Move system messages from boot to own class

src/Navigation/SystemMessages.php

@@ -0,0 +1,87 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * Friendica is a communications platform for integrated social communications
+ * utilising decentralised communications and linkage to several indie social
+ * projects - as well as popular mainstream providers.
+ *
+ * Our mission is to free our friends and families from the clutches of
+ * data-harvesting corporations, and pave the way to a future where social
+ * communications are free and open and flow between alternate providers as
+ * easily as email does today.
+ */
+
+namespace Friendica\Navigation;
+
+use Friendica\Core\Session\Capability\IHandleSessions;
+
+class SystemMessages
+{
+	/**
+	 * @var IHandleSessions
+	 */
+	private $session;
+
+	public function __construct(IHandleSessions $session)
+	{
+		$this->session = $session;
+	}
+
+	public function addNotice(string $message)
+	{
+		$sysmsg = $this->getNotices();
+
+		$sysmsg[] = $message;
+
+		$this->session->set('sysmsg', $sysmsg);
+	}
+
+	public function getNotices(): array
+	{
+		return $this->session->get('sysmsg', []);
+	}
+
+	public function flushNotices(): array
+	{
+		$notices = $this->getNotices();
+		$this->session->remove('sysmsg');
+		return $notices;
+	}
+
+	public function addInfo(string $message)
+	{
+		$sysmsg = $this->getNotices();
+
+		$sysmsg[] = $message;
+
+		$this->session->set('sysmsg_info', $sysmsg);
+	}
+
+	public function getInfos(): array
+	{
+		return $this->session->get('sysmsg_info', []);
+	}
+
+	public function flushInfos(): array
+	{
+		$notices = $this->getInfos();
+		$this->session->remove('sysmsg_info');
+		return $notices;
+	}
+}