/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
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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 "clangeditordocumentparser.h"

#include <clangsupport/sourcerangecontainer.h>

#include <cppeditor/builtineditordocumentprocessor.h>

#include <utils/futuresynchronizer.h>
#include <utils/id.h>

#include <QFutureWatcher>
#include <QTimer>

namespace ClangBackEnd {
class DiagnosticContainer;
class TokenInfoContainer;
class FileContainer;
}

namespace ClangCodeModel {
namespace Internal {

class BackendCommunicator;

class ClangEditorDocumentProcessor : public CppEditor::BaseEditorDocumentProcessor
{
    Q_OBJECT

public:
    ClangEditorDocumentProcessor(BackendCommunicator &communicator,
                                 TextEditor::TextDocument *document);
    ~ClangEditorDocumentProcessor() override;

    // BaseEditorDocumentProcessor interface
    void runImpl(const CppEditor::BaseEditorDocumentParser::UpdateParams &updateParams) override;
    void semanticRehighlight() override;
    void recalculateSemanticInfoDetached(bool force) override;
    CppEditor::SemanticInfo recalculateSemanticInfo() override;
    CppEditor::BaseEditorDocumentParser::Ptr parser() override;
    CPlusPlus::Snapshot snapshot() override;
    bool isParserRunning() const override;

    bool hasProjectPart() const;
    CppEditor::ProjectPart::ConstPtr projectPart() const;
    void clearProjectPart();

    ::Utils::Id diagnosticConfigId() const;

    void editorDocumentTimerRestarted() override;

    void setParserConfig(const CppEditor::BaseEditorDocumentParser::Configuration &config) override;
    CppEditor::BaseEditorDocumentParser::Configuration parserConfig() const;

    QFuture<CppEditor::CursorInfo> cursorInfo(const CppEditor::CursorInfoParams &params) override;

    void closeBackendDocument();

public:
    static ClangEditorDocumentProcessor *get(const QString &filePath);

signals:
    void parserConfigChanged(const Utils::FilePath &filePath,
                             const CppEditor::BaseEditorDocumentParser::Configuration &config);

private:
    void onParserFinished();

    void updateBackendProjectPartAndDocument();
    void updateBackendDocument(const CppEditor::ProjectPart &projectPart);
    void updateBackendDocumentIfProjectPartExists();

    ClangBackEnd::FileContainer simpleFileContainer(const QByteArray &codecName = QByteArray()) const;
    ClangBackEnd::FileContainer fileContainerWithOptionsAndDocumentContent(
        const QStringList &compilationArguments,
        const ProjectExplorer::HeaderPaths headerPaths) const;
    ClangBackEnd::FileContainer fileContainerWithDocumentContent() const;

private:
    TextEditor::TextDocument &m_document;
    BackendCommunicator &m_communicator;
    QSharedPointer<ClangEditorDocumentParser> m_parser;
    CppEditor::ProjectPart::ConstPtr m_projectPart;
    ::Utils::Id m_diagnosticConfigId;
    bool m_isProjectFile = false;
    QFutureWatcher<void> m_parserWatcher;
    QTimer m_updateBackendDocumentTimer;
    unsigned m_parserRevision;
    enum class InvalidationState { Off, Scheduled, Canceled } m_invalidationState;

    CppEditor::BuiltinEditorDocumentProcessor m_builtinProcessor;
    Utils::FutureSynchronizer m_parserSynchronizer;
};

} // namespace Internal
} // namespace ClangCodeModel