From dfe4787884c739acec428a4958158cdd8287a486 Mon Sep 17 00:00:00 2001
From: Sami Mazouz <sychocouldy@gmail.com>
Date: Sat, 12 Oct 2024 15:15:02 +0100
Subject: [PATCH 1/2] feat: add `List-Unsubscribe` header to emails

---
 .../core/src/Mail/MailServiceProvider.php     |  7 +++++++
 framework/core/src/Mail/MutateEmail.php       | 19 +++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 framework/core/src/Mail/MutateEmail.php

diff --git a/framework/core/src/Mail/MailServiceProvider.php b/framework/core/src/Mail/MailServiceProvider.php
index 9a1d338b5c..749b224128 100644
--- a/framework/core/src/Mail/MailServiceProvider.php
+++ b/framework/core/src/Mail/MailServiceProvider.php
@@ -12,8 +12,10 @@
 use Flarum\Foundation\AbstractServiceProvider;
 use Flarum\Settings\SettingsRepositoryInterface;
 use Illuminate\Contracts\Container\Container;
+use Illuminate\Contracts\Events\Dispatcher;
 use Illuminate\Contracts\Mail\Mailer as MailerContract;
 use Illuminate\Contracts\Validation\Factory;
+use Illuminate\Mail\Events\MessageSending;
 use Illuminate\Support\Arr;
 use Symfony\Component\Mailer\Transport\TransportInterface;
 
@@ -82,4 +84,9 @@ public function register(): void
 
         $this->container->alias('mailer', MailerContract::class);
     }
+
+    public function boot(Dispatcher $events): void
+    {
+        $events->listen(MessageSending::class, MutateEmail::class);
+    }
 }
diff --git a/framework/core/src/Mail/MutateEmail.php b/framework/core/src/Mail/MutateEmail.php
new file mode 100644
index 0000000000..7a81e1fd98
--- /dev/null
+++ b/framework/core/src/Mail/MutateEmail.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Flarum\Mail;
+
+use Illuminate\Mail\Events\MessageSending;
+
+class MutateEmail
+{
+    public function handle(MessageSending $event): bool
+    {
+        if (! empty($link = $event->data['unsubscribeLink'])) {
+            $headers = $event->message->getHeaders();
+
+            $headers->addTextHeader('List-Unsubscribe', '<'.$link.'>');
+        }
+
+        return true;
+    }
+}

From 94a43bca4fec0100efac034e54f116d09008e5fa Mon Sep 17 00:00:00 2001
From: StyleCI Bot <bot@styleci.io>
Date: Sat, 12 Oct 2024 14:15:14 +0000
Subject: [PATCH 2/2] Apply fixes from StyleCI

---
 framework/core/src/Mail/MutateEmail.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/framework/core/src/Mail/MutateEmail.php b/framework/core/src/Mail/MutateEmail.php
index 7a81e1fd98..b668ce401e 100644
--- a/framework/core/src/Mail/MutateEmail.php
+++ b/framework/core/src/Mail/MutateEmail.php
@@ -1,5 +1,12 @@
 <?php
 
+/*
+ * This file is part of Flarum.
+ *
+ * For detailed copyright and license information, please view the
+ * LICENSE file that was distributed with this source code.
+ */
+
 namespace Flarum\Mail;
 
 use Illuminate\Mail\Events\MessageSending;