Baseline Schema changes.

firebase/functions/index.js

@@ -0,0 +1,35 @@
+// // Create and Deploy Your First Cloud Functions
+// // https://firebase.google.com/docs/functions/write-firebase-functions
+//
+// exports.helloWorld = functions.https.onRequest((request, response) => {
+//  response.send("Hello from Firebase!");
+// });
+
+const functions = require("firebase-functions");
+const admin = require("firebase-admin");
+admin.initializeApp(functions.config().firebase);
+
+// On sign up.
+exports.processSignUp = functions.auth.user().onCreate(user => {
+  const customClaims = {
+    "https://hasura.io/jwt/claims": {
+      "x-hasura-default-role": "user",
+      "x-hasura-allowed-roles": ["user"],
+      "x-hasura-user-id": user.uid
+    }
+  };
+
+  return admin
+    .auth()
+    .setCustomUserClaims(user.uid, customClaims)
+    .then(() => {
+      // Update real-time database to notify client to force refresh.
+      const metadataRef = admin.database().ref("metadata/" + user.uid);
+      // Set the refresh time to the current UTC timestamp.
+      // This will be captured on the client to force a token refresh.
+      return metadataRef.set({ refreshTime: new Date().getTime() });
+    })
+    .catch(error => {
+      console.log(error);
+    });
+});