/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/

#include "qmlproject.h"
#include "qmlprojectfile.h"
#include "qmlprojectmanagerconstants.h"
#include "fileformat/qmlprojectitem.h"
#include "qmlprojectrunconfiguration.h"

#include <coreplugin/icore.h>
#include <coreplugin/messagemanager.h>
#include <extensionsystem/pluginmanager.h>
#include <projectexplorer/filewatcher.h>
#include <qt4projectmanager/qmldumptool.h>
#include <qt4projectmanager/qtversionmanager.h>
#include <qmljs/qmljsmodelmanagerinterface.h>

#include <QTextStream>
#include <QDeclarativeComponent>
#include <QtDebug>

namespace QmlProjectManager {

QmlProject::QmlProject(Internal::Manager *manager, const QString &fileName)
    : m_manager(manager),
      m_fileName(fileName),
      m_modelManager(ExtensionSystem::PluginManager::instance()->getObject<QmlJS::ModelManagerInterface>()),
      m_fileWatcher(new ProjectExplorer::FileWatcher(this)),
      m_targetFactory(new Internal::QmlProjectTargetFactory(this))
{
    setSupportedTargetIds(QSet<QString>() << QLatin1String(Constants::QML_VIEWER_TARGET_ID));
    QFileInfo fileInfo(m_fileName);
    m_projectName = fileInfo.completeBaseName();

    m_file = new Internal::QmlProjectFile(this, fileName);
    m_rootNode = new Internal::QmlProjectNode(this, m_file);

    m_fileWatcher->addFile(fileName),
    connect(m_fileWatcher, SIGNAL(fileChanged(QString)),
            this, SLOT(refreshProjectFile()));

    m_manager->registerProject(this);
}

QmlProject::~QmlProject()
{
    m_manager->unregisterProject(this);

    delete m_projectItem.data();
    delete m_rootNode;
}

QDir QmlProject::projectDir() const
{
    return QFileInfo(file()->fileName()).dir();
}

QString QmlProject::filesFileName() const
{ return m_fileName; }

void QmlProject::parseProject(RefreshOptions options)
{
    if (options & Files) {
        if (options & ProjectFile)
            delete m_projectItem.data();
        if (!m_projectItem) {
            QFile file(m_fileName);
            if (file.open(QFile::ReadOnly)) {
                QDeclarativeComponent *component = new QDeclarativeComponent(&m_engine, this);
                component->setData(file.readAll(), QUrl::fromLocalFile(m_fileName));
                if (component->isReady()
                    && qobject_cast<QmlProjectItem*>(component->create())) {
                    m_projectItem = qobject_cast<QmlProjectItem*>(component->create());
                    connect(m_projectItem.data(), SIGNAL(qmlFilesChanged(QSet<QString>, QSet<QString>)),
                            this, SLOT(refreshFiles(QSet<QString>, QSet<QString>)));
                } else {
                    Core::MessageManager *messageManager = Core::ICore::instance()->messageManager();
                    messageManager->printToOutputPane(tr("Error while loading project file!"));
                    messageManager->printToOutputPane(component->errorString(), true);
                }
            }
        }
        if (m_projectItem) {
            m_projectItem.data()->setSourceDirectory(projectDir().path());
            m_modelManager->updateSourceFiles(m_projectItem.data()->files(), true);
        }
        m_rootNode->refresh();
    }

    if (options & Configuration) {
        // update configuration
    }

    if (options & Files)
        emit fileListChanged();
}

void QmlProject::refresh(RefreshOptions options)
{
    parseProject(options);

    if (options & Files)
        m_rootNode->refresh();

    QmlJS::ModelManagerInterface::ProjectInfo pinfo(this);
    pinfo.sourceFiles = files();
    pinfo.importPaths = importPaths();
    Qt4ProjectManager::QmlDumpTool::pathAndEnvironment(this, &pinfo.qmlDumpPath, &pinfo.qmlDumpEnvironment);
    m_modelManager->updateProjectInfo(pinfo);
}

QStringList QmlProject::convertToAbsoluteFiles(const QStringList &paths) const
{
    const QDir projectDir(QFileInfo(m_fileName).dir());
    QStringList absolutePaths;
    foreach (const QString &file, paths) {
        QFileInfo fileInfo(projectDir, file);
        absolutePaths.append(fileInfo.absoluteFilePath());
    }
    absolutePaths.removeDuplicates();
    return absolutePaths;
}

QStringList QmlProject::files() const
{
    QStringList files;
    if (m_projectItem) {
        files = m_projectItem.data()->files();
    } else {
        files = m_files;
    }
    return files;
}

bool QmlProject::validProjectFile() const
{
    return !m_projectItem.isNull();
}

QStringList QmlProject::importPaths() const
{
    QStringList importPaths;
    if (m_projectItem)
        importPaths = m_projectItem.data()->importPaths();

    // add the default import path for the target Qt version
    if (activeTarget()) {
        const QmlProjectRunConfiguration *runConfig =
                qobject_cast<QmlProjectRunConfiguration*>(activeTarget()->activeRunConfiguration());
        if (runConfig) {
            const Qt4ProjectManager::QtVersion *qtVersion = runConfig->qtVersion();
            if (qtVersion && qtVersion->isValid()) {
                const QString qtVersionImportPath = qtVersion->versionInfo().value("QT_INSTALL_IMPORTS");
                if (!qtVersionImportPath.isEmpty())
                    importPaths += qtVersionImportPath;
            }
        }
    }

    return importPaths;
}

bool QmlProject::addFiles(const QStringList &filePaths)
{
    QStringList toAdd;
    foreach (const QString &filePath, filePaths) {
        if (!m_projectItem.data()->matchesFile(filePath))
            toAdd << filePaths;
    }
    return toAdd.isEmpty();
}

void QmlProject::refreshProjectFile()
{
    refresh(QmlProject::ProjectFile | Files);
}

void QmlProject::refreshFiles(const QSet<QString> &/*added*/, const QSet<QString> &removed)
{
    refresh(Files);
    if (!removed.isEmpty())
        m_modelManager->removeFiles(removed.toList());
}

QString QmlProject::displayName() const
{
    return m_projectName;
}

QString QmlProject::id() const
{
    return QLatin1String("QmlProjectManager.QmlProject");
}

Core::IFile *QmlProject::file() const
{
    return m_file;
}

Internal::Manager *QmlProject::projectManager() const
{
    return m_manager;
}

QList<ProjectExplorer::Project *> QmlProject::dependsOn()
{
    return QList<Project *>();
}

ProjectExplorer::BuildConfigWidget *QmlProject::createConfigWidget()
{
    return 0;
}

QList<ProjectExplorer::BuildConfigWidget*> QmlProject::subConfigWidgets()
{
    return QList<ProjectExplorer::BuildConfigWidget*>();
}

Internal::QmlProjectTargetFactory *QmlProject::targetFactory() const
{
    return m_targetFactory;
}

Internal::QmlProjectTarget *QmlProject::activeTarget() const
{
    return static_cast<Internal::QmlProjectTarget *>(Project::activeTarget());
}

Internal::QmlProjectNode *QmlProject::rootProjectNode() const
{
    return m_rootNode;
}

QStringList QmlProject::files(FilesMode) const
{
    return files();
}

bool QmlProject::fromMap(const QVariantMap &map)
{
    if (!Project::fromMap(map))
        return false;

    if (targets().isEmpty()) {
        Internal::QmlProjectTarget *target(targetFactory()->create(this, QLatin1String(Constants::QML_VIEWER_TARGET_ID)));
        addTarget(target);
    }

    refresh(Everything);
    // FIXME workaround to guarantee that run/debug actions are enabled if a valid file exists
    QmlProjectRunConfiguration *runConfig = qobject_cast<QmlProjectRunConfiguration*>(activeTarget()->activeRunConfiguration());
    if (runConfig)
        runConfig->changeCurrentFile(0);

    return true;
}

} // namespace QmlProjectManager