<?php

declare(strict_types=1);

/*
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Chill\MainBundle\Security\Authorization;

use Chill\MainBundle\Entity\Notification;
use Chill\MainBundle\Entity\NotificationComment;
use Chill\MainBundle\Entity\User;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Authorization\Voter\Voter;
use UnexpectedValueException;

final class NotificationVoter extends Voter
{
    /**
     * Allow to add a comment on a notification.
     *
     * May apply on both @see{NotificationComment::class} and @see{Notification::class}.
     */
    public const COMMENT_ADD = 'CHILL_MAIN_NOTIFICATION_COMMENT_ADD';

    public const COMMENT_EDIT = 'CHILL_MAIN_NOTIFICATION_COMMENT_EDIT';

    public const NOTIFICATION_SEE = 'CHILL_MAIN_NOTIFICATION_SEE';

    public const NOTIFICATION_TOGGLE_READ_STATUS = 'CHILL_MAIIN_NOTIFICATION_TOGGLE_READ_STATUS';

    public const NOTIFICATION_UPDATE = 'CHILL_MAIN_NOTIFICATION_UPDATE';

    protected function supports($attribute, $subject): bool
    {
        return $subject instanceof Notification || $subject instanceof NotificationComment;
    }

    /**
     * @param string $attribute
     * @param mixed $subject
     */
    protected function voteOnAttribute($attribute, $subject, TokenInterface $token): bool
    {
        $user = $token->getUser();

        if (!$user instanceof User) {
            return false;
        }

        if ($subject instanceof Notification) {
            switch ($attribute) {
                case self::COMMENT_ADD:
                    return false === $subject->isSystem() && (
                        $subject->getAddressees()->contains($user) || $subject->getSender() === $user
                    );

                case self::NOTIFICATION_SEE:
                case self::NOTIFICATION_TOGGLE_READ_STATUS:
                    return $subject->getSender() === $user || $subject->getAddressees()->contains($user);

                case self::NOTIFICATION_UPDATE:
                    return $subject->getSender() === $user && false === $subject->isSystem();

                default:
                    throw new UnexpectedValueException("this subject {$attribute} is not implemented");
            }
        } elseif ($subject instanceof NotificationComment) {
            switch ($attribute) {
                case self::COMMENT_ADD:
                    return false === $subject->getNotification()->isSystem() && (
                        $subject->getNotification()->getAddressees()->contains($user) || $subject->getNotification()->getSender() === $user
                    );

                case self::COMMENT_EDIT:
                    return $subject->getCreatedBy() === $user && false === $subject->getNotification()->isSystem();

                default:
                    throw new UnexpectedValueException("this subject {$attribute} is not implemented");
            }
        }

        throw new UnexpectedValueException();
    }
}