class-inactive-plugins.php

<?php
/**
 * Inactive plugins data collector.
 *
 * @package Progress_Planner
 */

namespace Progress_Planner\Suggested_Tasks\Data_Collector;

use Progress_Planner\Suggested_Tasks\Data_Collector\Base_Data_Collector;

/**
 * Inactive plugins data collector class.
 */
class Inactive_Plugins extends Base_Data_Collector {

	/**
	 * The data key.
	 *
	 * @var string
	 */
	protected const DATA_KEY = 'inactive_plugins_count';

	/**
	 * Initialize the data collector.
	 *
	 * @return void
	 */
	public function init() {
		\add_action( 'deleted_plugin', [ $this, 'update_inactive_plugins_cache' ], 10 );
		\add_action( 'update_option_active_plugins', [ $this, 'update_inactive_plugins_cache' ], 10 );
	}

	/**
	 * Update the cache when plugin is activated or deactivated.
	 *
	 * @return void
	 */
	public function update_inactive_plugins_cache() {
		$this->update_cache();
	}

	/**
	 * Calculate the inactive plugins count.
	 *
	 * @return int
	 */
	protected function calculate_data() {
		if ( ! \function_exists( 'get_plugins' ) ) {
			// @phpstan-ignore-next-line requireOnce.fileNotFound
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

		// Clear the plugins cache, so get_plugins() returns the latest plugins.
		\wp_cache_delete( 'plugins', 'plugins' );

		$plugins        = \get_plugins();
		$plugins_active = 0;
		$plugins_total  = 0;

		// Loop over the available plugins and check their versions and active state.
		foreach ( \array_keys( $plugins ) as $plugin_path ) {
			++$plugins_total;

			if ( \is_plugin_active( $plugin_path ) ) {
				++$plugins_active;
			}
		}

		return ! \is_multisite() && $plugins_total > $plugins_active
			? $plugins_total - $plugins_active
			: 0;
	}
}