<?php
declare(strict_types=1);

namespace App\Entity;

use App\Repository\InviteRepository;
use Doctrine\ORM\Mapping as ORM;

#[ORM\Table(name: 'invites', schema: 'users')]
#[ORM\Entity(repositoryClass: InviteRepository::class)]
class Invite
{
    #[ORM\Id]
    #[ORM\GeneratedValue(strategy: 'AUTO')]
    #[ORM\Column(name: 'id', type: 'integer')]
    private int $id;

    #[ORM\ManyToOne(targetEntity: User::class, inversedBy: 'invites')]
    #[ORM\JoinColumn(name: 'user_id', nullable: false)]
    private User $user;

    #[ORM\Column(name: 'code', type: 'string', length: 32, unique: true)]
    private string $code;

    #[ORM\ManyToOne(targetEntity: User::class)]
    #[ORM\JoinColumn(name: 'used_by_id', nullable: true)]
    private ?User $usedBy;

    public function __construct(User $forUser)
    {
        $this->user = $forUser;
        $this->code = md5(\random_bytes(100));
    }

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

    public function getUser(): User
    {
        return $this->user;
    }

    public function getCode(): string
    {
        return $this->code;
    }

    public function getUsedBy(): ?User
    {
        return $this->usedBy;
    }

    public function use(User $user): void
    {
        if ($this->usedBy) {
            throw new \RuntimeException(sprintf(
                'Invite #%d is already used by User#%d and can\'t be used by User#%d',
                $this->id,
                $this->usedBy->getId(),
                $user->getId()
            ));
        }

        $this->usedBy = $user;
    }
}