Example/starting point for custom import jobs using Eventbrite Tickets 4.4.8

custom-import-sample.php

<?php
/**
 * Example of searching Eventbrite for events and importing them via
 * Eventbrite Tickets.
 *
 * By design, Eventbrite Tickets 4.4.x allows importing from whichever user
 * account it has been linked with as well as individual events belonging to 
 * other accounts, which can be specified via their ID or URL.
 *
 * This is an example of searching for and importing a broader swathe of
 * events than those and could be set up to run via a scheduled event or on
 * demand via some other trigger.
 *
 * It's just a starting point! It does not impose any limit on the number of
 * events it attempts to import in a single run. Additionally, it was
 * written to work with Eventbrite Tickets 4.4.8. Your mileage may vary with
 * other versions, particularly the next major version.
 * 
 * @see https://theeventscalendar.com/product/wordpress-eventbrite-tickets/
 */

/**
 * Performs a custom search using the Eventbrite Tickets API.
 *
 * @param $search_term
 *
 * @return object|WP_Error
 */
function custom_eventbrite_search( $search_term ) {
	if ( ! class_exists( 'Tribe__Events__Tickets__Eventbrite__API' ) ) {
		return new WP_Error;
	}

	$api = Tribe__Events__Tickets__Eventbrite__API::instance();

	if ( ! $api->is_ready() ) {
		return new WP_Error;
	}

	$url = $api->get_base_url( 'events/search' );
	return $api->request( $url, [ 'q' => $search_term ], 'get' );
}

/**
 * Given an array of Eventbrite event objects, imports each event.
 *
 * @param array $events
 *
 * @return int|WP_Error
 */
function custom_eventbrite_import( array $events ) {
	if ( ! class_exists( 'Tribe__Events__Tickets__Eventbrite__Main' ) ) {
		return new WP_Error;
	}

	$count = 0;

	try {
		$eventbrite = Tribe__Events__Tickets__Eventbrite__Main::instance();

		foreach ( $events as $event ) {
			// In Eventbrite Tickets 4.4.8 and earlier, there is no way to pass the
			// event object across: we need to communicate the event we wish to import
			// by setting the following superglobal
			$_REQUEST['eventbrite_id'] = $event->id;
			$eventbrite->import_existing_events();
			$count++;
		}
	}
	catch ( Exception $e ) {
		return new WP_Error;
	}

	return $count;
}

// Search for events mentioning "dance"
$search_results = custom_eventbrite_search( 'dance' );

if (
	is_object( $search_results )
	&& property_exists( $search_results, 'events' )
	&& ! empty( $search_results->events )
) {
	custom_eventbrite_import( $search_results->events );
}