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#pragma once

#include <cpptools/cppcodemodelsettings.h>
#include <cpptools/refactoringengineinterface.h>
#include <languageclient/client.h>
#include <utils/link.h>
#include <utils/optional.h>

#include <QVersionNumber>

namespace Core { class SearchResultItem; }
namespace CppTools { class CppEditorWidgetInterface; }
namespace ProjectExplorer { class Project; }
namespace TextEditor { class BaseTextEditor; }

namespace ClangCodeModel {
namespace Internal {

class ClangdClient : public LanguageClient::Client
{
    Q_OBJECT
public:
    ClangdClient(ProjectExplorer::Project *project, const Utils::FilePath &jsonDbDir);
    ~ClangdClient() override;

    bool isFullyIndexed() const;
    QVersionNumber versionNumber() const;
    CppTools::ClangdSettings::Data settingsData() const;

    void openEditorDocument(TextEditor::BaseTextEditor *editor);

    void openExtraFile(const Utils::FilePath &filePath, const QString &content = {});
    void closeExtraFile(const Utils::FilePath &filePath);

    void findUsages(TextEditor::TextDocument *document, const QTextCursor &cursor,
                    const Utils::optional<QString> &replacement);
    void followSymbol(TextEditor::TextDocument *document,
            const QTextCursor &cursor,
            CppTools::CppEditorWidgetInterface *editorWidget,
            Utils::ProcessLinkCallback &&callback,
            bool resolveTarget,
            bool openInSplit);

    void switchDeclDef(TextEditor::TextDocument *document,
            const QTextCursor &cursor,
            CppTools::CppEditorWidgetInterface *editorWidget,
            Utils::ProcessLinkCallback &&callback);

    void findLocalUsages(TextEditor::TextDocument *document, const QTextCursor &cursor,
                         CppTools::RefactoringEngineInterface::RenameCallback &&callback);

    void gatherHelpItemForTooltip(
            const LanguageServerProtocol::HoverRequest::Response &hoverResponse,
            const LanguageServerProtocol::DocumentUri &uri);

    void enableTesting();

signals:
    void indexingFinished();
    void foundReferences(const QList<Core::SearchResultItem> &items);
    void findUsagesDone();
    void helpItemGathered(const Core::HelpItem &helpItem);
    void highlightingResultsReady(const TextEditor::HighlightingResults &results,
                                  const Utils::FilePath &file);
    void proposalReady(TextEditor::IAssistProposal *proposal);

private:
    void handleDiagnostics(const LanguageServerProtocol::PublishDiagnosticsParams &params) override;
    void handleDocumentClosed(TextEditor::TextDocument *doc) override;

    class Private;
    class FollowSymbolData;
    class VirtualFunctionAssistProcessor;
    class VirtualFunctionAssistProvider;
    Private * const d;
};

class ClangdDiagnostic : public LanguageServerProtocol::Diagnostic
{
public:
    using Diagnostic::Diagnostic;
    Utils::optional<QList<LanguageServerProtocol::CodeAction>> codeActions() const;
    QString category() const;
};

} // namespace Internal
} // namespace ClangCodeModel