<?php
// $Id: author_pane.module,v 1.1 2008-12-21 20:38:28 michellec Exp $

/**
 * @file
 * Gathers information from user related contrib modules into one template.
 */

// DRUPAL HOOKS **************************************************************/


/**
 * Implementation of hook_theme().
 */
function author_pane_theme() {
  author_pane_include('author-pane.inc');
  $items['author_pane'] = array(
      'template' => 'author-pane',
      'arguments' => array('account' => NULL, 'image_path' => NULL),
  );

  return $items;
}

// TEMPLATE PREPROCESS *******************************************************/

/**
 * Load advanced forum files on behalf of modules.
 *
 * This function, taken from the views include system, allows us to include
 * an appropriately named include file bundled with any enabled module.
 * It is currently used only to load the MODULE.author-pane.inc files which
 * allow other modules to add to the author pane.
 */
function author_pane_include($file) {
  static $cache;

  $includes = array();

  if (!isset($cache->data) || !$cache->data) {
    $cache = cache_get('author_pane_includes', 'cache');
  }

  if (isset($cache->data) && $cache->data) {
    $includes = $cache->data;
  }
  else {
    $author_pane_path = drupal_get_path('module', 'author_pane') . '/modules';
    foreach (module_list() as $module) {
      $module_path = drupal_get_path('module', $module);
      if (file_exists("$module_path/$module.$file")) {
        $includes[] = "./$module_path/$module.$file";
      }
      else if (file_exists("$module_path/includes/$module.$file")) {
        $includes[] = "./$module_path/includes/$module.$file";
      }
      else if (file_exists("$author_pane_path/$module.$file")) {
        $includes[] = "./$author_pane_path/$module.$file";
      }
    }
    cache_set('author_pane_includes', $includes);
  }

  if (!empty($includes)) {
    foreach ($includes as $include) {
      require_once $include;
    }
  }
}

/**
 * Preprocesses template variables for the author info template.
 */
function template_preprocess_author_pane(&$variables) {
  author_pane_include('author-pane.inc');

  // The passed in $variables['account'] refers to the user who's info is in the pane.
  $account = $variables['account'];
  $account_id = $account->uid;
  $image_path = $variables['image_path'];

  drupal_add_css(drupal_get_path('module', 'author_pane') . '/author_pane.css');
  
  // Get a reference to the currently logged in user.
  global $user;

  // Username
  $variables['account_name'] =  theme('username', $account);
  $variables['account_id'] = $account_id;

  // Avatar
  $variables['picture'] = theme('user_picture', $account);

  // Nothing else applies to anon users, so just stop here
  if ($account_id == 0) {
    return;
  }

  // Join date / since
  $just_date = str_replace(array('H:i', 'g:ia', ' - '), '', variable_get('date_format_short', 'm/d/Y - H:i'));
  $variables['joined'] = format_date($account->created, 'custom', $just_date);

  $variables['joined_ago'] = format_interval(time() - $account->created);

  // Online status
  $variables['last_active'] = format_interval(time() - $account->access);
  if (round((time()-$account->access)/60) < 15) {
    $variables['online_icon'] = theme('image', "$image_path/user-online.png", t('User is online'));
    $variables['online_status'] = t('Online');
  }
  else {
    $variables['online_icon'] = theme('image', "$image_path/user-offline.png", t('User offline. Last seen @time ago.', array('@time' => $variables['last_active'])));
    $variables['online_status'] = t('Offline');
  }

}