class.ilMailOnlyExternalAddressList.php

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<?php

declare(strict_types=1);

class ilMailOnlyExternalAddressList implements ilMailAddressList
{
    protected ilMailAddressList $origin;
    protected string $installationHost;
    protected $getUsrIdByLoginCallable;

    public function __construct(
        ilMailAddressList $origin,
        string $installationHost,
        callable $getUsrIdByLoginCallable
    ) {
        $this->origin = $origin;
        $this->installationHost = $installationHost;
        $this->getUsrIdByLoginCallable = $getUsrIdByLoginCallable;
    }

    public function value(): array
    {
        $addresses = $this->origin->value();

        $filteredAddresses = array_filter($addresses, function (ilMailAddress $address): bool {
            $c = $this->getUsrIdByLoginCallable;
            if ($c((string) $address)) {
                // Fixed mantis bug #5875
                return false;
            }

            if ($address->getHost() === $this->installationHost) {
                return false;
            }

            if (strpos($address->getMailbox(), '#') === 0) {
                return false;
            }

            return true;
        });

        return $filteredAddresses;
    }
}