functions.php

<?php
/**
 *
 * DO NOT EDIT THIS FILE
 * Any changes you make to this file will be lost
 * To customise things, create a file at wp-content/themes/fishpig/local.php
 * This file will not be deleted or overwritten and is automatically included at the end of this file
 *
 */
// phpcs:ignoreFile -- this file is a WordPress theme file and will not run in Magento
class FishPig_Theme
{
	/*
	 * @var FishPig_Theme
	 */
	static protected $instance;
	
	/*
	 * @var array
	 */
	protected $data = array();
	
	/*
	 *
	 *
	 */
	protected function __construct()
	{
		$this->setupDataFromMagento();

		add_action('after_setup_theme',          array($this, 'onActionAfterSetupTheme'));
		add_action('wp_loaded',                  array($this, 'onActionWpLoaded'));
		add_action('widgets_init',               array($this, 'onActionWidgetsInit'));
		add_action('init',                       array($this, 'onActionInit'));
		add_filter('redirect_canonical',         array($this, 'onFilterRedirectCanonical'));
		add_filter('preview_post_link',          array($this, 'onFilterPreviewPostLink'), 10, 2);
		add_filter('page_link',                     array($this, 'onPostPageLink'));
		add_filter('post_link',                     array($this, 'onPostPageLink'));
		add_filter('vcv:frontend:pageEditable:url', array($this, 'onPostPageLink')); // VisualComposer
		add_filter('rest_url',                   array($this, 'onFilterRestUrl'));
		add_filter('status_header',              array($this, 'onFilterStatusHeader'), 10, 4);
        add_filter('wp_headers',                 array($this, 'onFilterWPHeaders'), 10, 4);
        add_action('wp_footer',                  array($this, 'onActionWPFooter'), 12);
	   	add_action('save_post',                  array($this, 'preRenderPostContent'));
		add_action('admin_menu',                 array($this, 'onAdminMenu'));
		add_filter('vc_front_render_shortcodes', array($this, 'onVcFrontRenderShortcodes'), 99999);
		add_filter('wp_calculate_image_srcset',  array($this, 'onWpCalculateImageSrcset'));
        add_filter('wp_fatal_error_handler_enabled', '__return_false' );
        add_filter('post_type_link',             array($this, 'onFilterPostTypeLink'), 10, 4);
        add_filter('comment_post_redirect',      array($this, 'onCommentPostRedirect'));

		if ($this->isMagento2()) {
			add_action('save_post', array($this, 'invalidateMagento2FPC'));
			
			$this->initRelatedProducts();
		}
		
		$this->cleanOldFiles();
		$this->includeLocalPhpFile();

		// We have Yoast so lets disable some redirects
        if (isset($GLOBALS['wpseo_rewrite'])) {
            remove_filter('request', array($GLOBALS['wpseo_rewrite'], 'request'));
        }
	}

	/*
	 *
	 *
	 *
	 */
	static public function getInstance()
	{
		if (!self::$instance) {
			($className = __CLASS__) && self::$instance = new $className;
		}

		return self::$instance;
	}

	/*
	 *
	 *
	 *
	 */
	protected function setupDataFromMagento()
	{
		if ($data = get_option('fishpig_magento')) {
			if (strlen($data) > 2 && substr($data, 0, 1) === '{' && substr($data, -1) === '}') {
				$this->data = json_decode($data, true);
			}			
		}
	}

	/*
	 *
	 *
	 *
	 */
	public function getMagentoData($key = null, $default = null)
	{
		if ($key === null) {
			return $this->data;
		}
		
		return isset($this->data[$key]) ? $this->data[$key] : $default;
	}
	
	/*
	 *
	 *
	 *
	 */
	public function onActionAfterSetupTheme()
	{
		add_theme_support('title-tag');
		add_theme_support('post-thumbnails');
		set_post_thumbnail_size(9999, 9999);
		
		add_theme_support('post-formats', array('aside', 'image', 'video', 'quote', 'link', 'gallery', 'status', 'audio', 'chat'));
		
		if (function_exists('show_admin_bar')) {
			show_admin_bar(false);
		}
		
		/* Remove the Emoji JS */
		remove_action( 'wp_head', 'print_emoji_detection_script', 7 ); 
		remove_action( 'admin_print_scripts', 'print_emoji_detection_script' ); 
		remove_action( 'wp_print_styles', 'print_emoji_styles' ); 
		remove_action( 'admin_print_styles', 'print_emoji_styles' );
		
		remove_filter('template_redirect', 'redirect_canonical');
		remove_action('template_redirect', 'wp_old_slug_redirect');
		
		/* Remove wptexturize to fix shortcodes */
		remove_filter('the_content', 'wptexturize');
	}

	/*
	 *
	 *
	 *
	 */
	public function onActionWpLoaded()
	{
		if ($post_types = get_post_types(array('public' => true, '_builtin' => false))) {
			foreach ( $post_types as $post_type) {
				add_filter("theme_{$post_type}_templates", array($this, 'onFilterThemeTemplates'), 10, 4);
			}
		}
	}

	/*
	 *
	 *
	 *
	 */
	public function onFilterThemeTemplates($page_templates, $wp_theme, $post)
	{
		return array(
			'template-empty' => 'Empty',
			'template-1column' => '1 Column',
			'template-2columns-left' => '2 Columns Left',
			'template-2columns-right' => '2 Columns Right',
			'template-3columns' => '3 Columns',		
			'template-full-width' => 'Full Width',
		) + $page_templates;
	}

	/*
	 *
	 *
	 *
	 */
	public function onActionWidgetsInit()
	{
		if ($this->isMagento1()) {
			register_sidebar(array(
				'name' => __( 'Main Sidebar', 'fishpig' ),
				'id' => 'sidebar-1',
				'description' => 'Add widgets here to appear in your left Magento sidebar.',
				'before_widget' => '<aside id="%1$s" class="widget %2$s">',
				'after_widget' => '</aside>',
				'before_title' => '<h2 class="widget-title">',
				'after_title' => '</h2>',
			));
			
			register_sidebar(array(
				'name' => __( 'Right Sidebar', 'fishpig' ),
				'id' => 'sidebar-2',
				'description' => 'Add widgets here to appear in your right Magento sidebar.',
				'before_widget' => '<aside id="%1$s" class="widget %2$s">',
				'after_widget' => '</aside>',
				'before_title' => '<h2 class="widget-title">',
				'after_title' => '</h2>',
			));
		}
		else {
			register_sidebar(array(
				'name' => __( 'Main Sidebar', 'fishpig' ),
				'id' => 'sidebar-main',
				'description' => 'Add widgets here to appear in your left Magento sidebar.',
				'before_widget' => '<aside id="%1$s" class="widget %2$s">',
				'after_widget' => '</aside>',
				'before_title' => '<h2 class="widget-title">',
				'after_title' => '</h2>',
			));
		}
		

        global $wp_widget_factory;
    
        remove_action('wp_head', array($wp_widget_factory->widgets['WP_Widget_Recent_Comments'], 'recent_comments_style'));
	}

	/*
	 *
	 *
	 *
	 */
	public function onActionInit()
	{
		add_rewrite_rule('^wordpress/post/preview/?$', 'index.php', 'top');
	}

	/*
	 *
	 *
	 *
	 */
	public function onFilterRedirectCanonical($redirect_url)
	{
		return is_404() ? false : $redirect_url;
	}

	/*
	 *
	 *
	 *
	 */
	public function preRenderPostContent($post_id)
	{
        try {
    	    $post    = get_post($post_id);
            $content = apply_filters('the_content', $post->post_content);

#       	if (function_exists('do_blocks')) {
#              	$content = do_blocks($content);
#    	    }

        	if (!empty($GLOBALS['wp_embed'])) {
                $content = $GLOBALS['wp_embed']->autoembed($content);
            }
      
            // Auto include the related products shortcode
            if (class_exists('FishPig_RelatedProducts')) {
                if ((int)get_option('fprp_autoinclude', 1) === 1) {
                    $content .= '[related_products]';
                }
            }
          
            update_post_meta($post_id, '_post_content_rendered', $content);
        }
        catch (Exception $e) {}
	}
	
	/*
	 *
	 *
	 *
	 */
	public function invalidateMagento2FPC($post_id)
	{
		// If this is just a revision, don't do anything
		if ( wp_is_post_revision( $post_id ) ) {
			return;
		}
	
		// Make an invalidation call to Magento
		$salt = get_option( 'fishpig_salt' );
		
		if (!$salt) {
			$salt = wp_generate_password( 64, true, true );
			update_option( 'fishpig_salt', $salt );
		}
	
		$nonce_tick = ceil(time() / ( 86400 / 2 ));
	
		$action = 'invalidate_wordpress_post_' . $post_id;
	
		$nonce = substr( hash_hmac( 'sha256', $nonce_tick . '|fishpig|' . $action, $salt ), -12, 10 );

		$invalidationUrl = add_query_arg([
                '_fp_invalidate' => $nonce,
                '_time' => time(),
            ], 
            get_permalink($post_id)
		);

		// Send the HTTP request
		if (function_exists('curl_init')) {
    		$ch = curl_init($invalidationUrl);

            curl_setopt_array($ch, [
                CURLOPT_URL => $invalidationUrl,
                CURLOPT_HEADER => false,
                CURLOPT_RETURNTRANSFER => true,
                CURLOPT_SSL_VERIFYPEER => false,
                CURLOPT_SSL_VERIFYHOST => false,
                CURLOPT_CONNECTTIMEOUT => 10
            ]);
            
            curl_exec($ch);
            curl_close($ch);
        } else {
            wp_remote_get($invalidationUrl);
        }
	}

	/**
	 * @param string $previewLink
	 * @param $post
	 * @return string
	 */
	public function onFilterPreviewPostLink($previewLink, $post)
	{
    	if ($pageForPostsUrl = $this->getPageForPostsUrl()) {
        	$queryString = substr($previewLink, strpos($previewLink, '?'));
            $previewLink = $pageForPostsUrl . $queryString;
    	}

		return $previewLink . '&fishpig=' . time();
	}
	
    /**
     *
     */
    public function onPostPageLink($postLink)
    {
        if (strpos($postLink, 'page_id=') === false && strpos($postLink, '?p=') === false) {
            return $postLink;
        }

    	$homeUrl = rtrim(get_option('home'), '/') . '/';
    	$queryString = substr($postLink, strpos($postLink, '?'));
        $postLink = $homeUrl . $queryString;

        return $postLink . '&fishpig=' . time() . '&preview=true';
    }

    /**
     *
     */
    private function getPageForPostsUrl()
    {
    	if ($pageForPostsId = (int)get_option('page_for_posts')) {
            return get_permalink($pageForPostsId);
    	} 
    	
    	return false;
    }

	/**
	 *
	 */
	public function onFilterRestUrl($rest)
	{
		$find   = '/wp-json/';
		$pos    = strpos($rest, $find);
		$extra  = '';
	
		if ($pos !== false && strlen($rest) > $pos+strlen($find)) {
			$extra = substr($rest, $pos+strlen($find));
		}
	
		return get_option('siteurl') . '/index.php?rest_route=/' . ltrim($extra, '/');
		return get_option('siteurl') . '/index.php/wp-json/' . $extra;
	}

	/**
	 *
	 */
	public function onFilterStatusHeader($status_header, $code, $description, $protocol)
	{
		if ((int)$code === 404) {
			return '';
		}
		
		return $status_header;
	}

  /*
   *
   *
   * @param  $headers array
   * @return array
   */	
	public function onFilterWPHeaders($headers)
	{
      	if (isset($headers['Content-Type']) && strpos($headers['Content-Type'], 'text/html') !== false) {
        	unset($headers['Content-Type']);
        }
        
        return $headers;
	}

	/*
	 *
	 *
	 *
	 */
	public function includeLocalPhpFile()
	{
		$localFile = __DIR__ . DIRECTORY_SEPARATOR . 'local.php';

		if (is_file($localFile)) {
			include($localFile);
		}
		
		return $this;
	}

	/*
	 *
	 *
	 *
	 */
	protected function cleanOldFiles()
	{
		$files = array(
			__DIR__ . '/cpt.php',
		);
		
		foreach($files as $file) {
			if (is_file($file)) {
				@unlink($file);
			}
		}
	}

	/*
	 *
	 *
	 *
	 */
	protected function initRelatedProducts()
	{
		// Related Products
		if (is_file(__DIR__ . DIRECTORY_SEPARATOR . 'related-products.php')) {
			include(__DIR__ . DIRECTORY_SEPARATOR . 'related-products.php');	
		}
		else {
			add_action('add_meta_boxes', array($this, 'onActionAddMetaBoxesRelatedProducts'));
		}
	}

	/*
	 *
	 *
	 *
	 */
	public function onActionAddMetaBoxesRelatedProducts()
	{
		add_meta_box(
			'fishpig',
			'Related Products',
			function() {
				?>
				<p>Link your WordPress posts (any post type) with Magento products using the new <a href="https://fishpig.co.uk/magento/wordpress-integration/related-products/" target="_blank">Related Products</a> module by FishPig.</p>
				<button onclick="window.open('https://fishpig.co.uk/magento/wordpress-integration/related-products/');" type="button" class="components-button is-button is-default is-primary is-large">View Module</button>
				<?php
			}
		);
	}

	/*
     *
     *
     *
     */
	public function onActionWPFooter()
	{
        wp_deregister_script('wp-embed');
    
        // Divi
        if (isset($_GET['et_fb'])) {
            wp_dequeue_style('wp-auth-check');
            wp_dequeue_script('wp-auth-check');
            remove_action('wp_print_footer_scripts', 'et_fb_output_wp_auth_check_html', 5);
        }
	}

    /**
     *
     */
    public function onWpCalculateImageSrcset($sources)
    {
        return false;
    }
    
	/*
	 *
	 *
	 * @return bool
	 */
	public function isMagento1()
	{
		return !$this->isMagento2();
	}

	/*
	 *
	 *
	 * @return bool
	 */
	public function isMagento2()
	{
		return (int)$this->getMagentoData('version') === 2;
	}

	/**
     * Remove the Customizer menu link
     */
    public function onAdminMenu()
    {
        global $submenu;

        if (isset($submenu['themes.php'])) {
            foreach($submenu['themes.php'] as $it => $menuItem ) {
                if (in_array('Customize', $menuItem) || in_array('Customizer', $menuItem)) {
                    unset($submenu['themes.php'][$it]);
                }
            }
        }
    }
    
    /**
     *
     */    
    public function onVcFrontRenderShortcodes($content)
    {
        return '<!--FP-the_content-->' . $content . '<!--/FP-the_content-->';
    }

    /**
     *
     */
    public function onFilterPostTypeLink($postLink, $post)
    {
        if (strpos($postLink, '%') === false) {
            return $postLink;
        }
    
        if (!preg_match_all('/\/%([^%]+)%\//U', $postLink, $matches)) {
            return $postLink;
        }
    
        foreach ($matches[1] as $it => $taxonomy) {
            $token = $matches[0][$it];
            $change = '/';
    
            if ($terms = get_the_terms($post->ID, $taxonomy)) {
                foreach ($terms as $term) {
                    if (is_object($term)) {
                        $change = '/' . $term->slug . '/';
                        break;
                    }
                }
            }
            
            $postLink = str_replace($token, $change, $postLink);
        }
        
        return $postLink;
    }
    
    /**
     *
     */
    public function onCommentPostRedirect($location)
    {
        if (($hashPosition = strpos($location, '#')) !== false) {
            $hash = substr($location, $hashPosition+1);
            $location = substr($location, 0, $hashPosition);
            
            $location = add_query_arg(
                [
                    '_hash' => $hash
                ],
                $location
            );
        }
    
    
        return $location;
    }
}

/*
 * Create the object
 * This will setup the actions automatically
 *
 */
if (basename(__DIR__) !== 'wptheme') {
	FishPig_Theme::getInstance();
}
else {
	/*
	 * If here, this is probably the Magento compiler
	 * We don't want this to run in Magento as it's a WordPress file
	 */
}

/**
 *
 * DO NOT EDIT THIS FILE!
 *
 * Any changes you make to this file will be lost
 * To customise things, create a file at wp-content/themes/fishpig/local.php
 * This file will not be deleted or overwritten and is automatically included by this file.
 *
 */