/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qbs.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** 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
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** 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-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QBS_TRANSFORMER_H
#define QBS_TRANSFORMER_H

#include "artifact.h"
#include "forward_decls.h"
#include "requestedartifacts.h"
#include "requesteddependencies.h"
#include "rulecommands.h"
#include <language/forward_decls.h>
#include <language/language.h>
#include <language/property.h>
#include <language/scriptengine.h>
#include <tools/filetime.h>
#include <tools/persistence.h>

#include <quickjs.h>

#include <QtCore/qhash.h>

namespace qbs {
namespace Internal {
class Artifact;
class AbstractCommand;
class Rule;

class Transformer
{
public:
    static TransformerPtr create() { return TransformerPtr(new Transformer); }

    ~Transformer();

    ArtifactSet inputs; // Subset of "children of all outputs".
    ArtifactSet outputs;
    ArtifactSet explicitlyDependsOn;
    RuleConstPtr rule;
    CommandList commands;
    PropertySet propertiesRequestedInPrepareScript;
    PropertySet propertiesRequestedInCommands;
    QHash<QString, PropertySet> propertiesRequestedFromArtifactInPrepareScript;
    QHash<QString, PropertySet> propertiesRequestedFromArtifactInCommands;
    std::vector<QString> importedFilesUsedInPrepareScript;
    std::vector<QString> importedFilesUsedInCommands;
    RequestedDependencies depsRequestedInPrepareScript;
    RequestedDependencies depsRequestedInCommands;
    RequestedArtifacts artifactsMapRequestedInPrepareScript;
    RequestedArtifacts artifactsMapRequestedInCommands;
    FileTime lastPrepareScriptExecutionTime;
    FileTime lastCommandExecutionTime;
    std::unordered_map<QString, ExportedModule> exportedModulesAccessedInPrepareScript;
    std::unordered_map<QString, ExportedModule> exportedModulesAccessedInCommands;
    bool alwaysRun;
    bool prepareScriptNeedsChangeTracking = false;
    bool commandsNeedChangeTracking = false;
    bool markedForRerun = false;

    static JSValue translateFileConfig(ScriptEngine *engine, Artifact *artifact,
                                       const QString &defaultModuleName);
    ResolvedProductPtr product() const;
    void setupInputs(ScriptEngine *engine, const JSValue &targetScriptValue);
    void setupOutputs(ScriptEngine *engine, JSValue targetScriptValue);
    void setupExplicitlyDependsOn(ScriptEngine *engine, JSValue targetScriptValue);
    void createCommands(ScriptEngine *engine, const PrivateScriptFunction &script,
                        const JSValueList &args);
    void rescueChangeTrackingData(const TransformerConstPtr &other);

    Set<QString> jobPools() const;

    template<PersistentPool::OpType opType> void completeSerializationOp(PersistentPool &pool)
    {
        pool.serializationOp<opType>(rule, inputs, outputs, explicitlyDependsOn,
                                     propertiesRequestedInPrepareScript,
                                     propertiesRequestedInCommands,
                                     propertiesRequestedFromArtifactInPrepareScript,
                                     propertiesRequestedFromArtifactInCommands,
                                     importedFilesUsedInPrepareScript, importedFilesUsedInCommands,
                                     depsRequestedInPrepareScript, depsRequestedInCommands,
                                     commands, artifactsMapRequestedInPrepareScript,
                                     artifactsMapRequestedInCommands,
                                     lastPrepareScriptExecutionTime, lastCommandExecutionTime,
                                     exportedModulesAccessedInPrepareScript,
                                     exportedModulesAccessedInCommands,
                                     alwaysRun, prepareScriptNeedsChangeTracking,
                                     commandsNeedChangeTracking, markedForRerun);
    }

private:
    Transformer();
    AbstractCommandPtr createCommandFromScriptValue(ScriptEngine *engine, const JSValue &scriptValue,
                                                    const CodeLocation &codeLocation);

    static void setupInputs(ScriptEngine *engine, JSValue targetScriptValue,
                            const ArtifactSet &inputs, const QString &defaultModuleName);
    static JSValue translateInOutputs(ScriptEngine *engine, const ArtifactSet &artifacts,
                                      const QString &defaultModuleName);
};

} // namespace Internal
} // namespace qbs

#endif // QBS_TRANSFORMER_H
