taurus-api/src/App/Entity/VacationDay.php

<?php

namespace App\Entity;

use Doctrine\Common\Collections\ArrayCollection;

class VacationDay implements \JsonSerializable
{
    /**
     * @var int
     */
    private $day;

    /**
     * @var string[]|ArrayCollection
     */
    private $signums;

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

    /**
     * @return int
     */
    public function getDay(): int
    {
        return $this->day;
    }

    /**
     * @param int $day
     * @return VacationDay
     */
    public function setDay(int $day): VacationDay
    {
        $this->day = $day;
        return $this;
    }

    /**
     * @return ArrayCollection|string[]
     */
    public function getSignums()
    {
        return $this->signums;
    }

    /**
     * @param ArrayCollection|string[] $signums
     * @return VacationDay
     */
    public function setSignums($signums): VacationDay
    {
        $this->signums = $signums;
        return $this;
    }

    /**
     * @param string $signum
     * @return VacationDay
     */
    public function addSignum(string $signum): VacationDay
    {
        if(!$this->signums->contains($signum)) {
            $this->signums->add($signum);
        }
        return $this;
    }

    /**
     * @param string $signum
     * @return VacationDay
     */
    public function removeSignum(string $signum): VacationDay
    {
        if($this->signums->contains($signum)) {
            $this->signums->removeElement($signum);
        }
        return $this;
    }

    /**
     * @return array
     */
    function jsonSerialize()
    {
        return [
            'day' => $this->getDay(),
            'signums' => $this->getSignums()->getValues(),
        ];
    }
}