igen-seo-api / igen-seo-api.php

igen-seo-api.php in iGen SEO 1.3.21, at igen-seo-api.php

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1	<?php
2	/**
3	* Plugin Name: iGen SEO
4	* Description: Connect WordPress to iGen SEO for publishing, IndexNow, and SEO metadata aligned with Yoast SEO, Rank Math, or All in One SEO.
5	* Version: 1.3.21
6	* Author: IGen Team
7	* License: GPLv2 or later
8	* License URI: https://www.gnu.org/licenses/gpl-2.0.html
9	* Text Domain: igen-seo-api
10	* Domain Path: /languages
11	* Requires at least: 5.0
12	* Tested up to: 6.8
13	* Requires PHP: 7.4
14	*/
15
16	// Prevent direct access
17	if ( ! defined( 'ABSPATH' ) ) {
18	exit;
19	}
20
21	define( 'IGEN_SEO_API_VERSION', '1.3.21' );
22	define( 'IGEN_SEO_API_PLUGIN_FILE', __FILE__ );
23
24	/**
25	* Load translations from /languages (e.g. igen-seo-api-zh_TW.mo).
26	*
27	* @return void
28	*/
29	function igen_seo_api_load_textdomain() {
30	load_plugin_textdomain(
31	'igen-seo-api',
32	false,
33	dirname( plugin_basename( IGEN_SEO_API_PLUGIN_FILE ) ) . '/languages'
34	);
35	}
36	add_action( 'plugins_loaded', 'igen_seo_api_load_textdomain' );
37
38	/**
39	* Register Yoast SEO meta fields for REST API access
40	*
41	* This function registers Yoast SEO meta fields to make them accessible
42	* through the WordPress REST API for reading and writing operations.
43	*
44	* @since 1.0.0
45	*/
46	function igen_register_yoast_meta_fields() {
47	// Define supported post types
48	$post_types = array( 'page', 'post' );
49
50	// Define Yoast SEO meta fields to register
51	$fields = array(
52	'_yoast_wpseo_title', // SEO title
53	'_yoast_wpseo_metadesc', // Meta description
54	'_yoast_wpseo_focuskw' // Focus keyword
55	);
56
57	// Register meta fields for each post type
58	foreach ( $post_types as $post_type ) {
59	foreach ( $fields as $field ) {
60	register_post_meta( $post_type, $field, array(
61	'type' => 'string',
62	'single' => true,
63	'show_in_rest' => true,
64	'auth_callback' => 'igen_meta_auth_callback',
65	'description' => sprintf(
66	// translators: %s is the field name (title, metadesc, or focuskw)
67	__( 'Yoast SEO %s field', 'igen-seo-api' ),
68	ucfirst( str_replace( '_yoast_wpseo_', '', $field ) )
69	),
70	) );
71	}
72	}
73	}
74
75	/**
76	* Authentication callback for meta fields
77	*
78	* @since 1.0.0
79	* @return bool True if user can edit posts, false otherwise
80	*/
81	function igen_meta_auth_callback() {
82	return current_user_can( 'edit_posts' );
83	}
84
85	// Hook the registration function to init
86	add_action( 'init', 'igen_register_yoast_meta_fields' );
87
88	/**
89	* Check if Yoast SEO plugin is active
90	*
91	* @since 1.0.0
92	* @return bool True if Yoast SEO is active, false otherwise
93	*/
94	function igen_is_yoast_seo_active() {
95	if ( ! function_exists( 'is_plugin_active' ) ) {
96	require_once ABSPATH . 'wp-admin/includes/plugin.php';
97	}
98	return is_plugin_active( 'wordpress-seo/wp-seo.php' ) \|\|
99	is_plugin_active( 'wordpress-seo-premium/wp-seo-premium.php' );
100	}
101
102	/**
103	* Whether Rank Math SEO is active (free or common Pro bootstrap).
104	*
105	* @return bool
106	*/
107	function igen_is_rank_math_active() {
108	if ( ! function_exists( 'is_plugin_active' ) ) {
109	require_once ABSPATH . 'wp-admin/includes/plugin.php';
110	}
111	return is_plugin_active( 'seo-by-rank-math/rank-math.php' ) \|\|
112	is_plugin_active( 'seo-by-rank-math-pro/rank-math-pro.php' );
113	}
114
115	/**
116	* Whether All in One SEO (free or Pro) is active.
117	*
118	* @return bool
119	*/
120	function igen_is_aioseo_active() {
121	if ( ! function_exists( 'is_plugin_active' ) ) {
122	require_once ABSPATH . 'wp-admin/includes/plugin.php';
123	}
124	return is_plugin_active( 'all-in-one-seo-pack/all_in_one_seo_pack.php' ) \|\|
125	is_plugin_active( 'all-in-one-seo-pack-pro/all_in_one_seo_pack.php' ) \|\|
126	is_plugin_active( 'aioseo-pro/aioseo-pro.php' );
127	}
128
129	/**
130	* Display admin notice if Yoast SEO is not active
131	*
132	* @since 1.0.0
133	*/
134	function igen_yoast_seo_admin_notice() {
135	if ( ! igen_is_yoast_seo_active() ) {
136	?>
137	<div class="notice notice-warning is-dismissible">
138	<p>
139	<strong><?php esc_html_e( 'iGen SEO', 'igen-seo-api' ); ?>:</strong>
140	<?php esc_html_e( 'This plugin requires Yoast SEO to be installed and activated.', 'igen-seo-api' ); ?>
141	<a href="<?php echo esc_url( admin_url( 'plugin-install.php?s=yoast+seo&tab=search&type=term' ) ); ?>">
142	<?php esc_html_e( 'Install Yoast SEO', 'igen-seo-api' ); ?>
143	</a>
144	</p>
145	</div>
146	<?php
147	}
148	}
149	add_action( 'admin_notices', 'igen_yoast_seo_admin_notice' );
150
151	/**
152	* Only register meta fields if Yoast SEO is active
153	*
154	* @since 1.0.0
155	*/
156	function igen_register_yoast_meta_fields_safe() {
157	if ( ! igen_is_yoast_seo_active() ) {
158	return;
159	}
160
161	igen_register_yoast_meta_fields();
162	}
163	remove_action( 'init', 'igen_register_yoast_meta_fields' );
164	add_action( 'init', 'igen_register_yoast_meta_fields_safe' );
165
166	/**
167	* Plugin activation hook
168	*
169	* @since 1.0.0
170	*/
171	function igen_wordpress_activate() {
172	// Flush rewrite rules on activation
173	flush_rewrite_rules();
174	}
175	register_activation_hook( __FILE__, 'igen_wordpress_activate' );
176
177	/**
178	* Plugin deactivation hook
179	*
180	* @since 1.0.0
181	*/
182	function igen_wordpress_deactivate() {
183	// Flush rewrite rules on deactivation
184	flush_rewrite_rules();
185	}
186	register_deactivation_hook( __FILE__, 'igen_wordpress_deactivate' );
187
188	require_once plugin_dir_path( __FILE__ ) . 'includes/class-igen-seo-connector.php';
189	new IGen_SEO_Connector( IGEN_SEO_API_PLUGIN_FILE );
190