79 lines
1.7 KiB
PHP
79 lines
1.7 KiB
PHP
<?php
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if ( ! defined( 'ABSPATH' ) ) {
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// Exit if accessed directly
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exit;
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}
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/**
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* This class introduces routines to get an affiliate code, that might be obtained from:
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* - an `jetpack_affiliate_code` option in the WP database
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* - an affiliate code returned by a filter bound to the `jetpack_affiliate_code` filter hook
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*
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* @since 6.9.0
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*/
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class Jetpack_Affiliate {
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/**
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* @since 6.9.0
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* @var Jetpack_Affiliate This class instance.
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**/
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private static $instance = null;
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private function __construct() {
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if ( Jetpack::is_development_mode() ) {
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return;
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}
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}
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/**
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* Initializes the class or returns the singleton
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*
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* @since 6.9.0
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*
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* @return Jetpack_Affiliate | false
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*/
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public static function init() {
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if ( is_null( self::$instance ) ) {
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self::$instance = new Jetpack_Affiliate;
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}
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return self::$instance;
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}
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/**
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* Returns the affiliate code from database after filtering it.
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*
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* @since 6.9.0
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*
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* @return string The affiliate code.
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*/
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public function get_affiliate_code() {
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/**
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* Allow to filter the affiliate code.
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*
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* @since 6.9.0
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*
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* @param string $aff_code The affiliate code, blank by default.
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*/
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return apply_filters( 'jetpack_affiliate_code', get_option( 'jetpack_affiliate_code', '' ) );
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}
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/**
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* Returns the passed URL with the affiliate code added as a URL query arg.
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*
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* @since 6.9.0
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*
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* @param string $url The URL where the code will be added.
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*
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* @return string The passed URL with the code added.
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*/
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public function add_code_as_query_arg( $url ) {
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if ( '' !== ( $aff = $this->get_affiliate_code() ) ) {
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$url = add_query_arg( 'aff', $aff, $url );
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}
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return $url;
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}
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}
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add_action( 'init', array( 'Jetpack_Affiliate', 'init' ) );
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