<?php
// $Id: demo.module,v 1.1.2.32 2009-07-12 00:09:52 sun Exp $

/**
 * @file
 * Demonstration Site module
 */

/**
 * Implementation of hook_perm().
 */
function demo_perm() {
  return array('administer demo settings');
}

/**
 * Implementation of hook_menu().
 */
function demo_menu($may_cache) {
  $items = array();
  if ($may_cache) {
    $admin_access = user_access('administer demo settings');
    $items[] = array(
      'path' => 'admin/build/demo',
      'title' => t('Demonstration site'),
      'description' => t('Administer reset interval, create new dumps and manually reset this site.'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('demo_admin_settings'),
      'access' => $admin_access,
    );
    $items[] = array(
      'path' => 'admin/build/demo/maintenance',
      'title' => t('Status'),
      'type' => MENU_DEFAULT_LOCAL_TASK,
      'weight' => 0,
    );
    $items[] = array(
      'path' => 'admin/build/demo/manage',
      'title' => t('Manage snapshots'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('demo_manage'),
      'access' => $admin_access,
      'type' => MENU_LOCAL_TASK,
      'weight' => 1,
    );
    $items[] = array(
      'path' => 'admin/build/demo/dump',
      'title' => t('Create snapshot'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('demo_dump'),
      'access' => $admin_access,
      'type' => MENU_LOCAL_TASK,
      'weight' => 2,
    );
    $items[] = array(
      'path' => 'admin/build/demo/reset',
      'title' => t('Reset site'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('demo_reset_confirm'),
      'access' => $admin_access,
      'type' => MENU_LOCAL_TASK,
      'weight' => 3,
    );
    $items[] = array(
      'path' => 'admin/build/demo/delete',
      'title' => t('Delete snapshot'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('demo_delete_confirm'),
      'access' => $admin_access,
      'type' => MENU_CALLBACK,
    );
    $items[] = array(
      'path' => 'demo/autocomplete',
      'callback' => 'demo_autocomplete',
      'access' => $admin_access,
      'type' => MENU_CALLBACK,
    );
    $items[] = array(
      'path' => 'demo/download',
      'callback' => 'demo_download',
      'access' => $admin_access,
      'type' => MENU_CALLBACK,
    );
  }
  else if (strpos($_GET['q'], 'admin/build/demo') === 0 || strpos($_GET['q'], 'demo') === 0) {
    require_once drupal_get_path('module', 'demo') . '/demo.admin.inc';
  }
  return $items;
}

/**
 * Implementation of hook_block().
 */
function demo_block($op = 'list', $delta = 0, $edit = array()) {
  switch ($op) {
    case 'list':
      $blocks[0] = array('info' => t('Demo site reset'), 'enabled' => 1, 'region' => 'right');
      return $blocks;

    case 'view':
      $block = array(
        'subject' => t('Reset demo'),
        'content' => drupal_get_form('demo_reset_now'),
      );
      return $block;
  }
}

function demo_reset_now() {
  $form['redirect'] = array(
    '#type' => 'value',
    '#value' => $_GET['q'],
  );
  $form['filename'] = array(
    '#type' => 'value',
    '#value' => variable_get('demo_dump_cron', 'demo_site'),
  );
  $form['snapshot'] = array(
    '#value' => t('Active snapshot: !snapshot', array('!snapshot' => variable_get('demo_dump_cron', 'demo_site'))),
  );
  $form['reset-demo'] = array(
    '#type' => 'submit',
    '#value' => t('Reset now'),
  );
  return $form;
}

function demo_reset_now_submit($form_id, $values) {
  require_once drupal_get_path('module', 'demo') . '/demo.admin.inc';
  return demo_reset_confirm_submit($form_id, $values);
}

/**
 * Implementation of hook_cron().
 */
function demo_cron() {
  if ($interval = variable_get('demo_reset_interval', 0)) {
    // See if it's time for a reset.
    $time = $_SERVER['REQUEST_TIME'];
    if (($time - $interval) >= variable_get('demo_reset_last', 0)) {
      require_once drupal_get_path('module', 'demo') . '/demo.admin.inc';
      demo_reset(variable_get('demo_dump_cron', 'demo_site'), FALSE);
      variable_set('demo_reset_last', $time);
    }
  }
}