notifier / includes / class-notifier.php

class-notifier.php in WANotifier for Forms and Actions 0.1.1, at includes/class-notifier.php

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1	<?php
2	/**
3	* The core plugin class.
4	*
5	* @package Notifier
6	*/
7	class Notifier {
8	/**
9	* The single instance of the class.
10	*/
11	protected static $_instance = null;
12
13	/**
14	* Notifier Constructor.
15	*/
16	public function __construct() {
17	$this->define_constants();
18	$this->includes();
19	$this->init_hooks();
20	}
21
22	/**
23	* Define Constants.
24	*/
25	private function define_constants() {
26	$this->define( 'NOTIFIER_VERSION', '0.1.1' );
27	$this->define( 'NOTIFIER_NAME', 'notifier' );
28	$this->define( 'NOTIFIER_PREFIX', 'notifier_' );
29	$this->define( 'NOTIFIER_URL', trailingslashit( plugins_url( '', dirname(__FILE__) ) ) );
30	$this->define( 'NOTIFIER_WA_API_VERSION', 'v14.0' );
31	$this->define( 'NOTIFIER_WA_API_URL', 'https://graph.facebook.com/' . NOTIFIER_WA_API_VERSION . '/' );
32	}
33
34	/**
35	* Define constant if not already set.
36	*
37	* @param string $name Constant name.
38	* @param string\|bool $value Constant value.
39	*/
40	private function define( $name, $value ) {
41	if ( ! defined( $name ) ) {
42	define( $name, $value );
43	}
44	}
45
46	/**
47	* Main Notifier Instance.
48	*
49	* @return Notifier instance.
50	*/
51	public static function get_instance() {
52	if ( is_null( self::$_instance ) ) {
53	self::$_instance = new self();
54	}
55	return self::$_instance;
56	}
57
58	/**
59	* Include required core files used in admin and on the frontend.
60	*/
61	private function includes() {
62	// Libraries
63	require_once NOTIFIER_PATH . 'libraries/action-scheduler/action-scheduler.php';
64
65	// Functions
66	require_once NOTIFIER_PATH . 'includes/functions/functions-notifier-helpers.php';
67	require_once NOTIFIER_PATH . 'includes/functions/functions-notifier-meta-box-fields.php';
68
69	// Classes
70	require_once NOTIFIER_PATH . 'includes/classes/class-notifier-admin-notices.php';
71	require_once NOTIFIER_PATH . 'includes/classes/class-notifier-dashboard.php';
72	require_once NOTIFIER_PATH . 'includes/classes/class-notifier-message-templates.php';
73	require_once NOTIFIER_PATH . 'includes/classes/class-notifier-contacts.php';
74	require_once NOTIFIER_PATH . 'includes/classes/class-notifier-notifications.php';
75	require_once NOTIFIER_PATH . 'includes/classes/class-notifier-notification-triggers.php';
76	require_once NOTIFIER_PATH . 'includes/classes/class-notifier-settings.php';
77	}
78
79	/**
80	* Hook into actions and filters.
81	*/
82	private function init_hooks() {
83	register_activation_hook ( NOTIFIER_FILE, array( $this, 'install') );
84
85	add_action( 'plugins_loaded', array( 'Notifier_Dashboard', 'init' ) );
86	add_action( 'plugins_loaded', array( 'Notifier_Message_Templates', 'init' ) );
87	add_action( 'plugins_loaded', array( 'Notifier_Contacts', 'init' ) );
88	add_action( 'plugins_loaded', array( 'Notifier_Notifications', 'init' ) );
89	add_action( 'plugins_loaded', array( 'Notifier_Notification_Triggers', 'init' ) );
90	add_action( 'plugins_loaded', array( 'Notifier_Settings', 'init' ) );
91	add_action( 'plugins_loaded', array( $this, 'maybe_include_woocoomerce_class' ) );
92
93	add_filter( 'init', array( $this , 'handle_webhook_requests') );
94
95	add_action( 'admin_enqueue_scripts', array( $this , 'admin_scripts') );
96	add_action( 'in_admin_header', array( $this , 'embed_page_header' ) );
97
98	add_action( 'removable_query_args', array( $this , 'remove_admin_query_args') );
99
100	add_action( 'admin_footer', array($this, 'add_admin_html_templates') );
101	}
102
103	/**
104	* Setup during plugin activation
105	*/
106	public function install() {
107	$verify_token = get_option(NOTIFIER_PREFIX . 'verify_token');
108	if (!$verify_token) {
109	$bytes = random_bytes(20);
110	$verify_token = NOTIFIER_NAME . '-' . substr(bin2hex($bytes), 0, 10);
111	update_option(NOTIFIER_PREFIX . 'verify_token', $verify_token);
112	}
113	}
114
115	/**
116	* Check if plugin's page
117	*/
118	public static function is_notifier_page() {
119	$current_screen = get_current_screen();
120	if ( strpos($current_screen->id, NOTIFIER_NAME) !== false) {
121	return true;
122	}
123
124	$plugin_ctps = array( 'wa_message_template', 'wa_contact', 'wa_notification' );
125	if ( '' !== $current_screen->post_type && in_array( $current_screen->post_type, $plugin_ctps ) ) {
126	return true;
127	}
128
129	return false;
130	}
131
132	/**
133	* Add admin scripts and styles
134	*/
135	public function admin_scripts () {
136	if (!self::is_notifier_page()) {
137	return;
138	}
139
140	// Select2
141	wp_enqueue_script(
142	NOTIFIER_NAME . '-select2-js',
143	NOTIFIER_URL . 'assets/js/select2.min.js',
144	array('jquery'),
145	NOTIFIER_VERSION,
146	true
147	);
148
149	// Date / time picker
150	wp_enqueue_script( 'jquery-ui-datepicker' );
151	wp_enqueue_script(
152	NOTIFIER_NAME . '-timepicker-addon',
153	NOTIFIER_URL . 'assets/js/jquery-ui-timepicker-addon.min.js',
154	array( 'jquery-ui-datepicker' ),
155	NOTIFIER_VERSION,
156	true
157	);
158
159	// Admin JS file
160	wp_enqueue_script(
161	NOTIFIER_NAME . '-admin-js',
162	NOTIFIER_URL . 'assets/js/admin.js',
163	array('jquery'),
164	NOTIFIER_VERSION,
165	true
166	);
167	wp_localize_script(
168	NOTIFIER_NAME . '-admin-js',
169	'waNotifier',
170	apply_filters( 'notifier_js_variables', array('ajaxurl' => admin_url( 'admin-ajax.php' ) ) )
171	);
172
173	// Media upload library
174	wp_enqueue_media();
175
176	// Styles
177	wp_enqueue_style(
178	NOTIFIER_NAME . '-admin-css',
179	NOTIFIER_URL . 'assets/css/admin.css',
180	null,
181	NOTIFIER_VERSION
182	);
183	}
184
185	/**
186	* Set up a div for the header embed to render into.
187	* The initial contents here are meant as a place loader for when the PHP page initialy loads.
188	*/
189	public static function embed_page_header() {
190	if (!self::is_notifier_page()) {
191	return;
192	}
193	$current_screen = get_current_screen();
194	$cpt = ( '' !== $current_screen->post_type) ? $current_screen->post_type : '';
195	$tax = ( '' !== $current_screen->taxonomy) ? $current_screen->taxonomy : '';
196	?>
197	<div id="notifier-admin-header" data-post-type="<?php echo esc_attr($cpt); ?>">
198	<div class="notifier-admin-header-content">
199	<div class="header-page-title w-30">
200	<h2><?php echo esc_attr(get_admin_page_title()); ?></h2>
201	</div>
202	<div class="header-menu-items w-40 d-flex justify-content-center">
203	<?php
204	if ( 'wa_contact' == $cpt ) {
205	?>
206	<ul>
207	<li>
208	<a class="<?php echo ('wa_contact_list' !== $tax && 'wa_contact_tag' !== $tax) ? 'active' : ''; ?>" href="<?php echo esc_url( admin_url('edit.php?post_type=wa_contact') ); ?>" class="">Contacts</a>
209	</li>
210	<li>
211	<a class="<?php echo ('wa_contact_list' == $tax) ? 'active' : ''; ?>" href="<?php echo esc_url( admin_url('edit-tags.php?taxonomy=wa_contact_list&post_type=wa_contact') ); ?>">Lists</a>
212	</li>
213	<li>
214	<a class="<?php echo ('wa_contact_tag' == $tax) ? 'active' : ''; ?>" href="<?php echo esc_url( admin_url('edit-tags.php?taxonomy=wa_contact_tag&post_type=wa_contact') ); ?>">Tags</a>
215	</li>
216	</ul>
217	<?php
218	}
219	?>
220	</div>
221	<div class="header-action-links w-30 d-flex justify-content-end">
222	<span class="header-version">Version: <?php echo esc_html(NOTIFIER_VERSION); ?> (beta)</span>
223	<a href="mailto:ram@fantastech.co?subject=%5BWA%20Notifier%5D%20Help%20Needed%20on<?php echo esc_url(get_site_url()); ?>">Help</a>
224	<a href="admin.php?page=notifier&show=disclaimer">Disclaimer</a>
225	</div>
226	</div>
227	</div>
228	<?php
229	}
230
231	/**
232	* Handle response from Whatsapp
233	*/
234	public static function handle_webhook_requests () {
235	if ( ! isset($_GET['notifier']) ) {
236	return;
237	}
238
239	if ( ! isset($_POST) ) {
240	return;
241	}
242
243	$hub_mode = isset($_GET['hub_mode']) ? sanitize_text_field( wp_unslash( $_GET['hub_mode'] ) ) : '';
244	$hub_verify_token = isset($_GET['hub_verify_token']) ? sanitize_text_field( wp_unslash( $_GET['hub_verify_token'] ) ) : '';
245	$hub_challenge = isset($_GET['hub_challenge']) ? sanitize_text_field( wp_unslash( $_GET['hub_challenge'] ) ) : '';
246
247	/* Validate WhastApp API webbook */
248	if ( 'subscribe' === $hub_mode ) {
249	$verify_token = get_option(NOTIFIER_PREFIX . 'verify_token');
250	if ($hub_verify_token == $verify_token) {
251	echo esc_html($hub_challenge);
252	}
253	}
254
255	exit;
256	}
257
258	/**
259	* For sending requests to Cloud API
260	*/
261	public static function wa_cloud_api_request ( $endpoint, $args = array(), $method = 'POST', $headers = array() ) {
262	$phone_number_id = get_option('notifier_phone_number_id');
263	$request_url = NOTIFIER_WA_API_URL . $phone_number_id . '/' . untrailingslashit($endpoint);
264	return self::send_api_request($request_url, $args, $method, $headers);
265	}
266
267	/**
268	* For sending requests to WA Business API
269	*/
270	public static function wa_business_api_request ( $endpoint, $args = array(), $method = 'POST', $headers = array() ) {
271	$business_account_id = get_option('notifier_business_account_id');
272	$request_url = NOTIFIER_WA_API_URL . $business_account_id . '/' . untrailingslashit($endpoint);
273	return self::send_api_request($request_url, $args, $method, $headers);
274	}
275
276	/**
277	* For sending graph api requests
278	*/
279	public static function wa_graph_api_request ( $endpoint, $args = array(), $method = 'POST', $headers = array() ) {
280	$request_url = NOTIFIER_WA_API_URL . untrailingslashit($endpoint);
281	return self::send_api_request($request_url, $args, $method, $headers);
282	}
283
284	/**
285	* For sending API requests
286	*/
287	private static function send_api_request ( $request_url, $args, $method, $headers ) {
288	$permanent_access_token = get_option('notifier_permanent_access_token');
289	$headers = wp_parse_args($headers, array(
290	'Authorization' => 'Bearer ' . $permanent_access_token
291	));
292	$request_args = array(
293	'method' => $method,
294	'headers' => $headers,
295	'timeout' => 120,
296	'body' => $args
297	);
298	$response = wp_remote_request( $request_url, $request_args);
299	if ( is_wp_error( $response ) ) {
300	error_log( $response->get_error_message() );
301	return false;
302	} elseif (isset($response->error)) {
303	error_log($response->error_user_title . ' - ' . $response->eerror_user_msg);
304	return json_decode($response_body);
305	} else {
306	$response_body = wp_remote_retrieve_body( $response );
307	return json_decode($response_body);
308	}
309	}
310
311	/**
312	* For uploading media to WhatsApp
313	*/
314	public static function wa_cloud_api_upload_media($attachment_id) {
315	$file_path = get_attached_file($attachment_id);
316	$file_size = filesize($file_path);
317
318	if (!$file_path) {
319	return;
320	}
321
322	$file_args = array (
323	'file_length' => $file_size,
324	'file_type' => get_post_mime_type($attachment_id)
325	);
326
327	$permanent_access_token = get_option('notifier_permanent_access_token');
328
329	// Create session ID for upload
330	$upload_session = self::wa_graph_api_request('app/uploads', $file_args);
331	if (!isset($upload_session->id)) {
332	error_log('Error creating WhatsApp image upload session: ' . $upload_session);
333	return false;
334	}
335
336	// Upload the file
337	$file = @fopen( $file_path, 'r' );
338	$file_data = fread( $file, $file_size );
339
340	$upload_headers = array(
341	'Authorization' => 'OAuth ' . $permanent_access_token,
342	'file_offset' => 0,
343	'Connection' => 'Close',
344	'Host' => 'graph.facebook.com',
345	'Content-Type' => 'multipart/form-data'
346	);
347
348	$upload_handle = self::wa_graph_api_request( $upload_session->id, $file_data, null, $upload_headers );
349	if (!isset($upload_handle->h)) {
350	error_log('Error while uploading profile image: ' . $upload_handle);
351	return false;
352	}
353
354	return $upload_handle->h;
355	}
356
357	/**
358	* Remove query args from WP backend
359	*/
360	public static function remove_admin_query_args ($args) {
361	$remove_args = array('wa_import_count', 'wa_import_skipped', 'wa_contacts_import', 'import_contacts_from_users', 'refresh_status');
362	return array_merge($args, $remove_args);
363	}
364
365	/**
366	* Load Woocommerce class if it's present is activated
367	*/
368	public static function maybe_include_woocoomerce_class () {
369	if ( class_exists( 'WooCommerce' ) ) {
370	require_once NOTIFIER_PATH . 'includes/classes/class-notifier-woocommerce.php';
371	Notifier_Woocommerce::init();
372	}
373	}
374
375	/**
376	* Add admin html templates to footer
377	*/
378	public static function add_admin_html_templates () {
379	if (!self::is_notifier_page()) {
380	return;
381	}
382
383	$templates = apply_filters('notifier_admin_html_templates', array());
384
385	if (count($templates) == 0) {
386	return;
387	}
388
389	echo '<div class="notifier-templates">';
390	foreach ($templates as $template) {
391	$file_path = NOTIFIER_PATH . '/views/templates/admin-' . $template . '.php';
392	if ( ! file_exists($file_path) ) {
393	continue;
394	}
395	echo '<template id="notifier-template-' . esc_attr($template) . '">';
396	require_once $file_path;
397	echo '</template>';
398	}
399	echo '</div>';
400	}
401
402	}
403