224 lines
		
	
	
	
		
			9.2 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			224 lines
		
	
	
	
		
			9.2 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/*
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 +--------------------------------------------------------------------+
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 | CiviCRM version 4.7                                                |
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 +--------------------------------------------------------------------+
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 | Copyright CiviCRM LLC (c) 2004-2017                                |
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 +--------------------------------------------------------------------+
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 | This file is a part of CiviCRM.                                    |
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 |                                                                    |
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 | CiviCRM is free software; you can copy, modify, and distribute it  |
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 | under the terms of the GNU Affero General Public License           |
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 | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
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 |                                                                    |
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 | CiviCRM is distributed in the hope that it will be useful, but     |
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 | WITHOUT ANY WARRANTY; without even the implied warranty of         |
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 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
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 | See the GNU Affero General Public License for more details.        |
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 |                                                                    |
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 | You should have received a copy of the GNU Affero General Public   |
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 | License and the CiviCRM Licensing Exception along                  |
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 | with this program; if not, contact CiviCRM LLC                     |
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 | at info[AT]civicrm[DOT]org. If you have questions about the        |
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 | GNU Affero General Public License or the licensing of CiviCRM,     |
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 | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
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 +--------------------------------------------------------------------+
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 */
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namespace Civi\API\Subscriber;
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use Civi\API\Events;
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use Symfony\Component\EventDispatcher\EventSubscriberInterface;
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/**
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 * The ChainSubscriber looks for API parameters which specify a nested or
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 * chained API call. For example:
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 *
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 * @code
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 * $result = civicrm_api('Contact', 'create', array(
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 *   'version' => 3,
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 *   'first_name' => 'Amy',
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 *   'api.Email.create' => array(
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 *     'email' => 'amy@example.com',
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 *     'location_type_id' => 123,
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 *   ),
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 * ));
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 * @endcode
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 *
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 * The ChainSubscriber looks for any parameters of the form "api.Email.create";
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 * if found, it issues the nested API call (and passes some extra context --
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 * eg Amy's contact_id).
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 */
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class ChainSubscriber implements EventSubscriberInterface {
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  /**
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   * @return array
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   */
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  public static function getSubscribedEvents() {
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    return array(
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      Events::RESPOND => array('onApiRespond', Events::W_EARLY),
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    );
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  }
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  /**
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   * @param \Civi\API\Event\RespondEvent $event
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   *   API response event.
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   *
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   * @throws \Exception
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   */
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  public function onApiRespond(\Civi\API\Event\RespondEvent $event) {
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    $apiRequest = $event->getApiRequest();
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    if ($apiRequest['version'] < 4) {
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      $result = $event->getResponse();
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      if (\CRM_Utils_Array::value('is_error', $result, 0) == 0) {
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        $this->callNestedApi($event->getApiKernel(), $apiRequest['params'], $result, $apiRequest['action'], $apiRequest['entity'], $apiRequest['version']);
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        $event->setResponse($result);
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      }
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    }
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  }
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  /**
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   * Call any nested api calls.
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   *
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   * TODO: We don't really need this to be a separate function.
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   * @param \Civi\API\Kernel $apiKernel
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   * @param $params
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   * @param $result
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   * @param $action
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   * @param $entity
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   * @param $version
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   * @throws \Exception
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   */
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  protected function callNestedApi($apiKernel, &$params, &$result, $action, $entity, $version) {
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    $lowercase_entity = _civicrm_api_get_entity_name_from_camel($entity);
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    // We don't need to worry about nested api in the getfields/getoptions
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    // actions, so just return immediately.
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    if (in_array($action, array('getfields', 'getfield', 'getoptions'))) {
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      return;
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    }
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    if ($action == 'getsingle') {
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      // I don't understand the protocol here, but we don't want
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      // $result to be a recursive array
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      // $result['values'][0] = $result;
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      $oldResult = $result;
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      $result = array('values' => array(0 => $oldResult));
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    }
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    foreach ($params as $field => $newparams) {
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      if ((is_array($newparams) || $newparams === 1) && $field <> 'api.has_parent' && substr($field, 0, 3) == 'api') {
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        // 'api.participant.delete' => 1 is a valid options - handle 1
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        // instead of an array
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        if ($newparams === 1) {
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          $newparams = array('version' => $version);
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        }
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        // can be api_ or api.
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        $separator = $field[3];
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        if (!($separator == '.' || $separator == '_')) {
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          continue;
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        }
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        $subAPI = explode($separator, $field);
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        $subaction = empty($subAPI[2]) ? $action : $subAPI[2];
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        $subParams = array(
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          'debug' => \CRM_Utils_Array::value('debug', $params),
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        );
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        $subEntity = _civicrm_api_get_entity_name_from_camel($subAPI[1]);
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        // Hard coded list of entitys that have fields starting api_ and shouldn't be automatically
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        // deemed to be chained API calls
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        $skipList = array(
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          'SmsProvider' => array('type', 'url', 'params'),
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          'Job' => array('prefix', 'entity', 'action'),
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          'Contact' => array('key'),
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        );
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        if (isset($skipList[$entity]) && in_array($subEntity, $skipList[$entity])) {
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          continue;
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        }
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        foreach ($result['values'] as $idIndex => $parentAPIValues) {
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          if ($subEntity != 'contact') {
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            //contact spits the dummy at activity_id so what else won't it like?
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            //set entity_id & entity table based on the parent's id & entity.
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            //e.g for something like note if the parent call is contact
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            //'entity_table' will be set to 'contact' & 'id' to the contact id
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            //from the parent call. in this case 'contact_id' will also be
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            //set to the parent's id
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            if (!($subEntity == 'line_item' && $lowercase_entity == 'contribution' && $action != 'create')) {
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              $subParams["entity_id"] = $parentAPIValues['id'];
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              $subParams['entity_table'] = 'civicrm_' . $lowercase_entity;
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            }
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            $addEntityId = TRUE;
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            if ($subEntity == 'relationship' && $lowercase_entity == 'contact') {
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              // if a relationship call is chained to a contact call, we need
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              // to check whether contact_id_a or contact_id_b for the
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              // relationship is given. If so, don't add an extra subParam
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              // "contact_id" => parent_id.
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              // See CRM-16084.
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              foreach (array_keys($newparams) as $key) {
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                if (substr($key, 0, 11) == 'contact_id_') {
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                  $addEntityId = FALSE;
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                  break;
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                }
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              }
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            }
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            if ($addEntityId) {
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              $subParams[$lowercase_entity . "_id"] = $parentAPIValues['id'];
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            }
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          }
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          if ($entity != 'Contact' && \CRM_Utils_Array::value(strtolower($subEntity . "_id"), $parentAPIValues)) {
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            //e.g. if event_id is in the values returned & subentity is event
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            //then pass in event_id as 'id' don't do this for contact as it
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            //does some weird things like returning primary email &
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            //thus limiting the ability to chain email
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            //TODO - this might need the camel treatment
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            $subParams['id'] = $parentAPIValues[$subEntity . "_id"];
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          }
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          if (\CRM_Utils_Array::value('entity_table', $result['values'][$idIndex]) == $subEntity) {
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            $subParams['id'] = $result['values'][$idIndex]['entity_id'];
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          }
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          // if we are dealing with the same entity pass 'id' through
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          // (useful for get + delete for example)
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          if ($lowercase_entity == $subEntity) {
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            $subParams['id'] = $result['values'][$idIndex]['id'];
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          }
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          $subParams['version'] = $version;
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          if (!empty($params['check_permissions'])) {
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            $subParams['check_permissions'] = $params['check_permissions'];
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          }
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          $subParams['sequential'] = 1;
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          $subParams['api.has_parent'] = 1;
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          if (array_key_exists(0, $newparams)) {
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            $genericParams = $subParams;
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            // it is a numerically indexed array - ie. multiple creates
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            foreach ($newparams as $entityparams) {
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              $subParams = array_merge($genericParams, $entityparams);
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              _civicrm_api_replace_variables($subParams, $result['values'][$idIndex], $separator);
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              $result['values'][$idIndex][$field][] = $apiKernel->run($subEntity, $subaction, $subParams);
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              if ($result['is_error'] === 1) {
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                throw new \Exception($subEntity . ' ' . $subaction . 'call failed with' . $result['error_message']);
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              }
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            }
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          }
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          else {
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            $subParams = array_merge($subParams, $newparams);
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            _civicrm_api_replace_variables($subParams, $result['values'][$idIndex], $separator);
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            $result['values'][$idIndex][$field] = $apiKernel->run($subEntity, $subaction, $subParams);
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            if (!empty($result['is_error'])) {
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              throw new \Exception($subEntity . ' ' . $subaction . 'call failed with' . $result['error_message']);
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            }
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          }
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        }
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      }
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    }
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    if ($action == 'getsingle') {
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      $result = $result['values'][0];
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    }
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  }
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}
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