<?php
/* $Id $ */

/**
 * @file
 * Redirects main feed requests to a FeedBurner feed
 */

define("FEEDBURNER_DEFAULT_USERAGENTS", "feedburner|feedvalidator");

/**
 * Implementation of hook_help()
 */
function feedburner_help($section) {
  switch ($section) {
    case 'admin/help#feedburner':
      return '<p>'. t("Redirects requests for your site's feed to a FeedBurner feed while still allowing FeedBurner to access the feed.") .'</p>';
      break;
    case 'admin/settings/feedburner':
      $build_link = l('FeedBurner feeds', 'admin/build/feedburner');
      return '<p>'. t("These are the settings for the FeedBurner module. Once you have everything set, check out your site's $build_link") .'</p>';
      break;
    case 'admin/build/feedburner':
      $settings_link = l('FeedBurner options', 'admin/settings/feedburner');
      return '<p>'. t("This is help for the FeedBurner site building page. Make sure to check out the $settings_link.") .'</p>';
      break;
    case 'admin/build/feedburner/add':
    case 'admin/build/feedburner/edit':
      return '<p>'. t('Be sure to check that you\'ve already created the FeedBurner feed. Future plans for this module possibly include the ability to automatically create new feeds with FeedBurner\'s Feed Management API.') .'</p>';
      break;
  }
}

/**
 * Implementation of hook_menu()
 */
function feedburner_menu($may_cache) {
  $items = array();

  if ($may_cache) {
    $items[] = array(
      'path' => 'admin/settings/feedburner',
      'title' => t('FeedBurner'),
      'description' => t('Administer FeedBurner integration.'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('feedburner_admin_settings'),
      'access' => user_access('administer site configuration'),
      'type' => MENU_NORMAL_ITEM
    );
    $items[] = array(
      'path' => 'admin/build/feedburner',
      'title' => t('FeedBurner'),
      'description' => t('Change FeedBurner redirection'),
      'callback' => 'feedburner_admin_build',
      'access' => user_access('administer FeedBurner')
    );
    $items[] = array(
      'path' => 'admin/build/feedburner/edit',
      'title' => t('Edit feed redirection'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('feedburner_admin_build_edit'),
      'access' => user_access('administer FeedBurner'),
      'type' => MENU_CALLBACK
    );
    $items[] = array(
      'path' => 'admin/build/feedburner/remove',
      'title' => t('Delete feed redirection'),
      //'callback' => 'drupal_get_form',
      //'callback arguments' => array('feedburner_admin_build_remove'),
      'callback' => 'feedburner_admin_build_remove',
      'access' => user_access('administer FeedBurner'),
      'type' => MENU_CALLBACK
    );
    $items[] = array(
      'path' => 'admin/build/feedburner/list',
      'title' => t('List'),
      'type' => MENU_DEFAULT_LOCAL_TASK,
      'weight' => -10
    );
    $items[] = array(
      'path' => 'admin/build/feedburner/add',
      'title' => t('Add feed redirection'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('feedburner_admin_build_edit'),
      'access' => user_access('administer FeedBurner'),
      'type' => MENU_LOCAL_TASK
    );
  }
  else {
    _feedburner_do_redirect();
  }
  return $items;
}

/**
 * Implementation of hook_perm().
 */
function feedburner_perm() {
  return array('administer FeedBurner', 'view FeedFlare');
}

/**
 * Implementation of hook_block().
 */
function feedburner_block($op = 'list', $delta = 0, $edit = array()) {
  if ($op == 'list') {
    $blocks[0]['info'] = t('FeedBurner FeedFlare');
    //$blocks[1]['info'] = t('FeedBurner Stats');
    return $blocks;
  }
  else if ($op == 'view') {
    if ($delta == 0 && arg(0) == 'node' && is_numeric(arg(1))) {
      $node = node_load(arg(1));
      $feedflare = _feedburner_get_feedflare($node->nid, $node->type, $node->path, TRUE);
      if ($feedflare != FALSE) {
        $block['subject'] = t('FeedFlare');
        $block['content'] = $feedflare;
      }
    }
    /*else if ($delta == 1) {
      $block['subject'] = t('FeedBurner Stats');
      $block['content'] = t('This is where I would put the FeedBurner Awareness API stats.');
    }*/
    return $block;
  }
}

/**
 * Implementation of hook_cron().
 */
/*function feedburner_cron() {
  _feedburner_check_feedmedic();
}

function _feedburner_check_feedmedic() {
  $cron_last = variable_get('cron_last');
  include_once((drupal_get_path('module', 'feedburner'). '/xml.php.inc'));
  $fb_username = variable_get('feedburner_username', NULL);
  if (empty($fb_username)) {
    return FALSE;
  }
  $request = drupal_http_request('http://feeds.feedburner.com/~u/'. $fb_username);
  if ($request->code != 200) {
    return FALSE;
  }
  $fb_feedmedic = XML_unserialize($request->data);
  $fb_feedmedic = $fb_feedmedic['rss']['channel'];
  $feeds = _feedburner_get_redirects();
  foreach($data['item'] as $item) {
    if (strtotime($item['pubDate']) > $cron_last) {
      foreach($feeds as $feed_uri => $feed_feedburner) {
        if (strpos($item['title'], 'http://feeds.feedburner.com/'. $feed_feedburner)) {
          //$watchdog = $item['title'] .'<br />'. strip_tags(preg_replace('/(?:<br \/>){2,}/i', '', preg_replace('/<p>|\n|\r/i', '<br />', $item['description'])), '<a><br>');
          //$watchdog = $item['title'] .'<br />'. strip_tags(preg_replace('/<p>|\n|\r/i', '<br />', $item['description']), '<a><br>');
          $watchdog = $item['title'] .'<br />'. strip_tags(preg_replace('/(?:<br \/>|<p>|\\n|\\r){1,}/i', '<br />', $item['content:encoded']), '<a><br>');
          $severity = (strpos($item['title'], 'PROBLEM') !== FALSE ? WATCHDOG_WARNING : WATCHDOG_NOTICE);
          //echo "<pre>". htmlspecialchars($watchdog) ."</pre>";
          watchdog('feedburner', $watchdog, $severity, 'http://www.feedburner.com/fb/a/myfeeds');
        }
      }
    }
    else {
      return;
    }
  }
  $data = $data['rss']['channel'];
  $build_date = $data['lastBuildDate'];
  return $build_date;
}*/

/**
 * Implementation of hook_user().
 *
 * Allows the user to set FeedBurner redirection for his/her own blog's feed.
 */
function feedburner_user($op, &$edit, &$account, $category = NULL) {
  if (module_exists('blog') && user_access('edit own blog') && variable_get('feedburner_blogs', FALSE)) {
    $user_blog = 'blog/'. $account->uid .'/feed';
    if ($op == 'form' && $category == 'account') {
      $feeds = _feedburner_get_redirects();
      $form['feedburner'] = array(
        '#type' => 'fieldset',
        '#title' => t('Blog FeedBurner Redirection'),
        '#weight' => 1,
        '#collapsible' => TRUE,
        '#description' => t('Requests for your blog\'s feed (%url) will be redirected to this FeedBurner feed. Leave this blank to disable redirection.', array('%url' => url($user_blog, NULL, NULL, TRUE))),
      );
      $form['feedburner']['feedburner_uri'] = array(
        '#type' => 'textfield',
        //'#title' => t('FeedBurner URL'),
        '#maxlength' => 100,
        '#size' => 30,
        '#default_value' => $feeds[$user_blog],
        '#field_prefix' => 'http://feeds.feedburner.com/',
        '#description' => t('This URI is case-sensitive and alphanumeric.')
      );
      return $form;
    }
    elseif ($op == 'validate') {
      $edit['feed_uri'] = $user_blog;
      feedburner_admin_build_edit_validate(NULL, $edit);
      unset($edit['feed_uri']);
    }
    elseif ($op == 'update') {
      if ($edit['status'] == 0) {
        _feedburner_update_feed($user_blog);
      } else {
        _feedburner_update_feed($user_blog, $edit['feedburner_uri']);
        unset($edit['feedburner_uri']);
      }
    }
    elseif ($op == 'delete') {
      _feedburner_update_feed($user_blog);
    }
  }
}

/**
 * Implementation of nodeapi().
 */
function feedburner_nodeapi(&$node, $op, $teaser, $page) {
  if ($op == 'view') {
    $display = variable_get('feedburner_feedflare', 0);
    if ($display == 3 || ($display == 1 && $teaser) || ($display == 2 && $page)) {
      $feedflare = _feedburner_get_feedflare($node->nid, $node->type, $node->path);
      if ($feedflare != FALSE) {
        $node->content['feedflare'] = array(
          '#value' => $feedflare,
          '#weight' => 10,
        );
      }
    }
  }
}

/**
 * Implementation of hook_exit().
 *
 * Don't let requests by FeedBurner or Feed Validator be cached by the Drupal
 * system. If feeds are cached, regular users then may be served the cached
 * version of instead of being properly redirected.
 */
function feedburner_exit($destination = NULL) {
  $useragent = $_SERVER['HTTP_USER_AGENT'];
  $useragents = '/'. variable_get('feedburner_useragents', FEEDBURNER_DEFAULT_USERAGENTS)  .'/i';
  if (isset($_GET['no_feed_redirect']) || preg_match($useragents, $useragent)) {
    global $base_root;
    cache_clear_all($base_root . request_uri(), 'cache_page');
  }
  return;
}

function feedburner_admin_build() {
  $feeds = _feedburner_get_feeds();

  /*if (empty($_GET['order']) || $_GET['order'] == 'Feed URI') {
    if ($_GET['sort'] == 'desc') {
      krsort($feeds);
    }
    else {
      ksort($feeds);
    }
  }
  else {
    uasort($feeds, create_function('$a,$b', '$field = strtolower($_GET["order"]); $result = strcmp($a[$field], $b[$field]); return ($_GET["sort"] == "desc" ? -$result : $result);'));
  }*/
  ksort($feeds);

  $header = array(
    array('data' => t('Feed URI'), /*'field' => 'uri'*/),
    array('data' => t('Name'), /*'field' => 'title'*/),
    array('data' => t('FeedBurner URI'), /*'field' => 'feedburner'*/),
    array('data' => t('Redirect Operations'), 'colspan' => '2')
  );

  //$destination = drupal_get_destination();
  foreach ($feeds as $feed_uri => $feed_values) {
    $row = array(
      check_plain($feed_uri),
      check_plain($feed_values['name']));
    if (empty($feed_values['feedburner_uri'])) {
      $row[] = '<em>None</em>';
      $row[] = array('data' => l(t('add'), 'admin/build/feedburner/edit', array(), 'feed_uri='. $feed_uri /*.'&'. $destination*/), 'colspan' => '2');
    }
    else {
      $row[] = l($feed_values['feedburner_uri'], 'http://feeds.feedburner.com/'. $feed_values['feedburner_uri']);
      $row[] = l(t('edit'), 'admin/build/feedburner/edit', array(), 'feed_uri='. $feed_uri /*.'&'. $destination*/);
      $row[] = l(t('remove'), 'admin/build/feedburner/remove', array(), 'feed_uri='. $feed_uri /*.'&'. $destination*/);
    }
    $rows[] = $row;
  }

  /*if (empty($feeds)) {
    $rows[] = array(array('data' => t('No FeedBurner redirects available.'), 'colspan' => '4'));
  }*/

  $output = theme('table', $header, $rows);

  //TODO: Split feed listings into two categories: regular and blog feeds
  /*$output .= '<div><h2>Blog Feeds</h2></div>';
  $blog_feeds = _feedburner_get_blog_feeds();
  $header = array(
    array('data' => t('Blog Feed URI')),
    array('data' => t('Name')),
    array('data' => t('FeedBurner URI')),
    array('data' => t('Redirect Operations'), 'colspan' => '2')
  );
  $rows = array();
  foreach ($blog_feeds as $feed_uri => $feed_values) {
    $row = array(
      check_plain($feed_uri),
      check_plain($feed_values['name']));
    if (empty($feed_values['feedburner_uri'])) {
      $row[] = '<em>None</em>';
      $row[] = array('data' => l(t('add'), 'admin/build/feedburner/edit', array(), 'feed_uri='. $feed_uri), 'colspan' => '2');
    }
    else {
      $row[] = l($feed_values['feedburner_uri'], 'http://feeds.feedburner.com/'. $feed_values['feedburner_uri']);
      $row[] = l(t('edit'), 'admin/build/feedburner/edit', array(), 'feed_uri='. $feed_uri);
      $row[] = l(t('remove'), 'admin/build/feedburner/remove', array(), 'feed_uri='. $feed_uri);
    }
    $rows[] = $row;
  }
  $output .= theme('table', $header, $rows);*/

  return $output;
}

function feedburner_admin_build_edit() {
  $feed_uri = check_plain($_GET['feed_uri']);
  $feedburner_uri = '';
  $add = empty($feed_uri) && !isset($feeds[$feed_uri]);

  if ($add) {
    drupal_set_title('Add FeedBurner Redirect');
  } else {
    drupal_set_title('Edit FeedBurner Redirect');
    $feeds = _feedburner_get_feeds();
    $feedburner_uri = $feeds[$feed_uri]['feedburner_uri'];
  }

  $form['feed_uri'] = array(
    '#type' => 'textfield',
    '#title' => t('Local Feed URI'),
    '#default_value' => $feed_uri,
    '#size' => 30,
    '#disabled' => !$add,
    '#description' => t('The existing feed on your site.'),
    '#field_prefix' => url(NULL, NULL, NULL, TRUE));
  $form['feedburner_uri'] = array(
    '#type' => 'textfield',
    '#title' => t('FeedBurner Feed URI'),
    '#default_value' => $feedburner_uri,
    '#maxlength' => 100,
    '#size' => 30,
    '#description' => t('Requests to the above feed will be requested to this FeedBurner feed. This URI is case-sensitive and alphanumeric.'),
    '#field_prefix' => 'http://feeds.feedburner.com/');
  /*$form['add'] = array(
    '#type' => 'hidden',
    '#value' => $add
  );*/
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => ($add ? t('Create redirection') : t('Update redirection'))
  );

  return $form;
}

function feedburner_admin_build_edit_validate($form_id, $form_values) {
  $feed_uri = $form_values['feed_uri'];
  $feedburner_uri = $form_values['feedburner_uri'];
  $feeds = _feedburner_get_redirects();
  if (!_feedburner_is_valid_feed(url($feed_uri, 'no_feed_redirect', NULL, TRUE))) {
    form_set_error('feed_uri', t('The specified local feed URI does not exist.'));
  }
  else if (!_feedburner_is_valid_feed_name($feedburner_uri)) {
    form_set_error('feedburner_uri', t('Invalid FeedBurner feed URI (alphanumeric only, no spaces or special characters).'));
  }
  else if (!_feedburner_is_valid_feed('http://feeds.feedburner.com/'. $feedburner_uri)) {
    form_set_error('feedburner_uri', t('It looks like you haven\'t created the feed %feedburner_uri at FeedBurner yet. You can do so by following !url.', array('%feedburner_uri' => $feedburner_uri, '!url' => l('this link', 'https://www.feedburner.com/fb/a/addfeed', NULL, 'sourceUrl='. url($feed_uri, NULL, NULL, TRUE) .'&mappedUri='. $feedburner_uri))), 'error');
  }
}

function feedburner_admin_build_edit_submit($form_id, $form_values) {
  $feed_uri = $form_values['feed_uri'];
  $feedburner_uri = $form_values['feedburner_uri'];
  if (_feedburner_update_feed($feed_uri, $feedburner_uri) == TRUE) {
    drupal_set_message(t('The FeedBurner redirect has been saved.'));
  }
  return 'admin/build/feedburner';
}

function feedburner_admin_build_remove() {
  if (_feedburner_update_feed($_GET['feed_uri']) == TRUE) {
    drupal_set_message(t('The FeedBurner redirection has been removed.'));
  }
  drupal_goto('admin/build/feedburner');
}

/*function feedburner_admin_build_remove() {
  if (user_access('administer FeedBurner')) {
    $form['feed_uri'] = array(
      '#type' => 'value',
      '#value' => $_GET['feed_uri']
    );
    $output = confirm_form(
        $form,
        t('Are you sure you want to delete FeedBurner redirection for %url?', array('%url' => $_GET['feed_uri'])),
        $_GET['destination'] ? $_GET['destination'] : 'admin/build/feedburner',
        t('This action cannot be undone, but you can always re-add it at anytime.'),
        t('Delete'),
        t('Cancel')
    );
  }
  return $output;
}

function feedburner_admin_build_remove_submit($form_id, $form_values) {
  if ($form_values['confirm']) {
    _feedburner_update_feed($form_values['feed_uri']);
    drupal_set_message(t('The FeedBurner redirection has been removed.'));
    return 'admin/build/feedburner';
  }
}*/

/**
 * Defines FeedBurner admin settings form
 */
function feedburner_admin_settings() {
  $form['redirection'] = array(
    '#type' => 'fieldset',
    '#title' => t('Feed Redirection')
  );
  $form['redirection']['feedburner_redirect_status'] = array(
    '#type' => 'select',
    '#title' => t('Redirect Header Status'),
    '#default_value' => variable_get('feedburner_redirect_status', 307),
    '#options' => array(
      301 => '301 Moved Permanently',
      302 => '302 Found',
      307 => '307 Temporary Redirect'),
    '#description' => t('Note that FeedBurner recommends the use of the 307 Temporary Redirect in <a href="-link">this forum post</a>. For detailed descriptions of HTTP redirect status codes, see <a href="http://en.wikipedia.org/wiki/List_of_HTTP_status_codes#3xx_Redirection">http://en.wikipedia.org/wiki/List_of_HTTP_status_codes</a>.')
  );
  $form['redirection']['feedburner_blogs'] = array(
    '#type' => 'checkbox',
    '#title' => t('Allow users to specify his/her own blog FeedBurner feed.'),
    '#default_value' => variable_get('feedburner_blogs', FALSE),
    '#description' => t('If enabled, this option can be found in the edit user screen. The permission \'edit own blog\' needs to be enabled for this feature.')
  );
  $form['feedflare'] = array(
    '#type' => 'fieldset',
    '#title' => t('FeedFlare/Standard Stats/Ad Network'),
    '#description' => t('See <a href="http://www.feedburner.com/fb/a/publishers/feedflare">http://www.feedburner.com/fb/a/publishers/feedflare</a> for more information.'),
    '#collapsible' => FALSE
  );
  if (!array_key_exists('rss2.xml', _feedburner_get_redirects())) {
    $form['feedflare']['notice'] = array(
      '#value' => '<p><strong>FeedFlare is only enabled when you have a FeedBurner feed for your site\'s main feed (rss.xml).</strong></p>',
    );
  }
  $form['feedflare']['feedburner_feedflare_node_types'] = array(
    //'#type' => 'checkboxes',
    '#type' => 'select',
    '#title' => t('Node types'),
    '#multiple' => TRUE,
    '#default_value' => variable_get('feedburner_feedflare_node_types', array()),
    '#options' => node_get_types('names')
  );
  $form['feedflare']['feedburner_feedflare'] = array(
    '#type' => 'select',
    '#title' => t('FeedFlare in nodes'),
    '#default_value' => variable_get('feedburner_feedflare', 0),
    '#disabled' => !array_key_exists('rss.xml', _feedburner_get_redirects()),
    '#options' => array(
      0 => t('Disabled'),
      1 => t('Teaser view'),
      2 => t('Full-page view'),
      3 => t('Teasers and full-page view')),
    '#description' => t('When to display the FeedFlare after the node text.'),
  );

  /*$form['account'] = array(
    '#type' => 'fieldset',
    '#title' => t('FeedBurner Account'),
    '#description' => t('Currently your username and password are stored as plaintext in the Drupal database. FeedBurner has yet to allow more secure methods of authentication.'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE
  );
  $form['account']['feedburner_username'] = array(
    '#type' => 'textfield',
    '#title' => t('Your FeedBurner username'),
    '#default_value' => variable_get('feedburner_username', ''),
    '#size' => 30,
    '#maxlength' => 30
  );*/
  /*$form['account']['feedburner_password'] = array(
    '#type' => 'password',
    '#title' => t('Your FeedBurner account password'),
    '#default_value' => variable_get('feedburner_password', ''),
    '#size' => 30,
    '#maxlength' => 30
  );*/

  $form['advanced'] = array(
    '#type' => 'fieldset',
    '#title' => t('Advanced Settings'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE
  );
  $form['advanced']['feedburner_useragents'] = array(
    '#type' => 'textarea',
    '#title' => t('Allowed User Agents'),
    '#description' => t('Enter a list of user agents (one per line) that are allowed direct access to your site\'s Feeds and will not be redirected to the FeedBurner feeds.'),
    '#default_value' => preg_replace('/\\|/', "\n", variable_get('feedburner_useragents', FEEDBURNER_DEFAULT_USERAGENTS)),
    '#rows' => 3,
  );

  return system_settings_form($form);
}

function feedburner_admin_settings_validate($form_id, $form_values, $form) {
  // Correct and format useragents
  $useragents = $form_values['feedburner_useragents'];
  $useragents = preg_replace('/(\\r?\\n)+/', '|', $useragents);
  form_set_value($form['advanced']['feedburner_useragents'], $useragents);
}

/*function feedburner_admin_settings_submit($form_id, &$form_values) {
  $form_values['feedburner_encrypted'] = base64_encode($form_values['feedburner_user'] .':'. $form_values['feedburner_pass']);
  unset($form_values['feedburner_pass'];
}*/

/**
 * Redirects the current request to an appropriate FeedBurner feed if the user
 * agent doesn't match those specified by the user to be able to access the
 * direct feeds.
 */
function _feedburner_do_redirect() {
  $feeds = _feedburner_get_redirects();
  $useragent = $_SERVER['HTTP_USER_AGENT'];
  $useragents = '/'. variable_get('feedburner_useragents', FEEDBURNER_DEFAULT_USERAGENTS) .'/i';
  if (empty($feeds) || empty($useragent) || preg_match($useragents, $useragent) || isset($_GET['no_feed_redirect'])) {
    return;
  }

  // Make sure we can load paths
  drupal_bootstrap(DRUPAL_BOOTSTRAP_PATH);
  $path = $_GET['q'];
  if (isset($feeds[$path])) {
    drupal_goto('http://feeds.feedburner.com/'. $feeds[$path], null, null, intval(variable_get('feedburner_redirect_status', 307)));
  }
}

/**
 * Returns an array of active redirects
 */
function _feedburner_get_redirects() {
  return variable_get('feedburner_feeds', array());
}

/**
 * Returns an array of all of the feeds available on the site including user blogs
 */
function _feedburner_get_feeds() {
  $feeds = array();
  $feeds['rss.xml'] = array('name' => 'Main RSS');

  // Comments RSS integration
  if (module_exists('commentrss')) {
    $feeds['crss'] = array('name' => 'Comment RSS');
  }

  // Atom module integration
  /*if (module_exists('atom')) {
    $feeds['feed/atom'] = array('name' => 'SiteName ATOM');
  }*/

  // View RSS integration
  if (module_exists('views_rss')) {
    $result = db_query("SELECT url, page_title FROM {view_view} WHERE page_type = 'views_rss'");
    while ($view_feed = db_fetch_array($result)) {
      $feeds[$view_feed['url']] = array('name' => $view_feed['page_title']);
    }
  }

  // Blog integration
  if (module_exists('blog')) {
    $feeds['blog/feed'] = array('name' => 'Blogs RSS');
    // Get each user's blog feed as well
    $result = db_query('SELECT u.uid, u.name FROM {users} u WHERE u.status = 1');
    while ($user_details = db_fetch_array($result)) {
      $feeds['blog/'. $user_details['uid'] .'/feed'] = array('name' => $user_details['name'] .'\'s Blog');
    }
  }

  // Change each url into it's path alias?
  /*foreach ($feeds as $name => &$url)
    //$url = drupal_get_path_alias($url);
    $url = drupal_get_normal_path($url);
  }*/

  // Merge current redirects into feed array
  $redirects = _feedburner_get_redirects();
  foreach ($redirects as $k => $v) {
    $feeds[$k]['feedburner_uri'] = $v;
  }

  return $feeds;
}

/*function _feedburner_get_blog_feeds() {
  $feeds = array();
  if (module_exists('blog')) {
    $feeds['blog/feed'] = array('name' => 'Blogs RSS');
    $result = db_query('SELECT u.uid, u.name FROM {users} u WHERE u.status = 1');
    while ($user_details = db_fetch_array($result)) {
      $feeds['blog/'. $user_details['uid'] .'/feed'] = array('name' => $user_details['name'] .'\'s Blog');
    }
  }

  // Merge current redirects into feed array
  $redirects = _feedburner_get_redirects();
  foreach ($redirects as $k => $v) {
    if (isset($feeds[$k])) {
      $feeds[$k]['feedburner_uri'] = $v;

    }
  }

  return $feeds;
}*/

/**
 * Get the JavaScript code for FeedFlare
 */
function _feedburner_get_feedflare($nid, $type, $path = NULL) {
  $feedflare = FALSE;
  if (user_access('view FeedFlare')) {
    $feeds = _feedburner_get_redirects();
    $node_types = variable_get('feedburner_feedflare_node_types', array());
    if (isset($feeds['rss.xml']) && isset($node_types[$type])) {
      global $base_url;
      $node_url = $base_url .'/'. (empty($path) ? 'node/'. $nid : $path);
      $feedflare = '<script src="http://feeds.feedburner.com/'. $feeds['rss.xml'];
      $feedflare .= '?flareitem='. url('node/'. $nid, NULL, NULL, TRUE);
      $feedflare .= '" type="text/javascript" charset="utf-8"></script>';
    }
  }
  return $feedflare;
}

/**
 * Checks to see if a FeedBurner feed exists by trying to fetch the url.
 */
function _feedburner_is_valid_feed($url) {
  $request = drupal_http_request($url);
  return ($request->code == 200);
}

/**
 * Checks the syntax of a FeedBurner feed name. Can only contain letters,
 * numbers, backslashes, dashes or underscores.
 */
function _feedburner_is_valid_feed_name($feed) {
  return preg_match('/\\A[\\w\\x2D\\x2F]+\\z/i', $feed);
}

/**
 * Updates or removes a redirection.
 * @return
 *   True if the redirect was modified, false otherwise.
 */
function _feedburner_update_feed($feed, $feedburner = NULL) {
  $feeds = _feedburner_get_redirects();
  /*if (!empty($feedburner)) {
    $feeds[$feed] = $feedburner;
  }
  else if (isset($feeds[$feed])) {
    unset($feeds[$feed]);
  } else {
    return FALSE;
  }*/

  if ($feeds[$feed] !== $feedburner) {
  	if (empty($feedburner)) {
      /*if ($feed['url'] == 'rss.xml') {
        variable_set('feedburner_feedflare', FALSE);
      }*/
  		unset($feeds[$feed]);
  	}
  	else {
  		$feeds[$feed] = $feedburner;
  	}
  }
  else {
  	return FALSE;
  }
  variable_set('feedburner_feeds', $feeds);

  // Need to clear the cache for the feed page and also an alias if it is set
  global $base_url;
  cache_clear_all($base_url .'/'. $feed, 'cache_page');
  if (variable_get('clean_url', '0') == TRUE) {
    $alias = drupal_get_path_alias($feed);
    if ($alias != $feed) {
      cache_clear_all($base_url .'/'. $alias, 'cache_page');
    }
  }

  return TRUE;
}