limitting the recently sent templates to 12

lib/API/JSON/v1/NewsletterTemplates.php

@@ -45,9 +45,12 @@ class NewsletterTemplates extends APIEndpoint {
         $data['id'] = $template['id'];
       }
     }
+
     $template = NewsletterTemplate::createOrUpdate($data);
     $errors = $template->getErrors();
 
+    NewsletterTemplate::cleanRecentlySent($data);
+
     if(!empty($errors)) {
       return $this->errorResponse($errors);
     } else {

lib/Models/NewsletterTemplate.php

@@ -6,6 +6,9 @@ if(!defined('ABSPATH')) exit;
 class NewsletterTemplate extends Model {
   public static $_table = MP_NEWSLETTER_TEMPLATES_TABLE;
 
+  const RECENTLY_SENT_CATEGORIES = '["recent"]';
+  const RECENTLY_SENT_COUNT = 12;
+
   function __construct() {
     parent::__construct();
 
@@ -17,6 +20,22 @@ class NewsletterTemplate extends Model {
     ));
   }
 
+  static function cleanRecentlySent($data) {
+    if(!empty($data['categories']) && $data['categories'] === self::RECENTLY_SENT_CATEGORIES) {
+      $ids = parent::where('categories', self::RECENTLY_SENT_CATEGORIES)
+        ->select('id')
+        ->orderByDesc('id')
+        ->limit(self::RECENTLY_SENT_COUNT)
+        ->findMany();
+      $ids = array_map(function ($template) {
+        return $template->id;
+      }, $ids);
+      parent::where('categories', self::RECENTLY_SENT_CATEGORIES)
+        ->whereNotIn('id', $ids)
+        ->deleteMany();
+    }
+  }
+
   function asArray() {
     $template = parent::asArray();
     if(isset($template['body'])) {

tests/unit/Models/NewsletterTemplateTest.php

@@ -76,6 +76,37 @@ class NewsletterTemplateTest extends \MailPoetTest {
     expect($template->name)->equals('Another template updated');
   }
 
+  function testItCanCleanRecentlySent() {
+    $total = NewsletterTemplate::RECENTLY_SENT_COUNT + 5;
+    for($i = 0; $i < $total; $i++) {
+      NewsletterTemplate::createOrUpdate(array(
+        'name' => 'Testing template ' . $i,
+        'description' => 'template description',
+        'body' => '{content: {}, globalStyles: {}}',
+        'categories' => NewsletterTemplate::RECENTLY_SENT_CATEGORIES
+      ));
+    }
+
+    NewsletterTemplate::cleanRecentlySent(array());
+    $count = NewsletterTemplate::where(
+      'categories', NewsletterTemplate::RECENTLY_SENT_CATEGORIES
+      )->count();
+    expect($count)->equals($total);
+
+    NewsletterTemplate::cleanRecentlySent(array(
+      'categories' => NewsletterTemplate::RECENTLY_SENT_CATEGORIES    
+    ));
+    $count = NewsletterTemplate::where(
+      'categories', NewsletterTemplate::RECENTLY_SENT_CATEGORIES
+      )->count();
+    expect($count)->equals(NewsletterTemplate::RECENTLY_SENT_COUNT);
+
+    $first = NewsletterTemplate::where(
+      'categories', NewsletterTemplate::RECENTLY_SENT_CATEGORIES
+      )->findOne();
+    expect($first->name)->equals('Testing template 5');
+  }
+
   function _after() {
     \ORM::for_table(NewsletterTemplate::$_table)
       ->deleteMany();