/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
*  Copyright 2013 - 2020, nymea GmbH
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*  editing and translation, are reserved. The use of this project is subject to the terms of a
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*  of use of nymea GmbH, available under https://nymea.io/license
*
*  GNU General Public License Usage
*  Alternatively, this project may be redistributed and/or modified under
*  the terms of the GNU General Public License as published by the Free Software Foundation,
*  GNU version 3. this project 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.
*
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#include "tcpsocketconnection.h"

Q_LOGGING_CATEGORY(dcRemoteProxyClientTcpSocket, "RemoteProxyClientTcpSocket")

namespace remoteproxyclient {

TcpSocketConnection::TcpSocketConnection(QObject *parent) :
    ProxyConnection(parent)
{
    m_tcpSocket = new QSslSocket(this);

    QObject::connect(m_tcpSocket, &QSslSocket::disconnected, this, &TcpSocketConnection::onDisconnected);
    QObject::connect(m_tcpSocket, &QSslSocket::encrypted, this, &TcpSocketConnection::onEncrypted);
    QObject::connect(m_tcpSocket, &QSslSocket::readyRead, this, &TcpSocketConnection::onReadyRead);
    QObject::connect(m_tcpSocket, &QSslSocket::stateChanged, this, &TcpSocketConnection::onStateChanged);

    typedef void (QSslSocket:: *errorSignal)(QAbstractSocket::SocketError);
    QObject::connect(m_tcpSocket, static_cast<errorSignal>(&QSslSocket::error), this, &TcpSocketConnection::onError);

    typedef void (QSslSocket:: *sslErrorsSignal)(const QList<QSslError> &);
    QObject::connect(m_tcpSocket, static_cast<sslErrorsSignal>(&QSslSocket::sslErrors), this, &TcpSocketConnection::sslErrors);
}

TcpSocketConnection::~TcpSocketConnection()
{
    qCDebug(dcRemoteProxyClientTcpSocket()) << "Delete socket connection";
    m_tcpSocket->close();
}

void TcpSocketConnection::sendData(const QByteArray &data)
{
    m_tcpSocket->write(data);
}

void TcpSocketConnection::ignoreSslErrors()
{
    m_tcpSocket->ignoreSslErrors();
}

void TcpSocketConnection::ignoreSslErrors(const QList<QSslError> &errors)
{
    m_tcpSocket->ignoreSslErrors(errors);
}

void TcpSocketConnection::onDisconnected()
{
    qCDebug(dcRemoteProxyClientTcpSocket()) << "Disconnected from" << serverUrl().toString();
    setConnected(false);
}

void TcpSocketConnection::onEncrypted()
{
    qCDebug(dcRemoteProxyClientTcpSocket()) << "Connection encrypted";
    setConnected(true);
}

void TcpSocketConnection::onError(QAbstractSocket::SocketError error)
{
    qCWarning(dcRemoteProxyClientTcpSocket()) << "Socket error occurred" << error << m_tcpSocket->errorString();
    emit errorOccurred(error);
}

void TcpSocketConnection::onStateChanged(QAbstractSocket::SocketState state)
{
    qCDebug(dcRemoteProxyClientTcpSocket()) << "Socket state changed" << state;

    switch (state) {
    case QAbstractSocket::ConnectedState:
        qCDebug(dcRemoteProxyClientTcpSocket()) << "Connected with" << serverUrl().toString();
        if (!m_ssl) {
            setConnected(true);
        }
        break;
    default:
        setConnected(false);
        break;
    }

    emit stateChanged(state);
}

void TcpSocketConnection::onReadyRead()
{
    emit dataReceived(m_tcpSocket->readAll());
}

void TcpSocketConnection::connectServer(const QUrl &serverUrl)
{
    m_serverUrl = serverUrl;

    if (m_serverUrl.scheme() == "tcp") {
        qCDebug(dcRemoteProxyClientTcpSocket()) << "Connecting to" << m_serverUrl.toString();
        m_tcpSocket->connectToHost(QHostAddress(m_serverUrl.host()), static_cast<quint16>(m_serverUrl.port()));
    } else {
        m_ssl = true;
        qCDebug(dcRemoteProxyClientTcpSocket()) << "Connecting encrypted to" << m_serverUrl.host() + ":" + QString::number(m_serverUrl.port());
        m_tcpSocket->connectToHostEncrypted(m_serverUrl.host(), static_cast<quint16>(m_serverUrl.port()));
    }
}

void TcpSocketConnection::disconnectServer()
{
    qCDebug(dcRemoteProxyClientTcpSocket()) << "Disconnecting from" << serverUrl().toString();
    m_tcpSocket->disconnectFromHost();
    m_tcpSocket->close();
    m_tcpSocket->abort();
}

}