<?PHP
/**
 * Describes a reference to an external norm data repository.
 *
 * @author Joshua Ramon Enslin <joshua@museum-digital.de>
 */
declare(strict_types = 1);

/**
 * Describes a reference to an external norm data repository.
 */
final class MDNodaLink {

    public readonly MDNodaRepository $source;
    public readonly string $id;

    /**
     * Constructor.
     *
     * @param MDNodaRepository $source Source repository.
     * @param string           $id     ID.
     *
     * @return void
     */
    public function __construct(MDNodaRepository $source, string $id) {

        $this->source = $source;
        if (($validatedId = $this->source->validateId(trim($id))) === false) {
            throw new MDInvalidNodaLink("Invalid noda ID / link: " . $id . " [Repository: " . $this->source->toDbName() . "]");
        }
        $this->id = $validatedId;

    }
}