/* Device Connection Class Implementation
 *
 * Copyright (c) 2020 The OSCAR Team
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file COPYING in the main directory of the source code
 * for more details. */

#include "deviceconnection.h"
#include <QtSerialPort/QSerialPortInfo>
#include <QDebug>


static QString hex(int i)
{
    return QString("0x") + QString::number(i, 16).toUpper();
}


// MARK: -

SerialPortInfo::SerialPortInfo(const QSerialPortInfo & other)
{
    if (other.isNull() == false) {
        m_info["portName"] = other.portName();
        m_info["systemLocation"] = other.systemLocation();
        m_info["description"] = other.description();
        m_info["manufacturer"] = other.manufacturer();
        m_info["serialNumber"] = other.serialNumber();
        if (other.hasVendorIdentifier()) {
            m_info["vendorIdentifier"] = other.vendorIdentifier();
        }
        if (other.hasProductIdentifier()) {
            m_info["productIdentifier"] = other.productIdentifier();
        }
    }
}

SerialPortInfo::SerialPortInfo(const SerialPortInfo & other)
    : m_info(other.m_info)
{
}

SerialPortInfo::SerialPortInfo(const QString & data)
{
    QXmlStreamReader xml(data);
    xml.readNextStartElement();
    xml >> *this;
}

QList<SerialPortInfo> SerialPortInfo::availablePorts()
{
    // TODO: internal state when in record or playback mode

    QList<SerialPortInfo> out;
    for (auto & info : QSerialPortInfo::availablePorts()) {
        SerialPortInfo portInfo(info);
        qDebug().noquote() << portInfo;
        out.append(portInfo);
    }
    return out;
}

QXmlStreamWriter & operator<<(QXmlStreamWriter & xml, const SerialPortInfo & info)
{
    xml.writeStartElement("serial");
    if (info.isNull() == false) {
        xml.writeAttribute("portName", info.portName());
        xml.writeAttribute("systemLocation", info.systemLocation());
        xml.writeAttribute("description", info.description());
        xml.writeAttribute("manufacturer", info.manufacturer());
        xml.writeAttribute("serialNumber", info.serialNumber());
        if (info.hasVendorIdentifier()) {
            xml.writeAttribute("vendorIdentifier", hex(info.vendorIdentifier()));
        }
        if (info.hasProductIdentifier()) {
            xml.writeAttribute("productIdentifier", hex(info.productIdentifier()));
        }
    }
    xml.writeEndElement();
    return xml;
}

QXmlStreamReader & operator>>(QXmlStreamReader & xml, SerialPortInfo & info)
{
    if (xml.atEnd() == false && xml.isStartElement() && xml.name() == "serial") {
        for (auto & attribute : xml.attributes()) {
            QString name = attribute.name().toString();
            QString value = attribute.value().toString();
            if (name == "vendorIdentifier" || name == "productIdentifier") {
                bool ok;
                quint16 id = value.toUInt(&ok, 0);
                if (ok) {
                    info.m_info[name] = id;
                } else {
                    qWarning() << "invalid" << name << "value" << value;
                }
            } else {
                info.m_info[name] = value;
            }
        }
    } else {
        qWarning() << "no <serial> tag";
    }
    xml.readNext();
    return xml;
}

SerialPortInfo::operator QString() const
{
    QString out;
    QXmlStreamWriter xml(&out);
    xml << *this;
    return out;
}