/* 
 * 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/>.
 */

#include "MessageBuilder.hpp"

QodeAssist::LLMCore::MessageBuilder &QodeAssist::LLMCore::MessageBuilder::addSystemMessage(
    const QString &content)
{
    m_systemMessage = content;
    return *this;
}

QodeAssist::LLMCore::MessageBuilder &QodeAssist::LLMCore::MessageBuilder::addUserMessage(
    const QString &content)
{
    m_messages.append({MessageRole::User, content});
    return *this;
}

QodeAssist::LLMCore::MessageBuilder &QodeAssist::LLMCore::MessageBuilder::addSuffix(
    const QString &content)
{
    m_suffix = content;
    return *this;
}

QodeAssist::LLMCore::MessageBuilder &QodeAssist::LLMCore::MessageBuilder::addTokenizer(
    PromptTemplate *promptTemplate)
{
    m_promptTemplate = promptTemplate;
    return *this;
}

QString QodeAssist::LLMCore::MessageBuilder::roleToString(MessageRole role) const
{
    switch (role) {
    case MessageRole::System:
        return ROLE_SYSTEM;
    case MessageRole::User:
        return ROLE_USER;
    case MessageRole::Assistant:
        return ROLE_ASSISTANT;
    default:
        return ROLE_USER;
    }
}

void QodeAssist::LLMCore::MessageBuilder::saveTo(QJsonObject &request, ProvidersApi api)
{
    if (!m_promptTemplate) {
        return;
    }

    ContextData context{
        m_messages.isEmpty() ? QString() : m_messages.last().content, m_suffix, m_systemMessage};

    if (api == ProvidersApi::Ollama) {
        if (m_promptTemplate->type() == TemplateType::Fim) {
            request["system"] = m_systemMessage;
            m_promptTemplate->prepareRequest(request, context);
        } else {
            QJsonArray messages;

            messages.append(QJsonObject{{"role", "system"}, {"content", m_systemMessage}});
            messages.append(QJsonObject{{"role", "user"}, {"content", m_messages.last().content}});
            request["messages"] = messages;
            m_promptTemplate->prepareRequest(request, context);
        }
    } else if (api == ProvidersApi::OpenAI) {
        QJsonArray messages;

        messages.append(QJsonObject{{"role", "system"}, {"content", m_systemMessage}});
        messages.append(QJsonObject{{"role", "user"}, {"content", m_messages.last().content}});
        request["messages"] = messages;
        m_promptTemplate->prepareRequest(request, context);
    }
}