convertkit / wp-convertkit.php

wp-convertkit.php in Kit (formerly ConvertKit) – Email Newsletter, Email Marketing, Membership, Subscribers and Landing Pages 1.3.8, at wp-convertkit.php

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1	<?php
2	/*
3	Plugin Name: WP ConvertKit
4	Plugin URI: http://convertkit.com/
5	Description: Quickly and easily integrate ConvertKit forms into your site.
6	Version: 1.3.8
7	Author: ConvertKit
8	Author URI: http://convertkit.com/
9	*/
10
11	require_once plugin_dir_path( __FILE__ ) . "/lib/convertkit-api.php";
12	require_once plugin_dir_path( __FILE__ ) . "/lib/integration/wishlist_member.php";
13
14	if(!class_exists('WP_ConvertKit')) {
15	class WP_ConvertKit {
16
17	// Plugin Version
18	const VERSION = '1.3.8';
19
20	// DB Keys
21	const POST_META_KEY = '_wp_convertkit_post_meta';
22	const SETTINGS_NAME = '_wp_convertkit_settings';
23
24	// Page Slugs
25	const SETTINGS_PAGE_SLUG = '_wp_convertkit_settings';
26
27	private static $api;
28
29	// Data Caching
30	private static $cache_period = 0;
31	private static $meta_defaults = null;
32	private static $settings_defaults = array(
33	'api_key' => '',
34	'default_form' => 0,
35	);
36
37	private static $forms_markup = array();
38	private static $landing_pages_markup = array();
39
40	public static function init() {
41	self::add_actions();
42	self::add_filters();
43	self::register_shortcodes();
44
45	self::$cache_period = MINUTE_IN_SECONDS * 10;
46
47	self::_api_connect();
48	}
49
50	private static function add_actions() {
51	if(is_admin()) {
52	add_action('add_meta_boxes_page', array(__CLASS__, 'add_meta_boxes'));
53	add_action('add_meta_boxes_post', array(__CLASS__, 'add_meta_boxes'));
54	} else {
55	add_action('template_redirect', array(__CLASS__, 'page_takeover'));
56	}
57
58	add_action('save_post', array(__CLASS__, 'save_post_meta'), 10, 2);
59	}
60
61	private static function add_filters() {
62	if(!is_admin()) {
63	add_filter('the_content', array(__CLASS__, 'append_form'));
64	}
65
66	add_filter('plugin_action_links_' . plugin_basename(__FILE__), array(__CLASS__, 'add_settings_page_link'));
67	}
68
69	private static function register_shortcodes() {
70	add_shortcode('convertkit', array(__CLASS__, 'shortcode'));
71	}
72
73	// Callbacks
74
75	/// Settings Related
76
77	public static function add_settings_page_link($links) {
78	$settings_link = sprintf('<a href="%s">%s</a>', self::_get_settings_page_link(), __('Settings'));
79
80	return array('settings' => $settings_link) + $links;
81	}
82
83	/// Page / Post Editing
84
85	public static function add_meta_boxes($post) {
86	$forms = self::$api->get_resources('forms');
87	$landing_pages = self::$api->get_resources('landing_pages');
88
89	if(!empty($forms) \|\| ('page' === $post->post_type && !empty($landing_pages))) {
90	add_meta_box('wp-convertkit-meta-box', __('ConvertKit'), array(__CLASS__, 'display_meta_box'), $post->post_type, 'normal');
91	}
92	}
93
94	public static function display_meta_box($post) {
95	$forms = self::$api->get_resources('forms');
96	$landing_pages = self::$api->get_resources('landing_pages');
97
98	$meta = self::_get_meta($post->ID);
99	$settings_link = self::_get_settings_page_link();
100
101	include('views/backend/meta-boxes/meta-box.php');
102	}
103
104	public static function save_post_meta($post_id, $post) {
105	$data = stripslashes_deep($_POST);
106	if(wp_is_post_autosave($post_id) \|\| wp_is_post_revision($post_id) \|\| !isset($data['wp-convertkit-save-meta-nonce']) \|\| !wp_verify_nonce($data['wp-convertkit-save-meta-nonce'], 'wp-convertkit-save-meta')) {
107	return;
108	}
109
110	self::_set_meta($post_id, $data['wp-convertkit']);
111	}
112
113	/// Page / Post Display
114
115	public static function append_form($content) {
116	if(is_singular(array('post')) \|\| is_page()) {
117	$content .= wp_convertkit_get_form_embed(self::_get_meta(get_the_ID()));
118	}
119
120	return $content;
121	}
122
123	public static function page_takeover() {
124	$queried_object = get_queried_object();
125	if(isset($queried_object->post_type) && 'page' === $queried_object->post_type && ($landing_page_url = self::_get_meta($queried_object->ID, 'landing_page'))) {
126	$landing_page = self::$api->get_resource($landing_page_url);
127
128	if(!empty($landing_page)) {
129	echo $landing_page;
130	exit;
131	}
132	}
133
134	}
135
136	/// Shortcodes
137
138	public static function shortcode($attributes, $content = null) {
139	return wp_convertkit_get_form_embed($attributes);
140	}
141
142	// Data Retrieval
143
144	/// Page / Post Meta Data
145
146	private static function _get_meta_defaults() {
147	if(is_null(self::$meta_defaults)) {
148	self::$meta_defaults = array(
149	'form' => -1,
150	'landing_page' => '',
151	);
152	}
153
154	return self::$meta_defaults;
155	}
156
157	private static function _get_meta($post_id, $meta_key = null) {
158	$post_id = empty($post_id) ? get_the_ID() : $post_id;
159
160	$meta = get_post_meta($post_id, self::POST_META_KEY, true);
161	$meta_defaults = self::_get_meta_defaults();
162
163	if(empty($meta)) {
164	$meta = $meta_defaults;
165
166	$old_value = intval(get_post_meta($post_id, '_convertkit_convertkit_form', true));
167	if(0 !== $old_value) {
168	$meta['form'] = $old_value;
169	}
170	}
171
172	$meta = shortcode_atts($meta_defaults, $meta);
173
174	return is_null($meta_key) ? $meta : (isset($meta[$meta_key]) ? $meta[$meta_key] : false);
175	}
176
177	private static function _set_meta($post_id, $meta) {
178	$post_id = empty($post_id) ? get_the_ID() : $post_id;
179
180	update_post_meta($post_id, self::POST_META_KEY, $meta);
181
182	return $meta;
183	}
184
185	/// Settings
186
187	private static function _get_settings($settings_key = null) {
188	$settings = get_option(self::SETTINGS_NAME, self::$settings_defaults);
189
190	return is_null($settings_key) ? $settings : (isset($settings[$settings_key]) ? $settings[$settings_key] : null);
191	}
192
193	/// API
194
195	private static function _api_connect() {
196	$api_key = self::_get_settings('api_key');
197
198	self::$api = new ConvertKitAPI($api_key);
199	}
200
201	// Links
202
203	private static function _get_settings_page_link($query_args = array()) {
204	$query_args = array('page' => self::SETTINGS_PAGE_SLUG) + $query_args;
205
206	return add_query_arg($query_args, admin_url('options-general.php'));
207	}
208
209	// Template Tags
210
211	public static function get_form_embed($attributes) {
212	$attributes = shortcode_atts(array(
213	'form' => -1,
214	), $attributes);
215
216	extract($attributes);
217
218	$form_id = intval(($form < 0) ? self::_get_settings('default_form') : $form);
219	$form = false;
220
221	if ($form_id == 0) {
222	return "";
223	}
224
225	$forms_available = self::$api->get_resources('forms');
226	foreach($forms_available as $form_available) {
227	if($form_available['id'] == $form_id) {
228	$form = $form_available;
229	break;
230	}
231	}
232
233	$form_markup = self::$api->get_resource($form['embed']);
234
235	return $form_markup;
236	}
237	}
238
239	require_once('lib/template-tags.php');
240	WP_ConvertKit::init();
241	}
242
243	include 'admin/settings.php';
244