<?php
/**
 * @copyright Copyright (C) 2010-2021, 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/>.
 *
 */

namespace Friendica\Module\Admin;

use Friendica\Core\Renderer;
use Friendica\DI;
use Friendica\Model\Storage\ISelectableStorage;
use Friendica\Module\BaseAdmin;
use Friendica\Util\Strings;

class Storage extends BaseAdmin
{
	public static function post(array $parameters = [])
	{
		self::checkAdminAccess();

		self::checkFormSecurityTokenRedirectOnError('/admin/storage', 'admin_storage');

		$storagebackend = Strings::escapeTags(trim($parameters['name'] ?? ''));

		/** @var ISelectableStorage $newstorage */
		$newstorage = DI::storageManager()->getSelectableStorageByName($storagebackend);

		// save storage backend form
		$storage_opts        = $newstorage->getOptions();
		$storage_form_prefix = preg_replace('|[^a-zA-Z0-9]|', '', $storagebackend);
		$storage_opts_data   = [];
		foreach ($storage_opts as $name => $info) {
			$fieldname = $storage_form_prefix . '_' . $name;
			switch ($info[0]) { // type
				case 'checkbox':
				case 'yesno':
					$value = !empty($_POST[$fieldname]);
					break;
				default:
					$value = $_POST[$fieldname] ?? '';
			}
			$storage_opts_data[$name] = $value;
		}
		unset($name);
		unset($info);

		$storage_form_errors = $newstorage->saveOptions($storage_opts_data);
		if (count($storage_form_errors)) {
			foreach ($storage_form_errors as $name => $err) {
				notice('Storage backend, ' . $storage_opts[$name][1] . ': ' . $err);
			}
			DI::baseUrl()->redirect('admin/storage');
		}

		if (!empty($_POST['submit_save_set'])) {
			/** @var ISelectableStorage $newstorage */
			$newstorage = DI::storageManager()->getSelectableStorageByName($storagebackend);

			if (!DI::storageManager()->setBackend($newstorage)) {
				notice(DI::l10n()->t('Invalid storage backend setting value.'));
			}
		}

		DI::baseUrl()->redirect('admin/storage');
	}

	public static function content(array $parameters = [])
	{
		parent::content($parameters);

		$current_storage_backend = DI::storage();
		$available_storage_forms = [];

		foreach (DI::storageManager()->listBackends() as $name => $class) {

			// build storage config form,
			$storage_form_prefix = preg_replace('|[^a-zA-Z0-9]|', '', $name);

			$storage_form = [];
			foreach (DI::storageManager()->getSelectableStorageByName($name)->getOptions() as $option => $info) {
				$type = $info[0];
				// Backward compatibilty with yesno field description
				if ($type == 'yesno') {
					$type = 'checkbox';
					// Remove translated labels Yes No from field info
					unset($info[4]);
				}

				$info[0]               = $storage_form_prefix . '_' . $option;
				$info['type']          = $type;
				$info['field']         = 'field_' . $type . '.tpl';
				$storage_form[$option] = $info;
			}

			$available_storage_forms[] = [
				'name'   => $name,
				'prefix' => $storage_form_prefix,
				'form'   => $storage_form,
				'active' => $current_storage_backend instanceof ISelectableStorage && $name === $current_storage_backend::getName(),
			];
		}

		$t = Renderer::getMarkupTemplate('admin/storage.tpl');

		return Renderer::replaceMacros($t, [
			'$title'                 => DI::l10n()->t('Administration'),
			'$page'                  => DI::l10n()->t('Storage'),
			'$save'                  => DI::l10n()->t('Save'),
			'$save_activate'         => DI::l10n()->t('Save & Activate'),
			'$activate'              => DI::l10n()->t('Activate'),
			'$save_reload'           => DI::l10n()->t('Save & Reload'),
			'$noconfig'              => DI::l10n()->t('This backend doesn\'t have custom settings'),
			'$baseurl'               => DI::baseUrl()->get(true),
			'$form_security_token'   => self::getFormSecurityToken("admin_storage"),
			'$storagebackend'        => $current_storage_backend instanceof ISelectableStorage ? $current_storage_backend::getName() : DI::l10n()->t('Database (legacy)'),
			'$availablestorageforms' => $available_storage_forms,
		]);
	}
}