.-.-.-.-.-

<?php
/**
 * @link https://craftcms.com/
 * @copyright Copyright (c) Pixel & Tonic, Inc.
 * @license https://craftcms.github.io/license/
 */

namespace craft\controllers;

use Craft;
use craft\base\Fs;
use craft\base\FsInterface;
use craft\helpers\ArrayHelper;
use craft\web\Controller;
use yii\web\BadRequestHttpException;
use yii\web\ForbiddenHttpException;
use yii\web\NotFoundHttpException;
use yii\web\Response;
use yii\web\Response as YiiResponse;

/**
 * The FsController class is a controller that handles various actions related to asset filesystems, such as
 * creating, editing, renaming and deleting them.
 * Note that all actions in the controller require an authenticated Craft session via [[allowAnonymous]].
 *
 * @author Pixel & Tonic, Inc. <support@pixelandtonic.com>
 * @since 4.0.0
 */
class FsController extends Controller
{
    /**
     * @inheritdoc
     */
    public function beforeAction($action): bool
    {
        if (!parent::beforeAction($action)) {
            return false;
        }

// All asset volume actions require an admin
        $this->requireAdmin();

return true;
    }

/**
     * Shows the filesystem list.
     *
     * @return Response
     */
    public function actionIndex(): Response
    {
        $variables = [];
        $variables['filesystems'] = Craft::$app->getFs()->getAllFilesystems();

return $this->renderTemplate('settings/filesystems/_index.twig', $variables);
    }

/**
     * Edit a filesystem.
     *
     * @param string|null $handle The filesystem’s handle, if editing an existing filesystem.
     * @param Fs|null $filesystem The filesystem being edited, if there were any validation errors.
     * @return Response
     * @throws ForbiddenHttpException if the user is not an admin
     * @throws NotFoundHttpException if the requested volume cannot be found
     */
    public function actionEdit(?string $handle = null, ?Fs $filesystem = null): Response
    {
        $this->requireAdmin();

$fsService = Craft::$app->getFs();

if ($filesystem === null) {
            if ($handle !== null) {
                $filesystem = $fsService->getFilesystemByHandle($handle);

if ($filesystem === null) {
                    throw new NotFoundHttpException('Filesystem not found');
                }
            }
        }

$allFsTypes = Craft::$app->getFs()->getAllFilesystemTypes();

$fsInstances = [];
        $fsOptions = [];

foreach ($allFsTypes as $fsType) {
            /** @var Fs $fsInstance */
            $fsInstance = Craft::createObject($fsType);

if ($filesystem === null) {
                $filesystem = $fsInstance;
            }

$fsInstances[$fsType] = $fsInstance;
            $fsOptions[] = [
                'value' => $fsType,
                'label' => $fsInstance::displayName(),
            ];
        }

// Sort them by name
        ArrayHelper::multisort($fsOptions, 'label');

if ($handle && $fsService->getFilesystemByHandle($handle)) {
            $title = trim($filesystem->name ?: Craft::t('app', 'Edit Filesystem'));
        } else {
            $title = Craft::t('app', 'Create a new filesystem');
        }

return $this->asCpScreen()
            ->title($title)
            ->addCrumb(Craft::t('app', 'Settings'), 'settings')
            ->addCrumb(Craft::t('app', 'Filesystems'), 'settings/filesystems')
            ->action('fs/save')
            ->redirectUrl('settings/filesystems')
            ->addAltAction(Craft::t('app', 'Save and continue editing'), [
                'redirect' => 'settings/filesystems/{handle}',
                'shortcut' => true,
                'retainScroll' => true,
            ])
            ->contentTemplate('settings/filesystems/_edit.twig', [
                'oldHandle' => $handle,
                'filesystem' => $filesystem,
                'fsOptions' => $fsOptions,
                'fsInstances' => $fsInstances,
                'fsTypes' => $allFsTypes,
            ]);
    }

/**
     * Saves a filesystem.
     *
     * @return Response|null
     * @throws BadRequestHttpException
     */
    public function actionSave(): ?YiiResponse
    {
        $this->requirePostRequest();

$fsService = Craft::$app->getFs();
        $type = $this->request->getBodyParam('type');

/** @var FsInterface|Fs $fs */
        $fs = $fsService->createFilesystem([
            'type' => $type,
            'name' => $this->request->getBodyParam('name'),
            'handle' => $this->request->getBodyParam('handle'),
            'oldHandle' => $this->request->getBodyParam('oldHandle'),
            'settings' => $this->request->getBodyParam("types.$type"),
        ]);

if (!$fsService->saveFilesystem($fs)) {
            return $this->asModelFailure($fs, Craft::t('app', 'Couldn’t save filesystem.'), 'filesystem');
        }

return $this->asModelSuccess($fs, Craft::t('app', 'Filesystem saved.'), 'filesystem');
    }

/**
     * Removes a filesystem.
     */
    public function actionRemove(): Response
    {
        $this->requirePostRequest();
        $this->requireAcceptsJson();
        $handle = $this->request->getRequiredBodyParam('id');
        $fsService = Craft::$app->getFs();
        $fs = $fsService->getFilesystemByHandle($handle);

if ($fs) {
            $fsService->removeFilesystem($fs);
        }

return $this->asSuccess();
    }
}

/srv/users/craft4/apps/craft4-newsite-space/./vendor/craftcms/cms/src/controllers/FsController.php