filebrowser-8.x-2.x-dev/src/Form/UploadForm.php

<?php

namespace Drupal\filebrowser\Form;

use Drupal;
use Drupal\Core\File\FileSystem;
use Drupal\Core\File\FileSystemInterface;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Cache\Cache;
use Drupal\file\Entity\File;
use Drupal\Core\File\FileExists;
use Drupal\filebrowser\Services\Common;
use Drupal\node\Entity\Node;
use Drupal\node\NodeInterface;

class UploadForm extends FormBase {

  /**
   * @var int
   */
  protected $queryFid;

  /**
   * @var string
   */
  protected $relativeRoot;
  /**
   * @var NodeInterface
   */
  protected $node;

  /**
   * @var integer
   */
  protected $nid;

  /**
   * @var Common
   */
  protected $common;

  /**
   * {@inheritdoc}
   */
  public function getFormId(): string {
    return 'upload_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $nid= null, $query_fid = null, $fids = null, $ajax = null): array {
    $this->common = Drupal::service('filebrowser.common');
    $this->relativeRoot = $this->common->relativePath($query_fid);
    $this->node = Node::load($nid);
    $this->queryFid = $query_fid;
    $this->nid = $nid;

    $accepted = $this->node?->filebrowser->accepted ?? '';
    $extensions = is_array($accepted) ? implode(' ', $accepted) : (string) $accepted;

    // if this form is opened by ajax add a close link.
    if ($ajax) {
      $form['#attributes'] = [
        'class' => [
          'form-in-slide-down'
        ],
      ];
      $form['close'] = $this->common->closeButtonMarkup();
    }

    // The widget will upload to temporary:// so incomplete and abandoned uploads are
    // auto-cleaned by cron.
    // During submit we will move the file to the final destination.
    $tmp_base = 'temporary://filebrowser';
    $tmp_dir  = $this->common->joinURI($tmp_base, $this->nid . '/' . ($this->relativeRoot ?? ''));

    $form['u_file'] = [
      '#title' => $this->t('Upload file'),
      '#type' => 'managed_file',
      '#description' => $this->t('File types accepted: @accepted', ['@accepted' => $extensions]) . '<br>' . $this->t('You can upload multiple files.'),
      '#multiple' => TRUE,
      '#upload_validators' => [
        'FileExtension' => ['extensions' => $extensions],
        'FileExtensionSecure' => [],
      ],
      '#upload_location' => $tmp_dir,
      '#progress_indicator' => 'bar',
      '#progress_message' => $this->t('Please wait...'),
    ];

    $form['submit'] = [
      '#type' => 'submit',
      '#value' => $this->t('Save Upload'),
    ];
    return $form;
  }

  /**
   * @inheritdoc
   */
  public function validateForm(array &$form, FormStateInterface $form_state): void{
  }

  /**
   * @inheritdoc
   */
  public function submitForm(array &$form, FormStateInterface $form_state) :void {
    // While we are using the managed_file widget (for convenience), we don't
    // want to save the file in the file_managed table, so we will delete it
    // here.
    // A bit hackish, but it works.

    // Grab FIDs from managed_file value. It can be either:
    // - an array of FIDs or
    // - ['fids' => [...]] depending on context.
    $value = (array)$form_state->getValue('u_file');
    $fids = isset($value['fids']) ? (array)$value['fids'] : $value;
    $fids = array_values(array_filter(array_map('intval', $fids)));

    if ($fids) {
      /** @var NodeInterface|null $node */
      $node = $this->node instanceof NodeInterface ? $this->node : NULL;
      $node_fb = $node?->filebrowser;

      // Final destination path from node folderPath + relativeRoot.
      $folderPath = (string)($node_fb->folderPath ?? 'public://');
      $upload_location = $this->common->joinURI($folderPath, $this->relativeRoot ?? '');

      /** @var FileSystem $fs */
      $fs = Drupal::service('file_system');
      $fs->prepareDirectory($upload_location, FileSystemInterface::CREATE_DIRECTORY);

      // Overwrite policy: node override > config > FALSE.
      $cfg = Drupal::config('filebrowser.settings')->get('filebrowser') ?: [];
      $allowOverwrite = isset($node_fb->allowOverwrite)
        ? (bool)$node_fb->allowOverwrite
        : (bool)($cfg['uploads']['allow_overwrite'] ?? FALSE);
      $mode = $this->existsMode($allowOverwrite);

      foreach (File::loadMultiple($fids) as $file) {
        $src  = $file->getFileUri();
        $dest = $this->common->joinURI($upload_location, $file->getFilename());
        try {
          $fs->copy($src, $dest, $mode);
          $file->delete();
        } catch (\Throwable $e) {
          $this->messenger()->addError($this->t('Failed to store %name: %msg', [
            '%name' => $file->getFilename(),
            '%msg' => $e->getMessage(),
          ]));
        }
      }
      $this->messenger()->addMessage($this->t('Your Filebrowser upload completed successfully.'));
    }
    // invalidate the cache for this node
    Cache::invalidateTags(['filebrowser:node:' . $this->nid]);

    $route = $this->common->redirectRoute($this->queryFid, $this->node?->id() ?? $this->nid);
    $form_state->setRedirect($route['name'], $route['node'], $route['query']);
  }

  /**
   * Prepare for deprecation.
   */
  private function existsMode(bool $allowOverwrite) {
    if (class_exists(FileExists::class)) {
      // Drupal ≥ 10.3: prefer the enum.
      return $allowOverwrite ? FileExists::Replace : FileExists::Rename;
    }
    // Drupal < 10.3: fall back to legacy constants.
    return $allowOverwrite
      ? FileSystemInterface::EXISTS_REPLACE
      : FileSystemInterface::EXISTS_RENAME;
  }

}