#include "WebImageView.h"
#include <bb/cascades/Image>

QNetworkAccessManager * WebImageView::mNetManager = new QNetworkAccessManager;
QNetworkDiskCache * WebImageView::mNetworkDiskCache = new QNetworkDiskCache();

WebImageView::WebImageView() {
	mNetworkDiskCache->setCacheDirectory(QDesktopServices::storageLocation(QDesktopServices::CacheLocation));
	mNetManager->setCache(mNetworkDiskCache);
}

const QUrl& WebImageView::url() const {
	return mUrl;
}

void WebImageView::setUrl(const QUrl& url) {

	mUrl = url;
	mLoading = 0;

	resetImage();
	QNetworkRequest request;
	request.setAttribute(QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferCache);
	request.setUrl(url);

	QNetworkReply * reply = mNetManager->get(QNetworkRequest(request));
	connect(reply,SIGNAL(finished()), this, SLOT(imageLoaded()));
	connect(reply,SIGNAL(downloadProgress ( qint64 , qint64  )), this, SLOT(dowloadProgressed(qint64,qint64)));
	emit urlChanged();
}

double WebImageView::loading() const {
	return mLoading;
}

void WebImageView::imageLoaded() {

	QNetworkReply * reply = qobject_cast<QNetworkReply*>(sender());

	QVariant possibleRedirectUrl = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);

	mRedirectUrl = this->redirectUrl(possibleRedirectUrl.toUrl(),mRedirectUrl);
	if (!mRedirectUrl.isEmpty()) {
		this->setUrl(mRedirectUrl);
	} else {
		setImage(Image(reply->readAll()));
	}

	reply->deleteLater();

}

void WebImageView::dowloadProgressed(qint64 bytes,qint64 total) {


	mLoading =  double(bytes)/double(total);
	emit loadingChanged();

}

QUrl WebImageView::redirectUrl(const QUrl& possibleRedirectUrl, const QUrl& oldRedirectUrl) const {
	QUrl redirectUrl;
	if (!possibleRedirectUrl.isEmpty() && possibleRedirectUrl != oldRedirectUrl) {
		redirectUrl = possibleRedirectUrl;
	}
	return redirectUrl;
}