<?php
// $Id$

/**
 * Implementation of hook_help().
 */
function usertheme_help($section) {
  global $base_url;

  switch ($section) {
    // case 'admin/themes/user':
      // TODO: rewrite this text - return t('<p>These options control the default display settings for your entire site, across all themes. Unless they have been overridden by a specific theme, these settings will be used.</p>');
    case 'admin/modules#description':
      return t('Allows users to select the theme with which they view the site.');
  }
}

/**
 * Implementation of hook_perm().
 */
function usertheme_perm() {
  return array('select personal theme');
}

/**
 * Implementation of hook_menu().
 */
function usertheme_menu($may_cache) {
  global $user;
  $items = array();

  if ($may_cache) {
    // TODO: uncomment for use with usertheme_admin and usertheme_list_themes
    /* $items[] = array('path' => 'admin/themes/user', 'title' => t('user-selectable themes'),
      'callback' => 'usertheme_admin', 'access' => user_access('administer site configuration'),
      'type' => MENU_LOCAL_TASK, 'weight' => 5); */
  }
  else if (user_access('select personal theme') && !empty($user->theme)) {
    $GLOBALS['custom_theme'] = $user->theme;
  }

  return $items;
}

/**
 * Implementation of hook_user().
 *
 * Allows users to individually set their theme.
 */
function usertheme_user($type, $edit, &$user, $category = NULL) {
  if ($type == 'form' && $category == 'account' && user_access('select personal theme', $user)) {
    $themes = usertheme_list_themes();
    ksort($themes);

    if (count($themes) > 1) {
      $rows = array();
      foreach ($themes as $key => $value) {
        $row = array();

        // Screenshot column.
        $screenshot = dirname($value->filename) .'/screenshot.png';
        $row[] = file_exists($screenshot) ? theme('image', $screenshot, t('Screenshot for %theme theme', array('%theme' => $value->name)), '', array('class' => 'screenshot'), false) : t('no screenshot');

        // Information field.
        $row[] = '<strong>'. $value->name .'</strong>';

        // Reset to follow site default theme if user selects the site default
        if ($key == variable_get('theme_default', 'bluemarine')) {
          $key = '';
          if ($edit['theme'] == variable_get('theme_default', 'bluemarine')) {
            $edit['theme'] = '';
          }
        }

        // Selected column.
        $row[] = array('data' => form_radio('', 'theme', $key, ($edit['theme'] == $key) ? 1 : 0), 'align' => 'center');

        $rows[] = $row;
      }
      $header = array(t('Screenshot'), t('Name'), t('Selected'));
      $data[] = array('title' => t('Theme settings'), 'data' => form_item('', theme('table', $header, $rows), t('Selecting a different theme will change the look and feel of the site.')), 'weight' => 2);
      return $data;
    }
  }
}

/**
 * Menu callback: enable/disable user-selectable themes
 */
function usertheme_admin() {
  // TODO
}

/*
 * Generates a list_themes()-style output of ONLY themes which are user-selectable
 */
function usertheme_list_themes() {
  // TODO
  return list_themes();
}

?>