Merge pull request #41 from firebase/add-snippets

adding two custom claims snippets

Author: jenperson

auth/custom_claims.js

@@ -29,4 +29,36 @@ admin.auth().getUser(uid).then((userRecord) => {
   // The claims can be accessed on the user record.
   console.log(userRecord.customClaims.admin);
 });
-// [END read_custom_user_claims]
+// [END read_custom_user_claims]
+
+// [START set_custom_user_claims_script]
+admin.auth().getUserByEmail('user@admin.example.com').then((user) => {
+  // Confirm user is verified.
+  if (user.emailVerified) {
+    // Add custom claims for additional privileges.
+    // This will be picked up by the user on token refresh or next sign in on new device.
+    return admin.auth().setCustomUserClaims(user.uid, {
+      admin: true
+    });
+  }
+})
+  .catch((error) => {
+    console.log(error);
+  });
+// [END set_custom_user_claims_script]
+
+// [START set_custom_user_claims_incremental]
+admin.auth().getUserByEmail('user@admin.example.com').then((user) => {
+  // Add incremental custom claim without overwriting existing claims.
+  const currentCustomClaims = user.customClaims;
+  if (currentCustomClaims.admin) {
+    // Add level.
+    currentCustomClaims['accessLevel'] = 10;
+    // Add custom claims for additional privileges.
+    return admin.auth().setCustomUserClaims(user.uid, currentCustomClaims);
+  }
+})
+  .catch((error) => {
+    console.log(error);
+  });
+// [END set_custom_user_claims_incremental]