subscribers-com / subscribers.php

subscribers.php in Subscribers – Free Web Push Notifications 1.2, at subscribers.php

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1	<?php
2	/*
3	Plugin Name: Subscribers.com
4	Plugin URI: https://subscribers.com/
5	Description: Subscribers.com lets you send push notifications from your desktop or mobile website to your users.
6	Simply enable the plugin and start collecting subscribers for your Subscribers account.
7	Visit <a href="https://subscribers.com/">Subscribers</a> for more details.
8	Author: Subscribers.com
9	Version: 1.2
10	screenshot.png
11	subscribers.php
12	Author URI: https://subscribers.com
13
14	This relies on the actions being present in the themes header.php and footer.php
15	* header.php code before the closing </head> tag
16	* wp_head();
17	*
18	*/
19
20	//------------------------------------------------------------------------//
21	//---Config---------------------------------------------------------------//
22	//------------------------------------------------------------------------//
23
24	require_once("config.php");
25
26	$subscribers_embed_script = <<<HTML
27	<!-- Start Subscriber Embed Code -->
28	<script type="text/javascript">
29	var subscribersSiteId = 'SUBSCRIBER_ID';
30	var subscribersServiceWorkerPath = '/?firebase-messaging-sw';
31	</script>
32	<script type="text/javascript" src="https://$subscribers_cdn_host/assets/subscribers.js"></script>
33	<!-- End Subscriber Embed Code -->
34	HTML;
35
36	//------------------------------------------------------------------------//
37	//---Hook-----------------------------------------------------------------//
38	//------------------------------------------------------------------------//
39	add_action( 'wp_footer', 'subscribers_headercode', 1 );
40	add_action( 'admin_menu', 'subscribers_plugin_menu' );
41	add_action( 'admin_init', 'subscribers_register_mysettings' );
42	add_action( 'admin_notices', 'subscribers_warn_nosettings' );
43
44	//------------------------------------------------------------------------//
45	//---Functions------------------------------------------------------------//
46	//------------------------------------------------------------------------//
47	// options page link
48	function subscribers_plugin_menu() {
49	add_options_page('Subscribers', 'Subscribers', 'create_users', 'subscribers_options', 'subscribers_plugin_options');
50	}
51
52	// whitelist settings
53	function subscribers_register_mysettings(){
54	register_setting('subscribers_options','subscribers_hash');
55	}
56
57	//------------------------------------------------------------------------//
58	//---Add "Settings" link to plugin Page-----------------------------------//
59	//------------------------------------------------------------------------//
60	function subscribers_plugin_settings_link($links) {
61	$settings_link = '<a href="options-general.php?page=subscribers_options">Settings</a>';
62	array_unshift($links, $settings_link);
63	return $links;
64	}
65
66	$plugin = plugin_basename(__FILE__);
67	add_filter("plugin_action_links_$plugin", 'subscribers_plugin_settings_link' );
68
69	//------------------------------------------------------------------------//
70	//---Redirect to Settings page after activation---------------------------//
71	//------------------------------------------------------------------------//
72	register_activation_hook(__FILE__, 'subscribers_plugin_activate');
73	add_action('admin_init', 'subscribers_plugin_redirect');
74
75	function subscribers_plugin_activate() {
76	add_option('subscribers_plugin_do_activation_redirect', true);
77	}
78
79	function subscribers_plugin_redirect() {
80	if (get_option('subscribers_plugin_do_activation_redirect', false)) {
81	delete_option('subscribers_plugin_do_activation_redirect');
82	// Do not redirect if activated as part of a bulk activate
83	if(!isset($_GET['activate-multi'])) {
84	wp_redirect("options-general.php?page=subscribers_options");
85	// wp_redirect() does not exit automatically and should almost always be followed by exit.
86	exit;
87	}
88	}
89	}
90
91	//------------------------------------------------------------------------//
92	//---Serving service worker-----------------------------------------------//
93	//------------------------------------------------------------------------//
94	add_action( 'parse_request', 'subscribers_service_worker' );
95	add_filter( 'query_vars', 'subscribers_query_vars' );
96
97	function subscribers_query_vars($vars) {
98	$vars[] = 'firebase-messaging-sw';
99	return $vars;
100	}
101
102	// Served at `/?firebase-messaging-sw`. Needs to be at the top level in order
103	// to be registered at the correct scope.
104	function subscribers_service_worker($query) {
105	if ( isset( $query->query_vars['firebase-messaging-sw'] ) ) {
106	header( 'Content-Type: application/javascript' );
107	include( 'firebase-messaging-sw.js.php' );
108	exit;
109	}
110	}
111
112	//------------------------------------------------------------------------//
113	//---Output Functions-----------------------------------------------------//
114	//------------------------------------------------------------------------//
115	function subscribers_headercode(){
116	// runs in the header
117	global $subscribers_embed_script;
118	$subscribers_hash = get_option('subscribers_hash');
119
120	if($subscribers_hash){
121	echo str_replace('SUBSCRIBER_ID', $subscribers_hash, $subscribers_embed_script); // only output if options were saved
122	}
123	}
124	//------------------------------------------------------------------------//
125	//---Page Output Functions------------------------------------------------//
126	//------------------------------------------------------------------------//
127	// options page
128	function subscribers_plugin_options() {
129	?>
130	<div class="wrap">
131	<h2>Subscribers - Free Web Push Notifications</h2>
132	<p>
133	The Subscribers plugin will insert the necessary code into your Wordpress site just before the closing
134	<code></body></code> tag. This will allow the subscribe popup and chicklet to be placed on your page so your
135	visitors can subscribe.
136	</p>
137	<p>
138	In order to use this plugin, you need to have a Subscribers account. Please
139	<a target="_blank" href="https://app.subscribers.com/users/signup">sign up here</a> if you do not already have one.
140	</p>
141	<p>
142	Once you sign in to your Subscribers account please click on the link in the header that says “Install the code
143	on your site” and scroll down to where your Site ID is displayed. Copy that ID and paste it into the field
144	below and click Save changes.
145	</p>
146
147	<form method="post" action="options.php">
148	<?php settings_fields( 'subscribers_options' ); ?>
149	<?php do_settings_sections( 'subscribers_options' ); ?>
150
151	<label for="subscribers_hash" style="font-size: 120%; display: block; margin-top: 2em;">Your Subscriber Site ID:</label>
152	<input type="text" id="subscribers_hash" name="subscribers_hash" value="<?php echo get_option('subscribers_hash'); ?>" style="margin-top: 0.5em;" size="50"/>
153
154	<?php submit_button(); ?>
155	</form>
156
157	<p>
158	After you save your Site ID above, go to the homepage of your website, right click somewhere on the page and click
159	on "View page source." A new tab will open with the code for your site.
160	</p>
161
162	<p>
163	Next press CTRL+F (or Command+F on macOS) on your keyboard and type in "Subscriber" and if you see something like
164	this, then you know the code has been added properly. This can take a few minutes to show up. If you have a caching
165	plugin installed, you might need to clear your cache.
166	</p>
167
168	<img src="<?php echo plugins_url('/images/source-code-success-1x.png', __FILE__); ?>" alt="Example code" style="max-width: 100%;" />
169
170	<h3>What are web push notifications?</h3>
171
172	<img src="<?php echo plugins_url('/images/pc_with_notifications-1x.png', __FILE__); ?>" alt="PC with notifications" style="max-width: 100%;" />
173
174	<p>
175	Web push notifications are the digital marketing world’s newest best friend. They allow you to send instant
176	notifications, similar to those found on your smartphone to your subscribers’ devices.
177	</p>
178	<p>
179	This is an ideal solution for marketers looking for a new and very effective channel to reach your audience about
180	news, sales, order status, special offers, empty shopping cart links, new content, events or anything else you can
181	think of.
182	</p>
183	<p>
184	Conversion rates, opt-in rates, and click-through rates are all returning much higher results than traditional email
185	marketing. Don’t wait and get started today, it’s super easy to get it installed and running on your site.
186	</p>
187	<p>
188	To enable it for your Wordpress site, <a target="_blank" href="https://app.subscribers.com/users/signup">sign up for free here.</a> And
189	don’t hesitate to reach out directly to us at <a href="mailto:support@subscribers.com">support@subscribers.com</a>
190	</p>
191	</div>
192
193	<?php
194	}
195
196	function subscribers_warn_nosettings(){
197	if (!is_admin())
198	return;
199
200	$subscribers_option = get_option("subscribers_hash");
201	if (!$subscribers_option){
202	echo '<div class="updated fade"><p><strong>Subscribers is almost ready.</strong> You must <a href="options-general.php?page=subscribers_options">enter your Site ID</a> for it to work.</p></div>';
203	}
204	}
205