/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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****************************************************************************/

#include "buildsteplist.h"

#include "buildconfiguration.h"
#include "buildmanager.h"
#include "buildstep.h"
#include "deployconfiguration.h"
#include "projectexplorer.h"
#include "target.h"

#include <extensionsystem/pluginmanager.h>
#include <utils/algorithm.h>

using namespace ProjectExplorer;

namespace {

IBuildStepFactory *findCloneFactory(BuildStepList *parent, BuildStep *source)
{
    return ExtensionSystem::PluginManager::getObject<IBuildStepFactory>(
        [&parent, &source](IBuildStepFactory *factory) {
            return factory->canClone(parent, source);
        });
}

IBuildStepFactory *findRestoreFactory(BuildStepList *parent, const QVariantMap &map)
{
    return ExtensionSystem::PluginManager::getObject<IBuildStepFactory>(
        [&parent, &map](IBuildStepFactory *factory) {
            return factory->canRestore(parent, map);
        });
}

const char STEPS_COUNT_KEY[] = "ProjectExplorer.BuildStepList.StepsCount";
const char STEPS_PREFIX[] = "ProjectExplorer.BuildStepList.Step.";

} // namespace

BuildStepList::BuildStepList(QObject *parent, Core::Id id) :
    ProjectConfiguration(parent, id)
{
    Q_ASSERT(parent);
}

BuildStepList::BuildStepList(QObject *parent, BuildStepList *source) :
    ProjectConfiguration(parent, source),
    m_isNull(source->m_isNull)
{
    setDisplayName(source->displayName());
    Q_ASSERT(parent);
    // do not clone the steps here:
    // The BC is not fully set up yet and thus some of the buildstepfactories
    // will fail to clone the buildsteps!
}

BuildStepList::BuildStepList(QObject *parent, const QVariantMap &data) :
    ProjectConfiguration(parent, Core::Id())
{
    Q_ASSERT(parent);
    m_isNull = !fromMap(data);
}

BuildStepList::~BuildStepList()
{
    qDeleteAll(m_steps);
}

QVariantMap BuildStepList::toMap() const
{
    QVariantMap map(ProjectConfiguration::toMap());
    // Save build steps
    map.insert(QString::fromLatin1(STEPS_COUNT_KEY), m_steps.count());
    for (int i = 0; i < m_steps.count(); ++i)
        map.insert(QString::fromLatin1(STEPS_PREFIX) + QString::number(i), m_steps.at(i)->toMap());

    return map;
}

bool BuildStepList::isNull() const
{
    return m_isNull;
}

int BuildStepList::count() const
{
    return m_steps.count();
}

bool BuildStepList::isEmpty() const
{
    return m_steps.isEmpty();
}

bool BuildStepList::contains(Core::Id id) const
{
    return Utils::anyOf(steps(), [id](BuildStep *bs){
        return bs->id() == id;
    });
}

void BuildStepList::cloneSteps(BuildStepList *source)
{
    Q_ASSERT(source);
    foreach (BuildStep *originalbs, source->steps()) {
        IBuildStepFactory *factory(findCloneFactory(this, originalbs));
        if (!factory)
            continue;
        BuildStep *clonebs(factory->clone(this, originalbs));
        if (clonebs)
            m_steps.append(clonebs);
    }
}

bool BuildStepList::fromMap(const QVariantMap &map)
{
    // We need the ID set before trying to restore the steps!
    if (!ProjectConfiguration::fromMap(map))
        return false;

    int maxSteps = map.value(QString::fromLatin1(STEPS_COUNT_KEY), 0).toInt();
    for (int i = 0; i < maxSteps; ++i) {
        QVariantMap bsData(map.value(QString::fromLatin1(STEPS_PREFIX) + QString::number(i)).toMap());
        if (bsData.isEmpty()) {
            qWarning() << "No step data found for" << i << "(continuing).";
            continue;
        }
        IBuildStepFactory *factory = findRestoreFactory(this, bsData);
        if (!factory) {
            qWarning() << "No factory for step" << i << "in list" << displayName() << "found (continuing).";
            continue;
        }
        BuildStep *bs(factory->restore(this, bsData));
        if (!bs) {
            qWarning() << "Restoration of step" << i << "failed (continuing).";
            continue;
        }
        insertStep(m_steps.count(), bs);
    }
    return true;
}

QList<BuildStep *> BuildStepList::steps() const
{
    return m_steps;
}

QList<BuildStep *> BuildStepList::steps(const std::function<bool (const BuildStep *)> &filter) const
{
    return Utils::filtered(steps(), filter);
}

void BuildStepList::insertStep(int position, BuildStep *step)
{
    m_steps.insert(position, step);
    emit stepInserted(position);
}

bool BuildStepList::removeStep(int position)
{
    BuildStep *bs = at(position);
    if (BuildManager::isBuilding(bs))
        return false;

    emit aboutToRemoveStep(position);
    m_steps.removeAt(position);
    delete bs;
    emit stepRemoved(position);
    return true;
}

void BuildStepList::moveStepUp(int position)
{
    m_steps.swap(position - 1, position);
    emit stepMoved(position, position - 1);
}

BuildStep *BuildStepList::at(int position)
{
    return m_steps.at(position);
}

Target *BuildStepList::target() const
{
    Q_ASSERT(parent());
    auto bc = qobject_cast<BuildConfiguration *>(parent());
    if (bc)
        return bc->target();
    auto dc = qobject_cast<DeployConfiguration *>(parent());
    if (dc)
        return dc->target();
    return 0;
}
