Subscribers limit

- added "limit.html" template
- subscribers_limit set in Env class

lib/Config/Env.php

@@ -27,6 +27,7 @@ class Env {
   static $db_password;
   static $db_charset;
   static $db_timezone_offset;
+  static $subscribers_limit = 2000;
 
   static function init($file, $version) {
     global $wpdb;

lib/Config/Menu.php

@@ -34,6 +34,16 @@ class Menu {
     );
   }
 
+  function checkSubscribersLimit() {
+    $subscribers_count = Subscriber::getTotalSubscribers();
+    if($subscribers_count > Env::$subscribers_limit) {
+      echo $this->renderer->render('limit.html', array(
+        'limit' => Env::$subscribers_limit
+      ));
+      exit;
+    }
+  }
+
   function setup() {
     $main_page_slug = 'mailpoet-newsletters';
 
@@ -242,6 +252,8 @@ class Menu {
   }
 
   function settings() {
+    $this->checkSubscribersLimit();
+
     $settings = Setting::getAll();
     $flags = $this->_getFlags();
 
@@ -314,12 +326,16 @@ class Menu {
   }
 
   function segments() {
+    $this->checkSubscribersLimit();
+
     $data = array();
     $data['items_per_page'] = $this->getLimitPerPage('segments');
     echo $this->renderer->render('segments.html', $data);
   }
 
   function forms() {
+    $this->checkSubscribersLimit();
+
     $data = array();
 
     $data['items_per_page'] = $this->getLimitPerPage('forms');
@@ -329,6 +345,8 @@ class Menu {
   }
 
   function newsletters() {
+    $this->checkSubscribersLimit();
+
     global $wp_roles;
 
     $data = array();

lib/Models/Subscriber.php

@@ -624,6 +624,13 @@ class Subscriber extends Model {
     );
   }
 
+  static function getTotalSubscribers() {
+    return self::whereIn('status', array(
+      self::STATUS_SUBSCRIBED,
+      self::STATUS_UNCONFIRMED
+    ))->count();
+  }
+
   static function bulkTrash($orm) {
     $count = parent::bulkAction($orm, function($subscriber_ids) {
       self::rawExecute(join(' ', array(

tests/unit/Models/SubscriberTest.php

@@ -438,6 +438,36 @@ class SubscriberTest extends MailPoetTest {
     expect($subscriber)->notEquals(false);
   }
 
+  function testItCanTheTotalNumberOfSubscribers() {
+    // remove all subscribers
+    Subscriber::deleteMany();
+
+    $subscriber_1 = Subscriber::createOrUpdate(array(
+      'email' => 'subscriber_1@mailpoet.com',
+      'status' => Subscriber::STATUS_SUBSCRIBED
+    ));
+
+    $subscriber_2 = Subscriber::createOrUpdate(array(
+      'email' => 'subscriber_2@mailpoet.com',
+      'status' => Subscriber::STATUS_UNCONFIRMED
+    ));
+
+    $subscriber_3 = Subscriber::createOrUpdate(array(
+      'email' => 'subscriber_3@mailpoet.com',
+      'status' => Subscriber::STATUS_UNSUBSCRIBED
+    ));
+
+    // counts only subscribed & unconfirmed users
+    $total = Subscriber::getTotalSubscribers();
+    expect($total)->equals(2);
+
+    $subscriber_1->status = Subscriber::STATUS_UNSUBSCRIBED;
+    $subscriber_1->save();
+
+    $total = Subscriber::getTotalSubscribers();
+    expect($total)->equals(1);
+  }
+
   function _after() {
     ORM::raw_execute('TRUNCATE ' . Subscriber::$_table);
     ORM::raw_execute('TRUNCATE ' . Segment::$_table);

views/limit.html

@@ -0,0 +1,28 @@
+<% extends 'layout.html' %>
+
+<% block content %>
+
+<div class="wrap about-wrap">
+  <h1><%= __("You've reached the %d subscribers limit!") | format(limit) %></h1>
+
+  <p class="about-text">
+    <%= __("MailPoet 3 is currently limited to %d subscribers.") | format(limit) %>
+  </p>
+
+  <img
+    src="http://i2.wp.com/www.mailpoet.com/wp-content/uploads/2015/05/sad-cat.gif?resize=500%2C212"
+    alt="sad-cat"
+    width="500"
+    height="212"
+  />
+
+  <h3><%= __('Immediately, you can:') %></h3>
+  <ul>
+    <li><%= __('Delete unconfirmed subscribers to have less than %d subscribers.') | format(limit) %></li>
+    <li>
+      <a href="https://docs.mailpoet.com/"><%= __('Contact us')%></a>
+      <%= __('to become a Premium beta tester.')%>
+    </li>
+  </ul>
+</div>
+<% endblock %>