1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
<?php
/**
* WPKlaviyoAnalytics.
*
* @package WooCommerceKlaviyo
* @version 2.0.0
*/
/**
* Handles inserting klaviyo.js for tracking.
*/
class WPKlaviyoAnalytics {
const HIGHEST_FILTER_PRIORITY = 0;
const DEFAULT_FILTER_PRIORITY = 10;
const FILTER_THREE_ARGUMENTS = 3;
const KLAVIYO_JS_HANDLE = 'klaviyojs';
/**
* Klaviyo account public API key.
*
* @var string $klaviyo_public_key Klaviyo account public API key.
*/
private $klaviyo_public_key;
/**
* Constructor
*
* @param string $klaviyo_public_key Klaviyo public API key.
*/
public function __construct( $klaviyo_public_key ) {
$this->klaviyo_public_key = $klaviyo_public_key;
// Add analytics.
add_action(
'wp_enqueue_scripts',
array( $this, 'insert_analytics' ),
self::HIGHEST_FILTER_PRIORITY
);
// Add js to identify user if commenter or logged-in. Priority 11 to add before Viewed Product.
add_action(
'wp_enqueue_scripts',
array( $this, 'identify_browser' ),
11
);
}
/**
* Check WooCommerce plugin status, and run is_checkout() function.
*/
public function is_woocommerce_checkout_page() {
if ( is_plugin_active( 'woocommerce/woocommerce.php' ) ) {
return is_checkout();
}
}
/**
* Add klaviyo.js as external resource if public API key is set.
*/
public function insert_analytics() {
if ( '' == $this->klaviyo_public_key || $this->is_woocommerce_checkout_page() ) {
return;
}
$klaviyo_js_source = '//static.klaviyo.com/onsite/js/' . $this->klaviyo_public_key . '/klaviyo.js';
wp_enqueue_script( self::KLAVIYO_JS_HANDLE, $klaviyo_js_source, null, WCK_API::VERSION, true );
add_filter(
'script_loader_tag',
array( &$this, 'kl_add_async' ),
self::DEFAULT_FILTER_PRIORITY,
self::FILTER_THREE_ARGUMENTS
);
}
/**
* Filter to add async attribute to script tag.
* Currently only used on enqueue script handle "klaviyojs".
*
* @param string $tag filter hook.
* @param string $handle tag of enqueue script.
* @param string $src source of script to be enqueued.
*
* @return string if script handle is for installing klaviyo.js return script element
* with source set to $src and async attribute else return filter hook
*/
public function kl_add_async( $tag, $handle, $src ) {
if ( self::KLAVIYO_JS_HANDLE !== $handle ) {
return $tag;
}
return "<script async src='" . $src . "'></script>"; // phpcs:ignore
}
/**
* Get logged in user and commenter and make available to kl-identify-browser.js
*/
public function identify_browser() {
global $current_user;
$commenter = wp_get_current_commenter();
$commenter_email = ! empty( $commenter['comment_author_email'] ) ? $commenter['comment_author_email'] : '';
wp_enqueue_script(
'kl-identify-browser',
plugins_url( '/js/kl-identify-browser.js', __FILE__ ),
array( self::KLAVIYO_JS_HANDLE ),
WCK_API::VERSION,
true
);
$kl_user = array(
'current_user_email' => $current_user->user_email,
'commenter_email' => $commenter_email,
);
wp_localize_script( 'kl-identify-browser', 'klUser', $kl_user );
}
}
|