<?php

/**
 * @file
 * Implementation of Roblib search for searching several targets.
 */

/**
 * Implements hook_boot().
 * @global type $conf
 */
function roblib_search_cufts_boot() {
  /* below is an example from islandora_solr module for internationalization
   *  global $conf;

    // Allow i18n, by using multilingual variables.
    if (module_exists('i18n')) {
    $vars = array(
    'islandora_solr_facets',
    'islandora_solr_result_fields',
    'islandora_solr_searchterms'
    );

    if (isset($conf['i18n_variables']) && is_array($conf['i18n_variables'])) {
    $conf['i18n_variables'] = array_merge($vars, $conf['i18n_variables']);
    }
    else {
    $conf['i18n_variables'] = $vars;
    }
    } */
}

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

  $items['admin/roblib_search/cufts_search'] = array(
    'title' => 'Cufts Search Target configuration',
    'description' => 'Configuration for the Roblib evergreen search target',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('roblib_search_cufts_config_form'),
    'access arguments' => array('access administration pages'),
    'type' => MENU_NORMAL_ITEM,
  );

  $items['roblib_search/cufts/ajax/%'] = array(
    'title' => 'cufts ajax',
    'page callback' => 'roblib_search_cufts_ajax',
    'page arguments' => array(3),
    'type' => MENU_CALLBACK,
    'access arguments' => array('search roblib cufts'),
  );

  return $items;
}

function roblib_search_cufts_config_form($form, &$form_state) {
  
  $form['roblib_search_cufts_url'] = array(
    '#type' => 'textfield',
    '#title' => t('Cufts url'),
    '#default_value' => variable_get('roblib_search_cufts_url', 'http://cufts2.lib.sfu.ca/CJDB/PCU/browse/show?'),
    '#description' => t('The base Cufts URL, for example http://cufts2.lib.sfu.ca/CJDB/PCU/browse/show?'),
    '#required' => TRUE,
  );
  $form['roblib_search_cufts_search_suffix'] = array(
    '#type' => 'textfield',
    '#title' => t('Cufts search suffix'),
    '#default_value' => variable_get('roblib_search_cufts_search_suffix', 'browse_field=title&search_type=startswith&format=json&search_terms='),
    '#description' => t('The suffix will be appended to the base url for searches, for example browse_field=title&search_type=startswith&format=json&search_terms='),
    '#required' => TRUE,
  );

  $form['roblib_search_cufts_num_results'] = array(
    '#type' => 'textfield',
    '#title' => t('Number of results to return'),
    '#default_value' => variable_get('roblib_search_cufts_num_results', '5'),
    '#description' => t('The number of results to display in the Bento box'),
    '#required' => TRUE,
  );


  return system_settings_form($form);
}

/**
 * Implements hook_permission().
 */
function roblib_search_cufts_permission() {
  return array(
    'search roblib cufts' => array(
      'title' => t('Search the cufts target'),
      'description' => t('Search oblib cufts target. This permission exposes the search blocks and allows you to see search results.'),
    ),
    'administer roblib search cufts' => array(
      'title' => t('Administer Roblib Search Cufts'),
      'description' => t('Administer settings for the Roblib cufts search client.'),
    ),
  );
}

/**
 * Implements hook_theme().
 */
function roblib_search_cufts_theme() {
  // set path
  $path = drupal_get_path('module', 'roblib_search_cufts');
  $file = 'theme.inc';

  return array(
    // results page
    'roblib_search_cufts' => array(
      'path' => $path . '/theme',
      'file' => $file,
      'template' => 'roblib-search-cufts',
      'variables' => array('results'=>NULL)
    )
  );
}

function roblib_search_cufts_block_info() {

  $blocks['roblib_search_cufts_results'] = array(
    // info: The name of the block.
    'info' => t('Cufts Search Results block'),
    // Block caching options (per role, per user, etc.)
    'cache' => DRUPAL_CACHE_PER_ROLE, // default
  );

  return $blocks;
}

function roblib_search_cufts_block_view($delta = '') {
  //The $delta parameter tells us which block is being requested.
  switch ($delta) {
    case 'roblib_search_cufts_results':
      // The subject is displayed at the top of the block. Note that it
      // should be passed through t() for translation. The title configured
      // for the block using Drupal UI supercedes this one.
      $block['subject'] = t('Cufts Results');
      // The content of the block is typically generated by calling a custom
      // function.
      // $block['content'] = roblib_search_cufts_get_results();
      $block['content'] = theme('roblib_search_cufts', array('results' => NULL)); //we will get the results via javascript
      break;
  }
  return $block;
}

function roblib_search_cufts_ajax($query) {
  print roblib_search_cufts_get_results($query);
  exit();
}
/**
 * 
 * @param string $query
 * @return string
 *   json string
 */
function roblib_search_cufts_get_results($query = NULL) {
  drupal_add_css(drupal_get_path('module', 'roblib_search_cufts') . '/css/roblib_search_cufts.theme.css');

  // Url parameters.
  if (!isset($query)) {
    if (isset($_GET['roblib_query'])) {
      $query = $_GET['roblib_query'];
    }
    else {
      return '';
    }
  }
  
  $query = str_replace(' ', '%20', $query);
  //http://cufts2.lib.sfu.ca/CJDB/PCU/browse/show?browse_field=title&search_type=startswith&format=json&search_terms=dog&submit=Search
  $url = variable_get('roblib_search_cufts_url', 'http://cufts2.lib.sfu.ca/CJDB/PCU/browse/show?');
  $url_suffix = variable_get('roblib_search_cufts_search_suffix', 'browse_field=title&search_type=startswith&format=json&search_terms=');
  $number_of_records = variable_get('roblib_search_cufts_num_results', '5');
  $search_url = $url . $url_suffix . $query . '&submit=Search';
  
  //get the total number of result
  $results = drupal_http_request($search_url);
  if ($results->code == '200') {
    $output = $results->data;
  }
  else {
    $output = $results->status_message;
  }
  $start_index = strpos($output,'"total_count":')+  strlen('"total_count":');
  $end_index = strlen($output)-1;
  $length=$end_index-$start_index;
  $num_of_result = substr($output,$start_index,$length);
  
  $search_url = $search_url . '&per_page='.$number_of_records;
  $results = drupal_http_request($search_url);
  
  if ($results->code == '200') {
    $output = $results->data;
  }
  else {
    $output = $results->status_message;
  }
  
  $output = str_replace('"total_count":', '"numOfResults":'.$num_of_result.',"total_count":',$output);
  return $output;
}

/**
 * Implements hook_help().
 *
 * @param type $path
 * @param type $arg
 * @return type
 */
function roblib_search_cufts_help($path, $arg) {
  switch ($path) {
    case 'admin/help#roblib_search_cufts':
      return t(
              '<p>
         provides a target for the Roblib search module.  This target uses javascript 
         to render the results. 
         </p>'
      );
  }
}