sveltejs/kit";
+import { rssHandler } from "../rss";
+
+export const GET: RequestHandler = rssHandler(feed =>
+	text(feed.rss2(), {
+		headers: {
+			"Cache-Control": "max-age=0, s-max-age=600",
+			"Content-Type": "application/xml"
+		}
+	})
+);