wpmudev-hummingbird-scheduled-cache-clear.php

<?php
/**
* Plugin Name: [Hummingbird] WP schedule task to clear Assets Cache
* Plugin URI: https://premium.wpmudev.org/
* Description: Adds a scheduled task to clear minified assets on daily basis and reports it via email
* Author: Alessandro Kaounas @ WPMUDEV
* Author URI: https://premium.wpmudev.org/
* License: GPLv2 or later
*/

if ( ! defined( 'ABSPATH' ) ) {
	die();
}

if ( ! class_exists( 'WPMUDEV_Hummingbird_Scheduled_Cache_Clear' ) ) {
    
    class WPMUDEV_Hummingbird_Scheduled_Cache_Clear {

		private $notification = true;

		private static $_instance = null;

        public static function get_instance() {

            if( is_null( self::$_instance ) ){
                self::$_instance = new WPMUDEV_Hummingbird_Scheduled_Cache_Clear();
            }
            return self::$_instance;
            
        }

        private function __construct() {
			
			$this->init();			

		}

		private function init(){
			
			if ( ! wp_next_scheduled( 'wpmudev_hb_clear_minified_assets' ) ) {
				wp_schedule_event( time(), 'daily', array( $this, 'wpmudev_hb_clear_minified_assets' ) );
			}
			
			add_action( 'wpmudev_hb_clear_minified_assets', array( $this, 'wpmudev_hb_clear_assets_cache' ) );

		}
		
		public function wpmudev_hb_clear_assets_cache() {
		
			$request = wp_remote_get( get_rest_url( NULL, 'hummingbird/v1/clear_cache/minify' ) );
		
			$title = "Hummingbird Cron Report [" . get_bloginfo() . "]";
		
			if( is_wp_error( $request ) ) {

				if( $this->notification ){
					wp_mail( get_option('admin_email'), $title, sprintf( __( 'An error occured: %s', 'wpmudev_support' ), $request->get_error_message() ) );
				}
				
				return false; // Bail early
			}
		
			$response = json_decode( wp_remote_retrieve_body( $request ), true );
		
			if( ! $response['message'] ){
				$content = sprintf( __( 'Minified assets cache clear status: %s', 'wpmudev_support' ), ( $response['cache_cleared'] ? '[Success]' : '[Failed]') );
			}else{
				$content = $response['message'];
			}
		
			if( $this->notification ){
				wp_mail( get_option('admin_email'), $title, $content );
			}
		
		}
		
	}


	if ( ! function_exists( 'wpmudev_hummingbird_scheduled_cache_clear' ) ) {

        function wpmudev_hummingbird_scheduled_cache_clear() {
            return WPMUDEV_Hummingbird_Scheduled_Cache_Clear::get_instance();
        };

        add_action( 'plugins_loaded', 'wpmudev_hummingbird_scheduled_cache_clear', 99 );
    }

}