[Hummingbird Pro] - Fix jQuery undefined after enabled CDN

hmbp-fix-jquery-undefined-after-enabled-cdn.php

<?php
/**
 * Plugin Name: [Hummingbird Pro] - Fix jQuery undefined after enabled CDN
 * Description: [Hummingbird Pro] - Fix jQuery undefined after enabled CDN - Required 2.1.0 - 1122891649416329
 * Author: Thobk @ WPMUDEV
 * Author URI: https://premium.wpmudev.org/profile/tho2757
 * License: GPLv2 or later
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

add_action( 'plugins_loaded', 'wpmudev_hmbp_fix_jquery_undefined_after_enabled_cdn_func', 100 );

function wpmudev_hmbp_fix_jquery_undefined_after_enabled_cdn_func() {
	if( defined('WPHB_VERSION') && class_exists( 'Hummingbird\WP_Hummingbird' ) && class_exists('Hummingbird\Core\Settings') ){
		// only custom for front-end
		if( is_admin() || ! Hummingbird\Core\Settings::get_setting( 'use_cdn', 'minify' ) ){
			return;
		}

		class WPMUDEV_HB_Fix_jQuery_Undefined{
			private $uncompress_styles = [];
			private $uncompress_scripts = [];
			private $uncompress_ids = [];

			public function __construct(){

				$this->uncompress_styles = apply_filters( 'wpmudev_hb_list_uncompress_styles', array(
					'fonts-awesome' // list handle name
				) );

				$this->uncompress_scripts = apply_filters( 'wpmudev_hb_list_uncompress_scripts', array() );

				add_action( 'wp_head', array( $this, 'uncompress_assets'), 2 );


				add_action( 'wp_print_scripts', array( $this, 'load_jquery' ), 0 );
			}

			public function get_file_id( $handle_urls, $type='scripts' ){
				$post_title   = wp_hash( maybe_serialize( $handle_urls ) ) . '-' . $type;

				$post_ids = get_posts(
					array(
						'name'        => $post_title,
						'post_type'   => 'wphb_minify_group',
						'numberposts' => 1,
						'fields'      => 'ids',
					)
				);

				return $post_ids ? end( $post_ids ) : 0;
			}

			public function get_cdn_link($handle_urls, $type='scripts'){
				$file_id = $this->get_file_id( $handle_urls, $type );
				if( $file_id ){
					$cdn_link = get_post_meta( $file_id, '_url', true );
				}else{
					$cdn_link = false;
				}

				return $cdn_link;
			}
			public function load_jquery() {
				global $wp_scripts;
				if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
					$wp_scripts = wp_scripts();
				}

				// uncompress_lib
				if( ! empty( $this->list_uncompress_lib['scripts'] ) ){
					foreach( $this->list_uncompress_lib['scripts'] as $handle ){
						$this->list_uncompress_lib[ 'scripts' ][ $file_id ] = $handle;
					}
				} 


				// load jquery
				$wp_scripts->done[] = 'jquery-core';
				$wp_scripts->done[] = 'jquery-migrate';
				$wp_scripts->done[] = "jquery";

				$jquery_src = "/wp-includes/js/jquery/jquery.js";
				$jquery_migrate = "/wp-includes/js/jquery/jquery-migrate.min.js";
				if( isset( $wp_scripts->registered['jquery-core'] ) ){
					$jquery_src = $wp_scripts->registered['jquery-core']->src;
					$handle_urls = [$wp_scripts->registered['jquery-core']->handle => $jquery_src];
					
					$cdn_link = $this->get_cdn_link( $handle_urls, 'scripts' );

					if( $cdn_link ){
						$jquery_src = $cdn_link;
					}else{
						$jquery_src .='?ver='. $wp_scripts->registered['jquery-core']->ver;
					}

					if( isset( $wp_scripts->registered['jquery-migrate']) ){
						$jquery_migrate = $wp_scripts->registered['jquery-migrate']->src;

						$handle_urls = [$wp_scripts->registered['jquery-migrate']->handle => $jquery_src];
						$cdn_link = $this->get_cdn_link( $handle_urls, 'scripts' );

						if( $cdn_link ){
							$jquery_migrate = $cdn_link;
						}else{
							$jquery_migrate .='?ver='. $wp_scripts->registered['jquery-core']->ver;
						}
					}
				}


				if ( ! preg_match( '|^(https?:)?//|', $jquery_src ) && ! ( $wp_scripts->content_url && 0 === strpos( $jquery_src, $wp_scripts->content_url ) ) ) {
					$jquery_src = $wp_scripts->base_url . $jquery_src;
				}
				if ( ! preg_match( '|^(https?:)?//|', $jquery_migrate ) && ! ( $wp_scripts->content_url && 0 === strpos( $jquery_migrate, $wp_scripts->content_url ) ) ) {
					$jquery_migrate = $wp_scripts->base_url . $jquery_migrate;
				}
				echo "<script type='text/javascript' src='{$jquery_src}'></script>";
				echo "<script type='text/javascript' src='{$jquery_migrate}'></script>";
			}

			public function uncompress_assets(){
				// styles
				$this->uncompress_styles();

				// scripts
				$this->uncompress_scripts();

				if( ! empty( $this->uncompress_ids ) ){
					add_filter( 'get_post_metadata', array( $this, 'disable_cdn_link_for_uncompress_assets'), 10, 3 );
				}
			}

			public function uncompress($handle, $asset_obj, $type ){

				if( ! isset( $asset_obj->registered[ $handle ] ) || ( $asset_obj->content_url && false !== strpos( $asset_obj->registered[ $handle ]->src, $asset_obj->content_url ) ) ){
					return;
				}

				$handle_urls = [$asset_obj->registered[ $handle ]->handle => $asset_obj->registered[ $handle ]->src];

				$file_id = $this->get_file_id( $handle_urls, $type );

				if( $file_id ){
					$this->uncompress_ids[ $file_id ] = $handle;
				}
			}

			public function uncompress_scripts(){
				if( empty( $this->uncompress_scripts ) || ! is_array( $this->uncompress_scripts ) ) return;

				global $wp_scripts;
				if ( ! ( $wp_scripts instanceof WP_Scripts ) ) {
					$wp_scripts = wp_scripts();
				}

				foreach( $this->uncompress_scripts as $handle ){
					// un compress styles
					$this->uncompress( $handle, $wp_styles, 'styles' );
				}
			}

			public function uncompress_styles(){

				if( empty( $this->uncompress_styles ) || ! is_array( $this->uncompress_styles ) ) return;

				$wp_styles = wp_styles();

				foreach( $this->uncompress_styles as $handle ){
					// un compress styles
					$this->uncompress( $handle, $wp_styles, 'styles' );
				}
			}


			public function disable_cdn_link_for_uncompress_assets( $val, $post_id, $key){
				if( '_url' !== $key ){
					return $val;
				}

				if( isset( $this->uncompress_ids[ $post_id ] ) ){
					$val = false;
				}

				return $val;
			}
		}

		add_action( 'init', function(){
			$run = new WPMUDEV_HB_Fix_jQuery_Undefined();
		});

	}
}