push-receiver/src/index.js

A module to subscribe to GCM/FCM and receive notifications within a node process.

const register = require('./register');
const Client = require('./client.js');

module.exports = {
  listen,
  register,
};

async function listen(credentials, notificationCallback) {
  if (!credentials) {
    throw new Error('Missing credentials');
  }
  if (!credentials.gcm) {
    throw new Error('Missing gcm object in credentials');
  }
  if (!credentials.gcm.androidId) {
    throw new Error('Missing gcm.androidId in credentials');
  }
  if (!credentials.gcm.securityToken) {
    throw new Error('Missing gcm.securityToken in credentials');
  }
  if (!credentials.keys) {
    throw new Error('Missing keys object in credentials');
  }
  if (!credentials.keys.privateKey) {
    throw new Error('Missing keys.privateKey in credentials');
  }
  if (!credentials.keys.authSecret) {
    throw new Error('Missing keys.authSecret in credentials');
  }

  const client = new Client(credentials, credentials.persistentIds);
  client.on('ON_NOTIFICATION_RECEIVED', notificationCallback);
  client.connect();
  return client;
}