materio-base-d7/sites/all/modules/gui/materiobasemod/materio_search_api.module

<?php
/**
 * @file
 * This is the file description for Materiobasemod module.
 *
 * In this more verbose, multi-line description, you can specify what this
 * file does exactly. Make sure to wrap your documentation in column 78 so
 * that the file can be displayed nicely in default-sized consoles.
 */
// define(MATERIO_SEARCH_API_RESULTS_PATH, 'explore');

/**
 * Implements hook_permission().
 */
function materio_search_api_permission() {
  return array(
    'access to materio database' =>  array(
      'title' => t('Access to materio database'),
      'description' => t('Access to materio database.'),
    ),
    'use materio search api' =>  array(
      'title' => t('Use materio search api'),
      'description' => t('Use materio search api.'),
    ),
    'use materio search api for breves' =>  array(
      'title' => t('Use materio search api for breves'),
      'description' => t('Use materio search api for breves.'),
    ),
    'use materio search api autocomplete' =>  array(
      'title' => t('Use materio search api autocomplete'),
      'description' => t('Use materio search api autocomplete.'),
    ),
    'use materio search api viewmode selection' =>  array(
      'title' => t('Use materio search api viewmode selection'),
      'description' => t('Use materio search api viewmode selection.'),
    ),
    'administer materio_search_api' => array(
      'title' => t('administer Materio search api'),
      'description' => t('Administer materio search api.'),
    ),
    'use materio search api filters' => array(
      'title' => t('use Materio search api filters'),
      'description' => t('Use materio search api filters.'),
    ),
    'use materio advanced search' => array(
      'title' => t('Use materio advanced search'),
      'description' => t('Use materio advanced search.'),
    ),
  );
}

/**
 * Implements hook_menu().
 */
function materio_search_api_menu() {
  $items = array();

  $base = array(
    'type' => MENU_CALLBACK,
    'file' => 'materio_search_api.pages.inc',
  );

  $items['admin/config/search/search_api/materiosearchapi'] = array(
    'title' => 'Materio Search Api',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('materio_search_api_settings'),
    'access arguments' => array('administer materio_search_api'),
    'file' => 'materio_search_api.admin.inc',
    'type' => MENU_LOCAL_TASK,
  );

  $items['materiosearchapi/autocomplete/dbselect'] = $base+array(
    'access arguments' => array('use materio search api autocomplete'),
    'page callback' => 'materio_search_api_autocomplete_dbselect',
  );

  $items['materiosearchapi/autocomplete/searchapi'] = $base+array(
    'access arguments' => array('use materio search api autocomplete'),
    'page callback' => 'materio_search_api_autocomplete_searchapi',
  );

  $items['explore'] = $base+array(
    // 'access arguments' => array('use materio search api'),
    'access callback' => 'materio_search_api_access_search',
    'page callback' => 'materio_search_api_results_search',
    'title' => t('Explore'),
    //'page argument' => array(1,2,3),
  );

  $items['actuality'] = $base+array(
    // 'access arguments' => array(),
    'page callback' => 'materio_search_api_actuality',
    // 'page argument' => array(),
    'access callback' => TRUE,
  );

  $items['materiosearchapi/viewmode/change'] = $base+array(
    'access arguments' => array('use materio search api viewmode selection'),
    'page callback' => 'materio_search_api_viewmode_change',
    'page argument' => array(3),
  );

  return $items;
}

function materio_search_api_access_search(){
  return true;
  // return user_access('use materio search api for breves') || user_access('use materio search api');
}


/**
* - - - - - - - - - - - -  SOLR  - - - - - - - - - - - -
*/

/**
 * Implements hook_search_api_data_type_info().
 *
 * Declare our new type to Search API so it can be selected for a field.
 */
function materio_search_api_search_api_data_type_info() {
  return array(
    'edge_n2_kw_text' => array(
      'name' => t('Fulltext (partial matching)'),
      'fallback' => 'text',
      'prefix' => 'tem',
      'always multiValued' => TRUE,
    ),
    'edge_n2_kw_mapped_text' => array(
      'name' => t('Fulltext without accents (partial matching)'),
      'fallback' => 'text',
      'prefix' => 'temmap',
      'always multiValued' => TRUE,
    ),
    // 'term_tid' => array(
    //   'name' => t('Taxonomy term tid'),
    //   'fallback' => 'integer',
    //   'prefix' => 'im',
    //   'always multiValued' => TRUE,
    // ),
  );
}

/**
 * Implements hook_search_api_solr_dynamic_field_info().
 *
 * Tell Search API Solr how to index our new data type.
 */
function materio_search_api_search_api_solr_dynamic_field_info() {
  return array(
    'edge_n2_kw_text' => array(
      'prefix' => 'tem',
      'always multiValued' => TRUE,
    ),
    'edge_n2_kw_mapped_text' => array(
      'prefix' => 'temmap',
      'always multiValued' => TRUE,
    ),
    // 'term_tid' => array(
    //   'prefix' => 'im',
    //   'always multiValued' => TRUE,
    // ),
  );
}


/**
 * hook_entity_property_info_alter().
 *
 * define own fields
 * - main taxonomy terms, the purpose is to be able to attribute differente boost on serach api depending on term order
 * - companies infos (address) : retrieve for materiau content type the companie info from the tode node
 *
 */
function materio_search_api_entity_property_info_alter(&$info){
  // dsm($info, 'hook_entity_property_info_alter | info');
  // watchdog('materio solr', 'materio_search_api_entity_property_info_alter', array());

  // NODE PROPERTIES

  $node_props = &$info['node']['properties'];

  for ($i=1; $i <= 5 ; $i++) {
    $node_props['materio_search_api_onthologie_term_'.$i.'_text'] = array(
      'type'=>'text',
      'label'=> t('Main onthologie term '.$i. ' as text (+ synonyms)'),
      'getter callback'=>'materio_search_api_get_onthologie_term_'.$i.'_text',
    );
    $node_props['materio_search_api_onthologie_term_'.$i.'_tid'] = array(
      'type'=>'text',
      'label'=> t('Main onthologie term '.$i. ' as tid'),
      'getter callback'=>'materio_search_api_get_onthologie_term_'.$i.'_tid',
    );
  }

  $node_props['materio_search_api_onthologie_term_others_text'] = array(
    'type'=>'list<text>',
    'label'=> t('Others onthologie terms as text (+ synonyms)'),
    'getter callback'=>'materio_search_api_get_taxonomy_terms_others_text',
  );

  $node_props['materio_search_api_onthologie_term_others_tid'] = array(
    'type'=>'list<text>',
    'label'=> t('Others onthologie terms as tid'),
    'getter callback'=>'materio_search_api_get_taxonomy_terms_others_tid',
  );

  $node_props['materio_search_api_taglibres_text'] = array(
    'type'=>'list<text>',
    'label'=> t('Tag libres terms as text (+ synonyms)'),
    'getter callback'=>'materio_search_api_get_taglibres_terms_text',
  );


  $node_materiau_props = &$info['node']['bundles']['materiau']['properties'];

  $node_materiau_props['materio_search_api_node_propertie_companie'] = array(
    'type'=>'list<text>',
    'label'=> t('Manufacturers and distributors companies localised (dont addresse)'),
    'getter callback'=>'materio_search_api_get_node_propertie_companie',
  );


  // TAXONOMIE TERMS PROPERTIES

  $term_props = &$info['taxonomy_term']['properties'];

  $term_props['materio_search_api_term_property_dup_name'] = array(
    'label' => t("Term name field dup"),
    'description' => t("Duplicate the term name field to apply different filter in solr (remove accents for instance)"),
    'type' => 'text',
    'getter callback' => 'materio_search_api_term_property_dup_name',
  );
  // $term_props['materio_search_api_term_property_name_translated'] = array(
  //   'label' => t("Term name translated"),
  //   'description' => t(""),
  //   'type' => 'text',
  //   'getter callback' => 'materio_search_api_term_property_name_translated',
  // );
}

/**
* taxonomy propoerties as text + synonymes
*/
function materio_search_api_get_onthologie_term_1_text($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_text($item, "field_onthologie", 0);
}
function materio_search_api_get_onthologie_term_2_text($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_text($item, "field_onthologie", 1);
}
function materio_search_api_get_onthologie_term_3_text($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_text($item, "field_onthologie", 2);
}
function materio_search_api_get_onthologie_term_4_text($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_text($item, "field_onthologie", 3);
}
function materio_search_api_get_onthologie_term_5_text($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_text($item, "field_onthologie", 4);
}

function materio_search_api_get_taxonomy_terms_others_text($item){
  // dsm($item, 'item');
  $delta = 5;
  $terms = array();
  while( isset($item->field_onthologie['und'][$delta]) ){
    $terms[] = materio_search_api_get_taxo_term_field_text($item, "field_onthologie", $delta);
    $delta++;
  }
  return $terms;
}

function materio_search_api_get_taglibres_terms_text($item){
  // dsm($item, 'item');
  $delta = 0;
  $terms = array();
  while( isset($item->field_tags_libres['und'][$delta]) ){
    $terms[] = materio_search_api_get_taxo_term_field_text($item, "field_tags_libres", $delta);
    $delta++;
  }
  return $terms;
}

function materio_search_api_get_taxo_term_field_text($item, $field_name, $delta){
  // dsm($item, 'item');
  // dsm($delta, 'delta');

  if(isset($item->{$field_name}['und'][$delta])){
    // print '** item **'."\n";
    // print_r($item);

    $term =  taxonomy_term_load($item->{$field_name}['und'][$delta]['tid']);

    // use entity metadata wrappers as they are SMART
    $wrapper = entity_metadata_wrapper('taxonomy_term', $term);
    // print '** wrapper **'."\n";
    // print_r($wrapper);
    // print "\n";

    $keywords[] = $wrapper->language($item->language)->name_field->raw();
    // print '** term_name **'."\n";
    // print_r($term->name);
    // print "\n";
    // print_r($term_name);
    // print "\n";

    $synonymes = array();
    foreach ($wrapper->language($item->language)->synonyms_synonym->value() as $index => $synonym) {
      // print '** synonym **'."\n";
      // print_r($synonym);
      // print "\n";
      $keywords[] = $synonym;
    }

    return implode(" ", $keywords);
  }


  return null;
}

/**
* taxonomy properties as tid
*/
function materio_search_api_get_onthologie_term_1_tid($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_tid($item, "field_onthologie", 0);
}
function materio_search_api_get_onthologie_term_2_tid($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_tid($item, "field_onthologie", 1);
}
function materio_search_api_get_onthologie_term_3_tid($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_tid($item, "field_onthologie", 2);
}
function materio_search_api_get_onthologie_term_4_tid($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_tid($item, "field_onthologie", 3);
}
function materio_search_api_get_onthologie_term_5_tid($item){
  // dsm($item, 'item');
  return materio_search_api_get_taxo_term_field_tid($item, "field_onthologie", 4);
}

function materio_search_api_get_taxonomy_terms_others_tid($item){
  // dsm($item, 'item');
  $delta = 5;
  $terms = array();
  while( isset($item->field_onthologie['und'][$delta]) ){
    $terms[] = materio_search_api_get_taxo_term_field_tid($item, "field_onthologie", $delta);
    $delta++;
  }
  return $terms;
}

function materio_search_api_get_taxo_term_field_tid($item, $field_name, $delta){
  // dsm($item, 'item');
  // dsm($delta, 'delta');
  $tid = null;
  if(isset($item->{$field_name}['und'][$delta]))
    $tid = $item->{$field_name}['und'][$delta]['tid'];

  // print 'tid = '.$tid."\n";
  return $tid;
}

/**
*
*/
function materio_search_api_get_node_propertie_companie($item){
  // dsm($item, '$item');
  $lang = "fr";//$item->language;

  $languages = language_list();
  global $language;
  $language = $languages[$lang];

  $cies = array();
  $cie_fields = array("field_company_fab", "field_company_distrib");
  foreach ($cie_fields as $cie_field_name) {
    $delta = 0;
    while( isset($item->{$cie_field_name}['und'][$delta]) ){
      $tid = $item->{$cie_field_name}['und'][$delta]['tid'];
      $cie_term =  taxonomy_term_load($tid);
      if($cie_node = company_get_tode_node($cie_term)){
        $cie_node->language = $lang;
        $cie_view = node_view($cie_node, "full", $lang);
        $cie_rendered = rip_tags(drupal_render($cie_view));
        // dsm($cie_rendered, 'cie_rendered');
        $cies[] = $cie_rendered;
      }
      $delta++;
    }
  }

  return $cies;
}

function company_get_tode_node($term){
  if(module_exists('tode'))
    if( $entitys = tode_get_nids_from_term($term))
      if(isset($entitys['node']))
        foreach ($entitys['node'] as $nid => $n)
          return node_load($nid);

  return false;
}

function rip_tags($string) {
  // ----- remove HTML TAGs -----
  $string = preg_replace ('/<[^>]*>/', ' ', $string);

  // ----- remove control characters -----
  $string = str_replace("\r", '', $string);    // --- replace with empty space
  $string = str_replace("\n", ' ', $string);   // --- replace with space
  $string = str_replace("\t", ' ', $string);   // --- replace with space

  // $string = str_replace("&nbsp;", ' ', $string);   // --- replace with space
  // $string = str_replace("&#039;", '\'', $string);   // --- replace with space

  // ----- remove multiple spaces -----
  $string = trim(preg_replace('/ {2,}/', ' ', $string));

  // ----- remove html entities
  preg_match_all('/&[^;]+;/', $string, $entities);
  foreach ($entities[0] as $entity) {
    $string = str_replace($entity, mb_convert_encoding($entity, 'UTF-8', 'HTML-ENTITIES'), $string);
  }

  return $string;
}

/**
 * Taxonomy terms properties
 */
function materio_search_api_term_property_dup_name($term){
  $lang = $term->language;

  return $term->name_field[$lang][0]['value'];
}

// function materio_search_api_term_property_name_translated($term){
//   if($term->vid == 4){
//     print_r(get_defined_vars());
//
//     // print_r($term);
//
//     $trans = module_exists('i18n_taxonomy')
//       ? i18n_taxonomy_term_name($term, 'fr')
//       : $term->name;
//
//     print_r($trans);
//     print "\n";
//   }
// }


//     ____  __           __
//    / __ )/ /___  _____/ /_______
//   / __  / / __ \/ ___/ //_/ ___/
//  / /_/ / / /_/ / /__/ ,< (__  )
// /_____/_/\____/\___/_/|_/____/

/**
 * Implements hook_block_info().
 */
function materio_search_api_block_info() {
  $blocks['materio_search_api_search'] = array(
    'info' => t('Materio search api search'),
    'cache' => DRUPAL_NO_CACHE
  );

  $blocks['mo_searchapi_advanced_search'] = array(
    'info' => t('Materio search api advanced search'),
    'cache' => DRUPAL_NO_CACHE
  );

  # NOT USED
  $blocks['materio_search_api_viewmode'] = array(
    'info' => t('Materio search api view mode selection'),
    'cache' => DRUPAL_NO_CACHE
  );

  // $blocks['materio_search_api_filters'] = array(
  //   'info' => t('Materio search api filters'),
  //   'cache' => DRUPAL_NO_CACHE
  // );

  return $blocks;
}

/**
 * Implements hook_block_view().
 */
function materio_search_api_block_view($delta = '') {
  // This example comes from node.module. Note that you can also return a
  // renderable array rather than rendered HTML for 'content'.
  $block = array();

  switch ($delta) {
    case 'materio_search_api_search':
      if (user_access('use materio search api') || user_access('use materio search api for breves')) {
        $block['subject'] = t('Search');
        $block['content'] = theme('materio_search_api_search_block', array());
      }
      break;
    case 'mo_searchapi_advanced_search':
      if (user_access('use materio advanced search')) {
        $block['subject'] = t('Advanced Search');
        $block['content'] = theme('materio_search_api_advanced_search_block', array());
      }
      break;
    case 'materio_search_api_viewmode':
      // restrict display on node page for materiau and breve
      $block_is_visible = true;
      $q = parse_url($_GET['q']);
      $parts = explode('/', $q['path']);
      if($parts[0] == "node"){
        $node = node_load($parts[1]);
        $block_is_visible = in_array($node->type, array('materiau','breve')) ? true : false;
      }

      if (user_access('use materio search api viewmode selection') && $block_is_visible) {
        $block['subject'] = t('View mode');
        $block['content'] = theme('materio_search_api_select_viewmode_block', array());
      }
      break;
    // case 'materio_search_api_filters':
    //   if (user_access('use materio search api filters')) {
    //     $block['subject'] = t('Filters');
    //     $block['content'] = theme('materio_search_api_filters_block', array());
    //   }
    //   break;

  }
  return $block;
}

/**
 * Implements hook_entity_info_alter().
 */
function materio_search_api_entity_info_alter(&$entity_info) {
  $entity_info['node']['view modes']['cardsmall'] = array(
    'label' => t('Small cards'),
    'custom settings' => TRUE,
  );

  $entity_info['node']['view modes']['cardmedium'] = array(
    'label' => t('Medium cards'),
    'custom settings' => TRUE,
  );

  $entity_info['node']['view modes']['cardbig'] = array(
    'label' => t('Big cards'),
    'custom settings' => TRUE,
  );

  $entity_info['node']['view modes']['cardfull'] = array(
    'label' => t('Full cards'),
    'custom settings' => TRUE,
  );
}

/**
 * Implements hook_node_view_alter().
 */
function materio_search_api_node_view_alter(&$build) {
  $node = $build['#node'];
  if (arg(0) == 'node' && arg(1) == $node->nid) {
    // dsm($build, 'build');
    global $user;
    $viewmode = isset($user->data['materiosearchapi_viewmode']) ? $user->data['materiosearchapi_viewmode'] : variable_get('defaultviewmode', 'full');
    // dsm($viewmode, 'viewmode');
    $node = $build['#node'];
    if($build['#view_mode'] != $viewmode && $build['#view_mode'] != "bookmark" & in_array($node->type, array('breve', 'materiau'))){
      $build = node_view($node, $viewmode);
    }
  }
}

/**
 * Implements hook_node_view().
 */
function materio_search_api_node_view($node, $view_mode, $langcode) {
  if (in_array($view_mode, array('cardsmall','cardmedium', 'cardbig', 'cardfull'))) {
    # PRINT 7.1
    // print_node_view($node, 'full');
    // print_pdf_node_view($node, 'full');

    # PRINT 7.2-beta
    // call for hook_node_view of print module to insert link
    print_ui_node_view($node, 'full');

    // dsm($node, 'node');
  }
}


/**
 * materiobase_search_form()
 */
function materio_search_api_search_form($form, &$form_state){
  //  dsm($form_state, 'form_state');
  // dsm($form, 'form');
  global $user;
  $form = array();

  $args = arg();
  $path = array_shift($args);
  // dsm($args, 'args');
  if(isset($args[0]) && $args[0] == "advanced"){
    $advanced = true;
    array_shift($args);
    // dsm($args, 'shifted arsg');
    // foreach ($args as $arg) {
    //   $typed[] = $arg;//(integer)$arg;
    // }
    $keys = implode(' +', $args);
  }else{
    $keys = implode('/', $args);
  }



  if(user_access('use materio search api autocomplete')){ // use materio search api autocomplete | use materio search api filters
    $query = new EntityFieldQuery();
    $query->entityCondition('entity_type', 'node')
      ->entityCondition('bundle', 'materiau')
      ->propertyCondition('status', 1);
    $count = $query->count()->execute();
    $default_value = t("search among our !fiches cards", array("!fiches"=>$count));
  }else{
    $default_value = '';
  }

  // add a back to search/base home bouton if on explore/foo
  if ($path == 'explore' || $path == 'bookmarks' || $path == 'lists' ) {
    $link = l('<i class="fi-home"></i>', base_path().'actuality', array(
      'html'=>true,
      'attributes'=>array('class'=>'back-search-home')
    ));

    $form['actu'] = array(
      '#type' => 'markup',
      '#markup' => $link,
      //'<a href="'.base_path().'actuality" class="back-search-home"><i class="fi-home"></i></a>'
    );
  }


  $form['searchfield'] = array(
    '#type' => 'textfield',
    '#default_value' => $path == 'explore' ? $keys : $default_value, // TODO:  set the search page path global or a variable in settings
    '#autocomplete_path' => 'materiosearchapi/autocomplete/searchapi',
    //'#autocomplete_path' => 'materiosearchapi/autocomplete/dbselect',
    '#size' => 30,
    '#maxlength' => 1024,
    '#attributes' => array("default"=>$default_value),
  );

  if(user_access('use materio search api filters')){

    $index = search_api_index_load(variable_get('mainsearchindex', -1));
    $indexed_bundles = $index->options['data_alter_callbacks']['search_api_alter_bundle_filter']['settings']['bundles'];

    foreach ($indexed_bundles as $bundle) {
      $bundles_options[$bundle] = $bundle;
      $default_bundles[] = $bundle;
    }

    $user_bundles_filter = isset($user->data['materiosearchapi_bundlesfilter']) ? $user->data['materiosearchapi_bundlesfilter'] : $default_bundles;

    $form['bundles_filter'] = array(
      '#type'=>'checkboxes',
      '#options' => $bundles_options,
      '#default_value' => $user_bundles_filter,
      // '#attributes' => array('class'=>array('btn-group')),
    );
  }

  $form['create'] = array(
    '#type' => 'image_button',
    '#src' => drupal_get_path('module', 'materio_search_api') . '/images/search.png',
    '#value' => t('Search'),
  );
  return $form;
}

function materio_search_api_search_form_validate($form, &$form_state){
  // dsm($form, '$form');
  // dsm($form_state, '$form_state');
  // dsm(strlen($form_state['values']['searchfield']));
  if (strlen(trim($form_state['values']['searchfield'])) <= 1) {
    form_set_error('searchfield', 'Please enter at least 2 characters keyword.');
  }
}

function materio_search_api_search_form_submit($form, &$form_state){
  // dsm($form_state, 'form_state');
  global $user;
  if(user_access('use materio search api filters')){
    foreach($form_state['values']['bundles_filter'] as $bundle => $value)
      if($value)
        $bundles[] = $bundle;

    # if no filter checked we checked them all by default
    if(!isset($bundles))
      foreach($form_state['values']['bundles_filter'] as $bundle => $value)
          $bundles[] = $bundle;
  }else{
    # if user have no access to filters
    $index = search_api_index_load(variable_get('mainsearchindex', -1));
    $indexed_bundles = $index->options['data_alter_callbacks']['search_api_alter_bundle_filter']['settings']['bundles'];

    foreach ($indexed_bundles as $bundle) {
      $bundles[] = $bundle;
    }
  }

  user_save($user, array("data"=>array('materiosearchapi_bundlesfilter' => $bundles)));

  $form_state['redirect'] = 'explore/'.$form_state['values']['searchfield'];
}


/**
 * materio_search_api_advanced_search_form()
 */
function materio_search_api_advanced_search_form($form, &$form_state){
  //  dsm($form_state, 'form_state');
  // dsm($form, 'form');
  // global $user;
  // $form = array();

  // TODO: get vid from settings
  $vid = 15; // onthologie
  $voc = taxonomy_vocabulary_load($vid);
  $voc_machinename = $voc->machine_name;
  // dsm($voc, "voc");

  $values = $form_state['values'];

  $args = arg();
  $path = array_shift($args);

  // TODO: get the keywords from args and reconstruct the filter lines with default values
  // dsm($args, "args");
  $keywords = explode("+", $args[0]);
  // dsm($keywords, 'keywords');

  $default_values = array();
  foreach ($keywords as $key => $value) {
    $name = str_replace('"', '', $value);
    //Get the term
    $terms = taxonomy_get_term_by_name($name, $voc_machinename);
    $term = array_shift($terms);
    // dsm($term, $term->tid.' : '.$term->name);
    // get parents
    if(isset($term->tid)){
      $parents = taxonomy_get_parents_all($term->tid);
      // dsm($parents, 'parents');
      // build default values
      for ($p=count($parents)-1; $p >=0 ; $p--) {
        $default_values[$key][] = $parents[$p]->tid;
      }
    }
  }
  // dsm($default_values, 'default_values');


  // define default number of lines, 1 or more if some were already added
  $form_state['filterlines'] =
    isset($form_state['filterlines'])
    ? $form_state['filterlines']
    : count($default_values)
      ? count($default_values)
      : 1;

  // filters form container
  $form['filters'] = array(
    '#type' => 'container',
    '#prefix' => '<div id="advancedsearch-filters">',
    '#suffix' => '</div>',
  );

  $trigger = FALSE;
  if (!empty($form_state['triggering_element']['#name'])) {
    $trigger = $form_state['triggering_element'];
  }

  $rmline = false;
  if ($trigger) {
    // dsm($form_state['triggering_element'], $form_state['triggering_element']['#name']);
    // dsm($values, 'form state values');

    // add a line if needed
    if($trigger['#name'] == 'addfilters'){
      $form_state['filterlines'] = $form_state['filterlines']+1;
    }

    // remove a line if needed
    if(strpos($trigger['#name'], 'rm-filter-') === 0){
      // $form_state['filterlines'] = $form_state['filterlines']+1;
      $rmline = $trigger['#return_value'];
    }
  }

  // TODO: show result count live
  // TODO: filter next select form item

  // build first level taxonomy tree and select options
  $taxotree = taxonomy_get_tree($vid, 0, 1, false);
  $level_0_ops = array(0=>t("Choose a filter"));
  foreach ($taxotree as $index => $term) {
    $level_0_ops[$term->tid] = t($term->name);
  }

  // build filters lines (ajax enabled)
  for ($l=0; $l < $form_state['filterlines']; $l++) {

    // if rmline this line,
    // continue the loop withour creating the line
    if($l === $rmline){
      continue;
    }
    // if we are after the removed line,
    // create a second counter ($ll) to keep a continuous order for form items
    // and keep the current counter ($l) to retrieve de current values
    // if before removed line or no removed line at all, $l = $ll
    if($rmline !== false && $l > $rmline){
      $ll = $l-1;
    }else{
      $ll = $l;
    }
    // dsm("l : ".$l." | ll : ".$ll);

    $form['filters']['filterline-'.$ll] = array(
      '#type' => 'container',
      '#attributes' => array(
        'class' => array("filter-line")
      )
    );

    // get the default value
    // from from_state values if ajax
    // or from url args
    // or 0
    if(isset($values['filter-'.$l.'-0']) && $values['filter-'.$l.'-0']){
      $default = $values['filter-'.$l.'-0'];
    }else{
      $default = isset($default_values[$l][0]) ? $default_values[$l][0] : 0;
    }

    // form select element for first level
    $form['filters']['filterline-'.$ll]['filter-'.$ll.'-0'] = array(
      '#type' => 'select',
      '#options' => $level_0_ops,
      '#name' => 'filter-'.$ll.'-0',
      '#default_value' => $default,
      '#ajax' => array(
        'callback' => 'materio_search_api_advanced_search_select_callback',
        'wrapper' => 'advancedsearch-filters',
      ),
    );

    // add level 1 filter if level 0 chosen
    if($default){
        // $default = $values['filter-'.$l.'-0'];
        // $form['filters']['filterline-'.$ll]['filter-'.$ll.'-0']['#default_value'] = $default;

        // build second level taxonomy tree and select options
        $taxotree1 = taxonomy_get_tree($vid, $default, 1, false);
        $level_1_ops = array(0=>t("Choose a filter"));
        foreach ($taxotree1 as $index => $term) {
          $level_1_ops[$term->tid] = t($term->name);
        }

        if(isset($values['filter-'.$l.'-1']) && $values['filter-'.$l.'-1']){
          $default = $values['filter-'.$l.'-1'];
        }else{
          $default = isset($default_values[$l][1]) ? $default_values[$l][1] : 0;
        }
        // dsm($default, "default 1");

        // form select element for second level
        $form['filters']['filterline-'.$ll]['filter-'.$ll.'-1'] = array(
          '#type' => 'select',
          '#options' => $level_1_ops,
          '#name' => 'filter-'.$ll.'-1',
          '#default_value' => $default,
          '#ajax' => array(
            'callback' => 'materio_search_api_advanced_search_select_callback',
            'wrapper' => 'advancedsearch-filters',
          ),
        );

        // add level 2 filter if level 1 chosen
        if($default){
            // $default = $values['filter-'.$l.'-1'];
            // $form['filters']['filterline-'.$ll]['filter-'.$ll.'-1']['#default_value'] = $default;


            // build second level taxonomy tree and select options
            $taxotree2 = taxonomy_get_tree($vid, $default, 1, false);
            if(count($taxotree2)){
              $default = isset($default_values[$l][2]) ? $default_values[$l][2] : 0;
              // dsm($default, "default 2");

              $level_2_ops = array(0=>t("Choose a filter"));
              foreach ($taxotree2 as $index => $term) {
                $level_2_ops[$term->tid] = t($term->name);
              }
              // form select element for third level
              $form['filters']['filterline-'.$ll]['filter-'.$ll.'-2'] = array(
                '#type' => 'select',
                '#options' => $level_2_ops,
                '#name' => 'filter-'.$ll.'-2',
                '#default_value' => $default,
              );
            }
        }
    }

    // add remove the line button
    $form['filters']['filterline-'.$ll]['rm-filter-'.$ll] = array(
      '#type' => 'image_button',
      '#src' => drupal_get_path('module', 'materio_search_api') . '/images/rmfilter.png',
      '#title' => t('Remove this filter line'),
      '#name' => 'rm-filter-'.$ll,
      '#return_value' => $ll,
      '#executes_submit_callback' => false,
      '#ajax' => array(
        'callback' => 'materio_search_api_advanced_search_rmline_callback',
        'wrapper' => 'advancedsearch-filters',
        // 'trigger_as' => array("name"=>"rmfilters".$l),
      ),
      "#attributes" => array('class'=>array('rm-btn')),
    );

  } // end of lines loop

  if($rmline !== false){
    $form_state['filterlines'] = $form_state['filterlines']-1;
  }

  // button to add a new line of criterias
  $form['filters']['addfilters'] = array(
    '#type' => 'image_button',
    '#src' => drupal_get_path('module', 'materio_search_api') . '/images/addfilter.png',
    '#title' => t('Add a filter line'),
    '#name' => "addfilters",
    '#return_value' => "add",
    '#ajax' => array(
      'callback' => 'materio_search_api_advanced_search_addfilter_callback',
      'wrapper' => 'advancedsearch-filters',
    ),
    '#executes_submit_callback' => false,
    '#attributes' => array(
      'class'=>array('add-filter')
    ),
  );

  // filters form container
  $form['rightcol'] = array(
    '#type' => 'container',
  );
  // add a back to search/base home bouton if on explore/foo
  if ($path == 'explore' || $path == 'bookmarks' || $path == 'lists' ) {
    $link = l('<i class="fi-home"></i>', base_path().'actuality', array(
      'html'=>true,
      'attributes'=>array('class'=>'back-search-home')
    ));
    $form['rightcol']['actu'] = array(
      '#type' => 'markup',
      '#markup' => $link,
    );
  }

  // submit the search
  $form['rightcol']['search'] = array(
    '#type' => 'image_button',
    '#src' => drupal_get_path('module', 'materio_search_api') . '/images/search.png',
    '#title' => t('Search'),
    '#name' => "search",
    '#return_value' => "search",
  );

  return $form;
}

function materio_search_api_advanced_search_select_callback($form, &$form_state) {
  return $form['filters'];
}

function materio_search_api_advanced_search_addfilter_callback($form, &$form_state) {
  return $form['filters'];
}

function materio_search_api_advanced_search_rmline_callback($form, &$form_state) {
  return $form['filters'];
}

function materio_search_api_advanced_search_form_validate($form, &$form_state){
  // dsm($form, '$form');
  // dsm($form_state, '$form_state');
  // dsm(strlen($form_state['values']['searchfield']));
  // if (strlen(trim($form_state['values']['searchfield'])) <= 1) {
  //   form_set_error('searchfield', 'Please enter at least 2 characters keyword.');
  // }
}

function materio_search_api_advanced_search_form_submit($form, &$form_state){
  // dsm($form_state, 'form_state');

  $values = $form_state['values'];
  $filterlines = isset($form_state['filterlines']) ? $form_state['filterlines'] : 0;
  $keywords = array();

  // extract last tag of each lines
  for ($l=0; $l < $filterlines ; $l++) {
    for ($i=2; $i > 0 ; $i--) {
      if(isset($values['filter-'.$l.'-'.$i]) && $values['filter-'.$l.'-'.$i]){
        $term = taxonomy_term_load($values['filter-'.$l.'-'.$i]);
        $keywords[$term->tid] = '"'.$term->name.'"';
        continue 2;
      }else{
        continue;
      }
    }
  }

  // dsm($keywords, 'keywordstid');

  $keywords_str = implode("+", $keywords);

  // dsm($keywords_str);

  $form_state['redirect'] = 'explore/'.$keywords_str; //rawurlencode($keywords_str);
}



/**
 * viewmode
 */
function _materio_search_api_change_viewmode($vm){
  // dsm($vm, '_materio_search_api_change_viewmode');

  global $user;
  // dsm($user, 'user');

  $entity_infos = entity_get_info();
  // dsm($entity_infos, 'entity_infos');

  if (in_array($vm, variable_get('availableviewmodes', array()))) {
    user_save($user, array("data"=>array('materiosearchapi_viewmode' => $vm)));
    $rep = array('statut'=>'saved');
  }else{
    $rep = array('statut'=>'viewmode not allowed');
  }

  return $rep;
}

/**
* - - - - - - - - - - - -  THEME  - - - - - - - - - - - -
*/

/**
 * Implements hook_theme().
 */
function materio_search_api_theme($existing, $type, $theme, $path) {
  return array(
    'materio_search_api_search_block' => array(
      'arguments' => array(),
      'template' => 'materio-search-api-search-block',
      'path' => drupal_get_path('module', 'materio_search_api').'/templates',
    ),
    'materio_search_api_advanced_search_block' => array(
      'arguments' => array(),
      'template' => 'materio-search-api-advanced-search-block',
      'path' => drupal_get_path('module', 'materio_search_api').'/templates',
    ),
    'materio_search_api_select_viewmode_block' => array(
      'arguments' => array(),
      'template' => 'materio-search-api-select-viewmode-block',
      'path' => drupal_get_path('module', 'materio_search_api').'/templates',
    ),
    // 'materio_search_api_filters_block' => array(
    //   'arguments' => array(),
    //   'template' => 'materio-search-api-filters-block',
    //   'path' => drupal_get_path('module', 'materio_search_api').'/templates',
    // ),
    'materio_search_api_results' => array(
      'arguments' => array(),
      'template' => 'materio-search-api-results',
      'path' => drupal_get_path('module', 'materio_search_api').'/templates',
      'variables' => array(
        'index' => NULL,
        'results' => array('result count' => 0),
        'items' => array(),
        'view_mode' => 'teaser',
        'keys' => '',
        // 'page_machine_name' => NULL,
        'spellcheck' => NULL,
        'pager' => NULL,
      ),
    ),
    // 'materio_search_api_performance' => array(
    //   'render element' => 'element',
    // ),
    'materio_search_api_actuality' => array(
      'template' => 'materio-search-api-actuality',
      'path' => drupal_get_path('module', 'materio_search_api').'/templates',
      'arguments' => array(
        'items' => array(),
        'view_mode' => "teaser",
        'pager' => NULL,
        'count' => 0,
      )
    ),
    'materio_search_api_form_element' => array(
      'render element' => 'element',
    ),
  );
}


/**
 * Implements theme for rendering search-performance
 */
// function theme_materio_search_api_performance($variables) {
//   $element = array_shift($variables);

//   return $element['#markup'];
// }


/**
 * template_preprocess_materiobase_search_block();
 */
function template_preprocess_materio_search_api_search_block(&$vars){
  // dsm($vars, '$vars');
  $vars['searchform'] = drupal_get_form("materio_search_api_search_form");
}

/**
 * template_preprocess_materiobase_advanced_search_block();
 */
function template_preprocess_materio_search_api_advanced_search_block(&$vars){
  // dsm($vars, '$vars');
  $vars['searchform'] = drupal_get_form("materio_search_api_advanced_search_form");
}


function template_preprocess_materio_search_api_select_viewmode_block(&$vars){
  global $user;

  $active = isset($user->data['materiosearchapi_viewmode']) ? $user->data['materiosearchapi_viewmode'] : variable_get('defaultviewmode', 'full');

  $availableviewmodes = variable_get('availableviewmodes', -1);
  // dsm($availableviewmodes);

  $entity_infos = entity_get_info();
  // dsm($entity_infos, 'entity_infos');

  $content = '<div class="btn-group btn-group-vertical">';
  foreach ($entity_infos['node']['view modes'] as $viewmode => $value) {
    if(in_array($viewmode, $availableviewmodes)){
      $link = l(
        '<i class="icon-materio-viewmode-'.$viewmode.($active == $viewmode ? " active" : '').'"></i><span class="inner">'.$value['label'].'</span>',
        'materiosearchapi/viewmode/change/'.$viewmode,
        array(
          'query' => drupal_get_destination(),
          'html' => true,
          'attributes' => array(
            'class' => array(
              'viewmode-link',
              'viewmode-'.$viewmode,
              $active == $viewmode ? " active" : ''
            ),
            'rel' => $viewmode
          )
        )
      );

      $content .= $link;
    }
  }
  $content .= '</div>';
  $vars['content'] = $content;
}

// function template_preprocess_materio_search_api_filters_block(&$vars){

//   $index_machine_name = variable_get('mainsearchindex', -1);
//   $index = search_api_index_load($index_machine_name);
//   dsm($index, 'index');

//   // $entity_infos = entity_get_info($index->item_type);
//   // dsm($entity_infos, 'entity_infos');
//   $indexed_bundles = $index->options['data_alter_callbacks']['search_api_alter_bundle_filter']['settings']['bundles'];

//   dsm($indexed_bundles, 'indexed_bundles');


//   $vars['content'] = drupal_get_form('materio_search_api_filters_form', $indexed_bundles);
// }

// function materio_search_api_filters_form($form, $form_state, $bundles){
//   $form = array();
//   dsm($bundles, 'bundles');
//   foreach ($bundles as $bundle) {
//     $form[$bundle . '_filter'] = array(
//       '#type'=>'checkbox',
//       '#default_value' => -1,
//       '#title' => $bundle,
//     );
//   }

//   return $form;
// }

/**
 * Function for preprocessing the variables for the search_api_page_results
 * template.
 *
 * @param array $variables
 *   An associative array containing:
 *   - $index: The index this search was executed on.
 *   - $results: An array of search results, as returned by
 *     SearchApiQueryInterface::execute().
 *   - $keys: The keywords of the executed search.
 *
 * @see materio-search-api-results.tpl.php
 */
function template_preprocess_materio_search_api_results(array &$vars) {
  // dsm($vars, 'vars');
  $results = $vars['results'];

  if(isset($results['result count'])){
    $vars['result_count'] = $results['result count'];
    $vars['sec'] = round($results['performance']['complete'], 3);

    $vars['keywords'] = $vars['keys'];

    if(isset($results['breves count'])){
      // for free users
      // dsm("free users");
      $vars['perfascard'] = true;
      $perfoutput = format_plural(
        $results['breves count'],
        'The search found 1 news ',
        'The search found @count news '
      );
      $perfoutput .= format_plural(
        $vars['result_count'] - $results['breves count'],
        'with 1 associated matter.',
        'with @count associated matters.'
      );
      $perfoutput .= '<br />';
      $perfoutput .= format_plural(
        $results['could results']['result count'],
        ' You could have found 1 result with a ',
        ' You could have found <strong>@count results</strong> with a '
      );
      $perfoutput .= l(t('full access to materiO\'.'), 'node/11187');

      $perfoutput .= l(t('Pricing'), 'node/11187', array("attributes"=>array("class"=>array('button'))));

      $vars['search_performance'] = $perfoutput;

    }else{
      // for members
      $vars['perfascard'] = false;

      // $vars['search_performance'] = format_plural(
      //   // $results['result count'],
      //   $vars['result_count'],
      //   'The search found 1 result ',
      //   'The search found @count results '
      // )

      $vars['search_performance'] = t('The search found @count result(s) with keywords @keys.', array(
        "@count"=>$vars['result_count'],
        "@keys"=>$vars['keywords'])
      );

      // TODO indicate how many materials and how many news
      // $vars['search_performance'] = t('The search found @count result(s) with keywords @keys. @mat materials and @new news.', array(
      //   "@count"=>$vars['result_count'],
      //   "@keys"=>$vars['keywords'],
      //   "@mat"=>4,
      //   "@new"=>7)
      // );
    }
  }else{
    //for anonymous
    $vars['perfascard'] = true;

    $perfoutput = t('You can\'t access to the materiO\' search tool without an account.').'<br />';

    $perfoutput .= format_plural(
      $results['could results']['result count'],
      ' You could have found 1 result with a ',
      ' You could have found <strong>@count results</strong> with a '
    );
    $perfoutput .= l(t('full access to materiO\'.'), 'node/11187');

    $perfoutput .= l(t('Pricing'), 'node/11187', array("attributes"=>array("class"=>array('button'))));

    $vars['search_performance'] = $perfoutput;
  }


  //dsm($vars, '$vars');
}

function template_preprocess_materio_search_api_actuality(&$vars){
  // dsm($vars, 'template_preprocess_materio_search_api_actuality | vars');

  // $vars['actualities_infos'] = t('Actualities by materiO\'');
  $vars['actualities_infos'] = t('');
}
//
// function template_preprocess_materio_search_api_advanced_search_block(&$vars){
//   // dsm($vars, "vars");
//   $vars['searchform'] = drupal_get_form("materio_search_api_advanced_search_form");
// }

function theme_materio_search_api_form_element($variables) {
  // dsm($variables, 'variables');

  $element = &$variables['element'];

  // This function is invoked as theme wrapper, but the rendered form element
  // may not necessarily have been processed by form_builder().
  $element += array(
    '#title_display' => 'before',
  );

  // Add element #id for #type 'item'.
  if (isset($element['#markup']) && !empty($element['#id'])) {
    $attributes['id'] = $element['#id'];
  }
  // Add element's #type and #name as class to aid with JS/CSS selectors.
  $attributes['class'] = array('form-item');
  if (!empty($element['#type'])) {
    $attributes['class'][] = 'form-type-' . strtr($element['#type'], '_', '-');
  }
  if (!empty($element['#name'])) {
    $attributes['class'][] = 'form-item-' . strtr($element['#name'], array(' ' => '-', '_' => '-', '[' => '-', ']' => ''));
  }
  // Add a class for disabled elements to facilitate cross-browser styling.
  if (!empty($element['#attributes']['disabled'])) {
    $attributes['class'][] = 'form-disabled';
  }

  # adding element class to wrapper
  foreach ($element['#attributes']['class'] as $value) {
    $attributes['class'][] = $value;
  }

  foreach ($element['#attributes'] as $attr => $value) {
    if(!in_array($attr, array('class', 'multiple', 'id', 'type', 'name'))){
      $attributes[$attr] = $value;
    }
  }

  $output = '<div' . drupal_attributes($attributes) . '>' . "\n";


  // If #title is not set, we don't display any label or required marker.
  if (!isset($element['#title'])) {
    $element['#title_display'] = 'none';
  }
  $prefix = isset($element['#field_prefix']) ? '<span class="field-prefix">' . $element['#field_prefix'] . '</span> ' : '';
  $suffix = isset($element['#field_suffix']) ? ' <span class="field-suffix">' . $element['#field_suffix'] . '</span>' : '';

  switch ($element['#title_display']) {
    case 'before':
    case 'invisible':
      $output .= ' ' . theme('form_element_label', $variables);
      $output .= ' ' . $prefix . $element['#children'] . $suffix . "\n";
      break;

    case 'after':
      $output .= ' ' . $prefix . $element['#children'] . $suffix;
      $output .= ' ' . theme('form_element_label', $variables) . "\n";
      break;

    case 'none':
    case 'attribute':
      // Output no label and no required marker, only the children.
      $output .= ' ' . $prefix . $element['#children'] . $suffix . "\n";
      break;
  }

  if (!empty($element['#description'])) {
    $output .= '<div class="description">' . $element['#description'] . "</div>\n";
  }

  $output .= "</div>\n";

  return $output;
}





/**
* - - - - - - - - - - - -  SEARCH API PAGE  - - - - - - - - - - - -
*/

/**
 * Implements hook_block_view_alter().
 */
function materio_search_api_block_view_alter(&$data, $block) {
  // this alter prepopulate the search form provide by search_api_page
  if ($block->module == 'search_api_page') {
    $page = search_api_page_load($block->delta);
    $item = menu_get_item();

    if (isset($page->path) && $page->path == $item['path']) {
      $keys = arg(count(arg(NULL, $page->path)));
      if ($keys) {
        $data['content']['keys_' . $page->id]['#default_value'] = $keys;
        $data['content']['keys_' . $page->id]['#value'] = $keys;
      }
    }
  }
}