contacts_events-8.x-1.x-dev/modules/teams/src/Guard/TeamWorkflowGuard.php

<?php

namespace Drupal\contacts_events_teams\Guard;

use Drupal\commerce_order\Entity\OrderItem;
use Drupal\contacts_events_teams\TeamQueries;
use Drupal\Core\Entity\EntityInterface;
use Drupal\state_machine\Guard\GuardInterface;
use Drupal\state_machine\Plugin\Workflow\WorkflowInterface;
use Drupal\state_machine\Plugin\Workflow\WorkflowTransition;

/**
 * Workflow guard for the booking transitions for team tickets.
 */
class TeamWorkflowGuard implements GuardInterface {

  /**
   * The team query service.
   *
   * @var \Drupal\contacts_events_teams\TeamQueries
   */
  protected $queries;

  /**
   * Construct the team workflow guard.
   *
   * @param \Drupal\contacts_events_teams\TeamQueries $queries
   *   The team query service.
   */
  public function __construct(TeamQueries $queries) {
    $this->queries = $queries;
  }

  /**
   * {@inheritdoc}
   */
  public function allowed(WorkflowTransition $transition, WorkflowInterface $workflow, EntityInterface $entity) {
    if ($workflow->getId() == 'contacts_events_order_item_process' && $entity->bundle() == 'contacts_ticket') {
      $transition_id = $transition->getId();

      // If we are returning back to pending, we dont need any additional
      // checks. Also the team ticket might already have been reset at this
      // point so additional checks may fail.
      // @see \Drupal\contacts_events_teams\Form\TicketFormAlter::submitSetupTeamApplication
      if ($transition_id == 'team_app_back_to_pending') {
        return NULL;
      }

      /** @var \Drupal\commerce_order\Entity\OrderItem $entity */
      $is_team_ticket = $this->isTeamTicket($entity);

      // If this is not a team ticket ignore unless it is a team transition.
      if (!$is_team_ticket) {
        return substr($transition_id, 0, 5) == 'team_' ? FALSE : NULL;
      }

      // Team tickets should never be confirmed.
      if ($transition->getToState()->getId() == 'confirmed') {
        return FALSE;
      }

      // Make sure we use the team_payment_undone transition rather than the
      // payment_undone transition.
      /* @see \Drupal\contacts_events\Entity\PaymentHooks::postSave() */
      if ($transition_id == 'payment_undone') {
        return FALSE;
      }

      // Allow all other transitions to happen normally, except for transitions
      // to paid_in_full.
      if ($transition->getToState()->getId() != 'paid_in_full') {
        return NULL;
      }

      /** @var \Drupal\contacts_events\Entity\TicketInterface $ticket */
      $ticket = $entity->getPurchasedEntity();
      $app = $this->queries->getTeamApplicationForTicket($ticket);

      // Only allow progressing to paid in full if the application has been
      // approved.
      return $app && $app->state->value == 'approved';
    }

    // Otherwise we don't want to influence the outcome.
    return NULL;
  }

  /**
   * Checks if a ticket is a team ticket.
   *
   * @param \Drupal\commerce_order\Entity\OrderItem $entity
   *   The Order Item.
   *
   * @return bool
   *   Whether the order item is for a team ticket.
   */
  protected function isTeamTicket(OrderItem $entity) {
    if ($entity->bundle() === 'contacts_ticket') {
      /** @var \Drupal\contacts_events\Entity\Ticket $ticket */
      return $entity->getPurchasedEntity()->is_team_ticket->value;
    }
    return FALSE;
  }

}