/*
 *   Copyright (C) 2011 Adam Nash <adam.t.nash@gmail.com>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License version 2,
 *   or (at your option) any later version, 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.,
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include "linuxprocessinfogatherer.h"
#include <QRegExp>
#include <QDir>
#include <QApplication>

LinuxProcessInfoGatherer::LinuxProcessInfoGatherer(QObject *parent) :
    ProcessInfoGatherer(parent)
{
    m_helper = new LinuxProcessInfoGathererHelper();

    connect(this, SIGNAL(triggerHelper()),
            m_helper, SLOT(checkActiveWindow()));
    connect(m_helper, SIGNAL(activeWindowProcessChanged(QString)),
            this, SIGNAL(activeWindowProcessChanged(QString)));
    connect(m_helper, SIGNAL(activeWindowTitleChanged(QString)),
            this, SIGNAL(activeWindowTitleChanged(QString)));

    m_helper->moveToThread(qApp->thread());
}

void LinuxProcessInfoGatherer::checkCurrentProcesses()
{
    QDir procDir;
    QFileInfoList files;
    QFile commFile;
    QString processName;
    bool okay = true;
    int pid;

    //get a list of all the directories in the /proc directory
    procDir.setPath("/proc");
    files = procDir.entryInfoList(QStringList("*"), QDir::AllDirs, QDir::Unsorted);

    //find the process directories and get the names from the comm files
    foreach (QFileInfo info, files)
    {
        pid = info.baseName().toInt(&okay);
        if (!okay)
          continue;

        processName = m_helper->getProcessName(pid);
        if (!processName.isNull())
            //add the process name to the list of current process names
            m_currentlyRunningProcesses.push_back(processName);
    }
}

LinuxProcessInfoGatherer::~LinuxProcessInfoGatherer()
{
    m_helper->deleteLater();
}

void LinuxProcessInfoGatherer::checkActiveWindow()
{
    emit triggerHelper();
}
