/*
* 86Box	A hypervisor and IBM PC system emulator that specializes in
*		running old operating systems and software designed for IBM
*		PC systems and compatibles from 1981 through fairly recent
*		system designs based on the PCI bus.
*
*		This file is part of the 86Box distribution.
*
*		86Box VM manager protocol module
*
*
*
* Authors:	cold-brewed
*
*		Copyright 2024 cold-brewed
 */

#include "qt_vmmanager_protocol.hpp"
#include <QJsonDocument>
#include <QMetaEnum>
VMManagerProtocol::VMManagerProtocol(VMManagerProtocol::Sender sender)
{
    message_class = sender;
}

VMManagerProtocol::~VMManagerProtocol()
= default;

QJsonObject
VMManagerProtocol::protocolManagerMessage(VMManagerProtocol::ManagerMessage message_type)
{
    auto json_message = constructDefaultObject(VMManagerProtocol::Sender::Manager);
    json_message["message"] = managerMessageTypeToString(message_type);
    return json_message;
}

QJsonObject
VMManagerProtocol::protocolClientMessage(VMManagerProtocol::ClientMessage message_type)
{
    auto json_message = constructDefaultObject(VMManagerProtocol::Sender::Client);
    json_message["message"] = clientMessageTypeToString(message_type);
    return json_message;
}

QString
VMManagerProtocol::managerMessageTypeToString(VMManagerProtocol::ManagerMessage message)
{
    QMetaEnum qme = QMetaEnum::fromType<VMManagerProtocol::ManagerMessage>();
    return qme.valueToKey(static_cast<int>(message));
}

QString
VMManagerProtocol::clientMessageTypeToString(VMManagerProtocol::ClientMessage message)
{
    QMetaEnum qme = QMetaEnum::fromType<VMManagerProtocol::ClientMessage>();
    return qme.valueToKey(static_cast<int>(message));
}

QJsonObject
VMManagerProtocol::constructDefaultObject(VMManagerProtocol::Sender type)
{
    QJsonObject json_message;
    QString sender_type = ( type == VMManagerProtocol::Sender::Client ) ? "Client" : "VMManager";
    json_message["type"] = QString(sender_type);
    json_message["version"] = QStringLiteral(EMU_VERSION);
    return json_message;
}
bool
VMManagerProtocol::hasRequiredFields(const QJsonObject& json_document)
{
    for (const auto& field : ProtocolRequiredFields) {
        if (!json_document.contains(field)) {
            qDebug("Received json missing field \"%s\"", qPrintable(field));
            return false;
        }
    }
    return true;
}
VMManagerProtocol::ClientMessage
VMManagerProtocol::getClientMessageType(const QJsonObject &json_document)
{
    // FIXME: This key ("message") is hardcoded here. Make a hash which maps these
    // required values.
    QString message_type = json_document.value("message").toString();
    // Can't use switch with strings, manual compare
    if (message_type == "Status") {
        return VMManagerProtocol::ClientMessage::Status;
    } else if (message_type == "WindowBlocked") {
        return VMManagerProtocol::ClientMessage::WindowBlocked;
    } else if (message_type == "WindowUnblocked") {
        return VMManagerProtocol::ClientMessage::WindowUnblocked;
    } else if (message_type == "RunningStateChanged") {
        return VMManagerProtocol::ClientMessage::RunningStateChanged;
    }
    return VMManagerProtocol::ClientMessage::UnknownMessage;
}
VMManagerProtocol::ManagerMessage
VMManagerProtocol::getManagerMessageType(const QJsonObject &json_document)
{
    // FIXME: This key ("message") is hardcoded here. Make a hash which maps these
    // required values.
    QString message_type = json_document.value("message").toString();
    // Can't use switch with strings, manual compare
    if (message_type == "RequestStatus") {
        return VMManagerProtocol::ManagerMessage::RequestStatus;
    } else if (message_type == "Pause") {
        return VMManagerProtocol::ManagerMessage::Pause;
    } if (message_type == "CtrlAltDel") {
        return VMManagerProtocol::ManagerMessage::CtrlAltDel;
    } if (message_type == "ShowSettings") {
        return VMManagerProtocol::ManagerMessage::ShowSettings;
    } if (message_type == "ResetVM") {
        return VMManagerProtocol::ManagerMessage::ResetVM;
    } if (message_type == "RequestShutdown") {
        return VMManagerProtocol::ManagerMessage::RequestShutdown;
    } if (message_type == "ForceShutdown") {
        return VMManagerProtocol::ManagerMessage::ForceShutdown;
    }
    return VMManagerProtocol::ManagerMessage::UnknownMessage;
}
QJsonObject
VMManagerProtocol::getParams(const QJsonObject &json_document)
{
    // FIXME: This key ("params") is hardcoded here. Make a hash which maps these
    // required values.
    auto params_object = json_document.value("params");
    if (params_object.type() != QJsonValue::Object) {
        return {};
    }
    return params_object.toObject();
}