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** Copyright (C) 2016 The Qt Company Ltd.
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**
** This file is part of Qbs.
**
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** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
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****************************************************************************/

#include "jsextensions.h"

#include <QtCore/qmap.h>
#include <QtScript/qscriptengine.h>

#include <utility>

using InitializerMap = QMap<QString, void (*)(QScriptValue)>;
static InitializerMap setupMap()
{
#define INITIALIZER_NAME(name) initializeJsExtension##name
#define ADD_JS_EXTENSION(name) \
    void INITIALIZER_NAME(name)(QScriptValue); \
    map.insert(QStringLiteral(#name), &INITIALIZER_NAME(name))

    InitializerMap map;
    ADD_JS_EXTENSION(BinaryFile);
    ADD_JS_EXTENSION(Environment);
    ADD_JS_EXTENSION(File);
    ADD_JS_EXTENSION(FileInfo);
    ADD_JS_EXTENSION(Host);
    ADD_JS_EXTENSION(PkgConfig);
    ADD_JS_EXTENSION(Process);
    ADD_JS_EXTENSION(PropertyList);
    ADD_JS_EXTENSION(TemporaryDir);
    ADD_JS_EXTENSION(TextFile);
    ADD_JS_EXTENSION(Utilities);
    ADD_JS_EXTENSION(Xml);
    return map;
}

namespace qbs {
namespace Internal {

static InitializerMap &initializers()
{
    static InitializerMap theMap = setupMap();
    return theMap;
}

void JsExtensions::setupExtensions(const QStringList &names, const QScriptValue &scope)
{
    for (const QString &name : names)
        initializers().value(name)(scope);
}

QScriptValue JsExtensions::loadExtension(QScriptEngine *engine, const QString &name)
{
    if (!hasExtension(name))
        return {};

    QScriptValue extensionObj = engine->newObject();
    initializers().value(name)(extensionObj);
    return extensionObj.property(name);
}

bool JsExtensions::hasExtension(const QString &name)
{
    return initializers().contains(name);
}

QStringList JsExtensions::extensionNames()
{
    return initializers().keys();
}

} // namespace Internal
} // namespace qbs
