<?php

/* function reads the metadata from index meta and gives it back to the
 * template.
 */

#http://localhost:18080/ECHOdocuView/getDocinfo?mode=imagepath&url=http://md.mpiwg-berlin.mpg.de/indexMeta/MPIWG:WEBVEZ22
function digitalobject_getMetadata($objid){

  $base = variable_get('digitalobjects_docuviewer_path');
  #$path="http://localhost:18080/ECHOdocuView/getDocinfoJSON?mode=texttool&url=http://md.mpiwg-berlin.mpg.de/indexMeta/" . $objid;
  $path = $base . "/getDocinfoJSON?mode=texttool&url=http://md.mpiwg-berlin.mpg.de/indexMeta/" . $objid;
  $request = drupal_http_request($path);
  #TODO give out a status message  reports if servers is not available

  if (isset($request->data)){
    return drupal_json_decode($request->data);
  }
  else {
    return null;
  }

}

function digitalobjects_getBibFormattedMetaData($bibdata){
  $bd = drupal_json_encode($bibdata);

  $base = variable_get('digitalobjects_bibdata_path');
  #$path="http://localhost:18080/metadata/getBibFormattedMetaDataJSON";
  $path = $base ."/getBibFormattedMetaDataJSON";
  $options = array(

      'method' => 'POST',
      'data' => 'bibdata=' . $bd
  );
  $request = drupal_http_request($path,  $options);
  return drupal_json_decode($request->data);

}

function digitalobjects_getBibFormattedLabel($bibdata){
  $bd = drupal_json_encode($bibdata);

  $base = variable_get('digitalobjects_bibdata_path');
  #$path="http://localhost:18080/metadata/getBibFormattedMetaDataJSON";
  $path = $base ."/getBibFormattedLabelJSON";
  $options = array(

      'method' => 'POST',
      'data' => 'bibdata=' . $bd
  );
  $request = drupal_http_request($path,  $options);
  return drupal_json_decode($request->data);

}



function digitalobjects_getBibMappedData($bibdata){
  $bd = drupal_json_encode($bibdata);

  $base = variable_get('digitalobjects_bibdata_path');
  #$path="http://localhost:18080/metadata/getBibFormattedMetaDataJSON";
  $path = $base ."/getBibMappedDataJSON";

  $options = array(

      'method' => 'POST',
      'data' => 'bibdata=' . $bd
  );
  $request = drupal_http_request($path,  $options);
  return drupal_json_decode($request->data);

}
#here.metadata.getBibFormattedMetaData(bibdata=docinfo.get('bib', None))



function digitalobjects_readMetadata($objid,$format="long"){

  $md = digitalobject_getMetadata($objid);

  switch($format){
    case "long":
      $bib = isset($md['bib']) ?digitalobjects_getBibFormattedMetaData($md['bib']): null;
    break;

    case "short":
      $bib = isset($md['bib']) ?digitalobjects_getBibFormattedLabel($md['bib']): null;
  }
  if ($bib == null) {
    $bibdata = array (
        "Author" => $md['creator'],
        "Title" => $md['title'],
        "Date" => $md['date']
    );
    $bib="";
    foreach ($bibdata as $key => $content){
      $bib = $bib . '<tr><td class="type">' . $key . '</td>
                <td class="content">' . $content . '</td></tr>';
    }

  }

  $access_type = isset($md['accessType']) ? $md['accessType'] : 'mpiwg';
  $titlepage = isset($md['titlePage']) ? $md['titlePage'] : 1;
  $data =  array(
      "thumburl" => create_thumburl_from_dri($objid,$titlepage=$titlepage),
      "viewerurl" => create_url_from_dri($objid,$access_type = $access_type),
      "md" => $md,
      "bibdata" => $bib,
      "access_type" => $access_type,
  );

  return $data;
}


function create_url_from_dri($dri,$access_type = "closed"){

  if ($access_type=="free"){
    return "http://echo.mpiwg-berlin.mpg.de/".$dri;
  }
  else
    return "http://libcoll.mpiwg-berlin.mpg.de/".$dri;
}

function create_thumburl_from_dri($dri,$titlepage=1){
  return "http://md.mpiwg-berlin.mpg.de/purls/image/".$dri."?pn=" . $titlepage;
}