hubspot_api_create-or-update_demo.js

/**
 * Create or update a list of contacts in Hubspot.
 * @param registrants Array of contact objects, e.g. from an external data source.
 * @returns The JSON response from Hubspot.
 */ 
async function hubspotCreateOrUpdateContacts( contacts, hubspotAPIKey ) {

	let hubspotContacts = contacts.map( registrant => {

		return {
			email: registrant.email,
			properties: [
				{ property: 'firstname', value: registrant.firstName },
				{ property: 'lastname',  value: registrant.lastName },
			]
		}

	});

	let result = await fetch( 'https://api.hubapi.com/contacts/v1/contact/batch/', {
		method: 'POST',
		headers: {
			'Content-Type': 'application/json',
			'Authorization': `Bearer ${hubspotAPIKey}`
		},
		body: JSON.stringify( hubspotContacts )
	})
	.then( response => response );

	if ( result.statusText !== 'Accepted' ) {
		let errorDescription = await result.text();
		throw new Error( `hubspot-update-failed: ${errorDescription}` );
	}

	console.info( `${contacts.length} contacts were created or updated.` );

	return result;

}