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#ifndef DOWNLOADFILETASK_P_H
#define DOWNLOADFILETASK_P_H

#include "downloadfiletask.h"

#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>

QT_BEGIN_NAMESPACE
class QFile;
class QSslError;
QT_END_NAMESPACE

namespace QInstaller {

class FileTaskObserver;

struct Data
{
    Data()
        : file(0), observer(0) {}
    Data(QFile *f, FileTaskObserver *o, const FileTaskItem &fti)
        : file(f), observer(o), taskItem(fti)
    {}
    QFile *file;
    FileTaskObserver *observer;
    FileTaskItem taskItem;
};

class Downloader : public QObject
{
    Q_OBJECT
    Q_DISABLE_COPY(Downloader)

public:
    Downloader();
    ~Downloader();

    void download(QFutureInterface<FileTaskResult> &fi, const QList<FileTaskItem> &items,
        QNetworkProxyFactory *networkProxyFactory);

signals:
    void finished();

private slots:
    void doDownload();
    void onReadyRead();
    void onFinished(QNetworkReply *reply);
    void onError(QNetworkReply::NetworkError error);
    void onSslErrors(const QList<QSslError> &sslErrors);
    void onDownloadProgress(qint64 bytesReceived, qint64 bytesTotal);
    void onAuthenticationRequired(QNetworkReply *reply, QAuthenticator *authenticator);
    void onProxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *authenticator);


private:
    bool testCanceled();
    QNetworkReply *startDownload(const FileTaskItem &item);

private:
    QFutureInterface<FileTaskResult> *m_futureInterface;

    int m_finished;
    QNetworkAccessManager m_nam;
    QList<FileTaskItem> m_items;
    QHash<QNetworkReply*, Data> m_downloads;
    QMultiHash<QNetworkReply*, QUrl> m_redirects;
};

}   // namespace QInstaller

#endif // DOWNLOADFILETASK_P_H