/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */

/*
    Rosegarden
    A MIDI and audio sequencer and musical notation editor.
    Copyright 2000-2022 the Rosegarden development team.
 
    This file is Copyright 2005
        Toni Arnold         <toni__arnold@bluewin.ch>

    Other copyrights also apply to some parts of this work.  Please
    see the AUTHORS file and individual file headers for details.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#define RG_MODULE_STRING "[LircClient]"

#include "LircClient.h"

#ifdef HAVE_LIRC

#include "misc/Debug.h"
#include "base/Exception.h"
#include <QObject>
#include <QSocketNotifier>
#include <fcntl.h>
#include <cstdlib>
#include <unistd.h>

namespace Rosegarden
{

LircClient::LircClient()
        : QObject()
{
    int socketFlags;

    // socket setup with nonblock
    char prog[] = "rosegarden";  // fixes compiler warning
    m_socket = lirc_init(prog, 1);
    if (m_socket == -1) {
        throw Exception("Failed to connect to LIRC");
    }

    if (lirc_readconfig(nullptr, &m_config, nullptr) == -1) {
        throw Exception("Failed reading LIRC config file");
    }

    fcntl(m_socket, F_GETOWN, getpid());
    socketFlags = fcntl(m_socket, F_GETFL, 0);
    if (socketFlags != -1) {
        fcntl(socketFlags, F_SETFL, socketFlags | O_NONBLOCK);
    }

    m_socketNotifier = new QSocketNotifier(m_socket, QSocketNotifier::Read, nullptr);
    connect(m_socketNotifier, &QSocketNotifier::activated, this, &LircClient::readButton );

    RG_DEBUG << "LircClient::LircClient: connected to socket: " << m_socket;
}

LircClient::~LircClient()
{
    lirc_freeconfig(m_config);
    delete m_socketNotifier;
    lirc_deinit();

    RG_DEBUG << "LircClient::~LircClient: cleaned up";
}

void LircClient::readButton()
{
    char *code;
    int ret;

    RG_DEBUG << "LircClient::readButton";

    if (lirc_nextcode(&code) == 0 && code != nullptr) {   // no error && a string is available
        // handle any command attached to that button
        while ( (ret = lirc_code2char(m_config, code, &m_command)) == 0 && m_command != nullptr ) 
        {
            emit buttonPressed(m_command);
        }
        free(code);
    }
}

}


#endif
