<?php

use Drupal\Core\Datetime\DrupalDateTime;
use Drupal\Core\Render\Element;
use Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface;
use Drupal\language\ConfigurableLanguageInterface;
use Drupal\user\UserInterface;
use Drupal\Core\Entity\Query\QueryInterface;

/**
 * Implements hook_locale_translation_projects_alter().
 */
function announcement_locale_translation_projects_alter(&$projects) {
  $module_handler = \Drupal::service('module_handler');
  $path = $module_handler->getModule('announcement')->getPath();
  $projects['announcement']['info']['interface translation server pattern'] = $path . '/translations/%language.po';
}

/**
 * Implements hook_theme().
 */
function announcement_theme($existing, $type, $theme, $path) {
  return [
    'announcement' => [
      'render element' => 'elements',
    ],
  ];
}

/**
 * Prepares variables for announcement templates.
 *
 * Default template: announcement.html.twig.
 *
 * Most themes use their own copy of announcement.html.twig. The default is located
 * inside "/core/modules/announcement/templates/announcement.html.twig". Look in there for the
 * full list of variables.
 *
 * @param array $variables
 *   An associative array containing:
 *   - elements: An array of elements to display in view mode.
 *   - announcement: The announcement object.
 *
 * @see \Drupal\Core\Field\BaseFieldDefinition::setDisplayConfigurable()
 */
function template_preprocess_announcement(&$variables) {
  $variables['announcement'] = $variables['elements']['#announcement'];
  /** @var \Drupal\announcement\AnnouncementInterface $announcement */
  $announcement = $variables['announcement'];

  $variables['date'] = \Drupal::service('renderer')->render($variables['elements']['created']);
  unset($variables['elements']['created']);
  unset($variables['elements']['publish_time']);
  unset($variables['elements']['unpublish_time']);
  $variables['author_name'] = \Drupal::service('renderer')->render($variables['elements']['uid']);
  unset($variables['elements']['uid']);

  if (isset($variables['elements']['title']) && (!$announcement->getFieldDefinition('title')->isDisplayConfigurable('view'))) {
    $variables['label'] = $variables['elements']['title'];
    unset($variables['elements']['title']);
  }

  // Helpful $content variable for templates.
  $variables += ['content' => []];
  foreach (Element::children($variables['elements']) as $key) {
    $variables['content'][$key] = $variables['elements'][$key];
  }
}

/**
 * Implements hook_ENTITY_TYPE_delete() for 'configurable_language'.
 */
function announcement_configurable_language_delete(ConfigurableLanguageInterface $language) {
  // On announcements with this language, unset the language.
  \Drupal::entityTypeManager()->getStorage('announcement')->clearRevisionsLanguage($language);
}

/**
 * Implements hook_cron().
 */
function announcement_cron() {
  $storage = \Drupal::entityTypeManager()->getStorage('announcement');

  $timezone = date_default_timezone_get();
  $now = new \DateTime('now', new \DateTimeZone($timezone));
  $now->setTimezone(new \DateTimeZone(DateTimeItemInterface::STORAGE_TIMEZONE));
  $now = DrupalDateTime::createFromDateTime($now);

  // Publish all announcements when scheduled
  $query = $storage->getQuery();
  $query->accessCheck(FALSE);
  $query
    ->condition('publish_time', $now->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT), '<');
  $ids = $query->execute();

  $entities = $storage->loadMultiple($ids);
  /** @var \Drupal\announcement\AnnouncementInterface $entity */
  foreach ($entities as $entity) {
    $entity->setPublished();
    $entity->set('publish_time', NULL);
    $entity->save();
  }

  // Unpublish all announcements when scheduled
  $query = $storage->getQuery();
  $query->accessCheck(FALSE);
  $query
    ->condition('status', 1)
    ->condition('unpublish_time', $now->format(DateTimeItemInterface::DATETIME_STORAGE_FORMAT), '<');
  $ids = $query->execute();

  $entities = $storage->loadMultiple($ids);
  /** @var \Drupal\announcement\AnnouncementInterface $entity */
  foreach ($entities as $entity) {
    $config = \Drupal::config('announcement.settings');
    if ($config->get('delete_when_deactivated')) {
      $entity->delete();
    } else {
      $entity->setUnpublished();
      $entity->set('unpublish_time', NULL);
      $entity->save();
    }
  }
}