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Edit File: upgrade-sidebar-menu-integration.php

<?php

namespace Yoast\WP\SEO\Plans\User_Interface;

use WPSEO_Addon_Manager;
use WPSEO_Shortlinker;
use Yoast\WP\SEO\Conditionals\Traits\Admin_Conditional_Trait;
use Yoast\WP\SEO\Conditionals\WooCommerce_Conditional;
use Yoast\WP\SEO\General\User_Interface\General_Page_Integration;
use Yoast\WP\SEO\Helpers\Current_Page_Helper;
use Yoast\WP\SEO\Helpers\Product_Helper;
use Yoast\WP\SEO\Integrations\Integration_Interface;
use Yoast\WP\SEO\Promotions\Application\Promotion_Manager;

/**
 * Adds the plans page to the Yoast admin menu.
 */
class Upgrade_Sidebar_Menu_Integration implements Integration_Interface {

use Admin_Conditional_Trait;

/**
	 * The page name.
	 */
	public const PAGE = 'wpseo_upgrade_sidebar';

/**
	 * The WooCommerce conditional.
	 *
	 * @var WooCommerce_Conditional
	 */
	private $woocommerce_conditional;

/**
	 * The shortlinker.
	 *
	 * @var WPSEO_Shortlinker
	 */
	private $shortlinker;

/**
	 * The product helper.
	 *
	 * @var Product_Helper
	 */
	private $product_helper;

/**
	 * The current page helper.
	 *
	 * @var Current_Page_Helper
	 */
	private $current_page_helper;

/**
	 * The promotion manager.
	 *
	 * @var Promotion_Manager
	 */
	private $promotion_manager;

/**
	 * The addon manager.
	 *
	 * @var WPSEO_Addon_Manager
	 */
	private $addon_manager;

/**
	 * Constructor.
	 *
	 * @param WooCommerce_Conditional $woocommerce_conditional The WooCommerce conditional.
	 * @param WPSEO_Shortlinker       $shortlinker             The shortlinker.
	 * @param Product_Helper          $product_helper          The product helper.
	 * @param Current_Page_Helper     $current_page_helper     The current page helper.
	 * @param Promotion_Manager       $promotion_manager       The promotion manager.
	 * @param WPSEO_Addon_Manager     $addon_manager           The addon manager.
	 */
	public function __construct(
		WooCommerce_Conditional $woocommerce_conditional,
		WPSEO_Shortlinker $shortlinker,
		Product_Helper $product_helper,
		Current_Page_Helper $current_page_helper,
		Promotion_Manager $promotion_manager,
		WPSEO_Addon_Manager $addon_manager
	) {
		$this->woocommerce_conditional = $woocommerce_conditional;
		$this->shortlinker             = $shortlinker;
		$this->product_helper          = $product_helper;
		$this->current_page_helper     = $current_page_helper;
		$this->promotion_manager       = $promotion_manager;
		$this->addon_manager           = $addon_manager;
	}

/**
	 * Initializes the integration.
	 *
	 * This is the place to register hooks and filters.
	 *
	 * @return void
	 */
	public function register_hooks() {
		// Add page with PHP_INT_MAX - 1 to allow other items (like Brand Insights) to be positioned after.
		\add_filter( 'wpseo_submenu_pages', [ $this, 'add_page' ], ( \PHP_INT_MAX - 1 ) );
		\add_filter( 'wpseo_network_submenu_pages', [ $this, 'add_page' ], ( \PHP_INT_MAX - 1 ) );
		\add_action( 'admin_init', [ $this, 'do_redirect' ], 1 );
	}

/**
	 * Adds the page to the (currently) last position in the array.
	 *
	 * @param array<string, array<string, array<static|string>>> $pages The pages.
	 *
	 * @return array<string, array<string, array<static|string>>> The pages.
	 */
	public function add_page( $pages ) {
		// Don't show the Upgrade button if Yoast SEO WooCommerce addon is active.
		if ( $this->addon_manager->is_installed( WPSEO_Addon_Manager::WOOCOMMERCE_SLUG ) ) {
			return $pages;
		}

// Don't show the Upgrade button if Premium is active without the WooCommerce plugin.
		if ( $this->product_helper->is_premium() && ! $this->woocommerce_conditional->is_met() ) {
			return $pages;
		}

$button_content = \__( 'Upgrade', 'wordpress-seo' );

if ( $this->promotion_manager->is( 'black-friday-promotion' ) ) {
			$button_content = ( $this->product_helper->is_premium() ) ? \__( 'Get 30% off', 'wordpress-seo' ) : \__( '30% off - BF Sale', 'wordpress-seo' );
		}

$pages[] = [
			General_Page_Integration::PAGE,
			'',
			'<span class="yst-root"><span class="yst-button yst-w-full yst-whitespace-nowrap yst-button--upsell yst-button--small">' . $button_content . ' </span></span>',
			'wpseo_manage_options',
			self::PAGE,
			static function () {
				echo 'redirecting...';
			},
		];

return $pages;
	}

/**
	 * Redirects to the yoast.com.
	 *
	 * @return void
	 */
	public function do_redirect(): void {

if ( $this->current_page_helper->get_current_yoast_seo_page() !== self::PAGE ) {
			return;
		}
		$link = $this->shortlinker->build_shortlink( 'https://yoa.st/wordpress-menu-upgrade-premium' );
		if ( $this->woocommerce_conditional->is_met() ) {
			$link = $this->shortlinker->build_shortlink( 'https://yoa.st/wordpress-menu-upgrade-woocommerce' );
		}

\wp_redirect( $link );//phpcs:ignore WordPress.Security.SafeRedirect.wp_redirect_wp_redirect -- Safe redirect is used here.
		exit();
	}
}

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