<?php

namespace Drupal\custom_forms\Routing;

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\Routing\AdminHtmlRouteProvider;
use Symfony\Component\Routing\Route;

/**
 * Class CustomFormHtmlRouteProvider
 *
 * Adds additional routes for custom forms.
 *
 * @package Drupal\custom_forms\Routing
 */
class CustomFormHtmlRouteProvider extends AdminHtmlRouteProvider {

  /**
   * {@inheritdoc}
   */
  public function getRoutes(EntityTypeInterface $entity_type) {
    $collection = parent::getRoutes($entity_type);
    $entity_type_id = $entity_type->id();

    $route = (new Route('/admin/custom_forms/{custom_form}'))
      ->addDefaults([
        '_controller' => '\Drupal\custom_forms\Controller\CustomFormViewController::view',
        '_title_callback' => '\Drupal\custom_forms\Controller\CustomFormViewController::title',
      ])
      ->setRequirement('custom_form', '\d+')
      ->setRequirement('_entity_access', 'custom_form.admin_view')
      ->setOptions([
        'parameters' => [
          'custom_form' => ['type' => 'entity:custom_form'],
        ],
        '_admin_route' => TRUE
      ]);
    $collection->add('entity.custom_form.canonical', $route);

    $route = (new Route('/admin/custom_forms/{custom_form}/delete'))
      ->addDefaults([
        '_entity_form' => 'custom_form.delete',
        '_title' => 'Delete',
      ])
      ->setRequirement('custom_form', '\d+')
      ->setRequirement('_entity_access', 'custom_form.delete')
      ->setOptions([
        'parameters' => [
          'custom_form' => ['type' => 'entity:custom_form'],
        ],
        '_admin_route' => TRUE
      ]);
    $collection->add('entity.custom_form.delete_form', $route);

    $route = (new Route('/admin/custom_forms/{custom_form}/settings'))
      ->setDefaults([
        '_entity_form' => 'custom_form.edit',
        '_title' => 'Edit custom form',
        '_title_callback' => '\Drupal\custom_forms\Controller\CustomFormController::settingsTitle'
      ])
      ->setRequirement('_entity_access', 'custom_form.update')
      ->setRequirement('custom_form', '\d+')
      ->setOptions([
        'parameters' => [
          'custom_form' => ['type' => 'entity:custom_form'],
        ],
        '_admin_route' => TRUE
      ]);
    $collection->add('entity.custom_form.edit_form', $route);

    if ($fields_route = $this->getFieldsRoute($entity_type)) {
      $collection->add("entity.{$entity_type_id}.fields_form", $fields_route);
    }

    if ($fields_route = $this->getPaymentMethodsRoute($entity_type)) {
      $collection->add("entity.{$entity_type_id}.payment_methods_form", $fields_route);
    }

    if ($fields_route = $this->getMailRoute($entity_type)) {
      $collection->add("entity.{$entity_type_id}.mail_form", $fields_route);
    }

    return $collection;
  }

  /**
   * {@inheritdoc}
   */
  protected function getCanonicalRoute(EntityTypeInterface $entity_type) {
    if ($route = parent::getCanonicalRoute($entity_type)) {
      $route->setOption('_admin_route', TRUE);
      return $route;
    }
  }

  /**
   * Gets the fields route.
   *
   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
   *   The entity type.
   *
   * @return \Symfony\Component\Routing\Route|null
   *   The generated route, if available.
   */
  protected function getFieldsRoute(EntityTypeInterface $entity_type) {
    if ($entity_type->hasLinkTemplate('fields-form')) {
      $entity_type_id = $entity_type->id();
      $route = new Route($entity_type->getLinkTemplate('fields-form'));
      $route
        ->setDefaults([
          '_entity_form' => "{$entity_type_id}.fields",
          '_title_callback' => '\Drupal\custom_forms\Controller\CustomFormController::fieldsTitle',
        ])
        ->setRequirement('_entity_access', "{$entity_type_id}.update")
        ->setOption('parameters', [
          $entity_type_id => ['type' => 'entity:' . $entity_type_id],
        ]);

      // Entity types with serial IDs can specify this in their route
      // requirements, improving the matching process.
      if ($this->getEntityTypeIdKeyType($entity_type) === 'integer') {
        $route->setRequirement($entity_type_id, '\d+');
      }
      return $route;
    }
  }

  /**
   * Gets the payment methods route.
   *
   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
   *   The entity type.
   *
   * @return \Symfony\Component\Routing\Route|null
   *   The generated route, if available.
   */
  protected function getPaymentMethodsRoute(EntityTypeInterface $entity_type) {
    if ($entity_type->hasLinkTemplate('payment-methods-form')) {
      $entity_type_id = $entity_type->id();
      $route = new Route($entity_type->getLinkTemplate('payment-methods-form'));
      $route
        ->setDefaults([
          '_entity_form' => "{$entity_type_id}.payment_methods",
          '_title_callback' => '\Drupal\custom_forms\Controller\CustomFormController::paymentMethodsTitle',
        ])
        ->setRequirement('_entity_access', "{$entity_type_id}.payment_methods")
        ->setOption('parameters', [
          $entity_type_id => ['type' => 'entity:' . $entity_type_id],
        ]);

      // Entity types with serial IDs can specify this in their route
      // requirements, improving the matching process.
      if ($this->getEntityTypeIdKeyType($entity_type) === 'integer') {
        $route->setRequirement($entity_type_id, '\d+');
      }
      return $route;
    }
  }

  /**
   * Gets the mail route.
   *
   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
   *   The entity type.
   *
   * @return \Symfony\Component\Routing\Route|null
   *   The generated route, if available.
   */
  protected function getMailRoute(EntityTypeInterface $entity_type) {
    if ($entity_type->hasLinkTemplate('mail-form')) {
      $entity_type_id = $entity_type->id();
      $route = new Route($entity_type->getLinkTemplate('mail-form'));
      $route
        ->setDefaults([
          '_entity_form' => "{$entity_type_id}.mail",
          '_title_callback' => '\Drupal\custom_forms\Controller\CustomFormController::mailTitle',
        ])
        ->setRequirement('_entity_access', "{$entity_type_id}.mail")
        ->setOption('parameters', [
          $entity_type_id => ['type' => 'entity:' . $entity_type_id],
        ]);

      // Entity types with serial IDs can specify this in their route
      // requirements, improving the matching process.
      if ($this->getEntityTypeIdKeyType($entity_type) === 'integer') {
        $route->setRequirement($entity_type_id, '\d+');
      }
      return $route;
    }
  }

}