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**
** Copyright (C) 2016 The Qt Company Ltd.
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**
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** accordance with the commercial license agreement provided with the
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** 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
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#pragma once

#include "pchcreatorinterface.h"

#include "pchgeneratorinterface.h"
#include "stringcache.h"
#include "idpaths.h"

#include <projectpartpch.h>
#include <projectpartcontainerv2.h>

#include <vector>

QT_FORWARD_DECLARE_CLASS(QFile)
QT_FORWARD_DECLARE_CLASS(QCryptographicHash)
QT_FORWARD_DECLARE_CLASS(QProcess)

namespace ClangBackEnd {

class Environment;

class PchCreator final : public PchCreatorInterface
{
public:
    PchCreator(Environment &environment,
               FilePathCache<> &filePathCache);
    PchCreator(V2::ProjectPartContainers &&projectsParts,
               Environment &environment,
               FilePathCache<> &filePathCache,
               PchGeneratorInterface *pchGenerator,
               V2::FileContainers &&generatedFiles);

    void generatePchs(V2::ProjectPartContainers &&projectsParts) override;
    void setGeneratedFiles(V2::FileContainers &&generatedFiles) override;
    std::vector<IdPaths> takeProjectsIncludes() override;

    void setGenerator(PchGeneratorInterface *pchGenerator);

unittest_public:
    Utils::PathStringVector generateGlobalHeaderPaths() const;
    Utils::PathStringVector generateGlobalSourcePaths() const;
    Utils::PathStringVector generateGlobalHeaderAndSourcePaths() const;
    Utils::SmallStringVector generateGlobalArguments() const;
    Utils::SmallStringVector generateGlobalCommandLine() const;
    Utils::SmallStringVector generateGlobalPchCompilerArguments() const;
    Utils::SmallStringVector generateGlobalClangCompilerArguments() const;

    std::vector<FilePathIndex> generateGlobalPchIncludeIds() const;

    Utils::SmallString generatePchIncludeFileContent(const std::vector<FilePathIndex> &includeIds) const;
    Utils::SmallString generateGlobalPchHeaderFileContent() const;
    std::unique_ptr<QFile> generateGlobalPchHeaderFile();
    void generatePch(Utils::SmallStringVector &&commandLineArguments,
                     ProjectPartPch &&projectPartPch);
    void generateGlobalPch();

    Utils::SmallString globalPchContent() const;

    static QStringList convertToQStringList(const Utils::SmallStringVector &convertToQStringList);

    Utils::SmallString generateGlobalPchFilePathWithoutExtension() const;
    Utils::SmallString generateGlobalPchHeaderFilePath() const;
    Utils::SmallString generateGlobalPchFilePath() const;

    Utils::SmallStringVector generateProjectPartCommandLine(
            const V2::ProjectPartContainer &projectPart) const;
    Utils::SmallString generateProjectPartPchFilePathWithoutExtension(
            const V2::ProjectPartContainer &projectPart) const;
    Utils::PathStringVector generateProjectPartHeaders(
            const V2::ProjectPartContainer &projectPart) const;
    static Utils::SmallString generateProjectPartHeaderAndSourcesContent(
            const V2::ProjectPartContainer &projectPart);
    static Utils::PathStringVector generateProjectPartHeaderAndSourcePaths(
            const V2::ProjectPartContainer &projectPart);
    std::vector<FilePathIndex> generateProjectPartPchIncludes(
            const V2::ProjectPartContainer &projectPart) const;
    Utils::SmallString generateProjectPathPchHeaderFilePath(
            const V2::ProjectPartContainer &projectPart) const;
    Utils::SmallString  generateProjectPartPchFilePath(
           const V2::ProjectPartContainer &projectPart) const;
    Utils::SmallString  generateProjectPartSourceFilePath(
           const V2::ProjectPartContainer &projectPart) const;
    Utils::SmallStringVector generateProjectPartPchCompilerArguments(
            const V2::ProjectPartContainer &projectPart) const;
    Utils::SmallStringVector generateProjectPartClangCompilerArguments(
             const V2::ProjectPartContainer &projectPart) const;
    IdPaths generateProjectPartPch(
            const V2::ProjectPartContainer &projectPart);
    static std::unique_ptr<QFile> generateFileWithContent(
            const Utils::SmallString &filePath,
            const Utils::SmallString &content);

    void generatePchs();

private:
    static QByteArray projectPartHash(const V2::ProjectPartContainer &projectPart);
    QByteArray globalProjectHash() const;

private:
    V2::ProjectPartContainers m_projectParts;
    V2::FileContainers m_generatedFiles;
    std::vector<ProjectPartPch> m_projectPartPchs;
    std::vector<IdPaths> m_projectsIncludeIds;
    Environment &m_environment;
    FilePathCache<> &m_filePathCache;
    PchGeneratorInterface *m_pchGenerator = nullptr;
};

} // namespace ClangBackEnd