https://twoseedsinapod.com/wp-content/plugins/facebook-for-woocomm…cebook-for-woocommerce-signals.js?ver=3.7.6

1/**
2 * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
3 *
4 * This source code is licensed under the license found in the
5 * LICENSE file in the root directory of this source tree.
6 *
7 * @package FacebookCommerce
8 */
9
10/**
11 * Facebook for WooCommerce - Signals helper.
12 *
13 * Exposes `window.fbwcsignal` so a CMP or theme integration can hold or
14 * release signal delivery while keeping the plugin loaded.
15 *
16 * @package FacebookCommerce
17 */
18( function () {
19	'use strict';
20
21	var COOKIE_NAME = 'wc_facebook_signals_state';
22	var STATE_ACTIVE = 'active';
23	var STATE_HELD = 'held';
24
25	/**
26	 * Minimal cookie setter.
27	 *
28	 * @param {string} name
29	 * @param {string} value
30	 * @param {number} days
31	 */
32	function setCookie( name, value, days ) {
33		var d = new Date();
34		d.setTime( d.getTime() + days * 86400000 );
35		document.cookie =
36			name +
37			'=' +
38			encodeURIComponent( value ) +
39			';expires=' +
40			d.toUTCString() +
41			';path=/;SameSite=Lax';
42	}
43
44	/**
45	 * Read a cookie value.
46	 *
47	 * @param {string} name
48	 * @return {string|null}
49	 */
50	function getCookie( name ) {
51		var match = document.cookie.match(
52			new RegExp( '(?:^|;\\s*)' + name + '=([^;]*)' )
53		);
54		return match ? decodeURIComponent( match[ 1 ] ) : null;
55	}
56
57	/**
58	 * Update the stored signal state and sync it to PHP.
59	 *
60	 * @param {string} state `active` or `held`.
61	 * @return {Promise} Resolves with the backend response.
62	 */
63	function updateState( state ) {
64		setCookie( COOKIE_NAME, state, 365 );
65
66		var params = wc_facebook_signals_params; // localized by PHP.
67
68		return new Promise( function ( resolve, reject ) {
69			var xhr = new XMLHttpRequest();
70			xhr.open( 'POST', params.ajax_url, true );
71			xhr.setRequestHeader(
72				'Content-Type',
73				'application/x-www-form-urlencoded; charset=UTF-8'
74			);
75			xhr.onload = function () {
76				if ( xhr.status >= 200 && xhr.status < 300 ) {
77					try {
78						var data = JSON.parse( xhr.responseText );
79						resolve( data );
80					} catch ( e ) {
81						reject( e );
82					}
83				} else {
84					reject( new Error( 'AJAX failed: ' + xhr.status ) );
85				}
86			};
87			xhr.onerror = function () {
88				reject( new Error( 'Network error' ) );
89			};
90			xhr.send(
91				'action=' +
92					encodeURIComponent( params.action ) +
93					'&security=' +
94					encodeURIComponent( params.nonce ) +
95					'&state=' +
96					encodeURIComponent( state )
97			);
98		} );
99	}
100
101	/**
102	 * Hold browser/server signals for subsequent requests.
103	 *
104	 * @return {Promise}
105	 */
106	function hold() {
107		return updateState( STATE_HELD );
108	}
109
110	/**
111	 * Release held signals and flush any queued browser events.
112	 *
113	 * @return {Promise}
114	 */
115	function release() {
116		return updateState( STATE_ACTIVE ).then( function ( data ) {
117			if (
118				window.FacebookSignals &&
119				window.FacebookSignals._held
120			) {
121				return window.FacebookSignals.release().then(
122					function () {
123						return data;
124					},
125					function () {
126						return data;
127					}
128				);
129			}
130
131			return data;
132		} );
133	}
134
135	/**
136	 * Read the current signal state from the cookie.
137	 *
138	 * @return {string|null} `active`, `held`, or `null`.
139	 */
140	function getState() {
141		var val = getCookie( COOKIE_NAME );
142		if ( val === null ) {
143			return null;
144		}
145
146		return val === STATE_ACTIVE ? STATE_ACTIVE : STATE_HELD;
147	}
148
149	window.fbwcsignal = window.fbwcsignal || {};
150	window.fbwcsignal.hold = hold;
151	window.fbwcsignal.release = release;
152	window.fbwcsignal.getState = getState;
153} )();