/*
 * screensaverInterfaceImpl.cpp
 *
 *
 *  (C) 2024 Emanoil Kotsev
 *  deloptes (AT) gmail.com
 *
 * tdebase Copyright (C) 2009 tdebase development team
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */


#include "screensaverInterfaceImpl.h"

ScreenSaverInterfaceImpl::ScreenSaverInterfaceImpl(TQT_DBusConnection &conn) :
        m_connection(&conn),
        m_ccount(1),
        m_kdesktopdcoprefobj("kdesktop", "KScreensaverIface")
{
    isScreenSaverEnabled  = screenSaverIsEnabled();
    tqDebug(TQString("ScreenSaver isEnabled = %1").arg((isScreenSaverEnabled)?"yes":"no"));
}

ScreenSaverInterfaceImpl::~ScreenSaverInterfaceImpl()
{
}

void ScreenSaverInterfaceImpl::restoreState()
{
    // restore the state
    forceScreenSaver(isScreenSaverEnabled);
}

/*!
 * Implement virtual methods
 *
 */
void ScreenSaverInterfaceImpl::handleMethodReply(const TQT_DBusMessage& reply)
{
    m_connection->send(reply);
}

bool ScreenSaverInterfaceImpl::handleSignalSend(const TQT_DBusMessage& reply)
{
    return true;
}

TQString ScreenSaverInterfaceImpl::objectPath() const
{
    return TQString(DBUS_SCREENSAVER_SERVICE_PATH);
}

bool ScreenSaverInterfaceImpl::Lock(TQT_DBusError& dbuserror) {

    DCOPReply reply = m_kdesktopdcoprefobj.call("lock");
    if (!reply.isValid())
    {
        TQString e("ScreenSaverInterfaceImpl::Lock: there was some error using DCOP.");
        tqDebug(e);
        dbuserror = TQT_DBusError::stdFailed(e);
        return false;
    }
    return true;
}

bool ScreenSaverInterfaceImpl::SimulateUserActivity(TQT_DBusError& dbuserror) {
    tqDebug("SimulateUserActivity not implemented");
    return true;
}

bool ScreenSaverInterfaceImpl::GetActive(bool& arg0, TQT_DBusError& dbuserror) {
    tqDebug("GetActive not implemented");
    return true;
}

bool ScreenSaverInterfaceImpl::GetActiveTime(TQ_UINT32& seconds, TQT_DBusError& dbuserror) {
    tqDebug("GetActiveTime not implemented");
    return true;
}

bool ScreenSaverInterfaceImpl::GetSessionIdleTime(TQ_UINT32& seconds, TQT_DBusError& dbuserror) {
    tqDebug("GetSessionIdleTime not implemented");
    return true;
}

bool ScreenSaverInterfaceImpl::SetActive(bool& arg0, bool e, TQT_DBusError& dbuserror) {
    tqDebug("SetActive not implemented");
    return true;
}

bool ScreenSaverInterfaceImpl::Inhibit(const TQString& application_name, const TQString& reason_for_inhibit, TQ_UINT32& cookie, TQT_DBusError& dbuserror) {

    //this is to make sure we have the actual state - it could have been changed meanwhile
    isScreenSaverEnabled = screenSaverIsEnabled();
    if (isScreenSaverEnabled && m_cookies.isEmpty()) // disable only once
    {
        if (!forceScreenSaver(false))
        {
            dbuserror = TQT_DBusError::stdFailed(TQString("Failed to disable the screen saver"));
        }
    }

    cookie=m_ccount++;
    ScreenSaverInterfaceImpl::Pair v;
    v.name = application_name;
    v.value = reason_for_inhibit;
    m_cookies[cookie] = v;
    tqDebug(TQString("Inhibit: cookie(%1), application(%2), reason(%3)")
            .arg(cookie)
            .arg(m_cookies[cookie].name)
            .arg(m_cookies[cookie].value).local8Bit());

    return true;
}

bool ScreenSaverInterfaceImpl::UnInhibit(TQ_UINT32 cookie, TQT_DBusError& dbuserror) {
    tqDebug(TQString("UnInhibit: cookie(%1), application(%2), reason(%3)")
            .arg(cookie)
            .arg(m_cookies[cookie].name)
            .arg(m_cookies[cookie].value).local8Bit());

    m_cookies.remove(cookie);
    if (m_cookies.isEmpty())
    {
        // restore states when all applications finished
        if (!forceScreenSaver(isScreenSaverEnabled))
        {
            dbuserror = TQT_DBusError::stdFailed(TQString("Failed to switch ScreenSaver %1!").arg(
                    (isScreenSaverEnabled) ? "on" : "off"));
        }
    }
    return true;
}

bool ScreenSaverInterfaceImpl::Throttle(const TQString& application_name, const TQString& reason_for_inhibit, TQ_UINT32& cookie, TQT_DBusError& dbuserror) {
    tqDebug("Throttle not implemented");
    return true;
}

bool ScreenSaverInterfaceImpl::UnThrottle(TQ_UINT32 cookie, TQT_DBusError& dbuserror) {
    tqDebug("UnThrottle not implemented");
    return true;
}

bool ScreenSaverInterfaceImpl::screenSaverIsEnabled()
{
    DCOPReply reply = m_kdesktopdcoprefobj.call("isEnabled");
    bool on = false;
    if (!reply.isValid())
    {
        tqDebug("ScreenSaverInterfaceImpl::screenSaverIsEnabled(): there was some error using DCOP.");
    }
    else
    {
        if (!reply.get(on))
        {
            tqDebug("ScreenSaverInterfaceImpl::screenSaverIsEnabled(): there was some error getting the value from DCOPReply");
        }
    }
    return on;
}

bool ScreenSaverInterfaceImpl::forceScreenSaver(bool on)
{
    DCOPReply reply = m_kdesktopdcoprefobj.call("enable", on);
    if (!reply.isValid())
    {
        tqDebug(TQString("Failed to switch ScreenSaver %1!").arg((on) ? "on" : "off"));
        return false;
    }
    return true;
}
// End of File