/////////////////////////////////////////////////////////////////////////////////
//
//  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.
//
/////////////////////////////////////////////////////////////////////////////////

#include "RimProcessMonitor.h"

#include "RiaLogging.h"

#include "RimProcessQueue.h"

#include <QProcess>
#include <QtCore/QtCore>

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
RimProcessMonitor::RimProcessMonitor( size_t processId, bool logStdOutErr /*true*/ )
    : QObject( nullptr )
    , m_processId( processId )
    , m_logStdOutErr( logStdOutErr )
{
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
QString RimProcessMonitor::addPrefix( QString message )
{
    return QString( "Process %1: %2" ).arg( m_processId ).arg( message );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::error( QProcess::ProcessError error )
{
    QString errorStr;

    switch ( error )
    {
        case QProcess::FailedToStart:
            errorStr = "Failed to start";
            break;
        case QProcess::Crashed:
            errorStr = "Crashed";
            break;
        case QProcess::Timedout:
            errorStr = "Timed out";
            break;
        case QProcess::ReadError:
            errorStr = "Read error";
            break;
        case QProcess::WriteError:
            errorStr = "Write error";
            break;
        case QProcess::UnknownError:
        default:
            errorStr = "Unknown";
            break;
    }

    RiaLogging::error( addPrefix( errorStr ).toStdString() );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::finished( int exitCode, QProcess::ExitStatus exitStatus )
{
    if ( m_logStdOutErr )
    {
        QString finishStr;
        switch ( exitStatus )
        {
            case QProcess::NormalExit:
                finishStr = QString( "Normal exit, code %1" ).arg( exitCode );
                break;
            case QProcess::CrashExit:
            default:
                finishStr = QString( "Crash exit, code %1" ).arg( exitCode );
                break;
        }
        RiaLogging::debug( addPrefix( finishStr ).toStdString() );
    }

    RimProcessQueue::onProcessFinished( m_processId );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::readyReadStandardError()
{
    if ( QProcess* p = qobject_cast<QProcess*>( sender() ) )
    {
        p->setReadChannel( QProcess::StandardError );
        while ( p->canReadLine() )
        {
            QString line = p->readLine();
            line         = line.trimmed();
            if ( line.size() == 0 ) continue;
            m_stdErr.append( line );
            if ( m_logStdOutErr )
            {
                RiaLogging::error( addPrefix( line ).toStdString() );
            }
        }
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::readyReadStandardOutput()
{
    if ( QProcess* p = qobject_cast<QProcess*>( sender() ) )
    {
        p->setReadChannel( QProcess::StandardOutput );
        while ( p->canReadLine() )
        {
            QString line = p->readLine();
            line         = line.trimmed();
            if ( line.size() == 0 ) continue;
            m_stdOut.append( line );
            if ( m_logStdOutErr )
            {
                RiaLogging::info( addPrefix( line ).toStdString() );
            }
        }
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::started()
{
    if ( m_logStdOutErr ) RiaLogging::debug( addPrefix( "Started" ).toStdString() );
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::clearStdOutErr()
{
    m_stdOut.clear();
    m_stdErr.clear();
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
const QStringList& RimProcessMonitor::stdOut() const
{
    return m_stdOut;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
const QStringList& RimProcessMonitor::stdErr() const
{
    return m_stdErr;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::setProcessId( size_t processId )
{
    m_processId = processId;
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::appendStdOut( QString line )
{
    m_stdOut.append( line );
    if ( m_logStdOutErr )
    {
        RiaLogging::info( addPrefix( line ).toStdString() );
    }
}

//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
void RimProcessMonitor::appendStdErr( QString line )
{
    m_stdErr.append( line );
    if ( m_logStdOutErr )
    {
        RiaLogging::error( addPrefix( line ).toStdString() );
    }
}