convertkit / includes / class-convertkit-ajax.php

class-convertkit-ajax.php in Kit (formerly ConvertKit) – Email Newsletter, Email Marketing, Membership, Subscribers and Landing Pages 2.0.2, at includes/class-convertkit-ajax.php

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1	<?php
2	/**
3	* ConvertKit AJAX class.
4	*
5	* @package ConvertKit
6	* @author ConvertKit
7	*/
8
9	/**
10	* Registers AJAX actions for the Plugin.
11	*
12	* @since 1.9.6
13	*/
14	class ConvertKit_AJAX {
15
16	/**
17	* Constructor.
18	*
19	* @since 1.9.6
20	*/
21	public function __construct() {
22
23	add_action( 'wp_ajax_nopriv_convertkit_store_subscriber_id_in_cookie', array( $this, 'store_subscriber_id_in_cookie' ) );
24	add_action( 'wp_ajax_convertkit_store_subscriber_id_in_cookie', array( $this, 'store_subscriber_id_in_cookie' ) );
25
26	add_action( 'wp_ajax_nopriv_convertkit_store_subscriber_email_as_id_in_cookie', array( $this, 'store_subscriber_email_as_id_in_cookie' ) );
27	add_action( 'wp_ajax_convertkit_store_subscriber_email_as_id_in_cookie', array( $this, 'store_subscriber_email_as_id_in_cookie' ) );
28
29	add_action( 'wp_ajax_nopriv_convertkit_tag_subscriber', array( $this, 'tag_subscriber' ) );
30	add_action( 'wp_ajax_convertkit_tag_subscriber', array( $this, 'tag_subscriber' ) );
31
32	}
33
34	/**
35	* Stores the ConvertKit Subscriber's ID in a cookie.
36	*
37	* Typically performed when the user subscribes via a ConvertKit Form on the web site
38	* that is set to "Send subscriber to thank you page", and the Plugin's JavaScript is not
39	* disabled, permitting convertkit.js to run.
40	*
41	* @since 1.9.6
42	*/
43	public function store_subscriber_id_in_cookie() {
44
45	// Check nonce.
46	check_ajax_referer( 'convertkit', 'convertkit_nonce' );
47
48	// Bail if required request parameters not submitted.
49	if ( ! isset( $_REQUEST['subscriber_id'] ) ) {
50	wp_send_json_error( __( 'ConvertKit: Required parameter `subscriber_id` not included in AJAX request.', 'convertkit' ) );
51	}
52
53	// Bail if no subscriber ID provided.
54	$id = absint( sanitize_text_field( $_REQUEST['subscriber_id'] ) );
55	if ( empty( $id ) ) {
56	wp_send_json_error( __( 'ConvertKit: Required parameter `subscriber_id` empty in AJAX request.', 'convertkit' ) );
57	}
58
59	// Get subscriber ID.
60	$subscriber = new ConvertKit_Subscriber();
61	$subscriber_id = $subscriber->validate_and_store_subscriber_id( $id );
62
63	// Bail if an error occured i.e. API hasn't been configured, subscriber ID does not exist in ConvertKit etc.
64	if ( is_wp_error( $subscriber_id ) ) {
65	wp_send_json_error( $subscriber_id->get_error_message() );
66	}
67
68	// Return the subscriber ID.
69	wp_send_json_success(
70	array(
71	'id' => $subscriber_id,
72	)
73	);
74
75	}
76
77	/**
78	* Stores the ConvertKit Subscriber Email's ID in a cookie.
79	*
80	* Typically performed when the user subscribes via a ConvertKit Form on the web site
81	* and the Plugin's JavaScript is not disabled, permitting convertkit.js to run.
82	*
83	* @since 1.9.6
84	*/
85	public function store_subscriber_email_as_id_in_cookie() {
86
87	// Check nonce.
88	check_ajax_referer( 'convertkit', 'convertkit_nonce' );
89
90	// Bail if required request parameters not submitted.
91	if ( ! isset( $_REQUEST['email'] ) ) {
92	wp_send_json_error( __( 'ConvertKit: Required parameter `email` not included in AJAX request.', 'convertkit' ) );
93	}
94	$email = sanitize_text_field( $_REQUEST['email'] );
95
96	// Bail if the email address is empty.
97	if ( empty( $email ) ) {
98	wp_send_json_error( __( 'ConvertKit: Required parameter `email` is empty.', 'convertkit' ) );
99	}
100
101	// Bail if the email address isn't a valid email address.
102	if ( ! filter_var( $email, FILTER_VALIDATE_EMAIL ) ) {
103	wp_send_json_error( __( 'ConvertKit: Required parameter `email` is not an email address.', 'convertkit' ) );
104	}
105
106	// Get subscriber ID.
107	$subscriber = new ConvertKit_Subscriber();
108	$subscriber_id = $subscriber->validate_and_store_subscriber_email( $email );
109
110	// Bail if an error occured i.e. API hasn't been configured, subscriber ID does not exist in ConvertKit etc.
111	if ( is_wp_error( $subscriber_id ) ) {
112	wp_send_json_error( $subscriber_id->get_error_message() );
113	}
114
115	// Return the subscriber ID.
116	wp_send_json_success(
117	array(
118	'id' => $subscriber_id,
119	)
120	);
121
122	}
123
124	/**
125	* Tags a subscriber when their subscriber ID is present in the cookie or URL,
126	* and the Page's ConvertKit Settings specify a Tag.
127	*
128	* @since 1.9.6
129	*/
130	public function tag_subscriber() {
131
132	// Check nonce.
133	check_ajax_referer( 'convertkit', 'convertkit_nonce' );
134
135	// Bail if required request parameters not submitted.
136	if ( ! isset( $_REQUEST['subscriber_id'] ) ) {
137	wp_send_json_error( __( 'ConvertKit: Required parameter `subscriber_id` not included in AJAX request.', 'convertkit' ) );
138	}
139	if ( ! isset( $_REQUEST['tag'] ) ) {
140	wp_send_json_error( __( 'ConvertKit: Required parameter `tag` not included in AJAX request.', 'convertkit' ) );
141	}
142	$subscriber_id = absint( sanitize_text_field( $_REQUEST['subscriber_id'] ) );
143	$tag_id = absint( sanitize_text_field( $_REQUEST['tag'] ) );
144
145	// Bail if no subscriber ID or tag provided.
146	if ( empty( $subscriber_id ) ) {
147	wp_send_json_error( __( 'ConvertKit: Required parameter `subscriber_id` empty in AJAX request.', 'convertkit' ) );
148	}
149	if ( empty( $tag_id ) ) {
150	wp_send_json_error( __( 'ConvertKit: Required parameter `tag` empty in AJAX request.', 'convertkit' ) );
151	}
152
153	// Bail if the API hasn't been configured.
154	$settings = new ConvertKit_Settings();
155	if ( ! $settings->has_api_key_and_secret() ) {
156	wp_send_json_error( __( 'ConvertKit: API Keys not defined in Plugin Settings.', 'convertkit' ) );
157	}
158
159	// Initialize the API.
160	$api = new ConvertKit_API( $settings->get_api_key(), $settings->get_api_secret(), $settings->debug_enabled() );
161
162	// Get subscriber's email address by subscriber ID.
163	$subscriber = $api->get_subscriber_by_id( $subscriber_id );
164
165	// Bail if the subscriber could not be found.
166	if ( is_wp_error( $subscriber ) ) {
167	wp_send_json_error( $subscriber->get_error_message() );
168	}
169
170	// Store the subscriber ID as a cookie.
171	$subscriber = new ConvertKit_Subscriber();
172	$subscriber->set( $subscriber_id );
173
174	// Tag the subscriber with the Post's tag.
175	$tag = $api->tag_subscribe( $tag_id, $subscriber['email_address'] );
176
177	// Bail if an error occured tagging the subscriber.
178	if ( is_wp_error( $tag ) ) {
179	wp_send_json_error( $tag );
180	}
181
182	// Store the subscriber ID as a cookie.
183	setcookie( 'ck_subscriber_id', $subscriber['id'], time() + ( 365 * DAY_IN_SECONDS ), '/' );
184
185	wp_send_json_success( $tag );
186
187	}
188
189	}
190