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#include <QDataStream>
#include <QJsonDocument>
#include <QJsonObject>

#include "socketclient.h"

SocketClient::SocketClient(QLocalSocket *socket, QObject *parent)
    : QObject(parent)
    , m_socket(socket)
{
    // Connect socket signals
    connect(m_socket, &QLocalSocket::connected, this, &SocketClient::connected);
    connect(m_socket, &QLocalSocket::disconnected, this, &SocketClient::disconnected);
    connect(m_socket, &QLocalSocket::readyRead, this, &SocketClient::readyRead);
}

qint64 SocketClient::write(const QByteArray &data) {
    return m_socket->write(data);
}

void SocketClient::readyRead() {
    m_data += m_socket->readAll();

    bool messagefound = true;
    while (messagefound) {
        messagefound = false;
        // If we have at least some data
        if (m_data.size() >= 4) {
            // Extract message size
            qint32 messagesize;
            QDataStream stream(m_data.left(4));
            stream >> messagesize;

            // If we have enough data for at least one message
            if (m_data.size() >= messagesize) {
                // Extract actual message
                QByteArray message = m_data.mid(4, messagesize - 4);
                parseMessage(message);
                // Drop necessary amount of bytes
                m_data = m_data.mid(messagesize);
                messagefound = true; // Try to parse another message
            }
        }
    }
}

void SocketClient::parseMessage(const QByteArray &message) {
    // Parse message from raw format
    QJsonDocument doc = QJsonDocument::fromBinaryData(message);
    QJsonObject obj = doc.object();

    emit clientMessage(obj);
}