<?php

namespace App\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;

/**
 * Tag.
 *
 * @ORM\Table(name="tag")
 * @ORM\Entity(repositoryClass="App\Repository\TagRepository")
 * @UniqueEntity("id", message="Ce nom de tag existe dèja")
 */
class Tag
{
    /**
     * @ORM\Id
     * @ORM\Column(type="string")
     */
    private $id;

    /**
     * @ORM\ManyToMany(targetEntity="Child", mappedBy="tags")
     */
    protected $childs;

    public function __construct()
    {
        $this->childs = new ArrayCollection();
    }

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

    public function setId(string $id): self
    {
        $this->id = $id;

        return $this;
    }

    /**
     * @return Collection|Child[]
     */
    public function getChilds(): Collection
    {
        return $this->childs;
    }

    public function addChild(Child $child): self
    {
        if (!$this->childs->contains($child)) {
            $this->childs[] = $child;
            $child->addTag($this);
        }

        return $this;
    }

    public function removeChild(Child $child): self
    {
        if ($this->childs->contains($child)) {
            $this->childs->removeElement($child);
            $child->removeTag($this);
        }

        return $this;
    }
}