<?php

/**
 * @file
 * Blog pessoal por usuário.
 */

use Drupal\Core\Access\AccessResult;
use Drupal\Core\Access\AccessResultInterface;
use Drupal\Core\Session\AccountInterface;
use Drupal\node\NodeInterface;
use Drupal\user\UserInterface;

/**
 * Implements hook_node_presave().
 *
 * Preenche field_site_section com o autor do post para que o bloco de
 * navegação do structural_pages encontre o usuário ancestral corretamente.
 */
function site_users_blog_node_presave(NodeInterface $node): void {
  if ($node->bundle() !== 'blog_post') {
    return;
  }
  if (!$node->hasField('field_site_section') || !$node->get('field_site_section')->isEmpty()) {
    return;
  }
  $node->set('field_site_section', [
    'target_type' => 'user',
    'target_id'   => $node->getOwnerId(),
  ]);
}

/**
 * Implements hook_node_access().
 *
 * Restringe a criação de blog_post às roles configuradas pelo administrador.
 * Se nenhuma role estiver configurada, qualquer usuário autenticado pode criar.
 */
function site_users_blog_node_access(NodeInterface $node, string $op, AccountInterface $account): AccessResultInterface {
  if ($node->bundle() !== 'blog_post' || $op !== 'create') {
    return AccessResult::neutral();
  }

  $allowed = \Drupal::config('site_users_blog.settings')->get('allowed_roles') ?? [];
  $allowed = array_filter($allowed);

  $result = AccessResult::neutral()
    ->addCacheTags(['config:site_users_blog.settings'])
    ->cachePerUser();

  if (empty($allowed)) {
    return $result;
  }

  foreach (array_keys($allowed) as $role) {
    if ($account->hasRole($role)) {
      return $result;
    }
  }

  return AccessResult::forbidden()
    ->addCacheTags(['config:site_users_blog.settings'])
    ->cachePerUser();
}

/**
 * Implements hook_preprocess_structural_pages_menu().
 *
 * Adiciona o item "Blog" ao menu do microsite quando o usuário tem pelo menos
 * um post publicado.
 */
function site_users_blog_preprocess_structural_pages_menu(array &$variables): void {
  $user = site_users_get_microsite_user();
  if ($user === NULL) {
    return;
  }

  $nids = \Drupal::entityTypeManager()->getStorage('node')
    ->getQuery()
    ->condition('uid', $user->id())
    ->condition('type', 'blog_post')
    ->condition('status', 1)
    ->accessCheck(FALSE)
    ->range(0, 1)
    ->execute();

  if (empty($nids)) {
    return;
  }

  $url = \Drupal\Core\Url::fromRoute('view.user_blog.page_user_blog', [
    'arg_0' => $user->id(),
  ])->toString();

  $variables['tree'][] = [
    'id'          => 0,
    'title'       => t('Blog'),
    'url'         => $url,
    'is_redirect' => FALSE,
    'children'    => [],
  ];
}