<?php

/**
 * This file is part of the FreeDSx LDAP package.
 *
 * (c) Chad Sikorra <Chad.Sikorra@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace FreeDSx\Ldap\Operation\Request;

use FreeDSx\Asn1\Asn1;
use FreeDSx\Asn1\Type\AbstractType;
use FreeDSx\Ldap\Exception\BindException;

/**
 * Represents a simple bind request consisting of a username (dn, etc) and a password.
 *
 * AuthenticationChoice ::= CHOICE {
 *     simple                  [0] OCTET STRING,
 *     -- 1 and 2 reserved
 *     sasl                    [3] SaslCredentials,
 *     ...  }
 *
 * @author Chad Sikorra <Chad.Sikorra@gmail.com>
 */
class SimpleBindRequest extends BindRequest
{
    /**
     * @var string
     */
    protected $password;

    /**
     * @param string $username
     * @param string $password
     * @param int $version
     */
    public function __construct(string $username, string $password, int $version = 3)
    {
        $this->username = $username;
        $this->password = $password;
        $this->version = $version;
    }

    /**
     * @return string
     */
    public function getPassword(): string
    {
        return $this->password;
    }

    /**
     * @param string $password
     * @return $this
     */
    public function setPassword(string $password)
    {
        $this->password = $password;

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    protected function getAsn1AuthChoice(): AbstractType
    {
        return Asn1::context(0, Asn1::octetString($this->password));
    }

    /**
     * @throws BindException
     */
    protected function validate(): void
    {
        if ($this->username === '' || $this->password === '') {
            throw new BindException('A simple bind must have a non-empty username and password.');
        }
    }
}