ilAssLacStringResultExpression.php

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<?php

class ilAssLacStringResultExpression extends ilAssLacAbstractExpression implements ilAssLacSolutionExpressionInterface
{
    public static $pattern = "/~.*?~/";

    public static $identifier = "~TEXT~";

    protected $text;

    public function getPattern(): string
    {
        return '/~(.*)~/';
    }

    protected function setMatches($matches): void
    {
        $this->text = $matches[1][0];
    }

    public function getText(): string
    {
        return $this->text;
    }

    public function getValue(): string
    {
        return "~" . $this->text . '~';
    }

    public function getDescription(): string
    {
        return $this->text . " beantwortet ";
    }

    public function checkResult($result, $comperator, $index = null): bool
    {
        $isTrue = false;
        if ($index == null) {
            $values = $result->getUserSolutionsByIdentifier("value");

            foreach ($values as $value) {
                $isTrue = $isTrue || $this->compare($comperator, $value);
            }
        } else {
            $solution = $result->getSolutionForKey($index);
            $isTrue = $this->compare($comperator, $solution["value"] ?? "");
        }

        return $isTrue;
    }

    private function compare($comperator, $value): bool
    {
        switch ($comperator) {
            case "=":
                return $this->getText() == $value;
                break;
            case "<>":
                return $this->getText() != $value;
                break;
            default:
                return false;
        }
    }
}