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#pragma once

#include "languageclient_global.h"

#include <languageserverprotocol/languagefeatures.h>
#include <texteditor/basehoverhandler.h>

#include <functional>

namespace LanguageClient {

class Client;

using HelpItemProvider = std::function<void(const LanguageServerProtocol::HoverRequest::Response &,
                                            const LanguageServerProtocol::DocumentUri &uri)>;

class LANGUAGECLIENT_EXPORT HoverHandler final : public TextEditor::BaseHoverHandler
{
    Q_DECLARE_TR_FUNCTIONS(HoverHandler)
public:
    explicit HoverHandler(Client *client);
    ~HoverHandler() override;

    void abort() override;

    void setHelpItemProvider(const HelpItemProvider &provider) { m_helpItemProvider = provider; }
    void setHelpItem(const LanguageServerProtocol::MessageId &msgId, const Core::HelpItem &help);

protected:
    void identifyMatch(TextEditor::TextEditorWidget *editorWidget,
                       int pos,
                       ReportPriority report) override;

private:
    void handleResponse(const LanguageServerProtocol::HoverRequest::Response &response);
    void setContent(const LanguageServerProtocol::HoverContent &content);

    QPointer<Client> m_client;
    Utils::optional<LanguageServerProtocol::MessageId> m_currentRequest;
    LanguageServerProtocol::DocumentUri m_uri;
    LanguageServerProtocol::HoverRequest::Response m_response;
    TextEditor::BaseHoverHandler::ReportPriority m_report;
    HelpItemProvider m_helpItemProvider;
};

} // namespace LanguageClient
