XMLHTTPRequest.cpp

#include "XMLHttpRequest.h"

XMLHttpRequest::XMLHttpRequest(QObject *parent)
    : QObject(parent),
      p_status(0),
      p_readyState(0)
{
}

void XMLHttpRequest::open(QString method, QString url)
{
    p_method = method;
    p_request = Request(new QNetworkRequest(QUrl(url)));
    // clean state when a new ajax is made.
    p_status = 0;
    p_readyState = 0;
    p_responseText = "";
    p_statusText = "";
}

void XMLHttpRequest::send(QString data)
{
   auto bytedata = data.toUtf8();

   if (p_method == "POST")
   {
       p_reply = Reply(p_networkmanager.post(*p_request, bytedata));
   }
   else if (p_method == "GET")
   {
       p_reply = Reply(p_networkmanager.get(*p_request));
   }
   else if (p_method == "PUT")
   {
       p_reply = Reply(p_networkmanager.put(*p_request, bytedata));
   }
   else if (p_method == "DELETE")
   {
       p_reply = Reply(p_networkmanager.deleteResource(*p_request));
   }
   connect(&(*p_reply), &QNetworkReply::finished,
           [this]()
   {
       p_responseText = QString::fromUtf8(p_reply->readAll());
       p_status = p_reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
       p_statusText = QString::fromUtf8(p_reply->attribute(QNetworkRequest::HttpReasonPhraseAttribute).toByteArray());
       p_readyState = 4;
       if (p_reply->error())
       {
           p_status = p_reply->error();
           p_statusText = p_reply->errorString();
       }

       emit onreadystatechange();
   });
}

void XMLHttpRequest::send()
{
    send("");
}

QString XMLHttpRequest::getAllResponseHeaders()
{
    if (!p_readyState)
    {
        return "";
    }
    QStringList output;

    foreach (auto header, p_reply->rawHeaderPairs())
    {
        QString stringHeader;
        stringHeader = QString("%1: %2").arg(QString::fromUtf8(header.first),
                                             QString::fromUtf8(header.second));
        output << stringHeader;
    }
    return output.join("\n");
}

QString XMLHttpRequest::getResponseHeader(QString header)
{
    if (!p_readyState)
    {
        return "";
    }

    return QString::fromUtf8(p_reply->rawHeader(header.toUtf8()));
}

int XMLHttpRequest::getStatus()
{
    return p_status;
}

QString XMLHttpRequest::getStatusText()
{
    return p_statusText;
}

int XMLHttpRequest::getReadyState()
{
    return p_readyState;
}

QString XMLHttpRequest::getResponseText()
{
    return p_responseText;
}

void XMLHttpRequest::setup(QSharedPointer<QScriptEngine> engine)
{
    engine->globalObject().setProperty("XMLHTTPRequest",
                                       engine->newFunction(XMLHttpRequest_ctor));
}

QScriptValue XMLHttpRequest_ctor(QScriptContext *context, QScriptEngine *engine)
{
    return engine->toScriptValue(XMLHttpRequest());
}