util-remote-sync.js

const twilio = require('twilio')

const client = new twilio.Twilio(
	process.env.TWILIO_ACCOUNT_SID,
	process.env.TWILIO_AUTH_TOKEN)

const retrieveDocument = function (name) {
	console.log('Retrieve Remote Document: ' + name)

	return new Promise((resolve, reject) => {

		client.sync.services(process.env.TWILIO_SYNC_SERVICE_SID).documents(name).fetch()
			.then(doc => {
				/* we could retrieve the document */
				resolve(doc)
			}).catch(error => {

				/* create a new document */
				const payload = {
					uniqueName: name,
					data: null
				}

				return client.sync.services(process.env.TWILIO_SYNC_SERVICE_SID).documents.create(payload)
					.then(doc => {
						resolve(doc)
					}).catch(error => {
						reject(error)
					})

			})

	})

}

module.exports.update = function (name, data) {
	const payload = {
		name: name,
		data: JSON.stringify(data)
	}

	return new Promise ((resolve, reject) => {

		retrieveDocument(name)
			.then(doc => {
				console.log('Remote Update: ' + name)
				client.sync.services(process.env.TWILIO_SYNC_SERVICE_SID).documents(doc.sid).update(payload)
					.then(doc => {
						resolve(doc)
					})

			}).catch(error => {
				console.log(error)
				reject(error)
			})

	})

}