import { getCollection } from "astro:content";
import rss from "@astrojs/rss";
import type { APIContext } from "astro";
import { siteConfig } from "@/site.config";

export const GET = async (context: APIContext) => {
	// Get only Pleroma posts tagged with "micro"
	const allMicro = await getCollection("micro", ({ data }) => data.tags?.includes("micro")).catch(
		() => [],
	); // Fallback to empty array if micro collection fails

	// Sort all micro posts
	const allMicroPosts = allMicro.sort(
		(a, b) => b.data.publishDate.getTime() - a.data.publishDate.getTime(),
	);

	// Generate RSS items with full content and images
	const items = allMicroPosts.map((post) => {
		// Get the pre-rendered HTML from the post
		let fullContent = post.rendered?.html || post.body || "";

		// Append images if available
		if (post.data.attachments && post.data.attachments.length > 0) {
			const imagesHtml = post.data.attachments
				.map(
					(att) =>
						`<p><img src="${att.url}" alt="${att.alt || "Image"}" style="max-width: 100%; height: auto;" /></p>`,
				)
				.join("");
			fullContent += imagesHtml;
		}

		// Build author customData for RSS
		let authorCustomData = "";
		if (post.data.author) {
			const authorName = post.data.author.displayName || post.data.author.username;
			authorCustomData = `<author>${authorName}</author><dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">${authorName}</dc:creator>`;
		}

		return {
			title: post.data.title,
			pubDate: post.data.publishDate,
			link: `micro/${post.id}/`,
			description: post.data.description,
			content: fullContent,
			customData: authorCustomData,
		};
	});

	const site = context.site || import.meta.env.SITE;

	return rss({
		title: siteConfig.title,
		description: siteConfig.description,
		site,
		items,
		customData: `<atom:link href="${site}micro/rss.xml" rel="self" type="application/rss+xml" xmlns:atom="http://www.w3.org/2005/Atom" />`,
	});
};