author-vcards.php

<?php

/**
 * Plugin Name: Author VCards
 * Plugin URI: https://github.com/pie/author-vcards/
 * Version: 1.2.8
 * Author: The team at PIE
 * Author URI: https://pie.co.de
 */
namespace PIE\AuthorVcards;

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly.
}

/**
 * Load Composer autoloader
 */

require_once __DIR__ . '/vendor/autoload.php';
$update_checker = \Puc_v4_Factory::buildUpdateChecker(
    'https://pie.github.io/author-vcards/update.json',
    __FILE__,
    'author-vcards'
);

/**
 * Add vcard endpoint and a comment
 *
 * @return void
 */
function add_vcard_endpoint()
{
    add_rewrite_endpoint('vcf', EP_AUTHORS);
}
add_action('init', __NAMESPACE__ . '\add_vcard_endpoint');

/**
 * Add vcard query var
 *
 * @param array $vars
 * @return array
 */
function json_template_redirect()
{
    global $wp_query;

    // if this is not a request for json or a singular object then bail
    if (! isset($wp_query->query_vars['vcf']) || ! is_author()) {
        return;
    }

    // include custom template
    include dirname(__FILE__) . '/vcf-template.php';
    exit;
}
add_action('template_redirect', __NAMESPACE__ . '\json_template_redirect');