Added per-component subscriptions. Closes #734

app/Bus/Handlers/Events/Component/SendComponentUpdateEmailNotificationHandler.php

@@ -0,0 +1,72 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Bus\Handlers\Events\Component;
+
+use CachetHQ\Cachet\Bus\Events\Component\ComponentWasUpdatedEvent;
+use CachetHQ\Cachet\Models\Component;
+use CachetHQ\Cachet\Models\Subscription;
+use Illuminate\Contracts\Mail\MailQueue;
+use Illuminate\Mail\Message;
+use McCool\LaravelAutoPresenter\Facades\AutoPresenter;
+
+class SendComponentUpdateEmailNotificationHandler
+{
+    /**
+     * The mailer instance.
+     *
+     * @var \Illuminate\Contracts\Mail\Mailer
+     */
+    protected $mailer;
+
+    /**
+     * Create a new send incident email notification handler.
+     *
+     * @param \Illuminate\Contracts\Mail\Mailer $mailer
+     *
+     * @return void
+     */
+    public function __construct(MailQueue $mailer)
+    {
+        $this->mailer = $mailer;
+    }
+
+    /**
+     * Handle the event.
+     *
+     * @param \CachetHQ\Cachet\Bus\Events\Component\ComponentWasUpdatedEvent $event
+     *
+     * @return void
+     */
+    public function handle(ComponentWasUpdatedEvent $event)
+    {
+        $component = AutoPresenter::decorate($event->component);
+
+        $mail = [
+            'subject'                => trans('cachet.subscriber.email.component.subject'),
+            'component_name'         => $component->name,
+            'component_human_status' => $component->human_status,
+        ];
+
+        foreach (Subscription::isVerifiedForComponent($component->id)->with('subscriber')->get() as $subscription) {
+            $subscriber = $subscription->subscriber;
+            $mail['email'] = $subscriber->email;
+            $mail['unsubscribe_link'] = route('subscribe.unsubscribe', ['code' => $subscriber->verify_code, 'subscription' => $subscription->id]);
+
+            $this->mailer->queue([
+                'html' => 'emails.components.update-html',
+                'text' => 'emails.components.update-text',
+            ], $mail, function (Message $message) use ($mail) {
+                $message->to($mail['email'])->subject($mail['subject']);
+            });
+        }
+    }
+}