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path: root/src/routes/feeds/activity-notifications/+server.ts
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import {
	notifications,
	type Notification,
} from "$lib/Data/AniList/notifications";
import root from "$lib/Utility/root";

const htmlEncode = (input: string) => {
	return input.replace(
		/[\u00A0-\u9999<>&]/g,
		(i) => "&#" + i.charCodeAt(0) + ";",
	);
};

const render = (
	posts: Notification[] = [],
) => `<?xml version="1.0" encoding="UTF-8" ?>
<rss
	version="2.0"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:snf="http://www.smartnews.be/snf"
	xmlns:media="http://search.yahoo.com/mrss/">
  <channel>
    <atom:link href="https://due.moe/feeds/activity-notifications" rel="self" type="application/rss+xml" />
    <title>AniList Notifications • due.moe</title>
    <link>https://due.moe</link>
    <description>Instantly view your AniList notifications via RSS!</description>
    <pubDate>${new Date().toUTCString()}</pubDate>
    <lastBuildDate>${new Date().toUTCString()}</lastBuildDate>
    <language>en-US</language>
		<snf:logo><url>https://due.moe/favicon-196x196.png</url></snf:logo>
    ${posts
			.filter((notification: Notification) => notification.type !== undefined)
			.map((notification: Notification) => {
				let title = `${notification.user.name}${notification.context}`;
				let link = `https://anilist.co/user/${notification.user.name}`;
				const prettyType = notification.type
					.toString()
					.replace(/_/g, " ")
					.toLowerCase()
					.replace(/\w\S*/g, (text) => {
						return text.charAt(0).toUpperCase() + text.substr(1).toLowerCase();
					});

				try {
					if (
						!["FOLLOWING", "ACTIVITY_MESSAGE"].includes(
							notification.type.toString(),
						) &&
						!notification.type.toString().includes("THREAD")
					) {
						link = `https://anilist.co/activity/${notification.activity.id}`;
					} else if (notification.type.toString().includes("THREAD")) {
						title += `${notification.thread.title}`;
						link = `https://anilist.co/forum/thread/${notification.thread.id}`;
					}
				} catch {
					return "";
				}

				return `<item>
<guid isPermaLink="false">${notification.id}</guid>
<title>${htmlEncode(title)}</title>
<link>${link}</link>
<author>${notification.user.name}</author>
<media:thumbnail url="${notification.user.avatar.large}" />
<category>${prettyType}</category>
<pubDate>${new Date(notification.createdAt * 1000).toUTCString()}</pubDate>
</item>`;
			})
			.join("")}
  </channel>
</rss>
`;

export const GET = async ({ url }) => {
	let token = url.searchParams.get("token");
	const refresh = url.searchParams.get("refresh");
	let notification = await notifications(token || "");

	if (notification === null) {
		token = (
			await (await fetch(root(`/api/oauth/refresh?token=${refresh}`))).json()
		)["access_token"];

		notification = await notifications(token as string);
	}

	return new Response(token ? render(notification || []) : render(), {
		headers: {
			"Cache-Control": `max-age=0`,
			"Content-Type": "application/xml",
		},
	});
};