/* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
 * Software engineering by Intevation GmbH
 *
 * This file is Free Software under the GNU GPL (v>=2)
 * and comes with ABSOLUTELY NO WARRANTY!
 * See LICENSE.txt for details.
 *
 * Parts of this code (especially windows) are based on kpimutils processes.cpp
 * available under LGPL 2.1 or later.
 */
#ifndef PROCESSHELP_H
#define PROCESSHELP_H

#include <QList>
#include <QString>
#include <QDateTime>

/**
 * @file processhelp.h
 * @brief Static helper functions for process handling
 */
/** @brief Static helper functions for process handling */
class ProcessHelp {

public:
/**
* @brief look up process id's for a processName
*
* Looks up processes run by the current user.
*
* @param[in] processName the name of the process to look for
* @returns a list of pids that match this process. May be empty
*/
static const QList<int> getProcessesIdForName(const QString &processName);

/**
* @brief check if another process with the same name exists
*
* Under GNU/Linux this only works for processes that have a
* processName.pid file in QStandardPaths::DataLocation.
*
* @param[in] processName name of the process to look for.
*
* @returns true if one or more processes (other than the current process) exist
*/
static bool otherProcessesExist(const QString &processName);

/**
* @brief Activates the window for first found process
* @param [in] executableName executableName (without path and .exe extension)
*/
static void activateWindowForProcess(const QString &executableName);

/**
* @brief Clean up internaly used infrastructure like pid/lock files.
*/
static void cleanUp(void);

#ifndef WIN32
/**
* @brief Read the signature timestamp from settings.
*
* @returns The signature timestamp as qdatetime or an invalid dt on error.
*/
static QDateTime getSigDtFromInstSettings();
#endif
};

#endif // PROCESSHELP_H