<?php

namespace openid\requests;

use openid\helpers\OpenIdUriHelper;
use openid\OpenIdMessage;
use openid\OpenIdProtocol;

/**
 * Class OpenIdCheckAuthenticationRequest
 * @package openid\requests
 */
class OpenIdCheckAuthenticationRequest extends OpenIdAuthenticationRequest
{

    private $op_endpoint_url;

    /**
     * @param OpenIdMessage $message
     * @param               $op_endpoint_url
     */
    public function __construct(OpenIdMessage $message, $op_endpoint_url)
    {
        parent::__construct($message);
        $this->op_endpoint_url = $op_endpoint_url;
    }

    public static function IsOpenIdCheckAuthenticationRequest(OpenIdMessage $message)
    {
        $mode = $message->getMode();
        if ($mode == OpenIdProtocol::CheckAuthenticationMode) {
            return true;
        }

        return false;
    }

    public function isValid()
    {
        $mode = $this->getMode();
        $claimed_assoc = $this->getAssocHandle();
        $claimed_nonce = $this->getNonce();
        $claimed_sig = $this->getSig();
        $claimed_op_endpoint = $this->getOPEndpoint();
        $claimed_identity = $this->getClaimedId();
        $claimed_realm = $this->getRealm();
        $claimed_returnTo = $this->getReturnTo();
        $signed = $this->getSigned();

        $valid_realm = OpenIdUriHelper::checkRealm($claimed_realm, $claimed_returnTo);

        $res = !is_null($mode) && !empty($mode) && $mode == OpenIdProtocol::CheckAuthenticationMode
            && !is_null($claimed_returnTo) && !empty($claimed_returnTo) && OpenIdUriHelper::checkReturnTo($claimed_returnTo)
            && !is_null($claimed_realm) && !empty($claimed_realm) && $valid_realm
            && !is_null($claimed_assoc) && !empty($claimed_assoc)
            && !is_null($claimed_sig) && !empty($claimed_sig)
            && !is_null($signed) && !empty($signed)
            && !is_null($claimed_nonce) && !empty($claimed_nonce)
            && !is_null($claimed_op_endpoint) && !empty($claimed_op_endpoint) && $claimed_op_endpoint == $this->op_endpoint_url
            && !is_null($claimed_identity) && !empty($claimed_identity) && OpenIdUriHelper::isValidUrl($claimed_identity);
        if (!$res) {
            $msg = sprintf("return_to is empty? %b.", empty($claimed_returnTo)) . PHP_EOL;
            $msg = $msg . sprintf("realm is empty? %b.", empty($claimed_realm)) . PHP_EOL;
            $msg = $msg . sprintf("claimed_id is empty? %b.", empty($claimed_id)) . PHP_EOL;
            $msg = $msg . sprintf("identity is empty? %b.", empty($claimed_identity)) . PHP_EOL;
            $msg = $msg . sprintf("mode is empty? %b.", empty($mode)) . PHP_EOL;
            $msg = $msg . sprintf("is valid realm? %b.", $valid_realm) . PHP_EOL;
            throw new InvalidOpenIdMessageException($msg);
        }

        return $res;
    }

    public function getNonce()
    {
        return $this->getParam(OpenIdProtocol::OpenIDProtocol_Nonce);
    }

    public function getSig()
    {
        return $this->getParam(OpenIdProtocol::OpenIDProtocol_Sig);
    }

    public function getOPEndpoint()
    {
        return $this->getParam(OpenIdProtocol::OpenIDProtocol_OpEndpoint);
    }

    public function getSigned()
    {
        return $this->getParam(OpenIdProtocol::OpenIDProtocol_Signed);
    }

    public function getInvalidateHandle()
    {
        return $this->getParam(OpenIdProtocol::OpenIDProtocol_InvalidateHandle);
    }
}
