Add custom claim on ref entry

const functions = require('firebase-functions');
const admin = require('firebase-admin');

exports.addCustomClaim = functions.database.ref('/flamelink/environments/production/content/userAccount/en-US/{entryId}')
  .onCreate((snapshot, context) => {
    const entry = snapshot.val();
    const entryId = context.params.entryId;
    const uid = entry.uid;
    
    // user creating the new entry
    // const uid = context.auth.uid;
    
    return admin.auth().setCustomUserClaims(uid, {userAccount: entryId});
  });