<?php

namespace Drupal\taxonomy;

use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
use Drupal\Core\Entity\BundlePermissionHandlerTrait;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\taxonomy\Entity\Vocabulary;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Provides dynamic permissions of the taxonomy module.
 *
 * @see taxonomy.permissions.yml
 */
class TaxonomyPermissions implements ContainerInjectionInterface {
  use BundlePermissionHandlerTrait;
  use StringTranslationTrait;

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
   */
  protected $entityTypeManager;

  /**
   * Constructs a TaxonomyPermissions instance.
   *
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   */
  public function __construct(EntityTypeManagerInterface $entity_type_manager) {
    $this->entityTypeManager = $entity_type_manager;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container->get('entity_type.manager'));
  }

  /**
   * Get taxonomy permissions.
   *
   * @return array
   *   Permissions array.
   */
  public function permissions() {
    return $this->generatePermissions(Vocabulary::loadMultiple(), [$this, 'buildPermissions']);
  }

  /**
   * Builds a standard list of taxonomy term permissions for a given vocabulary.
   *
   * @param \Drupal\taxonomy\VocabularyInterface $vocabulary
   *   The vocabulary.
   *
   * @return array
   *   An array of permission names and descriptions.
   */
  protected function buildPermissions(VocabularyInterface $vocabulary) {
    $id = $vocabulary->id();
    $args = ['%vocabulary' => $vocabulary->label()];

    return [
      "create terms in $id" => ['title' => $this->t('%vocabulary: Create terms', $args)],
      "delete terms in $id" => ['title' => $this->t('%vocabulary: Delete terms', $args)],
      "edit terms in $id" => ['title' => $this->t('%vocabulary: Edit terms', $args)],
      "view term revisions in $id" => ['title' => $this->t('%vocabulary: View term revisions', $args)],
      "revert term revisions in $id" => [
        'title' => $this->t('%vocabulary: Revert term revisions', $args),
        'description' => $this->t('To revert a revision you also need permission to edit the taxonomy term.'),
      ],
      "delete term revisions in $id" => [
        'title' => $this->t('%vocabulary: Delete term revisions', $args),
        'description' => $this->t('To delete a revision you also need permission to delete the taxonomy term.'),
      ],
    ];
  }

}