From 2616c5a2634a6048d853e2f42d0ceaf349678037 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Jakes=CC=8C?= <jan@jakes.pro>
Date: Tue, 25 Jun 2019 17:33:24 +0200
Subject: [PATCH] Add per-subscriber cancel functionality for automatic emails

[PREMIUM-121]
---
 lib/Newsletter/Scheduler/Scheduler.php | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/lib/Newsletter/Scheduler/Scheduler.php b/lib/Newsletter/Scheduler/Scheduler.php
index 2cb9a59a70..1decce2eba 100644
--- a/lib/Newsletter/Scheduler/Scheduler.php
+++ b/lib/Newsletter/Scheduler/Scheduler.php
@@ -123,6 +123,27 @@ class Scheduler {
     }
   }
 
+  static function cancelAutomaticEmail($group, $event, $subscriber_id) {
+    $newsletters = self::getNewsletters(Newsletter::TYPE_AUTOMATIC, $group);
+    if (empty($newsletters)) {
+      return false;
+    }
+
+    foreach ($newsletters as $newsletter) {
+      if ($newsletter->event !== $event) {
+        continue;
+      }
+
+      // try to find existing scheduled task for given subscriber
+      $task = ScheduledTask::findOneScheduledByNewsletterIdAndSubscriberId($newsletter->id, $subscriber_id);
+      if ($task) {
+        SendingQueue::where('task_id', $task->id)->deleteMany();
+        ScheduledTaskSubscriber::where('task_id', $task->id)->deleteMany();
+        $task->delete();
+      }
+    }
+  }
+
   static function scheduleWPUserWelcomeNotification(
     $subscriber_id,
     $wp_user,