<?php

/**
 * @file
 * Find modules missing in file system.
 */

/**
 * Find modules that are missing from file system.
 */
function missing_module_find_missing($only_enabled = FALSE) {
  $missing = array();

  // Select all active modules from current database.
  $query = db_select('system')->fields('system', array('filename', 'name', 'status', 'info'));

  if ($only_enabled) {
    $query->condition('status', '1', '=');
  }
  else {
    $or = db_or();
    $or->condition('status', '1', '=');
    $and = db_and();
    $and->condition('status', '0', '=');
    $and->condition('schema_version', '-1', '>');
    $or->condition($and);
    $query->condition($or);
  }

  $result = $query->execute();

  foreach ($result as $node) {
    $path = DRUPAL_ROOT . '/' . $node->filename;

    if (!file_exists($path)) {
      $module_name = $node->name;

      $missing[$module_name] = array(
        'path' => $path,
        'status' => $node->status,
        'info' => unserialize($node->info),
      );
    }
  }

  return $missing;
}

/**
 * Implements hook_menu().
 */
function missing_module_menu() {
  $items['admin/reports/status/disable_module/%'] = array(
    'title' => 'Disable Module',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('missing_module_disable_confirm', 4),
    'access arguments' => array('administer modules'),
    'type' => MENU_CALLBACK,
    'file' => 'missing_module.form.inc',
  );
    $items['admin/reports/status/remove_module/%'] = array(
    'title' => 'Remove Module',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('missing_module_remove_confirm', 4),
    'access arguments' => array('administer modules'),
    'type' => MENU_CALLBACK,
    'file' => 'missing_module.form.inc',
  );
  return $items;
}