59 lines
1.4 KiB
TypeScript
Executable file
59 lines
1.4 KiB
TypeScript
Executable file
/*
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* Fetches and parses RSS feeds.
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*
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* This handles the fetching, XML parsing and formatting of
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* RSS feed data so that the frontent clients do not have to.
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*
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* This is operating on a "by-feed" basis such that each
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* run only processes one feed, and the clients are expected
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* to make multiple requests if they have a list of feeds to
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* follow.
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*/
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import { parseFeed } from "htmlparser2";
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const defaultHeaders = {
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"Access-Control-Allow-Origin": "https://rss-reader.karnov.club",
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};
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function processFeedXML(feed) {
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return {
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title: feed.title,
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lastPull: String(Date.now()),
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items: feed.items.reduce((items, feedItem) => {
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items.push({
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title: feedItem.title,
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url: feedItem.link,
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published: new Date(feedItem.pubDate),
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});
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return items;
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}, []),
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};
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}
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async function fetchHandler(request: Request) {
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const requestUrl = new URL(request.url);
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const proxiedUrl = requestUrl.searchParams.get("url");
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try {
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const responseData = await fetch(proxiedUrl);
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const data = await responseData.text();
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const newFeedData = parseFeed(data);
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const newFeed = processFeedXML(newFeedData);
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const mergedFeeds = newFeed;
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return new Response(JSON.stringify(mergedFeeds), {
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status: 200,
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headers: defaultHeaders,
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});
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} catch (error) {
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return new Response(error.toString(), {
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status: 500,
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headers: defaultHeaders,
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});
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}
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}
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export default {
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fetch: fetchHandler,
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};
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