<?php
// $Id: demo.module,v 1.19.2.10 2009-02-06 17:58:28 smk Exp $

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

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

/**
 * Implementation of hook_menu().
 */
function demo_menu() {
  $items = array();
  $admin_access = array('administer demo settings');

  $items['admin/build/demo'] = array(
    'title' => 'Demonstration site',
    'description' => 'Administer reset interval, create new dumps and manually reset this site.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('demo_admin_settings'),
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
  );
  $items['admin/build/demo/maintenance'] = array(
    'title' => 'Status',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => 0,
  );
  $items['admin/build/demo/manage'] = array(
    'title' => 'Manage snapshots',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('demo_manage'),
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
    'type' => MENU_LOCAL_TASK,
    'weight' => 1,
  );
  $items['admin/build/demo/dump'] = array(
    'title' => 'Create snapshot',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('demo_dump'),
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
  );
  $items['admin/build/demo/reset'] = array(
    'title' => 'Reset site',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('demo_reset_confirm'),
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
    'type' => MENU_LOCAL_TASK,
    'weight' => 3,
  );
  $items['admin/build/demo/delete/%'] = array(
    'title' => 'Delete snapshot',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('demo_delete_confirm', 4),
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
    'type' => MENU_CALLBACK,
  );
  $items['demo/autocomplete'] = array(
    'title' => 'Demo Site autocomplete',
    'page callback' => 'demo_autocomplete',
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
    'type' => MENU_CALLBACK,
  );
  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'),
        'status' => 1, 'region' => 'right', 'cache' => BLOCK_NO_CACHE);
      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($form, &$form_state) {
  require_once drupal_get_path('module', 'demo') .'/demo.admin.inc';
  demo_reset_confirm_submit($form, $form_state);
}

/**
 * Implementation of hook_cron().
 */
function demo_cron() {
  if ($interval = variable_get('demo_reset_interval', 0)) {
    // See if it's time for a reset.
    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());
    }
  }
}