MailController.php

<?php

namespace SGalinski\SgMail\Controller;

/***************************************************************
 *  Copyright notice
 *
 *  (c) sgalinski Internet Services (https://www.sgalinski.de)
 *
 *  All rights reserved
 *
 *  This script is part of the TYPO3 project. The TYPO3 project is
 *  free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  The GNU General Public License can be found at
 *  http://www.gnu.org/copyleft/gpl.html.
 *
 *  This script 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 General Public License for more details.
 *
 *  This copyright notice MUST APPEAR in all copies of the script!
 ***************************************************************/

use SGalinski\SgMail\Service\MailTemplateService;
use TYPO3\CMS\Extbase\Mvc\Controller\ActionController;

/**
 * Controller for the mail templating service module
 */
class MailController extends ActionController {

	/**
	 * @var \TYPO3\CMS\Lang\Domain\Repository\LanguageRepository
	 * @inject
	 */
	protected $languageRepository = NULL;

	/**
	 *
	 */
	public function indexAction() {

		$activatedLanguages = $this->languageRepository->findSelected();
		$languages = ['en'];
		foreach ($activatedLanguages as $language) {
			$languages[] = $language->getLocale();
		}

		$this->view->assign('languages', $languages);
		$this->view->assign('templates', MailTemplateService::getRegisterArray());

		if ($this->request->hasArgument('selectedTemplate')
				&& !$this->request->hasArgument('selectedLanguageLeft')
				&& !$this->request->hasArgument('selectedLanguageRight')) {

			$registerArray = MailTemplateService::getRegisterArray();
			$selectedExtensionArg = $this->request->getArgument('selectedExtension');
			$selectedTemplateArg = $this->request->getArgument('selectedTemplate');

			$selectedTemplate = $registerArray[$selectedExtensionArg][$selectedTemplateArg];

			$this->view->assign('selectedTemplate', $selectedTemplate);
			$this->view->assign('selectedTemplateKey', (int) $selectedTemplateArg);
			$this->view->assign('selectedExtensionKey', $selectedExtensionArg);

		} elseif (!$this->request->hasArgument('selectedLanguageLeft')
				&& !$this->request->hasArgument('selectedLanguageRight')) {

			reset(MailTemplateService::getRegisterArray());
			$firstEntry = key(MailTemplateService::getRegisterArray());

			$this->view->assign('selectedTemplate', MailTemplateService::getRegisterArray()[$firstEntry][0]);
			$this->view->assign('selectedTemplateKey', (int) $firstEntry);
			$this->view->assign('selectedExtensionKey', $firstEntry);

		}

		if ($this->request->hasArgument('selectedLanguageLeft')
			&& $this->request->hasArgument('selectedLanguageRight')
				&& $this->request->hasArgument('selectedTemplate')
				&& $this->request->hasArgument('selectedExtensionKey')) {

			$this->view->assign('selectedLanguageLeft', $this->request->getArgument('selectedLanguageLeft'));
			$this->view->assign('selectedLanguageRight', $this->request->getArgument('selectedLanguageRight'));
			$this->view->assign('selectedTemplate', $this->request->getArgument('selectedTemplate'));
			$this->view->assign('selectedTemplateKey', $this->request->getArgument('selectedTemplateKey'));
			$this->view->assign('selectedExtensionKey', (int) $this->request->getArgument('selectedExtensionKey'));

		} else {
			$this->view->assign('selectedLanguageLeft', 'en');
			$this->view->assign('selectedLanguageRight', 'en');
		}

	}

}