<?php

/**
 * @file
 * Demonstration site API Drupal integration functions.
 */

/**
 * Implements hook_perm().
 */
function demo_permission() {
  return array(
    'administer demo settings' => array(
      'title' => t('Create snapshots and reset the site'),
      'restrict access' => TRUE,
    ),
  );
}

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

  $items['admin/structure/demo'] = array(
    'title' => 'Snapshots',
    'description' => 'Create snapshots and reset the site.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('demo_manage_form'),
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
  );
  $items['admin/structure/demo/list'] = array(
    'title' => 'List',
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -10,
  );
  $items['admin/structure/demo/dump'] = array(
    'title' => 'Create snapshot',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('demo_dump_form'),
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
    'type' => MENU_LOCAL_ACTION,
  );
  $items['admin/structure/demo/reset'] = array(
    'title' => 'Reset',
    '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/structure/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_VISIBLE_IN_BREADCRUMB,
  );
  $items['admin/structure/demo/settings'] = array(
    'title' => 'Settings',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('demo_admin_settings'),
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
    'type' => MENU_LOCAL_TASK,
    'weight' => 10,
  );

  $items['demo/download'] = array(
    'page callback' => 'demo_download',
    'access arguments' => $admin_access,
    'file' => 'demo.admin.inc',
    'type' => MENU_CALLBACK,
  );
  return $items;
}

/**
 * Create a new snapshot.
 *
 * @param $options
 *   A structured array of snapshot options:
 *   - filename: The base output filename, without extension.
 *   - default: Whether to set this dump as new default snapshot.
 *   - description: A description for the snapshot. If a snapshot with the same
 *     name already exists and this is left blank, the new snapshot will reuse
 *     the existing description.
 *   - tables: An array of tables to dump, keyed by table name (including table
 *     prefix, if any). The value is an array of dump options:
 *     - schema: Whether to dump the table schema.
 *     - data: Whether to dump the table data.
 */
function demo_dump($options) {
  module_load_include('inc', 'demo', 'demo.admin');
  return _demo_dump($options);
}

/**
 * Reset site using snapshot.
 *
 * @param $filename
 *   Base snapshot filename, without extension.
 * @param $verbose
 *   Whether to output status messages.
 */
function demo_reset($filename, $verbose = TRUE) {
  module_load_include('inc', 'demo', 'demo.admin');
  return _demo_reset($filename, $verbose);
}