<?php

/**
 * Implements hook_views_default_views_alter().
 * 
 * Replace uuid fields with wcm identifiers
 * 
 * @param $views
 */
function emonocot_dwca_views_default_views_alter(&$views){
  foreach($views as $view){
    //Is this a dwca_export view? and not comments or eol agents?
    if(substr($view->name, 0, 11) == 'dwca_export' && $view->name != 'dwca_export_eol_agents' && $view->name != 'dwca_export_comment'){
      if(isset($view->display['default']->display_options['fields']['uuid'])){
        //Hide uuid field
        $view->display['default']->display_options['fields']['uuid']['exclude'] = TRUE;
        emonocot_dwca_add_wcm_field($view);
        //If a relationship is set on uuid field make same relatinship on wcm field
        if(isset($view->display['default']->display_options['fields']['uuid']['relationship'])){
          $view->display['default']->display_options['fields']['wcm_id']['relationship'] = $view->display['default']->display_options['fields']['uuid']['relationship'];
        }
      }
      //The classification dwca_export view has a parent taxonomy field, uuid_1
      if(isset($view->display['default']->display_options['fields']['uuid_1']) && $view->name == 'dwca_export_classification'){
        //Preserve the relationship
        $relationship = NULL;
        if(isset($view->display['default']->display_options['fields']['uuid_1']['relationship'])){
          $relationship = $view->display['default']->display_options['fields']['uuid_1']['relationship'];
        }
        $view->display['default']->display_options['fields']['uuid_1']['exclude'] = TRUE;
        emonocot_dwca_add_wcm_parent_field($view);
        if(!is_null($relationship)){
          $view->display['default']->display_options['fields']['wcm_id_1']['relationship'] = $relationship;
        }
        $view->display['default']->display_options['fields']['wcm_id_1']['label'] = 'Parent ID';
        $view->display['default']->display_options['fields']['wcm_id_1']['exclude'] = TRUE;
        $view->display['default']->display_options['fields']['field_unacceptability_reason_1']['empty'] = '[wcm_id_1]';
        $view->display['default']->display_options['fields']['citation']['exclude'] = TRUE;
        $view->display['default']->display_options['fields']['field_unacceptability_reason_5']['type'] = 'parent_formatter_em';
        $view->display['default']->display_options['fields']['field_unacceptability_reason_3']['type'] = 'aan_formatter_em';
        
        $insert = array();
        $insert['protologue']  = emonocot_dwca_protologue_field();
        $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'citation');
        
        //Associated accepted name: change identifier
        $view->display['default']->display_options['fields']['field_unacceptability_reason_3']['alter']['text'] = '[wcm_id_1]';
      }
    }
    //Sort out protologue links in references.txt

    if ($view->name == 'dwca_export_reference'){
    	//Source     field_reference  -> emonocot_source
    	//Related    nothing          -> field_reference
    	$related = $view->display['default']->display_options['fields']['field_reference'];
    	unset($view->display['default']->display_options['fields']['field_reference']);
    	unset($view->display['default']->display_options['fields']['nothing']);
    	$view->display['default']->display_options['fields']['dcsource'] = emonocot_dwca_source_field();
    	$view->display['default']->display_options['fields']['dcrelated'] = $related;

    }
    
    if ($view->name == 'dwca_export_image'){
      $view->display['default']->display_options['fields']['uuid_1']['exclude'] = TRUE;
      $view->display['default']->display_options['fields']['uuid']['exclude'] = TRUE;
      $view->display['default']->display_options['fields']['wcm_id']['exclude'] = TRUE;
        
    }
    
    //For description references change Rights field to associated Biblio nodes rights
    if(substr($view->name, 0, 23) == 'dwca_export_description'){
      $field_matching = array(
        'dwca_export_description_genera' => 'field_spm_em_gd_ref',
        'dwca_export_description_morpho' => 'field_spm_em_morph_ref',
        'dwca_export_description_behavi' => 'field_spm_em_beha_ref',
        'dwca_export_description_biolog' => 'field_spm_em_bio_ref',
        'dwca_export_description_conser' => 'field_spm_em_cs_ref',
        'dwca_export_description_legisl' => 'field_spm_em_leg_ref',
        'dwca_export_description_manage' => 'field_spm_em_manage_ref',
        'dwca_export_description_proced' => 'field_spm_em_proc_ref',
        'dwca_export_description_threat' => 'field_spm_em_threats_ref',
        'dwca_export_description_associ' => 'field_spm_em_assoc',
        'dwca_export_description_cyclic' => 'field_spm_em_cyclicity_ref',
        'dwca_export_description_diagno' => 'field_spm_em_dd_ref',
        'dwca_export_description_diseas' => 'field_spm_em_diseases_ref',
        'dwca_export_description_disper' => 'field_spm_em_dispersal_ref',
        'dwca_export_description_distri' => 'field_spm_em_distribution_ref',
        'dwca_export_description_ecolog' => 'field_spm_em_ecology_ref',
        'dwca_export_description_evolut' => 'field_spm_em_evo_ref',
        'dwca_export_description_geneti' => 'field_spm_em_genetics_ref',
        'dwca_export_description_growth' => 'field_spm_em_growth_ref',
        'dwca_export_description_habita' => 'field_spm_em_habitat_ref',
        'dwca_export_description_life_c' => 'field_spm_em_lc_ref',
        'dwca_export_description_life_e' => 'field_spm_em_le_ref',
        'dwca_export_description_look_a' => 'field_spm_em_la_ref',
        'dwca_export_description_migrat' => 'field_spm_em_migration_ref',
        'dwca_export_description_molecu' => 'field_spm_em_mb_ref',
        'dwca_export_description_pysiol' => 'field_sm_em_phys_ref',
        'dwca_export_description_popula' => 'field_spm_em_popbio_ref',
        'dwca_export_description_reprod' => 'field_spm_em_popbio_ref',
        'dwca_export_description_risk_s' => 'field_spm_em_rs_ref',
        'dwca_export_description_size' => 'field_spm_em_size_ref',
        'dwca_export_description_taxonb' => 'field_spm_em_tb_ref',
        'dwca_export_description_trophi' => 'field_spm_em_ts_ref',
        'dwca_export_description_uses' => 'field_spm_em_uses_ref'
      );
      if(isset($field_matching[$view->name])){
        $view->display['default']->display_options['fields']['nothing']['exclude'] = TRUE;
        $view->display['default']->display_options['fields']['nothing_1']['exclude'] = TRUE;
        $view->display['default']->display_options['fields']['licence']['exclude'] = TRUE;
        $view->display['default']->display_options['fields']['path']['exclude'] = TRUE;
        $view->display['default']->display_options['fields']['nothing_7']['alter']['text'] = '[licence]';
        $view->display['default']->display_options['fields']['nothing_7']['empty'] = '';
        emonocot_dwca_add_description_fields($view, $field_matching[$view->name]);
      }
      //Set license text for descriptions
      $view->display['default']->display_options['fields']['nothing_7']['alter']['text'] = ''; 
    //Preserve the relationship
    /*
        $relationship = NULL;
        if(isset($view->display['default']->display_options['fields']['uuid_1']['relationship'])){
          $relationship = $view->display['default']->display_options['fields']['uuid_1']['relationship'];
        }
        $view->display['default']->display_options['fields']['uuid_1']['exclude'] = TRUE;
        emonocot_dwca_add_wcm_parent_field($view);
        if(!is_null($relationship)){
          $view->display['default']->display_options['fields']['wcm_id_1']['relationship'] = $relationship;
        }
        */
    }
  }
}

function emonocot_dwca_add_description_fields(&$view, $ref_field){
  $new_field = array();
  $new_field['id'] = 'field_emonocot_acknowledgement';
  $new_field['table'] = 'field_data_field_emonocot_acknowledgement';
  $new_field['field'] = 'field_emonocot_acknowledgement';
  $new_field['relationship'] = $ref_field;
  $new_field['label'] = 'Rights';
  $new_field['alter']['alter_text'] = 0;
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['more_link'] = 0;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['hide_empty'] = 0;
  $new_field['empty_zero'] = 0;
  $new_field['hide_alter_empty'] = 1;
  $new_field['field_api_classes'] = 0;
  $insert = array();
  $insert['field_emonocot_acknowledgement'] = $new_field;
  $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'nothing');
  unset($insert);
  unset($new_field);
  $new_field = array();
  $new_field['id'] = 'path_2';
  $new_field['table'] = 'node';
  $new_field['field'] = 'path';
  $new_field['label'] = 'DC Reference';
  $new_field['alter']['alter_text'] = 0;
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['more_link'] = 0;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['hide_empty'] = 0;
  $new_field['empty_zero'] = 0;
  $new_field['hide_alter_empty'] = 1;
  $new_field['absolute'] = 1;
  $insert = array();
  $insert['path_2'] = $new_field;
  $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'path');
  unset($insert);
  unset($new_field);
  $new_field = array();
  $new_field['id'] = 'path_1';
  $new_field['table'] = 'node';
  $new_field['field'] = 'path';
  $new_field['relationship'] = $ref_field;
  $new_field['label'] = 'DC Source';
  $new_field['alter']['alter_text'] = 0;
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['more_link'] = 0;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['hide_empty'] = 1;
  $new_field['empty_zero'] = 0;
  $new_field['empty'] = '';
  $new_field['hide_alter_empty'] = 1;
  $new_field['absolute'] = 1;
  $new_field['exclude'] = TRUE;
  $insert = array();
  $insert['path_1'] = $new_field;
  $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'nothing_1');
  unset($insert);
  unset($new_field);
  /* Field: Content: Nid */
  $new_field = array();
  $new_field['id'] = 'nid';
  $new_field['table'] = 'node';
  $new_field['field'] = 'nid';
  $new_field['relationship'] = $ref_field;
  $new_field['label'] = 'DC Source (Nid check)';
  $new_field['alter']['alter_text'] = 1;
  $new_field['alter']['text'] = '[path_1]';
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['more_link'] = 0;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['hide_empty'] = 1;
  $new_field['empty_zero'] = 0;
  $new_field['hide_alter_empty'] = 1;
  $new_field['link_to_node'] = 0;
  $insert = array();
  $insert['path_1_nid'] = $new_field;
  $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'path_1');
  unset($insert);
  unset($new_field);
  $new_field = array();
  $new_field['id'] = 'field_licence_for_content_derive';
  $new_field['table'] = 'field_data_field_licence_for_content_derive';
  $new_field['field'] = 'field_licence_for_content_derive';
  $new_field['relationship'] = $ref_field;
  $new_field['alter']['alter_text'] = 0;
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['more_link'] = 0;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['hide_empty'] = 0;
  $new_field['empty_zero'] = 0;
  $new_field['hide_alter_empty'] = 1;
  $new_field['type'] = 'creative_commons_url';
  $new_field['field_api_classes'] = 0;
  $insert = array();
  $insert['licence'] = $new_field;
  $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'uuid_4');
  $new_relationship = array();
  $new_relationship['id'] = $ref_field . '_nid';
  $new_relationship['table'] = 'field_data_' . $ref_field;
  $new_relationship['field'] = $ref_field . '_nid';
  $new_relationship['required'] = 0;
  $new_relationship['delta'] = '-1';
  $view->display['default']->display_options['relationships'][$ref_field] = $new_relationship;
}

/**
 * 
 * Adds the WCM-ID field to the dwca_export view
 * 
 * @param $view
 */
function emonocot_dwca_add_wcm_field(&$view){
  $new_field = array();
  $new_field['id'] = 'wcm_id';
  $new_field['field'] = 'field_id';
  $new_field['table'] = 'field_data_field_id';
  $new_field['label'] = 'id';
  $new_field['alter']['alter_text'] = 0;
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['empty'] = '[uuid]';
  $new_field['hide_empty'] = 0;
  $new_field['empty_zero'] = 0;
  $new_field['hide_alter_empty'] = 0;
  $new_field['separator'] = '';
  $new_field['format_plural'] = 0;
  $new_field['field_api_classes'] = 0;

  //array_unshift($view->display['default']->display_options['fields'], $new_field);
 

  $insert = array();
  $insert['wcm_id'] = $new_field;
  $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'uuid');
  unset($insert);
  if($view->name == 'dwca_export_image'){
  	$insert = array();
  	$insert['wcm_id_2'] = emonocot_dwca_add_wcm_image($view);
    $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'uuid_1');
    unset($insert);
  }
}

/**
 * 
 * Adds the WCM-ID field of the parent term to the dwca_export view
 * 
 * @param $view
 */
function emonocot_dwca_add_wcm_parent_field(&$view){
  $new_field = array();
  $new_field['id'] = 'wcm_id_1';
  $new_field['field'] = 'field_id';
  $new_field['table'] = 'field_data_field_id';
  $new_field['label'] = 'id';
  $new_field['alter']['alter_text'] = 0;
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['empty'] = '[uuid_1]';
  $new_field['hide_empty'] = 0;
  $new_field['empty_zero'] = 0;
  $new_field['hide_alter_empty'] = 0;
  $new_field['separator'] = '';
  $new_field['format_plural'] = 0;
  $new_field['field_api_classes'] = 0;
  //array_unshift($view->display['default']->display_options['fields'], $new_field);
  //$view->display['default']->display_options['fields']['wcm_id_1'] = $new_field;
  $insert = array();
  $insert['wcm_id_1'] = $new_field;
  $view->display['default']->display_options['fields'] = _emonocot_dwca_insert_after_in_array($view->display['default']->display_options['fields'], $insert, 'uuid_1');
  unset($insert);
}

function emonocot_dwca_source_field(){
 $field = array();/* Field: Taxonomy term: Protologue Link */
 $field['id'] = 'biblio_url';
$field['table'] = 'biblio';
$field['field'] = 'biblio_url';
$field['alter']['alter_text'] = 0;
$field['alter']['make_link'] = 0;
$field['alter']['absolute'] = 0;
$field['alter']['external'] = 0;
$field['alter']['replace_spaces'] = 0;
$field['alter']['trim_whitespace'] = 0;
$field['alter']['nl2br'] = 0;
$field['alter']['word_boundary'] = 1;
$field['alter']['ellipsis'] = 1;
$field['alter']['more_link'] = 0;
$field['alter']['strip_tags'] = 0;
$field['alter']['trim'] = 0;
$field['alter']['html'] = 0;
$field['element_label_colon'] = 1;
$field['element_default_classes'] = 1;
$field['hide_empty'] = 0;
$field['empty_zero'] = 0;
$field['hide_alter_empty'] = 1;
$field['biblio_label'] = 1;

  return $field;
}

function emonocot_dwca_add_wcm_image(&$view){
  $new_field = array();
  $new_field['id'] = 'wcm_id_2';
  $new_field['table'] = 'field_data_field_id';
  $new_field['field'] = 'field_id';
  $new_field['relationship'] = 'field_taxonomic_name_tid_1';
  $new_field['alter']['alter_text'] = 0;
  $new_field['alter']['text'] = '[wcm_id]';
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['more_link'] = 0;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['empty'] = '[wcm_id]';
  $new_field['hide_empty'] = 0;
  $new_field['empty_zero'] = 0;
  $new_field['hide_alter_empty'] = 0;
  $new_field['field_api_classes'] = 0;
  return $new_field;
}

function emonocot_dwca_protologue_field() {
  $new_field = array();
  $new_field['id'] = 'field_itis_em_other_ref';
  $new_field['table'] = 'field_data_field_itis_em_other_ref';
  $new_field['field'] = 'field_itis_em_other_ref';
  $new_field['alter']['alter_text'] = 0;
  $new_field['alter']['make_link'] = 0;
  $new_field['alter']['absolute'] = 0;
  $new_field['alter']['external'] = 0;
  $new_field['alter']['replace_spaces'] = 0;
  $new_field['alter']['trim_whitespace'] = 0;
  $new_field['alter']['nl2br'] = 0;
  $new_field['alter']['word_boundary'] = 1;
  $new_field['alter']['ellipsis'] = 1;
  $new_field['alter']['more_link'] = 0;
  $new_field['alter']['strip_tags'] = 0;
  $new_field['alter']['trim'] = 0;
  $new_field['alter']['html'] = 0;
  $new_field['element_label_colon'] = 1;
  $new_field['element_default_classes'] = 1;
  $new_field['hide_empty'] = 0;
  $new_field['empty_zero'] = 0;
  $new_field['hide_alter_empty'] = 1;
  $new_field['field_api_classes'] = 0;
  return $new_field;
}

function _emonocot_dwca_insert_after_in_array($array, $insert, $parent_key){
  $keys = array_keys($array);
  $position = (int)array_search($parent_key, $keys) + 1;
  return array_merge(array_slice($array, 0, $position), $insert, array_slice($array, $position));
}


/**
 * Implements hook_field_formatter_info().
 */
function emonocot_dwca_field_formatter_info(){
  return array(
    'aan_formatter_em' => array(
      'label' => t('aan em'),
      'description' => t('Returns empty for not accepted names.'),
      'field types' => array(
        'list_text'
      )
    ),
    'parent_formatter_em' => array(
      'label' => t('pn em'),
      'description' => t('Returns empty for not accepted names.'),
      'field types' => array(
        'list_text'
      )
    ),
  );
}

/**
 * Implements hook_field_formatter_view().
 * 
 * For a node_reference that links to a Biblio node returns a link to the URL field as either a predefined image
 * or the favicon of the site that is linked to.
 * 
 * For all node types returns link to attached files as an image 
 */
function emonocot_dwca_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display){
  GLOBAL $base_url;
  $markup = '';
  switch($display['type']){
    case 'aan_formatter_em':
      $element = array();
      $markup = '';
      if(isset($entity->field_usage['und'][0]['value'])){
        if($entity->field_usage['und'][0]['value'] == 'accepted' || $entity->field_usage['und'][0]['value'] == 'valid'){
          $markup = '';
        }else{
          $parent = '';
          $parents = taxonomy_get_parents($entity->tid);
          if (is_array($parents)){
          	$parent = array_pop($parents);
          	if (isset($parent->field_id['und'][0]['value'])){ 
          	  $parent = $parent->field_id['und'][0]['value'];
          	}
          	else {
          		$parent = $parent->uuid;
          	}
          }
          $markup = $parent;
        }
      }
      $element[] = array(
        '#markup' => $markup
      );
      return $element;
      break;
    case 'parent_formatter_em':
      $element = array();
      $markup = '';
      if(isset($entity->field_usage['und'][0]['value'])){
        if($entity->field_usage['und'][0]['value'] == 'accepted' || $entity->field_usage['und'][0]['value'] == 'valid'){
          $parent = '';
          $parents = taxonomy_get_parents($entity->tid);
        if (is_array($parents)){
          	$parent = array_pop($parents);
          	if (isset($parent->field_id['und'][0]['value'])){ 
          	  $parent = $parent->field_id['und'][0]['value'];
          	}
          	else {
          		$parent = $parent->uuid;
          	}
          }
          $markup = $parent;

        }else{
                	$markup = '';  
        }
      }
      $element[] = array(
        '#markup' => $markup
      );
      return $element;
      break;
  }
}