<?php

final class PhabricatorProjectSearchEngine
  extends PhabricatorApplicationSearchEngine {

  public function getCustomFieldObject() {
    return new PhabricatorProject();
  }

  public function buildSavedQueryFromRequest(AphrontRequest $request) {
    $saved = new PhabricatorSavedQuery();

    $saved->setParameter(
      'memberPHIDs',
      $this->readUsersFromRequest($request, 'members'));
    $saved->setParameter('status', $request->getStr('status'));

    $this->readCustomFieldsFromRequest($request, $saved);

    return $saved;
  }

  public function buildQueryFromSavedQuery(PhabricatorSavedQuery $saved) {
    $query = id(new PhabricatorProjectQuery())
      ->needImages(true);

    $member_phids = $saved->getParameter('memberPHIDs', array());
    if ($member_phids && is_array($member_phids)) {
      $query->withMemberPHIDs($member_phids);
    }

    $status = $saved->getParameter('status');
    $status = idx($this->getStatusValues(), $status);
    if ($status) {
      $query->withStatus($status);
    }

    $this->applyCustomFieldsToQuery($query, $saved);

    return $query;
  }

  public function buildSearchForm(
    AphrontFormView $form,
    PhabricatorSavedQuery $saved) {

    $phids = $saved->getParameter('memberPHIDs', array());
    $member_handles = id(new PhabricatorHandleQuery())
      ->setViewer($this->requireViewer())
      ->withPHIDs($phids)
      ->execute();

    $status = $saved->getParameter('status');

    $form
      ->appendChild(
        id(new AphrontFormTokenizerControl())
          ->setDatasource('/typeahead/common/users/')
          ->setName('members')
          ->setLabel(pht('Members'))
          ->setValue($member_handles))
      ->appendChild(
        id(new AphrontFormSelectControl())
          ->setLabel(pht('Status'))
          ->setName('status')
          ->setOptions($this->getStatusOptions())
          ->setValue($status));

    $this->appendCustomFieldsToForm($form, $saved);
  }

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

  public 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'),
      'all'    => pht('Show All Projects'),
    );
  }

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

}