<?php

/**
 * @file
 * Contains hook implementations for Automatic Updates.
 */

use Drupal\automatic_updates\BatchProcessor;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\automatic_updates\Validation\AdminReadinessMessages;
use Drupal\Core\Url;
use Drupal\system\Controller\DbUpdateController;
use Drupal\package_manager\Validator\ComposerExecutableValidator;

/**
 * Implements hook_help().
 */
function automatic_updates_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.automatic_updates':
      $output = '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Automatic Updates lets you update Drupal core.') . '</p>';
      $output .= '<p>';
      $output .= t('Automatic Updates will keep Drupal secure and up-to-date by automatically installing new patch-level updates, if available, when cron runs. It also provides a user interface to check if any updates are available and install them. You can <a href=":configure-form">configure Automatic Updates</a> to install all patch-level updates, only security updates, or no updates at all, during cron. By default, only security updates are installed during cron; this requires that you <a href=":update-form">install non-security updates through the user interface</a>.', [
        ':configure-form' => Url::fromRoute('update.settings')->toString(),
        ':update-form' => Url::fromRoute('update.report_update')->toString(),
      ]);
      $output .= '</p>';
      $output .= '<p>' . t('Additionally, Automatic Updates periodically runs checks to ensure that updates can be installed, and will warn site administrators if problems are detected.') . '</p>';
      $output .= '<h3>' . t('Requirements') . '</h3>';
      $output .= '<p>' . t('Automatic Updates requires a Composer executable whose version satisfies <code>@version</code>, and PHP must have permission to run it. The path to the executable may be set in the <code>package_manager.settings:executables.composer</code> config setting, or it will be automatically detected.', ['@version' => ComposerExecutableValidator::MINIMUM_COMPOSER_VERSION_CONSTRAINT]) . '</p>';
      $output .= '<p>' . t('For more information, see the <a href=":automatic-updates-documentation">online documentation for the Automatic Updates module</a>.', [':automatic-updates-documentation' => 'https://www.drupal.org/docs/8/update/automatic-updates']) . '</p>';
      $output .= '<p id="cron-alternate-port">' . t('If your site is running on the built-in PHP web server, unattended (i.e., cron) updates may not work without one of the following workarounds:') . '</p>';
      $output .= '<ul>';
      $output .= '<li>' . t('Use a multithreaded web server, such as Apache, NGINX, or on Windows, IIS.') . '</li>';
      $output .= '<li>' . t('Run another instance of the built-in PHP web server on a different port and configure automatic updates accordingly: <code>$config["automatic_updates.settings"]["cron_port"] = $alternate_port_number;</code>') . '</li>';
      $output .= '</ul>';
      return $output;
  }
}

/**
 * Implements hook_mail().
 */
function automatic_updates_mail(string $key, array &$message, array $params): void {
  // Explicitly pass the language code to all translated strings.
  $options = [
    'langcode' => $message['langcode'],
  ];
  switch ($key) {
    case 'cron_successful':
      $message['subject'] = t("Drupal core was successfully updated", [], $options);
      $message['body'][] = t('Congratulations!', [], $options);
      $message['body'][] = t('Drupal core was automatically updated from @previous_version to @updated_version.', [
        '@previous_version' => $params['previous_version'],
        '@updated_version' => $params['updated_version'],
      ], $options);
      break;

    case 'cron_failed':
      $message['subject'] = t("Drupal core update failed", [], $options);
      $message['body'][] = t('Drupal core failed to update automatically from @previous_version to @target_version. The following error was logged:', [
        '@previous_version' => $params['previous_version'],
        '@target_version' => $params['target_version'],
      ], $options);
      $message['body'][] = $params['error_message'];
      break;
  }

  // If this email was related to an unattended update, explicitly state that
  // this isn't supported yet.
  if (str_starts_with($key, 'cron_')) {
    $message['body'][] = t('This e-mail was sent by the Automatic Updates module. Unattended updates are not yet fully supported.', [], $options);
    $message['body'][] = t('If you are using this feature in production, it is strongly recommended for you to visit your site and ensure that everything still looks good.', [], $options);
  }
}

/**
 * Implements hook_page_top().
 */
function automatic_updates_page_top() {
  /** @var \Drupal\automatic_updates\Validation\AdminReadinessMessages $readiness_messages */
  $readiness_messages = \Drupal::classResolver(AdminReadinessMessages::class);
  $readiness_messages->displayAdminPageMessages();

  // @todo Rely on the route option after https://www.drupal.org/i/3236497 is
  //   committed.
  // @todo Remove 'system.batch_page.html' after
  //   https://www.drupal.org/i/3238311 is committed.
  $skip_routes = [
    'system.batch_page.html',
    'automatic_updates.confirmation_page',
    'automatic_updates.report_update',
    'automatic_updates.module_update',
  ];
  // @see auto_updates_module_implements_alter()
  $route_name = \Drupal::routeMatch()->getRouteName();
  if (!in_array($route_name, $skip_routes, TRUE) && function_exists('update_page_top')) {
    update_page_top();
  }
}

/**
 * Implements hook_module_implements_alter().
 *
 * @todo Remove after https://www.drupal.org/i/3236497 is committed.
 */
function automatic_updates_module_implements_alter(&$implementations, $hook) {
  if ($hook === 'page_top') {
    // Remove hook_page_top() implementation from the Update module. This '
    // implementation displays error messages about security releases. We call
    // this implementation in our own automatic_updates_page_top() except on our
    // own routes to avoid these messages while an update is in progress.
    unset($implementations['update']);
  }
  if ($hook === 'cron') {
    // Whatever mofo.
    $hook = $implementations['automatic_updates'];
    unset($implementations['automatic_updates']);
    $implementations['automatic_updates'] = $hook;
  }
}

/**
 * Implements hook_cron().
 */
function automatic_updates_cron() {
  \Drupal::service('automatic_updates.cron_updater')->handleCron();

  /** @var \Drupal\automatic_updates\Validation\ReadinessValidationManager $checker_manager */
  $checker_manager = \Drupal::service('automatic_updates.readiness_validation_manager');
  $last_results = $checker_manager->getResults();
  $last_run_time = $checker_manager->getLastRunTime();
  // Do not run readiness checks more than once an hour unless there are no
  // results available.
  if ($last_results === NULL || !$last_run_time || \Drupal::time()->getRequestTime() - $last_run_time > 3600) {
    $checker_manager->run();
  }

}

/**
 * Implements hook_modules_installed().
 */
function automatic_updates_modules_installed() {
  // Run the readiness checkers if needed when any modules are installed in
  // case they provide readiness checker services.
  /** @var \Drupal\automatic_updates\Validation\ReadinessValidationManager $checker_manager */
  $checker_manager = \Drupal::service('automatic_updates.readiness_validation_manager');
  $checker_manager->run();
}

/**
 * Implements hook_modules_uninstalled().
 */
function automatic_updates_modules_uninstalled() {
  // Run the readiness checkers if needed when any modules are uninstalled in
  // case they provided readiness checker services.
  /** @var \Drupal\automatic_updates\Validation\ReadinessValidationManager $checker_manager */
  $checker_manager = \Drupal::service('automatic_updates.readiness_validation_manager');
  $checker_manager->run();
}

/**
 * Implements hook_batch_alter().
 *
 * @todo Remove this in https://www.drupal.org/i/3267817.
 */
function automatic_updates_batch_alter(array &$batch): void {
  foreach ($batch['sets'] as &$batch_set) {
    if (!empty($batch_set['finished']) && $batch_set['finished'] === [DbUpdateController::class, 'batchFinished']) {
      $batch_set['finished'] = [BatchProcessor::class, 'dbUpdateBatchFinished'];
    }
  }
}

/**
 * Implements hook_preprocess_update_project_status().
 */
function automatic_updates_preprocess_update_project_status(array &$variables) {
  $project = &$variables['project'];
  if ($project['name'] !== 'drupal') {
    return;
  }
  $updater = \Drupal::service('automatic_updates.updater');
  $supported_target_versions = [];
  /** @var \Drupal\automatic_updates\ReleaseChooser $recommender */
  $recommender = \Drupal::service('automatic_updates.release_chooser');
  try {
    if ($installed_minor_release = $recommender->getLatestInInstalledMinor($updater)) {
      $supported_target_versions[] = $installed_minor_release->getVersion();
    }
    if ($next_minor_release = $recommender->getLatestInNextMinor($updater)) {
      $supported_target_versions[] = $next_minor_release->getVersion();
    }
  }
  catch (RuntimeException $exception) {
    // If for some reason we are not able to get the update recommendations
    // do not alter the report.
    watchdog_exception('automatic_updates', $exception);
    return;
  }
  $variables['#attached']['library'][] = 'automatic_updates/update_status';

  $status = &$variables['status'];
  if ($supported_target_versions && $status['label']) {
    $status['label'] = [
      '#markup' => t(
        '@label <a href=":update-form">Update now</a>', [
          '@label' => $status['label'],
          ':update-form' => Url::fromRoute('update.report_update')->toString(),
        ]),
    ];
  }
  // BEGIN: DELETE FROM CORE MERGE REQUEST
  if (empty($variables['versions'])) {
    return;
  }
  foreach ($variables['versions'] as &$themed_version) {
    $version_info = &$themed_version['#version'];
    if ($supported_target_versions && in_array($version_info['version'], $supported_target_versions, TRUE)) {
      $version_info['download_link'] = Url::fromRoute('update.report_update')->setAbsolute()->toString();
    }
    else {
      // If this version will not be displayed as an option on this module's
      // update form replace the link to download the archive file with the
      // release notes link. The release notes page will provide Composer
      // instructions. While this isn't a perfect solution the Update module twig
      // templates do not check if 'download_link' is set, so we cannot unset it
      // here.
      $themed_version['#attributes']['class'][] = 'automatic-updates-unsupported-version';
      $version_info['download_link'] = $version_info['release_link'];
    }
  }
  // END: DELETE FROM CORE MERGE REQUEST
}