Create AppHelper class

src/AppHelper.php

@@ -0,0 +1,49 @@
+<?php
+
+// Copyright (C) 2010-2024, the Friendica project
+// SPDX-FileCopyrightText: 2010-2024 the Friendica project
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+namespace Friendica;
+
+use DateTimeZone;
+use Friendica\Util\DateTimeFormat;
+
+/**
+ * Helper for our main application structure for the life of this page.
+ *
+ * Primarily deals with the URL that got us here
+ * and tries to make some sense of it, and
+ * stores our page contents and config storage
+ * and anything else that might need to be passed around
+ * before we spit the page out.
+ *
+ */
+final class AppHelper
+{
+	private $timezone = '';
+
+	/**
+	 * Set the timezone
+	 *
+	 * @param string $timezone A valid time zone identifier, see https://www.php.net/manual/en/timezones.php
+	 * @return void
+	 */
+	public function setTimeZone(string $timezone)
+	{
+		$this->timezone = (new DateTimeZone($timezone))->getName();
+
+		DateTimeFormat::setLocalTimeZone($this->timezone);
+	}
+
+	/**
+	 * Get the timezone
+	 *
+	 * @return int
+	 */
+	public function getTimeZone(): string
+	{
+		return $this->timezone;
+	}
+}

src/DI.php

@@ -78,6 +78,11 @@ abstract class DI
 		return self::$dice->create(App::class);
 	}
 
+	public static function apphelper(): AppHelper
+	{
+		return self::$dice->create(AppHelper::class);
+	}
+
 	/**
 	 * @return Database\Database
 	 */