<?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\ActivityBundle\Security\Authorization;

use Chill\ActivityBundle\Entity\Activity;
use Chill\MainBundle\Entity\User;
use Chill\MainBundle\Security\Authorization\AbstractChillVoter;
use Chill\MainBundle\Security\Authorization\VoterHelperFactoryInterface;
use Chill\MainBundle\Security\Authorization\VoterHelperInterface;
use Chill\MainBundle\Security\ProvideRoleHierarchyInterface;
use Chill\PersonBundle\Entity\AccompanyingPeriod;
use Chill\PersonBundle\Entity\Person;
use Chill\PersonBundle\Security\Authorization\AccompanyingPeriodVoter;
use Chill\PersonBundle\Security\Authorization\PersonVoter;
use RuntimeException;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Security;

use function in_array;

class ActivityVoter extends AbstractChillVoter implements ProvideRoleHierarchyInterface
{
    /**
     * allow to create an activity, which will either be associated to an
     * accompanying course or person.
     *
     * It is safe for usage in template and controller
     */
    public const CREATE = 'CHILL_ACTIVITY_CREATE';

    /**
     * role to allow to create an activity associated win an accompanying course.
     *
     * Before using this, check if @see{self::CREATE} is not sufficiant
     *
     * @internal
     */
    public const CREATE_ACCOMPANYING_COURSE = 'CHILL_ACTIVITY_CREATE_ACCOMPANYING_COURSE';

    /**
     * role to allow to create an activity associated with a person.
     *
     * Before using this, check if @see{self::CREATE} is not sufficiant
     *
     * @internal
     */
    public const CREATE_PERSON = 'CHILL_ACTIVITY_CREATE_PERSON';

    public const DELETE = 'CHILL_ACTIVITY_DELETE';

    public const FULL = 'CHILL_ACTIVITY_FULL';

    public const SEE = 'CHILL_ACTIVITY_SEE';

    public const SEE_DETAILS = 'CHILL_ACTIVITY_SEE_DETAILS';

    public const UPDATE = 'CHILL_ACTIVITY_UPDATE';

    private const ALL = [
        self::CREATE,
        self::SEE,
        self::UPDATE,
        self::DELETE,
        self::SEE_DETAILS,
        self::FULL,
    ];

    protected Security $security;

    protected VoterHelperInterface $voterHelper;

    public function __construct(
        Security $security,
        VoterHelperFactoryInterface $voterHelperFactory
    ) {
        $this->security = $security;
        $this->voterHelper = $voterHelperFactory->generate(self::class)
            ->addCheckFor(Person::class, [self::SEE, self::CREATE])
            ->addCheckFor(AccompanyingPeriod::class, [self::SEE, self::CREATE])
            ->addCheckFor(Activity::class, self::ALL)
            ->build();
    }

    public function getRoles(): array
    {
        return [
            self::SEE,
            self::SEE_DETAILS,
            self::CREATE_PERSON,
            self::CREATE_ACCOMPANYING_COURSE,
            self::UPDATE,
            self::DELETE,
            self::FULL,
        ];
    }

    public function getRolesWithHierarchy(): array
    {
        return ['Activity' => $this->getRoles()];
    }

    public function getRolesWithoutScope(): array
    {
        return [];
    }

    protected function supports($attribute, $subject): bool
    {
        return $this->voterHelper->supports($attribute, $subject);
    }

    protected function voteOnAttribute($attribute, $subject, TokenInterface $token): bool
    {
        if (!$token->getUser() instanceof User) {
            return false;
        }

        if ($subject instanceof Activity) {
            if ($subject->getPerson() instanceof Person) {
                // the context is person: we must have the right to see the person
                if (!$this->security->isGranted(PersonVoter::SEE, $subject->getPerson())) {
                    return false;
                }

                // change attribute CREATE
                if (self::CREATE === $attribute) {
                    return $this->voterHelper->voteOnAttribute(self::CREATE_PERSON, $subject->getPerson(), $token);
                }
            } elseif ($subject->getAccompanyingPeriod() instanceof AccompanyingPeriod) {
                if (!$this->security->isGranted(AccompanyingPeriodVoter::SEE, $subject->getAccompanyingPeriod())) {
                    return false;
                }

                if (self::CREATE === $attribute) {
                    if (AccompanyingPeriod::STEP_CLOSED === $subject->getAccompanyingPeriod()->getStep()) {
                        return false;
                    }

                    return $this->voterHelper->voteOnAttribute(self::CREATE_ACCOMPANYING_COURSE, $subject->getAccompanyingPeriod(), $token);
                }
            } else {
                throw new RuntimeException('Could not determine context of activity.');
            }
        } elseif ($subject instanceof AccompanyingPeriod) {
            if (AccompanyingPeriod::STEP_CLOSED === $subject->getStep()) {
                if (in_array($attribute, [self::UPDATE, self::CREATE, self::DELETE], true)) {
                    return false;
                }
            }

            // transform the attribute
            if (self::CREATE === $attribute) {
                return $this->voterHelper->voteOnAttribute(self::CREATE_ACCOMPANYING_COURSE, $subject, $token);
            }
        } elseif ($subject instanceof Person) {
            // transform the attribute
            if (self::CREATE === $attribute) {
                return $this->voterHelper->voteOnAttribute(self::CREATE_PERSON, $subject, $token);
            }
        }

        return $this->voterHelper->voteOnAttribute($attribute, $subject, $token);
    }
}