<?php

namespace App\Entity;

use App\Repository\AnswerRepository;
use Doctrine\ORM\Mapping as ORM;
use Gedmo\Timestampable\Traits\TimestampableEntity;

/**
 * @ORM\Entity(repositoryClass=AnswerRepository::class)
 */
class Answer
{
    public const STATUS_NEEDS_APPROVAL = 'needs_approval';
    public const STATUS_SPAM = 'spam';
    public const STATUS_APPROVED = 'approved';

    use TimestampableEntity;

    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="text")
     */
    private $content;

    /**
     * @ORM\Column(type="string", length=255)
     */
    private $username;

    /**
     * @ORM\Column(type="integer")
     */
    private $votes = 0;

    /**
     * @ORM\ManyToOne(targetEntity=Question::class, inversedBy="answers")
     * @ORM\JoinColumn(nullable=false)
     */
    private $question;

    /**
     * @ORM\Column(type="string", length=15)
     */
    private $status = self::STATUS_NEEDS_APPROVAL;

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

    public function getContent(): ?string
    {
        return $this->content;
    }

    public function setContent(string $content): self
    {
        $this->content = $content;

        return $this;
    }

    public function getUsername(): ?string
    {
        return $this->username;
    }

    public function setUsername(string $username): self
    {
        $this->username = $username;

        return $this;
    }

    public function getVotes(): ?int
    {
        return $this->votes;
    }

    public function setVotes(int $votes): self
    {
        $this->votes = $votes;

        return $this;
    }

    public function getQuestion(): ?Question
    {
        return $this->question;
    }

    public function getQuestionText(): string
    {
        if (!$this->getQuestion()) {
            return '';
        }

        return (string) $this->getQuestion()->getQuestion();
    }

    public function setQuestion(?Question $question): self
    {
        $this->question = $question;

        return $this;
    }

    public function getStatus(): ?string
    {
        return $this->status;
    }

    public function setStatus(string $status): self
    {
        if (!in_array($status, [self::STATUS_NEEDS_APPROVAL, self::STATUS_SPAM, self::STATUS_APPROVED])) {
            throw new \InvalidArgumentException(sprintf('Invalid status "%s"', $status));
        }

        $this->status = $status;

        return $this;
    }

    public function isApproved(): bool
    {
        return $this->status === self::STATUS_APPROVED;
    }
}
