<?php

/**
 * @file
 * Install, update, and uninstall functions for the Update Manager module.
 */

use Drupal\Core\Url;

/**
 * Implements hook_requirements().
 *
 * @return
 *   An array describing the status of the site regarding available updates. If
 *   there is no update data, only one record will be returned, indicating that
 *   the status of core can't be determined. If data is available, there will be
 *   two records: one for core, and another for all of contrib (assuming there
 *   are any contributed modules or themes enabled on the site). In addition to
 *   the fields expected by hook_requirements ('value', 'severity', and
 *   optionally 'description'), this array will contain a 'reason' attribute,
 *   which is an integer constant to indicate why the given status is being
 *   returned (UPDATE_NOT_SECURE, UPDATE_NOT_CURRENT, or UPDATE_UNKNOWN). This
 *   is used for generating the appropriate email notification messages during
 *   update_cron(), and might be useful for other modules that invoke
 *   update_requirements() to find out if the site is up to date or not.
 *
 * @see _update_message_text()
 * @see _update_cron_notify()
 */
function update_requirements($phase) {
  $requirements = [];
  if ($phase == 'runtime') {
    if ($available = update_get_available(FALSE)) {
      module_load_include('inc', 'update', 'update.compare');
      $data = update_calculate_project_data($available);
      // First, populate the requirements for core:
      $requirements['update_core'] = _update_requirement_check($data['drupal'], 'core');
      // We don't want to check drupal a second time.
      unset($data['drupal']);
      if (!empty($data)) {
        // Now, sort our $data array based on each project's status. The
        // status constants are numbered in the right order of precedence, so
        // we just need to make sure the projects are sorted in ascending
        // order of status, and we can look at the first project we find.
        uasort($data, '_update_project_status_sort');
        $first_project = reset($data);
        $requirements['update_contrib'] = _update_requirement_check($first_project, 'contrib');
      }
    }
    else {
      $requirements['update_core']['title'] = t('Drupal core update status');
      $requirements['update_core']['value'] = t('No update data available');
      $requirements['update_core']['severity'] = REQUIREMENT_WARNING;
      $requirements['update_core']['reason'] = UPDATE_UNKNOWN;
      $requirements['update_core']['description'] = _update_no_data();
    }
  }
  return $requirements;
}

/**
 * Implements hook_install().
 */
function update_install() {
  $queue = \Drupal::queue('update_fetch_tasks', TRUE);
  $queue->createQueue();
}

/**
 * Implements hook_uninstall().
 */
function update_uninstall() {
  \Drupal::state()->delete('update.last_check');
  \Drupal::state()->delete('update.last_email_notification');

  $queue = \Drupal::queue('update_fetch_tasks');
  $queue->deleteQueue();
}

/**
 * Fills in the requirements array.
 *
 * This is shared for both core and contrib to generate the right elements in
 * the array for hook_requirements().
 *
 * @param $project
 *   Array of information about the project we're testing as returned by
 *   update_calculate_project_data().
 * @param $type
 *   What kind of project this is ('core' or 'contrib').
 *
 * @return
 *   An array to be included in the nested $requirements array.
 *
 * @see hook_requirements()
 * @see update_requirements()
 * @see update_calculate_project_data()
 */
function _update_requirement_check($project, $type) {
  $requirement = [];
  if ($type == 'core') {
    $requirement['title'] = t('Drupal core update status');
  }
  else {
    $requirement['title'] = t('Module and theme update status');
  }
  $status = $project['status'];
  if ($status != UPDATE_CURRENT) {
    $requirement['reason'] = $status;
    $requirement['severity'] = REQUIREMENT_ERROR;
    // When updates are available, append the available updates link to the
    // message from _update_message_text(), and format the two translated
    // strings together in a single paragraph.
    $requirement['description'][] = ['#markup' => _update_message_text($type, $status)];
    if (!in_array($status, [UPDATE_UNKNOWN, UPDATE_NOT_CHECKED, UPDATE_NOT_FETCHED, UPDATE_FETCH_PENDING])) {
      if (_update_manager_access()) {
        $requirement['description'][] = ['#prefix' => ' ', '#markup' => t('See the <a href=":available_updates">available updates</a> page for more information and to install your missing updates.', [':available_updates' => \Drupal::url('update.report_update')])];
      }
      else {
        $requirement['description'][] = ['#prefix' => ' ', '#markup' => t('See the <a href=":available_updates">available updates</a> page for more information.', [':available_updates' => \Drupal::url('update.status')])];
      }
    }
  }
  switch ($status) {
    case UPDATE_NOT_SECURE:
      $requirement_label = t('Not secure!');
      break;
    case UPDATE_REVOKED:
      $requirement_label = t('Revoked!');
      break;
    case UPDATE_NOT_SUPPORTED:
      $requirement_label = t('Unsupported release');
      break;
    case UPDATE_NOT_CURRENT:
      $requirement_label = t('Out of date');
      $requirement['severity'] = REQUIREMENT_WARNING;
      break;
    case UPDATE_UNKNOWN:
    case UPDATE_NOT_CHECKED:
    case UPDATE_NOT_FETCHED:
    case UPDATE_FETCH_PENDING:
      $requirement_label = isset($project['reason']) ? $project['reason'] : t('Can not determine status');
      $requirement['severity'] = REQUIREMENT_WARNING;
      break;
    default:
      $requirement_label = t('Up to date');
  }
  if ($status != UPDATE_CURRENT && $type == 'core' && isset($project['recommended'])) {
    $requirement_label .= ' ' . t('(version @version available)', ['@version' => $project['recommended']]);
  }
  $requirement['value'] = \Drupal::l($requirement_label, new Url(_update_manager_access() ? 'update.report_update' : 'update.status'));
  return $requirement;
}

/**
 * Rebuild the router to ensure admin/reports/updates/check has CSRF protection.
 */
function update_update_8001() {
  // Empty update forces a call to drupal_flush_all_caches() which rebuilds the
  // router.
}