<?php
/*
 +--------------------------------------------------------------------+
 | CiviCRM version 4.7                                                |
 +--------------------------------------------------------------------+
 | Copyright CiviCRM LLC (c) 2004-2016                                |
 +--------------------------------------------------------------------+
 | This file is a part of CiviCRM.                                    |
 |                                                                    |
 | CiviCRM is free software; you can copy, modify, and distribute it  |
 | under the terms of the GNU Affero General Public License           |
 | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
 |                                                                    |
 | CiviCRM is distributed in the hope that it will be useful, but     |
 | WITHOUT ANY WARRANTY; without even the implied warranty of         |
 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
 | See the GNU Affero General Public License for more details.        |
 |                                                                    |
 | You should have received a copy of the GNU Affero General Public   |
 | License and the CiviCRM Licensing Exception along                  |
 | with this program; if not, contact CiviCRM LLC                     |
 | at info[AT]civicrm[DOT]org. If you have questions about the        |
 | GNU Affero General Public License or the licensing of CiviCRM,     |
 | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
 +--------------------------------------------------------------------+
 */

/**
 *
 * @package CRM
 * @copyright CiviCRM LLC (c) 2004-2016
 * $Id$
 *
 */
class CRM_Core_BAO_OptionGroup extends CRM_Core_DAO_OptionGroup {

  /**
   * Class constructor.
   */
  public function __construct() {
    parent::__construct();
  }

  /**
   * Fetch object based on array of properties.
   *
   * @param array $params
   *   (reference ) an assoc array of name/value pairs.
   * @param array $defaults
   *   (reference ) an assoc array to hold the flattened values.
   *
   * @return CRM_Core_BAO_OptionGroup
   */
  public static function retrieve(&$params, &$defaults) {
    $optionGroup = new CRM_Core_DAO_OptionGroup();
    $optionGroup->copyValues($params);
    if ($optionGroup->find(TRUE)) {
      CRM_Core_DAO::storeValues($optionGroup, $defaults);
      return $optionGroup;
    }
    return NULL;
  }

  /**
   * Update the is_active flag in the db.
   *
   * @param int $id
   *   Id of the database record.
   * @param bool $is_active
   *   Value we want to set the is_active field.
   *
   * @return Object
   *   DAO object on success, null otherwise
   */
  public static function setIsActive($id, $is_active) {
    return CRM_Core_DAO::setFieldValue('CRM_Core_DAO_OptionGroup', $id, 'is_active', $is_active);
  }

  /**
   * Add the Option Group.
   *
   * @param array $params
   *   Reference array contains the values submitted by the form.
   * @param array $ids
   *   Reference array contains the id.
   *
   *
   * @return object
   */
  public static function add(&$params, $ids = array()) {
    if (empty($params['id'])) {
      $params['id'] = CRM_Utils_Array::value('optionGroup', $ids);
    }

    $params['is_active'] = CRM_Utils_Array::value('is_active', $params, FALSE);
    $params['is_default'] = CRM_Utils_Array::value('is_default', $params, FALSE);

    // action is taken depending upon the mode
    $optionGroup = new CRM_Core_DAO_OptionGroup();
    $optionGroup->copyValues($params);;

    if ($params['is_default']) {
      $query = "UPDATE civicrm_option_group SET is_default = 0";
      CRM_Core_DAO::executeQuery($query);
    }

    $optionGroup->save();
    return $optionGroup;
  }

  /**
   * Delete Option Group.
   *
   * @param int $optionGroupId
   *   Id of the Option Group to be deleted.
   */
  public static function del($optionGroupId) {
    // need to delete all option value field before deleting group
    $optionValue = new CRM_Core_DAO_OptionValue();
    $optionValue->option_group_id = $optionGroupId;
    $optionValue->delete();

    $optionGroup = new CRM_Core_DAO_OptionGroup();
    $optionGroup->id = $optionGroupId;
    $optionGroup->delete();
  }

  /**
   * Get title of the option group.
   *
   * @param int $optionGroupId
   *   Id of the Option Group.
   *
   * @return string
   *   title
   */
  public static function getTitle($optionGroupId) {
    $optionGroup = new CRM_Core_DAO_OptionGroup();
    $optionGroup->id = $optionGroupId;
    $optionGroup->find(TRUE);
    return $optionGroup->name;
  }

  /**
   * Get DataType for a specified option Group
   *
   * @param int $optionGroupId
   *   Id of the Option Group.
   *
   * @return string|null
   *   Data Type
   */
  public static function getDataType($optionGroupId) {
    $optionGroup = new CRM_Core_DAO_OptionGroup();
    $optionGroup->id = $optionGroupId;
    $optionGroup->find(TRUE);
    return $optionGroup->data_type;
  }

  /**
   * Ensure an option group exists.
   *
   * This function is intended to be called from the upgrade script to ensure
   * that an option group exists, without hitting an error if it already exists.
   *
   * This is sympathetic to sites who might pre-add it.
   *
   * @param array $params
   *
   * @return int
   *   ID of the option group.
   */
  public static function ensureOptionGroupExists($params) {
    $existingValues = civicrm_api3('OptionGroup', 'get', array(
      'name' => $params['name'],
    ));
    if (!$existingValues['count']) {
      $result = civicrm_api3('OptionGroup', 'create', $params);
      return $result['id'];
    }
    else {
      return $existingValues['id'];
    }
  }

}