<?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\PersonBundle\Entity\Relationships;

use Chill\MainBundle\Doctrine\Model\TrackCreationInterface;
use Chill\MainBundle\Doctrine\Model\TrackCreationTrait;
use Chill\MainBundle\Doctrine\Model\TrackUpdateInterface;
use Chill\MainBundle\Doctrine\Model\TrackUpdateTrait;
use Chill\PersonBundle\Entity\Person;
use Chill\PersonBundle\Validator\Constraints\Relationship\RelationshipNoDuplicate;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\ORM\Mapping\DiscriminatorColumn;
use RuntimeException;
use Symfony\Component\Serializer\Annotation as Serializer;
use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
use Symfony\Component\Validator\Constraints as Assert;

#[DiscriminatorMap(typeProperty: 'type', mapping: ['relationship' => Relationship::class])]
#[ORM\Entity]
#[DiscriminatorColumn(name: 'relation_id', type: 'integer')]
#[ORM\Table(name: 'chill_person_relationships')]
#[RelationshipNoDuplicate]
class Relationship implements TrackCreationInterface, TrackUpdateInterface
{
    use TrackCreationTrait;
    use TrackUpdateTrait;

    #[Assert\NotNull]
    #[Serializer\Groups(['read', 'write'])]
    #[ORM\ManyToOne(targetEntity: Person::class)]
    #[ORM\JoinColumn(nullable: false)]
    private ?Person $fromPerson = null;

    #[Serializer\Groups(['read'])]
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::INTEGER)]
    private ?int $id = null;

    #[Assert\NotNull]
    #[Serializer\Groups(['read', 'write'])]
    #[ORM\ManyToOne(targetEntity: Relation::class)]
    #[ORM\JoinColumn(nullable: false, name: 'relation_id', referencedColumnName: 'id')]
    private ?Relation $relation = null;

    #[Assert\Type(type: 'bool', message: 'This must be of type boolean')]
    #[Serializer\Groups(['read', 'write'])]
    #[ORM\Column(type: \Doctrine\DBAL\Types\Types::BOOLEAN)]
    private bool $reverse;

    #[Assert\NotNull]
    #[Serializer\Groups(['read', 'write'])]
    #[ORM\ManyToOne(targetEntity: Person::class)]
    #[ORM\JoinColumn(nullable: false)]
    private ?Person $toPerson = null;

    public function getFromPerson(): ?Person
    {
        return $this->fromPerson;
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    /**
     * Return the opposite person of the @see{counterpart} person.
     *
     * this is the from person if the given is associated to the To,
     * or the To person otherwise.
     *
     * @throw RuntimeException if the counterpart is neither in the from or to person
     */
    public function getOpposite(Person $counterpart): Person
    {
        if ($this->fromPerson !== $counterpart && $this->toPerson !== $counterpart) {
            // during tests, comparing using equality does not work. We have to compare the ids
            if (
                ($this->fromPerson->getId() === $counterpart->getId() && $this->toPerson->getId() === $counterpart->getId())
                || null === $counterpart->getId()
            ) {
                throw new \RuntimeException(sprintf('the counterpart is neither the from nor to person for this relationship, expecting counterpart from %d and available %d and %d', $counterpart->getId(), $this->getFromPerson()->getId(), $this->getToPerson()->getId()));
            }
        }

        if ($this->fromPerson === $counterpart || $this->fromPerson->getId() === $counterpart->getId()) {
            return $this->toPerson;
        }

        return $this->fromPerson;
    }

    public function getRelation(): ?Relation
    {
        return $this->relation;
    }

    public function getReverse(): ?bool
    {
        return $this->reverse;
    }

    public function getToPerson(): ?Person
    {
        return $this->toPerson;
    }

    public function setFromPerson(?Person $fromPerson): self
    {
        $this->fromPerson = $fromPerson;

        return $this;
    }

    public function setRelation(?Relation $relation): self
    {
        $this->relation = $relation;

        return $this;
    }

    public function setReverse(bool $reverse): self
    {
        $this->reverse = $reverse;

        return $this;
    }

    public function setToPerson(?Person $toPerson): self
    {
        $this->toPerson = $toPerson;

        return $this;
    }
}