class.assAnswerErrorText.php

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<?php

class assAnswerErrorText
{
    protected string $text_wrong;
    protected string $text_correct;
    protected float $points;
    protected ?int $position;
    protected int $length;

    public function __construct(
        string $text_wrong = "",
        string $text_correct = "",
        float $points = 0.0,
        ?int $position = null
    ) {
        $this->text_wrong = $text_wrong;
        $this->text_correct = $text_correct;
        $this->points = $points;
        $this->position = $position;

        $word_array = preg_split("/\s+/", $text_wrong);

        if ($word_array) {
            $this->length = count($word_array);
        }
    }

    public function getTextWrong(): string
    {
        return $this->text_wrong;
    }

    public function getTextCorrect(): string
    {
        return $this->text_correct;
    }

    public function getPoints(): float
    {
        return $this->points;
    }

    public function withPoints(float $points): self
    {
        $clone = clone $this;
        $clone->points = $points;
        return $clone;
    }

    public function getPosition(): ?int
    {
        return $this->position;
    }

    public function withPosition(int $position): self
    {
        $clone = clone $this;
        $clone->position = $position;
        return $clone;
    }

    public function getLength(): int
    {
        return $this->length;
    }
}