phorge-phorge/src/applications/phriction/controller/PhrictionMoveController.php

<?php

/**
 * @group phriction
 */
final class PhrictionMoveController
  extends PhrictionController {

  private $id;

  public function willProcessRequest(array $data) {
    $this->id = idx($data, 'id');
  }

  public function processRequest() {
    $request = $this->getRequest();
    $user = $request->getUser();
    $is_serious = PhabricatorEnv::getEnvConfig('phabricator.serious-business');

    if ($this->id) {
      $document = id(new PhrictionDocument())->load($this->id);
    } else {
      $slug = PhabricatorSlug::normalize(
        $request->getStr('slug'));
      if (!$slug) {
        return new Aphront404Response();
      }

      $document = id(new PhrictionDocument())->loadOneWhere(
        'slug = %s',
        $slug);
    }

    if (!$document) {
      return new Aphront404Response();
    }

    if (!isset($slug)) {
      $slug = $document->getSlug();
    }

    $target_slug = PhabricatorSlug::normalize(
      $request->getStr('new-slug', $slug));

    $submit_uri = $request->getRequestURI()->getPath();
    $cancel_uri = PhrictionDocument::getSlugURI($slug);

    $errors = array();
    $error_view = null;
    $e_url = null;
    $e_block = false;

    $disallowed_statuses = array(
      PhrictionDocumentStatus::STATUS_DELETED, // Stupid
      PhrictionDocumentStatus::STATUS_MOVED, // Plain stupid
    );
    if (in_array($document->getStatus(), $disallowed_statuses)) {
      $error_view = new AphrontErrorView();
      $error_view->setSeverity(AphrontErrorView::SEVERITY_ERROR);
      $error_view->appendChild(pht('An already moved or deleted document '.
        'can not be moved again.'));

      $error_dialog = new AphrontDialogView();
      $error_dialog->setUser($user);
      $error_dialog->setTitle("");
      $error_dialog->appendChild($error_view);
      $error_dialog->addCancelButton($cancel_uri, pht('I understand'));

      return id(new AphrontDialogResponse())->setDialog($error_dialog);
    }

    $content = id(new PhrictionContent())->load($document->getContentID());

    if ($request->isFormPost() && !count($errors)) {
      if (!count($errors)) { // First check if the target document exists
        $target_document = id(new PhrictionDocument())->loadOneWhere(
          'slug = %s',
          $target_slug);

        // Considering to overwrite existing docs? Nuke this!
        if ($target_document && $target_document->getStatus() ==
          PhrictionDocumentStatus::STATUS_EXISTS) {

          $errors[] = pht('Can not overwrite existing target document.');
          $e_url = pht('Already exists.');
        }
      }

      if (!count($errors)) { // I like to move it, move it!
        $from_editor = id(PhrictionDocumentEditor::newForSlug($slug))
          ->setActor($user)
          ->setTitle($content->getTitle())
          ->setContent($content->getContent())
          ->setDescription($content->getDescription());

        $target_editor = id(PhrictionDocumentEditor::newForSlug(
          $target_slug))
          ->setActor($user)
          ->setTitle($content->getTitle())
          ->setContent($content->getContent())
          ->setDescription($content->getDescription());

        // Move it!
        $target_editor->moveHere($document->getID());

        // Retrieve the target doc directly from the editor
        // No need to load it per Sql again
        $target_document = $target_editor->getDocument();
        $from_editor->moveAway($target_document->getID());

        $redir_uri = PhrictionDocument::getSlugURI($target_document->getSlug());
        return id(new AphrontRedirectResponse())->setURI($redir_uri);
      }
    }

    if ($errors) {
      $error_view = id(new AphrontErrorView())
        ->setTitle(pht('Form Errors'))
        ->setErrors($errors);
    }

    $descr_caption = $is_serious ? pht('A reason for the move.') :
      pht('You better give a good reason for this.');

    if ($request->isAjax()) {
      $form = new AphrontFormLayoutView();
    } else {
      $form = new AphrontFormView();
      $form->setAction($submit_uri)
        // Append title so the user can verify that he's touching
        // the right document
        ->appendChild(
          id(new AphrontFormStaticControl())
            ->setLabel(pht('Title'))
            ->setValue($content->getTitle()));
    }

    $form
      ->setUser($user)
      ->appendChild(
        id(new AphrontFormTextControl())
          ->setLabel(pht('New URI'))
          ->setValue($target_slug)
          ->setError($e_url)
          ->setName('new-slug')
          ->setCaption(pht('The new location of the document.')))
      ->appendChild(
        id(new AphrontFormTextControl())
          ->setLabel(pht('Edit Notes'))
          ->setValue($content->getDescription())
          ->setError(null)
          ->setName('description')
          ->setCaption($descr_caption));

    if ($request->isAjax()) {
      $dialog = new AphrontDialogView();
      $dialog->setUser($user);
      $dialog->setTitle(pht('Move Document'));
      $dialog->appendChild($form);
      $dialog->setSubmitURI($submit_uri);
      $dialog->addSubmitButton(pht('Move Document'));
      $dialog->addCancelButton($cancel_uri);

      return id(new AphrontDialogResponse())->setDialog($dialog);
    } else {
      $form->appendChild(
        id(new AphrontFormSubmitControl())
          ->addCancelButton($cancel_uri)
          ->setValue(pht('Move Document'))
          ->setDisabled($e_block));

      $panel = id(new AphrontPanelView())
        ->setNoBackground()
        ->setHeader(pht('Move Phriction Document'))
        ->appendChild($form);

      return $this->buildApplicationPage(
        array(
          $error_view,
          $panel,
        ),
        array(
          'title' => pht('Move Document'),
          'device' => true,
        ));
    }
  }
}