class.jetpack-affiliate.php — Jetpack – WP Security, Backup, Speed, & Growth 7.2.1

jetpack / class.jetpack-affiliate.php

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class.jetpack-affiliate.php

79 lines

1	<?php
2
3	if ( ! defined( 'ABSPATH' ) ) {
4	// Exit if accessed directly
5	exit;
6	}
7
8	/**
9	* This class introduces routines to get an affiliate code, that might be obtained from:
10	* - an `jetpack_affiliate_code` option in the WP database
11	* - an affiliate code returned by a filter bound to the `jetpack_affiliate_code` filter hook
12	*
13	* @since 6.9.0
14	*/
15	class Jetpack_Affiliate {
16
17	/**
18	* @since 6.9.0
19	* @var Jetpack_Affiliate This class instance.
20	**/
21	private static $instance = null;
22
23	private function __construct() {
24	if ( Jetpack::is_development_mode() ) {
25	return;
26	}
27	}
28
29	/**
30	* Initializes the class or returns the singleton
31	*
32	* @since 6.9.0
33	*
34	* @return Jetpack_Affiliate \| false
35	*/
36	public static function init() {
37	if ( is_null( self::$instance ) ) {
38	self::$instance = new Jetpack_Affiliate;
39	}
40	return self::$instance;
41	}
42
43	/**
44	* Returns the affiliate code from database after filtering it.
45	*
46	* @since 6.9.0
47	*
48	* @return string The affiliate code.
49	*/
50	public function get_affiliate_code() {
51	/**
52	* Allow to filter the affiliate code.
53	*
54	* @since 6.9.0
55	*
56	* @param string $aff_code The affiliate code, blank by default.
57	*/
58	return apply_filters( 'jetpack_affiliate_code', get_option( 'jetpack_affiliate_code', '' ) );
59	}
60
61	/**
62	* Returns the passed URL with the affiliate code added as a URL query arg.
63	*
64	* @since 6.9.0
65	*
66	* @param string $url The URL where the code will be added.
67	*
68	* @return string The passed URL with the code added.
69	*/
70	public function add_code_as_query_arg( $url ) {
71	if ( '' !== ( $aff = $this->get_affiliate_code() ) ) {
72	$url = add_query_arg( 'aff', $aff, $url );
73	}
74	return $url;
75	}
76	}
77
78	add_action( 'init', array( 'Jetpack_Affiliate', 'init' ) );
79