/**************************************************************************
**
** This file is part of the Qt Build Suite
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file.
** Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**************************************************************************/


#include "buildexecutor.h"

#include <buildgraph/executor.h>
#include <Qbs/buildproduct.h>
#include <Qbs/buildproject.h>

namespace Qbs {

BuildExecutor::BuildExecutor()
    : m_maximumJobs(1),
      m_runOnceAndForgetModeEnabled(false),
      m_dryRun(false),
      m_keepGoing(false),
      m_state(ExecutorIdle)
{
}


void BuildExecutor::setMaximumJobs(int numberOfJobs)
{
    QWriteLocker locker(&m_lock);
    m_maximumJobs = numberOfJobs;
}

int BuildExecutor::maximumJobs() const
{
    QReadLocker locker(&m_lock);
    return m_maximumJobs;
}

void BuildExecutor::setRunOnceAndForgetModeEnabled(bool enable)
{
    QWriteLocker locker(&m_lock);
    m_runOnceAndForgetModeEnabled = enable;
}

bool BuildExecutor::runOnceAndForgetModeIsEnabled() const
{
    QReadLocker locker(&m_lock);
    return m_runOnceAndForgetModeEnabled;
}

void BuildExecutor::setDryRunEnabled(bool enable)
{
    QWriteLocker locker(&m_lock);
    m_dryRun = enable;
}

bool BuildExecutor::isDryRunEnabled() const
{
    QReadLocker locker(&m_lock);
    return m_dryRun;
}

void BuildExecutor::setKeepGoingEnabled(bool enable)
{
    QWriteLocker locker(&m_lock);
    m_keepGoing = enable;
}

bool BuildExecutor::isKeepGoingEnabled() const
{
    QReadLocker locker(&m_lock);
    return m_keepGoing;
}

void BuildExecutor::executeBuildProject(QFutureInterface<bool> &futureInterface, const BuildProject &buildProject)
{
    QList<qbs::BuildProject::Ptr> internalBuildProjects;
    internalBuildProjects.append(buildProject.internalBuildProject());
    QStringList changedFiles;   // ### populate
    QStringList selectedProductNames; // ### populate
    executeBuildProjects(futureInterface, internalBuildProjects, changedFiles, selectedProductNames);
}

/*!
  Starts the build for the given list of projects.

  Args:
  changedFiles - absolute file names of changed files (optional)
  */
void BuildExecutor::executeBuildProjects(QFutureInterface<bool> &futureInterface, const QList<QSharedPointer<qbs::BuildProject> > internalBuildProjects,
                                         QStringList changedFiles, QStringList selectedProductNames)
{
    QEventLoop eventLoop;

    m_state = ExecutorRunning;
    qbs::Executor executor(maximumJobs());
    executor.setRunOnceAndForgetModeEnabled(runOnceAndForgetModeIsEnabled());
    executor.setKeepGoing(isDryRunEnabled());
    executor.setDryRun(isDryRunEnabled());

    QObject::connect(&executor, SIGNAL(finished()), &eventLoop, SLOT(quit()), Qt::QueuedConnection);
    QObject::connect(&executor, SIGNAL(error()), &eventLoop, SLOT(quit()), Qt::QueuedConnection);

    executor.build(internalBuildProjects, changedFiles, selectedProductNames, futureInterface);

    eventLoop.exec();

    setState(static_cast<ExecutorState>(executor.state()));

    if (futureInterface.resultCount() == 0)
        futureInterface.reportResult(true);
}

BuildExecutor::ExecutorState BuildExecutor::state() const
{
    QReadLocker locker(&m_lock);
    return m_state;
}

void BuildExecutor::setState(const BuildExecutor::ExecutorState &state)
{
    QWriteLocker locker(&m_lock);
    m_state = state;
}

} // namespace Qbs