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** This file is part of the E-Bike demo project.
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#include <QLocalServer>
#include <QJsonDocument>
#include <QDataStream>

#include "socketserver.h"
#include "socketclient.h"

SocketServer::SocketServer(QObject *parent)
    : QObject(parent)
    , m_server(new QLocalServer(this))
{
    connect(m_server, &QLocalServer::newConnection, this, &SocketServer::processConnected);
    QLocalServer::removeServer("datasocket");
    m_server->listen("datasocket");
}

void SocketServer::processConnected(void) {
    while (m_server->hasPendingConnections()) {
        QLocalSocket* socket = m_server->nextPendingConnection();
        qDebug() << "Client connected" << socket;
        if (socket) {
            SocketClient *client = new SocketClient(socket, this);
            connect(client, &SocketClient::disconnected, this, &SocketServer::processDisconnected);
            connect(client, &SocketClient::clientMessage, this, &SocketServer::clientMessage);
            m_clients.append(client);
        }
    }
}

void SocketServer::processDisconnected(void) {
    SocketClient *client = qobject_cast<SocketClient*>(sender());
    qDebug() << "Client disconnected" << client->socket();
    m_clients.removeOne(client);
    client->deleteLater();
}

void SocketServer::sendToClients(const QByteArray &message) {
    // Prepend the message length
    QByteArray data;
    QDataStream stream(&data, QIODevice::WriteOnly);
    stream << static_cast<qint32>(message.size() + 4);
    data.append(message);

    foreach (SocketClient *client, m_clients) {
        client->write(data);
    }
}

/**
 * @brief sendToClients
 * @param message
 *
 * Converts a JSON object to its binary representation and sends it to all clients
 */
void SocketServer::sendToClients(const QJsonObject &message) {
    QJsonDocument doc(message);
    sendToClients(doc.toBinaryData());
}