added widget for xteve (#731)

* added xteve widget

* eslint fixes

* xteve code cleanup

Co-authored-by: Marcus Kimpenhaus <k@AirM2.kimpenhaus.net>
Co-authored-by: Michael Shamoon <4887959+shamoon@users.noreply.github.com>

src/widgets/xteve/proxy.js

@@ -0,0 +1,62 @@
+import { formatApiCall } from "utils/proxy/api-helpers";
+import { httpProxy } from "utils/proxy/http";
+import createLogger from "utils/logger";
+import widgets from "widgets/widgets";
+import getServiceWidget from "utils/config/service-helpers";
+
+const logger = createLogger("xteveProxyHandler");
+
+export default async function xteveProxyHandler(req, res) {
+  const { group, service, endpoint } = req.query;
+
+  if (!group || !service) {
+    return res.status(400).json({ error: "Invalid proxy service type" });
+  }
+
+  const widget = await getServiceWidget(group, service);
+  const api = widgets?.[widget.type]?.api;
+  if (!api) {
+    return res.status(403).json({ error: "Service does not support API calls" });
+  }
+
+  const url = formatApiCall(api, { endpoint, ...widget });
+  const method = "POST";
+  const payload = { cmd: "status" };
+
+  if (widget.username && widget.password) {
+     const [status, contentType, data] = await httpProxy(url, {
+      method,
+      body: JSON.stringify({
+        cmd: "login",
+        username: widget.username,
+        password: widget.password,
+      })
+    });
+
+    if (status !== 200) {
+      return [status, contentType, data];
+    }
+
+    const json = JSON.parse(data.toString());
+
+    if (json?.status !== true) {
+      const message = "Authentication failed.";
+      return res.status(401).end(JSON.stringify({error: { message } }));
+    }
+
+    payload.token = json.token;
+  }
+
+  const [status, contentType, data] = await httpProxy(url, {
+    method,
+    body: JSON.stringify(payload)
+  });
+
+  if (status !== 200) {
+    logger.debug("Error %d calling endpoint %s", status, url);
+    return res.status(status, data);
+  }
+
+  if (contentType) res.setHeader("Content-Type", contentType);
+  return res.status(status).send(data);
+}