Woffice_Members_Map.php

<?php 
/**
 * The private Google API key used for the GeoCoding API
 *
 * @var string
 */
private $privateApiKey = 'aaaaaaa';

/**
 * Woffice_Members_Map constructor.
 *
 */
public function __construct()
{

	// We only run this class if BuddyPress is enabled and so is the xProfile component
	if (!function_exists('bp_is_active') || !bp_is_active('xprofile')) {
		return;
	}

	// WordPress Actions
	add_action('xprofile_updated_profile', array($this, 'createProfileField'));
	add_action('xprofile_updated_profile', array($this, 'saveSingleMember'));
}

/**
 * Save a single member's position
 *
 * This is called whenever a new member is being saved
 *
 * @param int $user_id
 */
public function saveSingleMember($user_id) {

	$users_coordinates = get_option('woffice_map_locations');
	$users_coordinates = json_decode($users_coordinates, true);
	$users_coordinates = (empty($users_coordinates)) ? array() : $users_coordinates;
	$already_exists    = false;

	foreach ($users_coordinates as $key=>$coordinate_array) {
		if ((int) $coordinate_array['user_id'] !== $user_id) {
			continue;
		}

		$already_exists = true;

		$new_user_coordinates = $this->getMemberCoordinates($user_id);

		if (!empty($new_user_coordinates)) {
			$users_coordinates[$key] = $new_user_coordinates;
		}

		break;
	}

	if (!$already_exists) {
		$new_user_coordinates = $this->getMemberCoordinates($user_id);

		if (!empty($new_user_coordinates)) {
			array_push($users_coordinates, $new_user_coordinates);
		}
	}

	update_option('woffice_map_locations', json_encode($users_coordinates));
}

/**
 * Returns the member's lat / lng and name if an address is set in the profile field
 *
 * @param int $user_id
 * @return array - can be empty
 */
private function getMemberCoordinates($user_id) {
	$user_data = array();

	// We get the field data
	$address = xprofile_get_field_data($this->fieldName, $user_id);

	if (empty($address)) {
		return $user_data;
	}

	$location = urlencode($address);

	// We call the Google API API
	$json_decoded = $this->apiRequest($location);

	error_log(json_encode($json_decoded));

	if (empty($json_decoded) || $json_decoded['status'] !== "OK")
		return $user_data;

	// We return a formatted response array
	return array(
		'name'      => $json_decoded['results'][0]['formatted_address'],
		'lat'       => $json_decoded['results'][0]['geometry']['location']['lat'],
		'long'      => $json_decoded['results'][0]['geometry']['location']['lng'],
		'user_id'   => $user_id
	);
}

/**
 * Makes an API call to the Geocoding API
 *
 * We use WordPress request wrapper functions
 *
 * @param string $address - url encoded address
 * @return array
 */
private function apiRequest($address) {
	$request      = wp_remote_get("https://maps.google.com/maps/api/geocode/json?address=" . $address . "&sensor=false&key=" . $this->privateApiKey);
	$response     = wp_remote_retrieve_body($request);
	$json_decoded = json_decode($response, true);

	return $json_decoded;
}