<?php


function solrsearch_load_data_x($field,$letter){
  #todo cache this!
  $env = solrsearch_environment_load('echosearch');
  $searchStr = "/terms?q=doc-type:indexMeta%20and%20access-type:free&json.nl=map&wt=json&terms.fl=" . $field . "&terms.limit=-1&terms.sort=index&term.mincount=1&terms.prefix=" . $letter;
  $url = $env['url'];
  $result = drupal_http_request($url . $searchStr);
  $data = drupal_json_decode($result->data);
  $authorsAll=$data['terms'][$field];
  return $authorsAll;
}

function solrsearch_load_data($field,$letter,$accessType="free"){
  #todo cache this!
  $env = solrsearch_environment_load('echosearch');
  $searchStr = "/select?q=". $field. ":". $letter . "*%20and%20doc-type:indexMeta%20&json.nl=map&facet.sort=index&facet.mincount=1&wt=json&facet=true&facet.field=" . $field . "&facet.limit=100000&start=0&rows=9";

  if ($accessType=="free")
  {
    $searchStr .="&fq=access-type:free";
  }

  $url = $env['url'];
  $result = drupal_http_request($url . $searchStr);
  $data = drupal_json_decode($result->data);
  #return $data;

  $resultsAll=$data['facet_counts']['facet_fields'][$field];

  #result list ist zu lang, da hier alle werke gefunden werden, bei denene ein Autor mit dem Buchstaben beginnt.
  $res=array();
  foreach ($resultsAll as $author => $val){
    if (drupal_substr($author, 0,1) == $letter){
      $res[$author]=$val;
    }

  }

  return $res;
}

#

function solrsearch_term_select_field(){
  $query = $_GET;
  if (isset($query['browseField'])){
    drupal_goto("solrsearch-terms/" .$query['browseField'] );
  }

}
function solrsearch_term_list($field="",$letter="A",$numperpage=20){

  if ($field==""){
    return '';
  }



 #field z.b. author_c

  if (!user_access("view restricted content")){
    $accessType="free";
  } else {
    $accessType="";
  }

  $authorsAll=solrsearch_load_data($field,$letter,$accessType);
  $cnt=count($authorsAll);

  $page  = pager_find_page();
  $offset = $numperpage * $page;
  $authors = array_slice($authorsAll, $offset,$slice_lenght=$numperpage);

  pager_default_initialize($cnt, 10);

  $rs =  theme('solrsearch_term_selection_form',array('field' => $field));
  $rs .=theme('pager', array('tags' => array('<<','<','..','>','>>'),'quantity' => 3));

  if ($field=='author_c'){
    $rs .=  theme('solrsearch_term_list_author',array('authors' => $authors,'cnt' => $cnt,'letter' => $letter));
  } else {
    $rs .=  theme('solrsearch_term_list_title',array('titles' => $authors,'cnt' => $cnt,'letter' => $letter));
  }


  $rs .=theme('pager', array('tags' => array('<<','<','..','>','>>'),'quantity' => 3));

  return $rs;
  }


  function solrsearch_alphapager($field) {
    $attributes = array( 'class' => 'alpha-page' );
    $output = "";

    foreach(range('A', 'Z') as $letter) {
      $output .= "
          <li>" . l($letter,  "solrsearch-terms/" . $field . "/" . $letter, $attributes). "&nbsp;|</li>";
    }



    return $output;
  }