/*
 * NotificationDaemon.cpp
 *
 * Copyright (C) 2021  Emanoil Kotsev <deloptes@gmail.com>
 *
 *
 *  This file is part of kdbusnotification.
 *
 * 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 <tqtimer.h>
#include <tqdbusmessage.h>
#include <tqdbuserror.h>

#include "NotificationDaemon.h"

// path /org/freedesktop/Notifications
#define NOTIFICATIONS_DBUS_SRVC "org.freedesktop.Notifications"

#define DBUS_CONNECTION_TIMEOUT 4000
#define DBUS_CONNECTION_RETRY 3

NotificationDaemon::NotificationDaemon()
    : TDEUniqueApplication(),
      retryCount(0)
{
    // init session connection to dbus
    if (!initDBUS()) {
        tqDebug("Failed to initialize the connection to DBus");
        TQTimer::singleShot(DBUS_CONNECTION_TIMEOUT, this, TQ_SLOT(slotReconnect()));
        retryCount++;
    }
}

NotificationDaemon::~NotificationDaemon()
{
    // close D-Bus connection
    dbusConnectionClose();
}

bool NotificationDaemon::initDBUS(){
    mConnection = TQT_DBusConnection::addConnection(TQT_DBusConnection::SessionBus, NOTIFICATIONS_DBUS_SRVC);

    if ( !mConnection.isConnected() ) {
        tqDebug("Failed to open connection to system message bus: "
                + mConnection.lastError().message());
        return false;
    }
    mConnection.connect(this, TQ_SLOT(slotDbusSignal(const TQT_DBusMessage&)));

    // try to get a specific service name
    if (!mConnection.requestName(NOTIFICATIONS_DBUS_SRVC, TQT_DBusConnection::NoReplace))
        return false;

    // make sure we get a reply
    mConnection.scheduleDispatch();

    return true;
}

void NotificationDaemon::dbusConnectionClose() {

    if(rootService)
    {
       delete rootService;
       rootService=0;
    }
    if(orgService)
    {
       delete orgService;
       orgService=0;
    }
    if(freedesktopService)
    {
       delete freedesktopService;
       freedesktopService=0;
    }
    if(notificationNodeService)
    {
       delete notificationNodeService;
       notificationNodeService=0;
    }

    if(mConnection.isConnected()) {
        mConnection.disconnect(this, TQ_SLOT(slotDbusSignal(const TQT_DBusMessage&)));
        mConnection.closeConnection(NOTIFICATIONS_DBUS_SRVC);
    }
    retryCount=0;
}

void NotificationDaemon::slotReconnect() {

    dbusConnectionClose();

    if (!initDBUS()) {
        if (DBUS_CONNECTION_RETRY > retryCount) {
            tqFatal("Failed to initialize the connection to DBus");
        }
        TQTimer::singleShot(DBUS_CONNECTION_TIMEOUT, this, TQ_SLOT(slotReconnect()));
        retryCount++;
    }
}

void NotificationDaemon::slotDbusSignal(const TQT_DBusMessage& message) {
    TQString serviceName = message[0].toString();
    if ( message.interface() == TQString("org.freedesktop.DBus") &&
            message.member() == TQString("NameAcquired") &&
            serviceName == NOTIFICATIONS_DBUS_SRVC )
    {
        tqDebug("TDENotification unique DBus name acquired: " + serviceName);
        rootService    = new RootNodeService(mConnection);
        orgService     = new OrgNodeService(mConnection);
        freedesktopService   = new FreeDesktopNodeService(mConnection);
        notificationNodeService  = new NotificationsNodeService(mConnection);
        tqDebug("TDENotification service setup done.");
    }
}

#include "NotificationDaemon.moc"