← All changes | wp-convertkit.php +456 -115 2.2.2 → 1.4.9 View file →

		@@ -1,141 +1,482 @@
1	1	<?php
2	2	/**
3		- * ConvertKit WordPress Plugin.
4		- *
5		- * @package ConvertKit
6		- * @author ConvertKit
7		- *
8		- * @wordpress-plugin
9	3	* Plugin Name: ConvertKit
10	4	* Plugin URI: https://convertkit.com/
11	5	* Description: Quickly and easily integrate ConvertKit forms into your site.
12		- * Version: 2.2.2
	6	+ * Version: 1.4.9
13	7	* Author: ConvertKit
14	8	* Author URI: https://convertkit.com/
15	9	* Text Domain: convertkit
16	10	*/
17	11
18		-// Bail if ConvertKit is alread loaded.
19		-if ( class_exists( 'WP_ConvertKit' ) ) {
20		- return;
21		-}
	12	+require_once plugin_dir_path( __FILE__ ) . '/lib/class-convertkit-api.php';
	13	+require_once plugin_dir_path( __FILE__ ) . '/lib/class-ck-widget-form.php';
	14	+require_once plugin_dir_path( __FILE__ ) . '/lib/integration/class-convertkit-wishlist-integration.php';
	15	+require_once plugin_dir_path( __FILE__ ) . '/lib/integration/class-convertkit-contactform7-integration.php';
22	16
23		-// Define ConverKit Plugin paths and version number.
24		-define( 'CONVERTKIT_PLUGIN_NAME', 'ConvertKit' ); // Used for user-agent in API class.
25		-define( 'CONVERTKIT_PLUGIN_FILE', plugin_basename( __FILE__ ) );
26		-define( 'CONVERTKIT_PLUGIN_URL', plugin_dir_url( __FILE__ ) );
27		-define( 'CONVERTKIT_PLUGIN_PATH', __DIR__ );
28		-define( 'CONVERTKIT_PLUGIN_VERSION', '2.2.2' );
	17	+if ( ! class_exists( 'WP_ConvertKit' ) ) {
	18	+ /**
	19	+ * Class WP_ConvertKit
	20	+ */
	21	+ class WP_ConvertKit {
29	22
30		-// Load shared classes, if they have not been included by another ConvertKit Plugin.
31		-if ( ! class_exists( 'ConvertKit_API' ) ) {
32		- require_once CONVERTKIT_PLUGIN_PATH . '/vendor/convertkit/convertkit-wordpress-libraries/src/class-convertkit-api.php';
33		-}
34		-if ( ! class_exists( 'ConvertKit_Log' ) ) {
35		- require_once CONVERTKIT_PLUGIN_PATH . '/vendor/convertkit/convertkit-wordpress-libraries/src/class-convertkit-log.php';
36		-}
37		-if ( ! class_exists( 'ConvertKit_Resource' ) ) {
38		- require_once CONVERTKIT_PLUGIN_PATH . '/vendor/convertkit/convertkit-wordpress-libraries/src/class-convertkit-resource.php';
39		-}
40		-if ( ! class_exists( 'ConvertKit_Review_Request' ) ) {
41		- require_once CONVERTKIT_PLUGIN_PATH . '/vendor/convertkit/convertkit-wordpress-libraries/src/class-convertkit-review-request.php';
42		-}
	23	+ const VERSION = '1.4.9';
43	24
44		-// Load plugin files that are always required.
45		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/cron-functions.php';
46		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/functions.php';
47		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-wp-convertkit.php';
48		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-ajax.php';
49		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-gutenberg.php';
50		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-output.php';
51		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-output-restrict-content.php';
52		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-post.php';
53		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-preview-output.php';
54		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-resource-forms.php';
55		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-resource-landing-pages.php';
56		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-resource-posts.php';
57		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-resource-products.php';
58		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-resource-tags.php';
59		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-settings.php';
60		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-settings-restrict-content.php';
61		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-setup.php';
62		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-shortcodes.php';
63		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-subscriber.php';
64		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-term.php';
65		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-user.php';
66		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/class-convertkit-widgets.php';
67		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/blocks/class-convertkit-block.php';
68		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/blocks/class-convertkit-block-broadcasts.php';
69		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/blocks/class-convertkit-block-content.php';
70		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/blocks/class-convertkit-block-form-trigger.php';
71		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/blocks/class-convertkit-block-form.php';
72		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/blocks/class-convertkit-block-product.php';
73		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/block-formatters/class-convertkit-block-formatter.php';
74		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/block-formatters/class-convertkit-block-formatter-form-link.php';
75		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/block-formatters/class-convertkit-block-formatter-product-link.php';
76		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/widgets/class-ck-widget-form.php';
	25	+ const POST_META_KEY = '_wp_convertkit_post_meta';
77	26
78		-// Contact Form 7 Integration.
79		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/contactform7/class-convertkit-contactform7.php';
80		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/contactform7/class-convertkit-contactform7-settings.php';
	27	+ const SETTINGS_NAME = '_wp_convertkit_settings';
81	28
82		-// Elementor Integration.
83		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/elementor/class-convertkit-elementor.php';
	29	+ const SETTINGS_PAGE_SLUG = '_wp_convertkit_settings';
84	30
85		-// WishList Member Integration.
86		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/wishlist/class-convertkit-wishlist.php';
87		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/wishlist/class-convertkit-wishlist-settings.php';
	31	+ /**
	32	+ * @var ConvertKit_API
	33	+ */
	34	+ private static $api;
88	35
89		-// WooCommerce Integration.
90		-require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/woocommerce/class-convertkit-woocommerce-product-form.php';
	36	+ /**
	37	+ * @var int Data Caching
	38	+ */
	39	+ private static $cache_period = 0;
91	40
92		-// Load files that are only used in the WordPress Administration interface.
93		-if ( is_admin() ) {
94		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-bulk-edit.php';
95		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-quick-edit.php';
96		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-cache-plugins.php';
97		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-category.php';
98		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-notices.php';
99		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-post.php';
100		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-refresh-resources.php';
101		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-settings.php';
102		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-tinymce.php';
103		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-user.php';
104		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-setup-wizard.php';
105		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-multi-value-field-table.php';
106		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/section/class-convertkit-settings-base.php';
107		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/section/class-convertkit-settings-general.php';
108		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/section/class-convertkit-settings-tools.php';
109		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/setup-wizard/class-convertkit-admin-setup-wizard-plugin.php';
	41	+ /**
	42	+ * @var null
	43	+ */
	44	+ private static $meta_defaults = null;
110	45
111		- // Contact Form 7 Integration.
112		- require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/contactform7/class-convertkit-contactform7-admin-settings.php';
	46	+ /**
	47	+ * @var array
	48	+ */
	49	+ private static $settings_defaults = array(
	50	+ 'api_key' => '',
	51	+ 'default_form' => 0,
	52	+ );
113	53
114		- // WishList Member Integration.
115		- require_once CONVERTKIT_PLUGIN_PATH . '/includes/integrations/wishlist/class-convertkit-wishlist-admin-settings.php';
	54	+ /**
	55	+ * @var array
	56	+ */
	57	+ private static $forms_markup = array();
116	58
117		- // Restrict Content Integration.
118		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-restrict-content.php';
119		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/class-convertkit-admin-settings-restrict-content.php';
120		- require_once CONVERTKIT_PLUGIN_PATH . '/admin/setup-wizard/class-convertkit-admin-setup-wizard-restrict-content.php';
121		-}
	59	+ /** @var array */
	60	+ private static $landing_pages_markup = array();
122	61
123		-// Register Plugin activation and deactivation functions.
124		-register_activation_hook( __FILE__, 'convertkit_plugin_activate' );
125		-add_action( 'wp_insert_site', 'convertkit_plugin_activate_new_site' );
126		-add_action( 'activate_blog', 'convertkit_plugin_activate_new_site' );
127		-register_deactivation_hook( __FILE__, 'convertkit_plugin_deactivate' );
	62	+ /** @var string */
	63	+ private static $forms_version = '6';
128	64
129		-/**
130		- * Main function to return Plugin instance.
131		- *
132		- * @since 1.9.6
133		- */
134		-function WP_ConvertKit() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName
	65	+ /**
	66	+ * Initialize the class
	67	+ */
	68	+ public static function init() {
	69	+ self::add_actions();
	70	+ self::add_filters();
	71	+ self::register_shortcodes();
135	72
136		- return WP_ConvertKit::get_instance();
	73	+ self::$cache_period = MINUTE_IN_SECONDS * 10;
137	74
138		-}
	75	+ self::_api_connect();
	76	+ }
139	77
140		-// Finally, initialize the Plugin.
141		-WP_ConvertKit();
	78	+ /**
	79	+ * Add WP Actions
	80	+ */
	81	+ private static function add_actions() {
	82	+ add_action( 'plugins_loaded', array( __CLASS__, 'load_textdomain' ) );
	83	+ if ( is_admin() ) {
	84	+ add_action( 'add_meta_boxes_page', array( __CLASS__, 'add_meta_boxes' ) );
	85	+ add_action( 'add_meta_boxes_post', array( __CLASS__, 'add_meta_boxes' ) );
	86	+ } else {
	87	+ add_action( 'template_redirect', array( __CLASS__, 'page_takeover' ) );
	88	+ }
	89	+
	90	+ add_action( 'widgets_init', array( __CLASS__, 'ck_register_widgets' ) );
	91	+
	92	+ add_action( 'save_post', array( __CLASS__, 'save_post_meta' ), 10, 2 );
	93	+
	94	+ add_action( 'init', array( __CLASS__, 'upgrade' ) , 10 );
	95	+ }
	96	+
	97	+ /**
	98	+ * Load plugin textdomain
	99	+ */
	100	+ public static function load_textdomain() {
	101	+ load_plugin_textdomain( 'convertkit', false, basename( dirname( __FILE__ ) ) . '/languages/' );
	102	+ }
	103	+
	104	+ /**
	105	+ * Add WP Filters
	106	+ */
	107	+ private static function add_filters() {
	108	+ if ( ! is_admin() ) {
	109	+ add_filter( 'the_content', array( __CLASS__, 'append_form' ) );
	110	+ }
	111	+
	112	+ add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), array( __CLASS__, 'add_settings_page_link' ) );
	113	+ }
	114	+
	115	+ /**
	116	+ * Register ConvertKit shortcodes
	117	+ */
	118	+ private static function register_shortcodes() {
	119	+ add_shortcode( 'convertkit', array( __CLASS__, 'shortcode' ) );
	120	+ }
	121	+
	122	+ /**
	123	+ * Plugin action links callback
	124	+ *
	125	+ * @param $links
	126	+ * @return array
	127	+ */
	128	+ public static function add_settings_page_link( $links ) {
	129	+ $settings_link = sprintf( '<a href="%s">%s</a>', self::_get_settings_page_link(), __( 'Settings', 'convertkit' ) );
	130	+
	131	+ return array(
	132	+ 'settings' => $settings_link,
	133	+ ) + $links;
	134	+ }
	135	+
	136	+ /**
	137	+ * Add Meta Boxes callback
	138	+ *
	139	+ * @param WP_Post $post The current post.
	140	+ */
	141	+ public static function add_meta_boxes( $post ) {
	142	+ $forms = self::$api->get_resources( 'forms' );
	143	+ $landing_pages = self::$api->get_resources( 'landing_pages' );
	144	+
	145	+ if ( ! empty( $forms ) || ( 'page' === $post->post_type && ! empty( $landing_pages ) ) ) {
	146	+ add_meta_box( 'wp-convertkit-meta-box', __( 'ConvertKit', 'convertkit' ), array( __CLASS__, 'display_meta_box' ), $post->post_type, 'normal' );
	147	+ }
	148	+ }
	149	+
	150	+ /**
	151	+ * Metabox callback
	152	+ *
	153	+ * @param $post
	154	+ */
	155	+ public static function display_meta_box( $post ) {
	156	+ $forms = self::$api->get_resources( 'forms' );
	157	+ $landing_pages = self::$api->get_resources( 'landing_pages' );
	158	+
	159	+ $meta = self::_get_meta( $post->ID );
	160	+ $settings_link = self::_get_settings_page_link();
	161	+
	162	+ include( 'views/backend/meta-boxes/meta-box.php' );
	163	+ }
	164	+
	165	+ /**
	166	+ * Save post meta callback
	167	+ *
	168	+ * @param int $post_id Post id.
	169	+ * @param WP_Post $post The post.
	170	+ */
	171	+ public static function save_post_meta( $post_id, $post ) {
	172	+ if ( wp_is_post_autosave( $post_id )
	173	+ || wp_is_post_revision( $post_id )
	174	+ || ! isset( $_POST['wp-convertkit-save-meta-nonce'] ) // WPCS input var okay.
	175	+ || ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_POST['wp-convertkit-save-meta-nonce'] ) ), 'wp-convertkit-save-meta' ) ) { // WPCS input var okay.
	176	+ return;
	177	+ }
	178	+ if ( isset( $_POST['wp-convertkit'] ) ) { // WPCS input var okay.
	179	+ $form = '';
	180	+ if ( isset( $_POST['wp-convertkit']['form'] ) ) { // WPCS input var okay.
	181	+ $form = sanitize_text_field( wp_unslash( $_POST['wp-convertkit']['form'] ) ); // WPCS input var okay.
	182	+ }
	183	+ $landing_page = '';
	184	+ if ( isset( $_POST['wp-convertkit']['landing_page'] ) ) { // WPCS input var okay.
	185	+ $landing_page = sanitize_text_field( wp_unslash( $_POST['wp-convertkit']['landing_page'] ) ); // WPCS input var okay.
	186	+ }
	187	+ $meta = array(
	188	+ 'form' => $form,
	189	+ 'landing_page' => $landing_page,
	190	+ );
	191	+ update_post_meta( $post_id, self::POST_META_KEY, $meta );
	192	+ }
	193	+ }
	194	+
	195	+ /**
	196	+ * Page/Post display callback
	197	+ *
	198	+ * @param string $content The post content.
	199	+ * @return string
	200	+ */
	201	+ public static function append_form( $content ) {
	202	+
	203	+ if ( is_singular( array( 'post' ) ) || is_page() ) {
	204	+
	205	+ $attributes = self::_get_meta( get_the_ID() );
	206	+
	207	+ $form_id = 0;
	208	+
	209	+ if ( isset( $attributes['form'] ) && ( 0 < $attributes['form'] ) ) {
	210	+ $form_id = $attributes['form'];
	211	+ } else {
	212	+ if ( '-1' === $attributes['form'] ) {
	213	+ $form_id = self::_get_settings( 'default_form' );
	214	+ }
	215	+ }
	216	+
	217	+ if ( 0 < $form_id ) {
	218	+ $url = add_query_arg( array(
	219	+ 'api_key' => self::_get_settings( 'api_key' ),
	220	+ 'v' => self::$forms_version,
	221	+ ),
	222	+ 'https://forms.convertkit.com/' . $form_id . '.html'
	223	+ );
	224	+
	225	+ $form_markup = self::$api->get_resource( $url );
	226	+ $content .= $form_markup;
	227	+ }
	228	+ }
	229	+
	230	+ return $content;
	231	+ }
	232	+
	233	+ /**
	234	+ * Replace page content if a landing_page is set
	235	+ */
	236	+ public static function page_takeover() {
	237	+ $queried_object = get_queried_object();
	238	+ if ( isset( $queried_object->post_type )
	239	+ && 'page' === $queried_object->post_type ) {
	240	+
	241	+ $landing_page_url = self::_get_meta( $queried_object->ID, 'landing_page' );
	242	+
	243	+ $landing_page = self::$api->get_resource( $landing_page_url );
	244	+
	245	+ if ( ! empty( $landing_page ) ) {
	246	+ echo $landing_page; // WPCS: XSS ok.
	247	+ exit;
	248	+ }
	249	+ }
	250	+
	251	+ }
	252	+
	253	+ /**
	254	+ * Register widget.
	255	+ */
	256	+ public static function ck_register_widgets() {
	257	+ register_widget( 'CK_Widget_Form' );
	258	+ }
	259	+
	260	+ /**
	261	+ * Shortcode callback
	262	+ *
	263	+ * @param array $attributes Shortcode attributes.
	264	+ * @param null $content
	265	+ * @return mixed|void
	266	+ */
	267	+ public static function shortcode( $attributes, $content = null ) {
	268	+
	269	+ if ( isset( $attributes['id'] ) ) {
	270	+ $form_id = $attributes['id'];
	271	+ $url = add_query_arg( array(
	272	+ 'api_key' => self::_get_settings( 'api_key' ),
	273	+ 'v' => self::$forms_version,
	274	+ ),
	275	+ 'https://forms.convertkit.com/' . $form_id . '.html'
	276	+ );
	277	+ } elseif ( isset( $attributes['form'] ) ) {
	278	+ $form_id = $attributes['form'];
	279	+ $url = add_query_arg( array(
	280	+ 'k' => self::_get_settings( 'api_key' ),
	281	+ 'v' => '2',
	282	+ ),
	283	+ 'https://api.convertkit.com/forms/' . $form_id . '/embed'
	284	+ );
	285	+ } else {
	286	+ $form_id = self::_get_settings( 'default_form' );
	287	+ $url = add_query_arg( array(
	288	+ 'api_key' => self::_get_settings( 'api_key' ),
	289	+ 'v' => self::$forms_version,
	290	+ ),
	291	+ 'https://forms.convertkit.com/' . $form_id . '.html'
	292	+ );
	293	+ }
	294	+
	295	+ if ( 0 < $form_id ) {
	296	+ $form_markup = self::$api->get_resource( $url );
	297	+ } else {
	298	+ $form_markup = '';
	299	+ }
	300	+
	301	+ return apply_filters( 'wp_convertkit_get_form_embed', $form_markup, $attributes );
	302	+ }
	303	+
	304	+ /**
	305	+ * Retrieve meta
	306	+ *
	307	+ * @return array|null
	308	+ */
	309	+ private static function _get_meta_defaults() {
	310	+ if ( is_null( self::$meta_defaults ) ) {
	311	+ self::$meta_defaults = array(
	312	+ 'form' => '-1',
	313	+ 'landing_page' => '',
	314	+ );
	315	+ }
	316	+
	317	+ return self::$meta_defaults;
	318	+ }
	319	+
	320	+ /**
	321	+ * Get selected post meta
	322	+ *
	323	+ * @param int $post_id Post ID.
	324	+ * @param null $meta_key Key string to get.
	325	+ *
	326	+ * @return array|bool
	327	+ */
	328	+ private static function _get_meta( $post_id, $meta_key = null ) {
	329	+ $post_id = empty( $post_id ) ? get_the_ID() : $post_id;
	330	+
	331	+ $meta = get_post_meta( $post_id, self::POST_META_KEY, true );
	332	+ $meta_defaults = self::_get_meta_defaults();
	333	+
	334	+ if ( empty( $meta ) ) {
	335	+ $meta = $meta_defaults;
	336	+
	337	+ $old_value = intval( get_post_meta( $post_id, '_convertkit_convertkit_form', true ) );
	338	+ if ( 0 !== $old_value ) {
	339	+ $meta['form'] = $old_value;
	340	+ }
	341	+ }
	342	+
	343	+ $meta = shortcode_atts( $meta_defaults, $meta );
	344	+
	345	+ return is_null( $meta_key ) ? $meta : ( isset( $meta[ $meta_key ] ) ? $meta[ $meta_key ] : false );
	346	+ }
	347	+
	348	+ /**
	349	+ * Get plugin settings
	350	+ *
	351	+ * @param null $settings_key
	352	+ * @return mixed|null|void
	353	+ */
	354	+ private static function _get_settings( $settings_key = null ) {
	355	+ $settings = get_option( self::SETTINGS_NAME, self::$settings_defaults );
	356	+
	357	+ return is_null( $settings_key ) ? $settings : ( isset( $settings[ $settings_key ] ) ? $settings[ $settings_key ] : null);
	358	+ }
	359	+
	360	+ /**
	361	+ * Get instance of ConvertKitAPI
	362	+ */
	363	+ private static function _api_connect() {
	364	+ $api_key = self::_get_settings( 'api_key' );
	365	+ $api_secret = self::_get_settings( 'api_secret' );
	366	+ $debug = self::_get_settings( 'debug' );
	367	+
	368	+ self::$api = new ConvertKit_API( $api_key, $api_secret, $debug );
	369	+ }
	370	+
	371	+ /**
	372	+ * Get instance of the CK API
	373	+ *
	374	+ * @return ConvertKit_API
	375	+ */
	376	+ public static function get_api() {
	377	+ return self::$api;
	378	+ }
	379	+
	380	+ /**
	381	+ * Get ConvertKit API key
	382	+ *
	383	+ * @return mixed|null|void
	384	+ */
	385	+ public static function get_api_key() {
	386	+ return self::_get_settings( 'api_key' );
	387	+ }
	388	+
	389	+ /**
	390	+ * @return string
	391	+ */
	392	+ public static function get_forms_version() {
	393	+ return self::$forms_version;
	394	+ }
	395	+
	396	+ /**
	397	+ * Get link to the plugin settings page
	398	+ *
	399	+ * @param array $query_args Args to add to URL.
	400	+ * @return string
	401	+ */
	402	+ private static function _get_settings_page_link( $query_args = array() ) {
	403	+ $query_args = array(
	404	+ 'page' => self::SETTINGS_PAGE_SLUG,
	405	+ ) + $query_args;
	406	+
	407	+ return add_query_arg( $query_args, admin_url( 'options-general.php' ) );
	408	+ }
	409	+
	410	+ /**
	411	+ * Run version specific upgrade.
	412	+ */
	413	+ public static function upgrade() {
	414	+
	415	+ $current_version = get_option( 'convertkit_version' );
	416	+
	417	+ if ( ! $current_version ) {
	418	+ // Run 1.4.1 upgrade.
	419	+ $settings = self::_get_settings();
	420	+
	421	+ if ( isset( $settings['api_key'] ) ) {
	422	+ // Get all posts and pages to track what has been updated.
	423	+ $posts = get_option( '_wp_convertkit_upgrade_posts' );
	424	+
	425	+ if ( ! $posts ) {
	426	+
	427	+ $args = array(
	428	+ 'post_type' => array( 'post', 'page' ),
	429	+ 'fields' => 'ids',
	430	+ );
	431	+
	432	+ $result = new WP_Query( $args );
	433	+ if ( ! is_wp_error( $result ) ) {
	434	+ $posts = $result->posts;
	435	+ update_option( '_wp_convertkit_upgrade_posts', $posts );
	436	+ }
	437	+ }
	438	+
	439	+ // Get form mappings.
	440	+ $mappings = self::$api->get_resources( 'subscription_forms' );
	441	+
	442	+ // 1. Update global form. Set 'api_version' so this is only done once.
	443	+ if ( ! isset( $settings['api_version'] ) ) {
	444	+ $old_form_id = $settings['default_form'];
	445	+ $settings['default_form'] = isset( $mappings[ $old_form_id ] ) ? $mappings[ $old_form_id ] : 0;
	446	+ $settings['api_version'] = 'v3';
	447	+ update_option( self::SETTINGS_NAME, $settings );
	448	+ }
	449	+
	450	+ // 2. Scan posts/pages for _wp_convertkit_post_meta and update IDs
	451	+ // Scan content for shortcode and update
	452	+ // Remove page_id from posts array after page is updated.
	453	+ foreach ( $posts as $key => $post_id ) {
	454	+ $post_settings = get_post_meta( $post_id, '_wp_convertkit_post_meta', true );
	455	+
	456	+ if ( isset( $post_settings['form'] ) && ( 0 < $post_settings['form'] ) ) {
	457	+ $post_settings['form'] = isset( $mappings[ $post_settings['form'] ] ) ? $mappings[ $post_settings['form'] ] : 0;
	458	+ }
	459	+ if ( isset( $post_settings['landing_page'] ) && ( 0 < $post_settings['landing_page'] ) ) {
	460	+ $post_settings['landing_page'] = isset( $mappings[ $post_settings['landing_page'] ] ) ? $mappings[ $post_settings['landing_page'] ] : 0;
	461	+ }
	462	+ update_post_meta( $post_id, '_wp_convertkit_post_meta', $post_settings );
	463	+ unset( $posts[ $key ] );
	464	+ update_option( '_wp_convertkit_upgrade_posts', $posts );
	465	+ }
	466	+
	467	+ // Done scanning posts, upgrade complete.
	468	+ if ( empty( $posts ) ) {
	469	+ update_option( 'convertkit_version', self::VERSION );
	470	+ delete_option( '_wp_convertkit_upgrade_posts' );
	471	+ }
	472	+ } else {
	473	+ update_option( 'convertkit_version', self::VERSION );
	474	+ } // End if().
	475	+ } // End if().
	476	+ }
	477	+ }
	478	+
	479	+ WP_ConvertKit::init();
	480	+} // End if().
	481	+
	482	+include 'admin/class-convertkit-settings.php';