<?php

define('CER_PROFILE2_PATTERN', '/^user:user:profile_/');

/**
 * Returns if either side of a preset refers to a profile2.
 *
 * @param \CerPreset $preset
 *  The preset to test.
 *
 * @return bool
 */
function _cer_profile2_is_profile2_preset(CerPreset $preset) {
  return preg_match(CER_PROFILE2_PATTERN, $preset->wrapper->cer_left->value()) || preg_match(CER_PROFILE2_PATTERN, $preset->wrapper->cer_right->value());
}

/**
 * Implements hook_entity_property_info_alter().
 */
function cer_profile2_entity_property_info_alter(array &$info) {
  $struct = &$info['profile2']['properties']['cer']['property info'];

  $struct['lineage']['getter callback'] = 'cer_profile2_get_profile2_lineage';
  $struct['depth']['getter callback'] = 'cer_profile2_get_profile2_depth';
  $struct['owner']['getter callback'] = 'cer_profile2_get_profile2_owner';
}

/**
 * Entity API getter callback. Returns the lineage of a Profile2 entity.
 *
 * @return string
 */
function cer_profile2_get_profile2_lineage(array $data, array $options, $property, $data_type, array $info) {
  return 'user:user:profile_' . $data[1]->type . ':profile2:' . $data[1]->type . ':';
}

/**
 * Entity API getter callback. Returns the depth of a Profile2. This is always
 * 1, since the profile is embedded directly under the user account as far
 * as CER is concerned.
 *
 * @return integer
 */
function cer_profile2_get_profile2_depth(array $data, array $options, $property, $data_type, array $info) {
  return 1;
}

/**
 * Entity API getter callback. Returns the user account which owns a Profile2.
 *
 * @return EntityDrupalWrapper.
 */
function cer_profile2_get_profile2_owner(array $data, array $options, $property, $data_type, array $info) {
  return new EntityDrupalWrapper('user', $data[1]->user());
}