<?php

/**
 * Adds the gbif overlay to the gm3 maps.
 *
 * Implements hook_gm3_libraries_alter().
 */
function eol_gbif_maps_gm3_libraries_alter(&$libraries){
  // We add special data to map on taxonomy term pages only.
  if(($term = menu_get_object('taxonomy_term', 2)) != FALSE){
    // Now we need to calculate the GBIF taxon id for this term name, and then
    // add the gbif library to the map.
    // First we check to see if we've loaded this term before, and if so, we
    // use that data.
    $col = db_select('eol_gbif_maps_tid_map', 'e')->fields('e')->condition('tid', arg(2))->execute()->fetchCol(1);
    if(count($col)){
      $gbifId = array_pop($col);
    }else{
      $url = url(
        'http://api.gbif.org/v1/species',
        [ 'query' =>
          ['name' => $term->name]
        ]
      );
      $request = drupal_http_request($url, array(
        'timeout' => 3
      ));
      if($request->code == 200){
        $json = json_decode($request->data, TRUE);
        if($json && !empty($json['results'][0]['nubKey'])){
          $gbifId = $json['results'][0]['nubKey'];
          db_insert('eol_gbif_maps_tid_map')->fields(array(
            'tid' => $term->tid,
            'taxon_id' => "$gbifId"
          ))->execute();
        }
      }else {
        trigger_error(E_USER_WARNING, 'Request to GBIF species API failed in eol_gbif_maps');
      }
    }

    $libraries['eol_gbif_maps_overlay'] = array(
      'module' => 'eol_gbif_maps',
      'taxon_id' => $gbifId
    );
  }
}

/**
 * Implementation of hook_taxonomy_term_update().
 */
function eol_gbif_maps_taxonomy_term_update($term){
  db_delete('eol_gbif_maps_tid_map')->condition('tid', $term->tid)->execute();
}

/**
 * Implementation of hook_taxonomy_term_delete($term).
 */
function eol_gbif_maps_taxonomy_term_delete($term){
  eol_gbif_maps_taxonomy_term_update($term);
}

/**
 * Implementation of hook_library().
 */
function eol_gbif_maps_library(){
  return array(
    'eol_gbif_maps_overlay' => array(
      'title' => t('GBIF taxon data overlay'),
      'website' => 'http://eol.org/',
      'version' => '1',
      'js' => array(
        array(
          'data' => drupal_get_path('module', 'eol_gbif_maps') . "/js/eol_gbif_maps.js"
        ),
        array(
          'data' => array(
            'gm3' => array(
              'settings' => array(
                'eol_gbif_maps' => array(
                  'tile_host' => 'http://api.gbif.org'
                )
              )
            )
          ),
          'type' => 'setting'
        )
      ),
      'dependencies' => array(
        array(
          'gm3',
          'gm3'
        )
      )
    )
  );
}