/*
    This file is part of the KDE libraries
    SPDX-FileCopyrightText: 2009 Michael Leupold <lemma@confuego.org>

    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/

#include "kpasswdserverclient.h"
#include "kiocoredebug.h"

#include <kio/authinfo.h>
#include <kio/global.h>

#include "kpasswdserver_interface.h"
#include "kpasswdserverloop_p.h"

class KPasswdServerClientPrivate
{
public:
    KPasswdServerClientPrivate()
        : seqNr(0)
    {
    }

    qlonglong seqNr;
    QString lastHost;
};

KPasswdServerClient::KPasswdServerClient()
    : m_interface(
          new OrgKdeKPasswdServerInterface(QStringLiteral("org.kde.kpasswdserver6"), QStringLiteral("/modules/kpasswdserver"), QDBusConnection::sessionBus()))
    , d(new KPasswdServerClientPrivate)
{
}

KPasswdServerClient::~KPasswdServerClient()
{
    delete m_interface;
}

bool KPasswdServerClient::checkAuthInfo(KIO::AuthInfo *info, qlonglong windowId, qlonglong usertime)
{
    // qDebug() << "window-id=" << windowId << "url=" << info.url;

    if (!QCoreApplication::instance()) {
        qCWarning(KIO_CORE) << "KIO worker is not a QCoreApplication! This is required for checkAuthInfo.";
        return false;
    }

    // create the loop for waiting for a result before sending the request
    KPasswdServerLoop loop;
    QObject::connect(m_interface, &OrgKdeKPasswdServerInterface::checkAuthInfoAsyncResult, &loop, &KPasswdServerLoop::slotQueryResult);

    QDBusReply<qlonglong> reply = m_interface->checkAuthInfoAsync(*info, windowId, usertime);
    if (!reply.isValid()) {
        qCWarning(KIO_CORE) << "Can't communicate with kiod_kpasswdserver (for checkAuthInfo)!" << reply.error().message();
        return false;
    }

    if (!loop.waitForResult(reply.value())) {
        qCWarning(KIO_CORE) << "kiod_kpasswdserver died while waiting for reply!";
        return false;
    }

    if (loop.authInfo().isModified()) {
        // qDebug() << "username=" << info.username << "password=[hidden]";
        *info = loop.authInfo();
        return true;
    }

    return false;
}

int KPasswdServerClient::queryAuthInfo(KIO::AuthInfo *info, const QString &errorMsg, qlonglong windowId, qlonglong usertime)
{
    if (info->url.host() != d->lastHost) { // see kpasswdserver/DESIGN
        d->lastHost = info->url.host();
        d->seqNr = 0;
    }

    // qDebug() << "window-id=" << windowId;

    if (!QCoreApplication::instance()) {
        qCWarning(KIO_CORE) << "KIO worker is not a QCoreApplication! This is required for queryAuthInfo.";
        return KIO::ERR_PASSWD_SERVER;
    }

    // create the loop for waiting for a result before sending the request
    KPasswdServerLoop loop;
    QObject::connect(m_interface, &OrgKdeKPasswdServerInterface::queryAuthInfoAsyncResult, &loop, &KPasswdServerLoop::slotQueryResult);

    QDBusReply<qlonglong> reply = m_interface->queryAuthInfoAsync(*info, errorMsg, windowId, d->seqNr, usertime);
    if (!reply.isValid()) {
        qCWarning(KIO_CORE) << "Can't communicate with kiod_kpasswdserver (for queryAuthInfo)!";
        // qDebug() << reply.error().name() << reply.error().message();
        return KIO::ERR_PASSWD_SERVER;
    }

    if (!loop.waitForResult(reply.value())) {
        qCWarning(KIO_CORE) << "kiod_kpasswdserver died while waiting for reply!";
        return KIO::ERR_PASSWD_SERVER;
    }

    *info = loop.authInfo();

    // qDebug() << "username=" << info->username << "password=[hidden]";

    const qlonglong newSeqNr = loop.seqNr();

    if (newSeqNr > 0) {
        d->seqNr = newSeqNr;
        if (info->isModified()) {
            return KJob::NoError;
        }
    }

    return KIO::ERR_USER_CANCELED;
}

void KPasswdServerClient::addAuthInfo(const KIO::AuthInfo &info, qlonglong windowId)
{
    m_interface->addAuthInfo(info, windowId);
}

void KPasswdServerClient::removeAuthInfo(const QString &host, const QString &protocol, const QString &user)
{
    m_interface->removeAuthInfo(host, protocol, user);
}