#include "buzzerconn.h"

BuzzerConn::BuzzerConn(QObject *parent) : QObject(parent)
{
    this->networkManager = new QNetworkAccessManager();
    connect();
}

bool BuzzerConn::connect()
{
    QList<double> times = gettimes();

    if(times[0] == 200.0){
        this->connected = true;
        calcoffset();
        calcoffset();
        calcoffset();
        return(true);
    }
    else{
        return(false);
    }
}

void BuzzerConn::calcoffset()
{
    QList<double> times = gettimes();
    QDateTime * date = new QDateTime;
    double offset = date->currentMSecsSinceEpoch() - times[2];
    this->latest_offsets.append(offset);
    double mem = 0;
    for(int i=0;i<latest_offsets.length();i++){
        qDebug()<<latest_offsets[i];
        mem += latest_offsets[i];
    }
    this->offset = mem / double(latest_offsets.length());
}

QList<double> BuzzerConn::gettimes()
{
    QList<double> times;
    ReturnData_t ret = senddata(QUrl("http://192.168.4.1"));
    times.append(double(ret.status_code));

    if(ret.status_code == 200){
        qDebug()<<ret.text;
        ret.text.replace("\n","");
        ret.text.replace("\r","");
        QStringList times_cache = ret.text.split("<br>");
        times.append(times_cache[0].toDouble());
        times.append(times_cache[1].toDouble());

        return(times);
    }
    else{
        return(times);
    }
}

ReturnData_t BuzzerConn::senddata(QUrl serviceUrl)
{

    ReturnData_t ret; //this is a custom type to store the returned data
    // Call the webservice

    QNetworkRequest request(serviceUrl);
    request.setHeader(QNetworkRequest::ContentTypeHeader,
        "application/x-www-form-urlencoded");

    //set ssl configuration
    //send a POST request with the given url and data to the server
    QUrlQuery pdata;
    QNetworkReply* reply;

    reply = this->networkManager->post(request, pdata.toString(QUrl::FullyEncoded).toUtf8());

    //wait until the request has finished
    QEventLoop loop;
    loop.connect(this->networkManager, SIGNAL(finished(QNetworkReply*)), SLOT(quit()));
    loop.exec();

    //get the status code
    QVariant status_code = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);

    ret.status_code = status_code.toInt();
    if(ret.status_code == 0){ //if tehstatus code is zero, the connecion to the server was not possible
        ret.status_code = 444;
    }
    //get the full text response
    ret.text = QString::fromUtf8(reply->readAll());

    //return the data
    return(ret);
}