[FEATURE] Initial Cairo Auth Integration

lib/routes/middlewares/auth-middleware.js

@@ -0,0 +1,32 @@
+// Imports
+import { Router } from "express";
+import bearerTokenMiddleware from "express-bearer-token";
+import { ERR, VERB } from "../../util/logging.js";
+
+// Constants
+const { MCL_CAIRO_URL } = process.env;
+const cairoAuthMiddleware = Router();
+
+const cairoAuthenticate = async (token) => {
+  const config = { headers: { Authorization: `Bearer ${token}` } };
+  return fetch(`${MCL_CAIRO_URL}/api/user/info`, config).then((res) =>
+    res.json(),
+  );
+};
+
+// Middleware
+const cairoAuthHandler = (req, res, next) => {
+  if (!req.token) return res.status(401).send("Cairo auth required!");
+  VERB("AUTH", `${MCL_CAIRO_URL}/api/user/info`);
+  cairoAuthenticate(req.token)
+    .then(() => next())
+    .catch((err) => {
+      ERR("AUTH", err.response ? err.response.data : err.message);
+      if (!err.response) return res.status(500).send(`Auth failure ${err}`);
+      return res.status(err.response.status).send(err.response.data);
+    });
+};
+
+cairoAuthMiddleware.use([bearerTokenMiddleware(), cairoAuthHandler]);
+
+export default cairoAuthMiddleware;