newspack-plugin-update-checker.php

<?php
/**
 * Plugin Name: Newspack Plugin Update Checker
 * Description: Keep tabs on updates to Newspack plugins that are only available on Github
 * Version: 0.1.0
 * Author: Adam Schweigert, Media Toybox
 * Author URI: https://mediatoybox.com
 * License: GPL2
 *
 * @package Newspack-Plugin-Update-Checker
 */

defined( 'ABSPATH' ) || exit;

// Load the update checker library https://github.com/YahnisElsts/plugin-update-checker.
require_once 'vendor/plugin-update-checker/plugin-update-checker.php';
use YahnisElsts\PluginUpdateChecker\v5\PucFactory;

// Automattic github org url.
define( 'A8C_GH_URL', 'https://github.com/Automattic/' );

if ( ! function_exists( 'npuc_newspack_plugin_update' ) ) {
	/**
	 * Loop through the plugins, make sure they exist, run the update checker.
	 */
	function npuc_newspack_plugin_update() {

		// The most commonly used Newspack plugins that are not in the wp.org directory.
		$newspack_plugin_list = array(
			'newspack-plugin',
			'newspack-ads',
			'newspack-blocks',
			'newspack-popups',
			'newspack-listings',
			'newsspack-sponsors',
			'newspack-media-partners',
			'newspack-rss-enhancements',
			'newspack-supporters',
		);
		apply_filters( 'npuc_newspack_plugin_list', $newspack_plugin_list );

		foreach ( $newspack_plugin_list as $plugin_slug ) {
			if ( 'newspack-plugin' === $plugin_slug ) {
				// The main Newspack plugin uses newspack.php instead of newspack-plugin.php.
				$plugin_file = WP_PLUGIN_DIR . '/' . $plugin_slug . '/newspack.php';
			} else {
				$plugin_file = WP_PLUGIN_DIR . '/' . $plugin_slug . '/' . $plugin_slug . '.php';
			}

			// Github repo URL for the plugin.
			$github_url = A8C_GH_URL . $plugin_slug;

			// Check to make sure this particular plugin file exists before we check for updates.
			if ( file_exists( $plugin_file ) ) {
				$npuc_update_checker = PucFactory::buildUpdateChecker(
					$github_url,
					$plugin_file,
					$plugin_slug,
				);
				// Newspack uses composer to build releases so we need to use the zip file from the latest release instead of the stable branch.
				$npuc_update_checker->getVcsApi()->enableReleaseAssets();
			}
		}
	}
}
add_action( 'plugins_loaded', 'npuc_newspack_plugin_update' );