feat: send notification to admins after LibreSign upgrade

Signed-off-by: Samuelson Brito <samuelsonma@gmail.com>

appinfo/info.xml

@@ -60,6 +60,7 @@ Developed with ❤️ by [LibreCode](https://librecode.coop). Help us transform
 		<post-migration>
 			<step>OCA\Libresign\Migration\DeleteOldBinaries</step>
 			<step>OCA\Libresign\Migration\ResynchronizeDatabaseSequences</step>
+			<step>OCA\Libresign\Migration\NotifyAdminsAfterUpgrade</step>
 		</post-migration>
 	</repair-steps>
 	<commands>

lib/Migration/NotifyAdminsAfterUpgrade.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\Libresign\Migration;
+
+use OCA\Libresign\AppInfo\Application as AppInfoApplication;
+use OCP\IUserManager;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+use OCP\Notification\IManager as NotificationManager;
+
+class NotifyAdminsAfterUpgrade implements IRepairStep {
+	public function __construct(
+		private IUserManager $userManager,
+		private NotificationManager $notificationManager,
+	) {
+	}
+
+	public function getName(): string {
+		return 'Notify admins after LibreSign upgrade';
+	}
+
+	public function run(IOutput $output): void {
+		$admins = $this->userManager->search('', 1, 0, ['admin']);
+		foreach ($admins as $admin) {
+			$notification = $this->notificationManager->createNotification();
+			$notification
+				->setApp(AppInfoApplication::APP_ID)
+				->setUser($admin->getUID())
+				->setDateTime(new \DateTime())
+				->setObject('upgrade', '1')
+				->setSubject('libresign_upgrade', [
+					'message' => 'LibreSign has been updated! Consider supporting the project: https://libresign.coop'
+				]);
+			$this->notificationManager->notify($notification);
+		}
+	}
+}

lib/Notification/Notifier.php

@@ -52,6 +52,7 @@ class Notifier implements INotifier {
 			'new_sign_request' => $this->parseSignRequest($notification, $l, false),
 			'update_sign_request' => $this->parseSignRequest($notification, $l, true),
 			'file_signed' => $this->parseSigned($notification, $l),
+			'libresign_upgrade' => $this->parseUpgrade($notification, $l),
 			default => throw new UnknownNotificationException(),
 		};
 	}
@@ -206,4 +207,17 @@ class Notifier implements INotifier {
 		return $notification;
 
 	}
+
+	private function parseUpgrade(
+		INotification $notification,
+		IL10N $l,
+	): INotification {
+		$parameters = $notification->getSubjectParameters();
+		$notification->setIcon($this->url->getAbsoluteURL($this->url->imagePath(Application::APP_ID, 'app-dark.svg')));
+		$subject = $l->t('LibreSign has been updated!');
+		$message = $parameters['message'] ?? '';
+		$notification->setParsedSubject($subject)
+			->setParsedMessage($message);
+		return $notification;
+	}
 }