<?php

final class PhragmentBrowseController extends PhragmentController {

  private $dblob;

  public function shouldAllowPublic() {
    return true;
  }

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

  public function processRequest() {
    $request = $this->getRequest();
    $viewer = $request->getUser();

    $parents = $this->loadParentFragments($this->dblob);
    if ($parents === null) {
      return new Aphront404Response();
    }
    $current = nonempty(last($parents), null);

    $path = '';
    if ($current !== null) {
      $path = $current->getPath();
    }

    $crumbs = $this->buildApplicationCrumbsWithPath($parents);
    if ($this->hasApplicationCapability(
      PhragmentCanCreateCapability::CAPABILITY)) {
      $crumbs->addAction(
        id(new PHUIListItemView())
          ->setName(pht('Create Fragment'))
          ->setHref($this->getApplicationURI('/create/'.$path))
          ->setIcon('fa-plus-square'));
    }

    $current_box = $this->createCurrentFragmentView($current, false);

    $list = id(new PHUIObjectItemListView())
      ->setUser($viewer);

    $fragments = null;
    if ($current === null) {
      // Find all root fragments.
      $fragments = id(new PhragmentFragmentQuery())
        ->setViewer($this->getRequest()->getUser())
        ->needLatestVersion(true)
        ->withDepths(array(1))
        ->execute();
    } else {
      // Find all child fragments.
      $fragments = id(new PhragmentFragmentQuery())
        ->setViewer($this->getRequest()->getUser())
        ->needLatestVersion(true)
        ->withLeadingPath($current->getPath().'/')
        ->withDepths(array($current->getDepth() + 1))
        ->execute();
    }

    foreach ($fragments as $fragment) {
      $item = id(new PHUIObjectItemView());
      $item->setHeader($fragment->getName());
      $item->setHref($fragment->getURI());
      if (!$fragment->isDirectory()) {
        $item->addAttribute(pht(
          'Last Updated %s',
          phabricator_datetime(
            $fragment->getLatestVersion()->getDateCreated(),
            $viewer)));
        $item->addAttribute(pht(
          'Latest Version %s',
          $fragment->getLatestVersion()->getSequence()));
        if ($fragment->isDeleted()) {
          $item->setDisabled(true);
          $item->addAttribute(pht('Deleted'));
        }
      } else {
        $item->addAttribute('Directory');
      }
      $list->addItem($item);
    }

    return $this->buildApplicationPage(
      array(
        $crumbs,
        $this->renderConfigurationWarningIfRequired(),
        $current_box,
        $list,
      ),
      array(
        'title' => pht('Browse Fragments'),
      ));
  }

}