<?php

final class PhabricatorProjectSearchEngine
  extends PhabricatorApplicationSearchEngine {

  public function getResultTypeDescription() {
    return pht('Projects');
  }

  public function getApplicationClassName() {
    return 'PhabricatorProjectApplication';
  }

  public function newQuery() {
    return id(new PhabricatorProjectQuery())
      ->needImages(true);
  }

  protected function buildCustomSearchFields() {
    return array(
      id(new PhabricatorSearchTextField())
        ->setLabel(pht('Name'))
        ->setKey('name'),
      id(new PhabricatorSearchUsersField())
        ->setLabel(pht('Members'))
        ->setKey('memberPHIDs')
        ->setAliases(array('member', 'members')),
      id(new PhabricatorSearchSelectField())
        ->setLabel(pht('Status'))
        ->setKey('status')
        ->setOptions($this->getStatusOptions()),
      id(new PhabricatorSearchCheckboxesField())
        ->setLabel(pht('Icons'))
        ->setKey('icons')
        ->setOptions($this->getIconOptions()),
      id(new PhabricatorSearchCheckboxesField())
        ->setLabel(pht('Colors'))
        ->setKey('colors')
        ->setOptions($this->getColorOptions()),
    );
  }


  public function buildQueryFromParameters(array $map) {
    $query = $this->newQuery();

    if (strlen($map['name'])) {
      $tokens = PhabricatorTypeaheadDatasource::tokenizeString($map['name']);
      $query->withNameTokens($tokens);
    }

    if ($map['memberPHIDs']) {
      $query->withMemberPHIDs($map['memberPHIDs']);
    }

    if ($map['status']) {
      $status = idx($this->getStatusValues(), $map['status']);
      if ($status) {
        $query->withStatus($status);
      }
    }

    if ($map['icons']) {
      $query->withIcons($map['icons']);
    }

    if ($map['colors']) {
      $query->withColors($map['colors']);
    }

    return $query;
  }

  protected function getURI($path) {
    return '/project/'.$path;
  }

  protected function getBuiltinQueryNames() {
    $names = array();

    if ($this->requireViewer()->isLoggedIn()) {
      $names['joined'] = pht('Joined');
    }

    $names['active'] = pht('Active');
    $names['all'] = pht('All');

    return $names;
  }

  public function buildSavedQueryFromBuiltin($query_key) {
    $query = $this->newSavedQuery();
    $query->setQueryKey($query_key);

    $viewer_phid = $this->requireViewer()->getPHID();

    switch ($query_key) {
      case 'all':
        return $query;
      case 'active':
        return $query
          ->setParameter('status', 'active');
      case 'joined':
        return $query
          ->setParameter('memberPHIDs', array($viewer_phid))
          ->setParameter('status', 'active');
    }

    return parent::buildSavedQueryFromBuiltin($query_key);
  }

  private function getStatusOptions() {
    return array(
      'active'   => pht('Show Only Active Projects'),
      'archived' => pht('Show Only Archived Projects'),
      'all'      => pht('Show All Projects'),
    );
  }

  private function getStatusValues() {
    return array(
      'active'   => PhabricatorProjectQuery::STATUS_ACTIVE,
      'archived' => PhabricatorProjectQuery::STATUS_ARCHIVED,
      'all'      => PhabricatorProjectQuery::STATUS_ANY,
    );
  }

  private function getIconOptions() {
    $options = array();

    foreach (PhabricatorProjectIcon::getIconMap() as $icon => $name) {
      $options[$icon] = array(
        id(new PHUIIconView())
          ->setIconFont($icon),
        ' ',
        $name,
      );
    }

    return $options;
  }

  private function getColorOptions() {
    $options = array();

    foreach (PhabricatorProjectIcon::getColorMap() as $color => $name) {
      $options[$color] = array(
        id(new PHUITagView())
          ->setType(PHUITagView::TYPE_SHADE)
          ->setShade($color)
          ->setName($name),
        ' ',
        $name,
      );
    }

    return $options;
  }

  protected function renderResultList(
    array $projects,
    PhabricatorSavedQuery $query,
    array $handles) {
    assert_instances_of($projects, 'PhabricatorProject');
    $viewer = $this->requireViewer();
    $handles = $viewer->loadHandles(mpull($projects, 'getPHID'));

    $list = new PHUIObjectItemListView();
    $list->setUser($viewer);
    $can_edit_projects = id(new PhabricatorPolicyFilter())
      ->setViewer($viewer)
      ->requireCapabilities(array(PhabricatorPolicyCapability::CAN_EDIT))
      ->apply($projects);

    foreach ($projects as $key => $project) {
      $id = $project->getID();

      $tag_list = id(new PHUIHandleTagListView())
        ->setSlim(true)
        ->setHandles(array($handles[$project->getPHID()]));

      $item = id(new PHUIObjectItemView())
        ->setHeader($project->getName())
        ->setHref($this->getApplicationURI("view/{$id}/"))
        ->setImageURI($project->getProfileImageURI())
        ->addAttribute($tag_list);

      if ($project->getStatus() == PhabricatorProjectStatus::STATUS_ARCHIVED) {
        $item->addIcon('delete-grey', pht('Archived'));
        $item->setDisabled(true);
      }

      $list->addItem($item);
    }

    return $list;
  }

}