website: add rss feed for microlog

website/src/pages/microlog/rss.xml.ts

@@ -0,0 +1,29 @@
+import path from "node:path";
+import rss from "@astrojs/rss";
+import type { APIContext } from "astro";
+import { getCollection } from "astro:content";
+import { renderGemtextToHtml } from "../../renderGemtextToHtml";
+
+export async function GET(context: APIContext) {
+  // `site` is guaranteed to exist because we define it in our Astro config
+  const site = context.site!;
+  const posts = await getCollection("microlog");
+
+  return rss({
+    title: "Joe Carstairs’ microlog",
+    description: "My private X feed I guess?",
+    customData: `
+			<image>/images/headshot.webp</image>
+		  <language>en-GB</language>
+		`,
+    site: path.join(site.toString(), "microlog"),
+    trailingSlash: false,
+    items: posts.map((post) => ({
+      link: `/microlog/${post.id}`,
+      title: post.id,
+      content: renderGemtextToHtml(post.body ?? ""),
+      pubDate: new Date(post.id.replace(/\.[0-9]+$/g, "")),
+      author: "Joe Carstairs",
+    })),
+  });
+}