/* 
 * Copyright (C) 2024 Petr Mironychev
 *
 * This file is part of QodeAssist.
 *
 * QodeAssist is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * QodeAssist is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with QodeAssist. If not, see <https://www.gnu.org/licenses/>.
 */

#pragma once

#include <languageclient/languageclientinterface.h>
#include <texteditor/texteditor.h>

#include <context/ProgrammingLanguage.hpp>
#include <llmcore/ContextData.hpp>
#include <llmcore/RequestHandler.hpp>

class QNetworkReply;
class QNetworkAccessManager;

namespace QodeAssist {

class LLMClientInterface : public LanguageClient::BaseClientInterface
{
    Q_OBJECT

public:
    LLMClientInterface();

    Utils::FilePath serverDeviceTemplate() const override;

    void sendCompletionToClient(const QString &completion,
                                const QJsonObject &request,
                                bool isComplete);

    void handleCompletion(const QJsonObject &request);

protected:
    void startImpl() override;
    void sendData(const QByteArray &data) override;
    void parseCurrentMessage() override;

private:
    void handleInitialize(const QJsonObject &request);
    void handleShutdown(const QJsonObject &request);
    void handleTextDocumentDidOpen(const QJsonObject &request);
    void handleInitialized(const QJsonObject &request);
    void handleExit(const QJsonObject &request);
    void handleCancelRequest(const QJsonObject &request);

    LLMCore::ContextData prepareContext(
        const QJsonObject &request, const QStringView &accumulatedCompletion = QString{});
    Context::ProgrammingLanguage getDocumentLanguage(const QJsonObject &request) const;
    bool isSpecifyCompletion(const QJsonObject &request);

    LLMCore::RequestHandler m_requestHandler;
    QElapsedTimer m_completionTimer;
    QMap<QString, qint64> m_requestStartTimes;

    void startTimeMeasurement(const QString &requestId);
    void endTimeMeasurement(const QString &requestId);
    void logPerformance(const QString &requestId, const QString &operation, qint64 elapsedMs);
    QString processMessageToFIM(
        const QString &templateText, const QString &prefix, const QString &suffix);
};

} // namespace QodeAssist