<?php

/**
 * @file
 */

/**
 * Implements hook_ctools_plugin_api().
 */
function ldap_feeds_ctools_plugin_api($owner, $api) {
  if ($owner == 'feeds' && $api == 'plugins') {
    return ['version' => 1];
  }
}

/**
 * Implements hook_feeds_plugins().
 */
function ldap_feeds_feeds_plugins() {

  $path = drupal_get_path('module', 'ldap_feeds');
  $info = [];

  $info['FeedsLdapQueryFetcher'] = [
    'name' => 'LDAP Query Fetcher',
    'description' => 'Fetch content from ldap query',
    'handler' => [
       // This is the key name, not the class name.
      'parent' => 'FeedsFetcher',
      'class' => 'FeedsLdapQueryFetcher',
      'file' => 'FeedsLdapQueryFetcher.inc',
      'path' => $path,
    ],
  ];

  $info['FeedsDrupalUserLdapEntryFetcher'] = [
    'name' => 'Drupal User LDAP Entry Fetcher',
    'description' => 'Fetches one entry for each LDAP authenticated user.  Fetches both LDAP entry attributes such as
    <code>cn, dn,</code> etc.
      and Drupal user data such as <code>uid, name, mail, created, status, language, </code>and <code>signature</code>.
      Make sure to add dn in your LDAP query for this parser, if you use custom attributes.',
    'handler' => [
      // This is the key name, not the class name.
      'parent' => 'FeedsFetcher',
      'class' => 'FeedsDrupalUserLdapEntryFetcher',
      'file' => 'FeedsDrupalUserLdapEntryFetcher.inc',
      'path' => $path,
    ],
  ];

  $info['FeedsLdapEntryParser'] = [
    'name'        => t('LDAP Entry Parser for Feeds'),
    'description' => t('Parse an LDAP Entry Array'),
    'handler'     => [
      'parent' => 'FeedsParser',
      'class'  => 'FeedsLdapEntryParser',
      'file'   => 'FeedsLdapEntryParser.inc',
      'path'   => $path,
    ],
  ];

  return $info;

}

/**
 * Implements hook_enable().
 *
 * Clear Feed's plugin cache so that this plugin shows up.
 */
function ldap_feeds_enable() {
  cache_clear_all('plugins:feeds:plugins', 'cache');
}

/**
 *
 */
function ldap_feeds_drupal_user_attributes() {

  $attributes = [
    'uid' => ['token' => 'drupal.uid', 'description' => 'Drupal used id.  e.g. 413'],
    'name' => ['token' => 'drupal.name', 'description' => 'Drupal username.  e.g. jdoe'],
    'mail' => ['token' => 'drupal.mail', 'description' => 'Drupal email address.  e.g. jdoe@gmail.com'],
    'created' => ['token' => 'drupal.created', 'description' => 'Drupal account created timestamp in unix e.g. 432432432'],
    'status' => ['token' => 'drupal.status', 'description' => 'Drupal user status  e.g. 1 or 0'],
    'language' => ['token' => 'drupal.language', 'description' => 'Drupal language.'],
    'signature' => ['token' => 'drupal.signature', 'description' => 'Drupal signature.  e.g. Happy Joe'],
    'login' => ['token' => 'drupal.login', 'description' => 'Drupal unix timestamp of last login  e.g. 1317494439'],
    'init' => ['token' => 'drupal.init', 'description' => 'Drupal user init  e.g. jdoe@gmail.com'],
  ];
  // ldap_authentication and some other modules may want to add additional drupal user tokens
  // largely derived from the $user->data array, but possibly from related data such as authmaps
  // some use cases for alter are simply edge cases.
  drupal_alter('ldap_feeds_drupal_user_attributes', $attributes);

  return $attributes;
}

/**
 * Show some sample ldap user data to help with mapping interface.
 */
function ldap_feeds_form_feeds_ui_mapping_form_alter(&$form, &$form_state, $form_id) {

  $importer = feeds_importer_load($form['#importer']);

  if ($importer->config['fetcher']['plugin_key'] == 'FeedsDrupalUserLdapEntryFetcher') {
    ldap_feeds_drupal_user_legend($form, $importer);
  }
  elseif ($importer->config['fetcher']['plugin_key'] == 'FeedsLdapQueryFetcher') {
    ldap_feeds_query_legend($form, $importer);
  }
}

/**
 * Add additional data to mapping form for ldap query fetcher.
 */
function ldap_feeds_query_legend(&$form, $importer) {

  $source = feeds_source($importer->id);
  $fetcher = feeds_plugin('FeedsLdapQueryFetcher', $source->importer->id);
}

/**
 *
 */
function _ldap_feeds_query_legend($records, $field_name) {
  $examples = [];
  foreach ($records as $i => $record) {
    $examples[] = $record[$field_name];
    if ($i > 5) {
      break;
    }
  }
  return join(', ', array_filter($examples));
}

/**
 * Add additional data to mapping form for drupal user fetcher.
 */
function ldap_feeds_drupal_user_legend(&$form, $importer) {

  $sources = [];
  $servers = ldap_servers_get_servers(NULL, 'enabled');
  $form['legendset']['#description'] = "";
  $drupal_user_attributes = $importer->config['fetcher']['config']['availableDrupalUserAttributes'];

  foreach ($drupal_user_attributes as $attr_name => $attr_conf) {
    $id = $attr_conf['token'];
    $sources[$id] = ['name' => ['#markup' => $id], 'description' => ['#markup' => '']];
  }

  foreach ($servers as $sid => $ldap_server) {
    if ($ldap_server->testingDrupalUsername) {
      $account = user_load_by_name($ldap_server->testingDrupalUsername);

      foreach ($drupal_user_attributes as $attr_name => $attr_conf) {
        if ($attr_name == 'count') {
          continue;
        }
        $id = $attr_conf['token'];
        if ($account) {
          $sources[$id] = ['name' => ['#markup' => $id], 'description' => ['#markup' => $account->{$attr_name}]];
        }
      }

      $ldap_user = ldap_servers_get_user_ldap_data($ldap_server->testingDrupalUsername, $sid);
      foreach ($ldap_user['attr'] as $id => $value) {
        if (!is_numeric($id) && is_scalar($ldap_user['attr'][$id][0]) && $ldap_user['attr'][$id]['count'] == 1) {
          $sources[$id] = ['name' => ['#markup' => $id], 'description' => ['#markup' => $ldap_user['attr'][$id][0]]];
        }
        elseif ($ldap_user['attr'][$id]['count'] > 1) {
          $item = t('MULTIVALUED ATTRIBUTE:') . join(" , \n", $ldap_user['attr'][$id]);
          $sources[$id] = ['name' => ['#markup' => $id], 'description' => ['#markup' => $item]];
        }
      }
      $form['legendset']['#description'] .= t('LDAP Attributes in the source "description" column are from testing ldap user (%testing_user) on the server %sid, which is configured in
        the ldap server form.', ['%sid' => $sid, '%testing_user' => $ldap_server->testingDrupalUsername]);
    }
    else {
      foreach (['dn' => 'distinguished name', 'cn' => 'cname'] as $id => $value) {
        $sources[$id] = ['name' => ['#markup' => $id], 'description' => ['#markup' => $value]];
      }
    }
  }
  $form['legendset']['legend']['sources'] = $sources;

}