<?php

/*
 +--------------------------------------------------------------------+
 | CiviCRM version 5                                                  |
 +--------------------------------------------------------------------+
 | Copyright CiviCRM LLC (c) 2004-2019                                |
 +--------------------------------------------------------------------+
 | 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) 2004-2019
 * $Id$
 *
 */


namespace Civi\Api4\Event\Subscriber;

use Civi\Api4\Event\Events;
use Civi\Api4\Event\SchemaMapBuildEvent;
use Civi\Api4\Service\Schema\Joinable\Joinable;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

class ContactSchemaMapSubscriber implements EventSubscriberInterface {

  /**
   * @return array
   */
  public static function getSubscribedEvents() {
    return [
      Events::SCHEMA_MAP_BUILD => 'onSchemaBuild',
    ];
  }

  /**
   * @param \Civi\Api4\Event\SchemaMapBuildEvent $event
   */
  public function onSchemaBuild(SchemaMapBuildEvent $event) {
    $schema = $event->getSchemaMap();
    $table = $schema->getTableByName('civicrm_contact');
    $this->addCreatedActivitiesLink($table);
    $this->fixPreferredLanguageAlias($table);
  }

  /**
   * @param \Civi\Api4\Service\Schema\Table $table
   */
  private function addCreatedActivitiesLink($table) {
    $alias = 'created_activities';
    $joinable = new Joinable('civicrm_activity_contact', 'contact_id', $alias);
    $joinable->addCondition($alias . '.record_type_id = 1');
    $joinable->setJoinType($joinable::JOIN_TYPE_ONE_TO_MANY);
    $table->addTableLink('id', $joinable);
  }

  /**
   * @param \Civi\Api4\Service\Schema\Table $table
   */
  private function fixPreferredLanguageAlias($table) {
    foreach ($table->getExternalLinks() as $link) {
      if ($link->getAlias() === 'languages') {
        $link->setAlias('preferred_language');
        return;
      }
    }
  }

}