Initial backend, widget endpoint, basic parsing and proxy

src/widgets/feed/proxy.js

@@ -0,0 +1,51 @@
+import { parseFeed } from "./utils";
+
+import getServiceWidget from "utils/config/service-helpers";
+import createLogger from "utils/logger";
+import { sanitizeErrorURL } from "utils/proxy/api-helpers";
+import { httpProxy } from "utils/proxy/http";
+
+const logger = createLogger("feedProxyHandler");
+
+export default async function feedProxyHandler(req, res) {
+  const { group, service, index } = req.query;
+  const widget = await getServiceWidget(group, service, index);
+
+  if (!widget?.url) {
+    return res.status(400).json({ error: "Missing feed URL" });
+  }
+
+  let url;
+  try {
+    url = new URL(widget.url);
+  } catch {
+    return res.status(400).json({ error: "Invalid feed URL" });
+  }
+
+  const [status, , data] = await httpProxy(url, {
+    headers: {
+      "User-Agent": `gethomepage/${process.env.NEXT_PUBLIC_VERSION || "dev"}`,
+      Accept: "application/rss+xml, application/atom+xml, application/xml;q=0.9, text/xml;q=0.9, */*;q=0.8",
+    },
+  });
+
+  if (status !== 200) {
+    logger.debug("HTTP %d retrieving feed %s//%s%s", status, url.protocol, url.host, url.pathname);
+    return res.status(status).json({ error: { message: "HTTP Error", url: sanitizeErrorURL(url) } });
+  }
+
+  let items;
+  try {
+    items = parseFeed(Buffer.from(data).toString(), url.href);
+  } catch (e) {
+    logger.debug("Error parsing feed %s//%s%s: %s", url.protocol, url.host, url.pathname, e.message);
+    return res.status(500).json({ error: { message: "Invalid feed", url: sanitizeErrorURL(url) } });
+  }
+
+  const maxItems = parseInt(widget.maxItems, 10) || 5;
+  const showImages = widget.images !== false && widget.images !== "false";
+
+  return res.status(200).json({
+    items: items.slice(0, maxItems).map(({ image, ...item }) => (showImages && image ? { ...item, image } : item)),
+  });
+}