/*************************************************************************
 *  Copyright (C) 2008 by Volker Lanz <vl@fidra.de>                      *
 *                                                                       *
 *  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 3 of       *
 *  the License, or (at your option) any later version.                  *
 *                                                                       *
 *  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, see <http://www.gnu.org/licenses/>.*
 *************************************************************************/

#if !defined(EXTERNALCOMMAND__H)

#define EXTERNALCOMMAND__H

#include "../util/libpartitionmanagerexport.h"

#include <vector>

#include <QProcess>
#include <QStringList>
#include <QString>
#include <QtGlobal>

class Report;

/** An external command.

    Runs an external command as a child process.

    @author Volker Lanz <vl@fidra.de>
    @author Andrius Štikonas <andrius@stikonas.eu>
*/
class LIBKPMCORE_EXPORT ExternalCommand : public QProcess
{
    Q_OBJECT
    Q_DISABLE_COPY(ExternalCommand)

public:
    explicit ExternalCommand(const QString& cmd = QString(), const QStringList& args = QStringList());
    explicit ExternalCommand(Report& report, const QString& cmd = QString(), const QStringList& args = QStringList());
    explicit ExternalCommand(const std::vector<QString> cmd, const std::vector<QStringList> args);
    explicit ExternalCommand(Report& report, const std::vector<QString> cmd, const std::vector<QStringList> args);
    ~ExternalCommand();

public:
    void setCommand(const std::vector<QString> cmd) {
        m_Command = cmd;    /**< @param cmd the command to run */
    }
    const std::vector<QString> command() const {
        return m_Command;    /**< @return the command to run */
    }

    /** @param s the argument to add
        @param i the command to which the argument is added
    */
    void addArg(const QString& s, const int i = 0) {
        m_Args[i] << s;
    }
    const std::vector<QStringList> args() const {
        return m_Args;    /**< @return the arguments */
    }
    void setArgs(const std::vector<QStringList> args) {
        m_Args = args;    /**< @param args the new arguments */
    }

    bool start(int timeout = 30000);
    bool waitFor(int timeout = 30000);
    bool run(int timeout = 30000);

    int exitCode() const {
        return m_ExitCode;    /**< @return the exit code */
    }

    const QString& output() const {
        return m_Output;    /**< @return the command output */
    }

    Report* report() {
        return m_Report;    /**< @return pointer to the Report or nullptr */
    }

protected:
    void setExitCode(int i) {
        m_ExitCode = i;
    }
    void setup();

protected Q_SLOTS:
    void onFinished(int exitCode);
    void onReadOutput();

private:
    QProcess *processes;
    Report *m_Report;
    std::vector<QString> m_Command;
    std::vector<QStringList> m_Args;
    int m_ExitCode;
    QString m_Output;
};

#endif