class.ilTestQuestionSetConfigFactory.php

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<?php

class ilTestQuestionSetConfigFactory
{
    private ilTree $tree;
    private ilDBInterface $db;
    private ilComponentRepository $component_repository;
    private ilObjTest $testOBJ;
    private ?ilTestQuestionSetConfig $testQuestionSetConfig = null;

    public function __construct(
        ilTree $tree,
        ilDBInterface $db,
        ilComponentRepository $component_repository,
        ilObjTest $testOBJ
    ) {
        $this->tree = $tree;
        $this->db = $db;
        $this->component_repository = $component_repository;
        $this->testOBJ = $testOBJ;
    }

    public function getQuestionSetConfig(): ilTestQuestionSetConfig
    {
        return $this->getQuestionSetConfigByType();
    }

    public function getQuestionSetConfigByType(): ilTestQuestionSetConfig
    {
        if ($this->testQuestionSetConfig === null) {
            if ($this->testOBJ->isFixedTest()) {
                $this->testQuestionSetConfig = new ilTestFixedQuestionSetConfig(
                    $this->tree,
                    $this->db,
                    $this->component_repository,
                    $this->testOBJ
                );
            }
            if ($this->testOBJ->isRandomTest()) {
                $this->testQuestionSetConfig = new ilTestRandomQuestionSetConfig(
                    $this->tree,
                    $this->db,
                    $this->component_repository,
                    $this->testOBJ
                );
            }

            if ($this->testOBJ->isDynamicTest()) {
                $this->testQuestionSetConfig = new ilObjTestDynamicQuestionSetConfig(
                    $this->tree,
                    $this->db,
                    $this->component_repository,
                    $this->testOBJ
                );
            }

            $this->testQuestionSetConfig->loadFromDb();
        }

        return $this->testQuestionSetConfig;
    }
}