/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2021    Equinor ASA
//
//  ResInsight 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.
//
//  ResInsight 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 at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////
#pragma once

#include "RiaWslTools.h"

#include "cafFilePath.h"
#include "cafPdmField.h"
#include "cafPdmObject.h"

#include <QPointer>
#include <QString>
#include <QStringList>

#include <atomic>
#include <memory>
#include <utility>
#include <vector>

class RimProcessMonitor;
class QProcess;

class RimProcess : public caf::PdmObject
{
    CAF_PDM_HEADER_INIT;

public:
    RimProcess( bool logStdOutErr = true, std::shared_ptr<RimProcessMonitor> monitor = nullptr );
    ~RimProcess() override;

    void setDescription( QString desc );
    void setCommand( QString cmdStr );
    void addParameter( QString paramStr );
    void addParameters( QStringList parameterList );

    void addEnvironmentVariable( QString name, QString value );

    const std::vector<std::pair<QString, QString>>& environmentVariables() const;

    void    setWorkingDirectory( QString directory );
    QString workingDirectory() const;

    QString commandLine() const;

    QString                            command() const;
    QStringList                        parameters() const;
    size_t                             ID() const;
    QString                            description() const;
    std::shared_ptr<RimProcessMonitor> monitor() const;

    void                           setWslOptions( const RiaWslTools::WslOptions& wslOpt );
    const RiaWslTools::WslOptions& wslOptions() const;

    // blocking run
    bool execute( bool enableStdOut = true, bool enableStdErr = true );

    // async run
    bool start( bool enableStdOut = true, bool enableStdErr = true );
    void cleanUpAfterRun();
    void terminate();
    void notifyErrorFinish();
    void writeToStdIn( QStringList stdIn );
    bool isRunning();

    const QStringList& stdErr() const;
    const QStringList& stdOut() const;

    void appendStdOut( QString line );
    void appendStdErr( QString line );

protected:
    caf::PdmFieldHandle* userDescriptionField() override;

private:
    QString optionalCommandInterpreter() const;
    QString optionalPreParameters() const;
    QString handleSpaces( QString argument ) const;

    bool isWindowsBatchFile() const;

    caf::PdmField<QString>       m_command;
    QStringList                  m_arguments;
    caf::PdmField<QString>       m_description;
    caf::PdmField<size_t>        m_id;
    caf::PdmField<caf::FilePath> m_workDir;

    std::vector<std::pair<QString, QString>> m_environmentVariables;

    static std::atomic<size_t>         m_nextProcessId;
    std::shared_ptr<RimProcessMonitor> m_monitor;
    bool                               m_enableLogging;
    QPointer<QProcess>                 m_qProcess;
    QStringList                        m_emptyList;
    RiaWslTools::WslOptions            m_wslOptions;
};