Merge pull request #795 from mailpoet/preview_link_update

Allows sharing of newsletter preview links [MAILPOET-791]

lib/API/Endpoints/Newsletters.php

@@ -340,11 +340,10 @@ class Newsletters extends APIEndpoint {
       }
 
       // get preview url
-      $subscriber = Subscriber::getCurrentWPUser();
       $newsletter->preview_url = NewsletterUrl::getViewInBrowserUrl(
         NewsletterUrl::TYPE_LISTING_EDITOR,
         $newsletter,
-        $subscriber,
+        $subscriber = null,
         $queue
       );
 

lib/Models/Newsletter.php

@@ -593,6 +593,7 @@ class Newsletter extends Model {
     return self::select(array(
         'id',
         'subject',
+        'hash',
         'type',
         'status',
         'updated_at',

lib/Newsletter/Url.php

@@ -27,8 +27,7 @@ class Url {
         $preview = true;
         break;
       case self::TYPE_LISTING_EDITOR:
-        // enable preview and hide newsletter hash when displaying from editor or listings
-        $newsletter->hash = null;
+        // enable preview when displaying from editor or listings
         $preview = true;
         break;
       default:

lib/Router/Endpoints/ViewInBrowser.php

@@ -50,10 +50,14 @@ class ViewInBrowser {
       if(empty($data->subscriber_token) ||
          !Subscriber::verifyToken($data->subscriber->email, $data->subscriber_token)
       ) return false;
+    } else if(!$data->subscriber && !empty($data->preview)) {
+      // if this is a preview and subscriber does not exist,
+      // attemp to set subscriber to the current logged-in WP user
+      $data->subscriber = Subscriber::getCurrentWPUser();
     }
 
-    // if newsletter ID is defined then subscriber must exist
-    if($data->newsletter_id && !$data->subscriber) return false;
+    // if newsletter hash is not provided but newsletter ID is defined then subscriber must exist
+    if(empty($data->newsletter_hash) && $data->newsletter_id && !$data->subscriber) return false;
 
     // queue is optional; if defined, get it
     $data->queue = (!empty($data->queue_id)) ?

tests/unit/API/Endpoints/NewslettersTest.php

@@ -8,6 +8,8 @@ use MailPoet\Models\NewsletterOptionField;
 use MailPoet\Models\NewsletterSegment;
 use MailPoet\Models\Segment;
 use MailPoet\Newsletter\Scheduler\Scheduler;
+use MailPoet\Newsletter\Url;
+use MailPoet\Router\Router;
 
 class NewslettersTest extends MailPoetTest {
   function _before() {
@@ -29,7 +31,7 @@ class NewslettersTest extends MailPoetTest {
   function testItCanGetANewsletter() {
     $router = new Newsletters();
 
-    $response = $router->get(/* missing id */);
+    $response = $router->get(); // missing id
     expect($response->status)->equals(APIResponse::STATUS_NOT_FOUND);
     expect($response->errors[0]['message'])
       ->equals('This newsletter does not exist.');
@@ -517,7 +519,7 @@ class NewslettersTest extends MailPoetTest {
     expect($response->status)->equals(APIResponse::STATUS_OK);
   }
 
-  function testItReturnsMaillerErrorWhenSendingFailed() {
+  function testItReturnsMailerErrorWhenSendingFailed() {
     $subscriber = 'test@subscriber.com';
     $data = array(
       'subscriber' => $subscriber,
@@ -542,6 +544,18 @@ class NewslettersTest extends MailPoetTest {
     expect($response->errors[0]['message'])->equals('The email could not be sent: failed');
   }
 
+  function testItGeneratesPreviewLinksWithNewsletterHashAndNoSubscriberData() {
+    $router = new Newsletters();
+    $response = $router->listing();
+    $preview_link = $response->data[0]['preview_url'];
+    parse_str(parse_url($preview_link, PHP_URL_QUERY), $preview_link_data);
+    $preview_link_data = Url::transformUrlDataObject(Router::decodeRequestData($preview_link_data['data']));
+    expect($preview_link_data['newsletter_hash'])->notEmpty();
+    expect($preview_link_data['subscriber_id'])->false();
+    expect($preview_link_data['subscriber_token'])->false();
+    expect((boolean)$preview_link_data['preview'])->true();
+  }
+
   function _after() {
     Newsletter::deleteMany();
     NewsletterSegment::deleteMany();

tests/unit/Router/Endpoints/ViewInBrowserTest.php

@@ -143,6 +143,21 @@ class ViewInBrowserRouterTest extends MailPoetTest {
     expect($this->view_in_browser->_validateBrowserPreviewData($data))->equals($data);
   }
 
+  function testItSetsSubscriberToLoggedInWPUserWhenPreviewIsEnabled() {
+    $data = (object)array_merge(
+      $this->browser_preview_data,
+      array(
+        'queue' => $this->queue,
+        'subscriber' => null,
+        'newsletter' => $this->newsletter
+      )
+    );
+    $data->preview = true;
+    wp_set_current_user(1);
+    $result = $this->view_in_browser->_validateBrowserPreviewData($data);
+    expect($result->subscriber->id)->equals(1);
+  }
+
   function testItProcessesBrowserPreviewData() {
     $processed_data = $this->view_in_browser->_processBrowserPreviewData($this->browser_preview_data);
     expect($processed_data->queue->id)->equals($this->queue->id);