JezK

namespace RankMathPro\Admin;

use RankMath\Helper;
use RankMath\Helpers\Str;
use RankMath\Helpers\Arr;
use RankMath\Admin\Admin_Helper;
use RankMath\Traits\Hooker;

defined( 'ABSPATH' ) || exit;

/**
 * Links class.
 *
 * @codeCoverageIgnore
 */
class Links {

use Hooker;

/**
	 * Base host.
	 *
	 * @var string
	 */
	protected $base_host = '';

/**
	 * Base path.
	 *
	 * @var string
	 */
	protected $base_path = '';

/**
	 * Register hooks.
	 */
	public function __construct() {
		$this->base_host = Helper::get_url_part( home_url(), 'host' );

$base_path = Helper::get_url_part( home_url(), 'path' );
		if ( $base_path ) {
			$this->base_path = trailingslashit( $base_path );
		}

$this->action( 'rank_math/links/is_external', 'link_is_external', 20, 2 );
		$this->action( 'rank_math/admin/enqueue_scripts', 'add_json', 20 );
	}

/**
	 * Make cloaked affiliate links external.
	 *
	 * @param bool  $is_external Is external link.
	 * @param array $url_parts   URL parts from wp_parse_url().
	 * @return mixed
	 */
	public function link_is_external( $is_external, $url_parts ) {
		if ( empty( $url_parts['path'] ) ) {
			return $is_external;
		}

// Check if internal link.
		if (
			! isset( $url_parts['host'] )
			|| '' === $url_parts['host']
			|| $url_parts['host'] === $this->base_host
		) {
			// Check if path starts with one of the affiliate_link_prefixes.
			$prefixes = Arr::from_string( Helper::get_settings( 'general.affiliate_link_prefixes' ), "\n" );
			foreach ( $prefixes as $prefix ) {
				if ( Str::starts_with( $prefix, $url_parts['path'] ) ) {
					return true;
				}
			}
		}

return $is_external;
	}

/**
	 * Add JSON.
	 *
	 * @return void
	 */
	public function add_json() {
		$prefixes = Arr::from_string( Helper::get_settings( 'general.affiliate_link_prefixes' ), "\n" );
		wp_enqueue_script(
			'rank-math-pro-links',
			RANK_MATH_PRO_URL . 'assets/admin/js/links.js',
			[ 'wp-hooks' ],
			rank_math_pro()->version,
			true
		);
		Helper::add_json( 'affiliate_link_prefixes', $prefixes );
	}
}

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Edit File: class-links.php

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