/*
 * Copyright (c) 2014-2021 Alex Spataru <https://github.com/alex-spataru>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#ifndef DOWNLOAD_DIALOG_H
#define DOWNLOAD_DIALOG_H

#include <QDir>
#include <QDialog>
#include <ui_Downloader.h>

namespace Ui
{
class Downloader;
}

class QAuthenticator;
class QNetworkReply;
class QNetworkAccessManager;

/**
 * \brief Implements an integrated file downloader with a nice UI
 */
class Downloader : public QWidget
{
   Q_OBJECT

signals:
   void downloadFinished(const QString &url, const QString &filepath);

public:
   explicit Downloader(QWidget *parent = 0);
   ~Downloader();

   bool useCustomInstallProcedures() const;

   QString downloadDir() const;
   void setDownloadDir(const QString &downloadDir);

public slots:
   void setUrlId(const QString &url);
   void startDownload(const QUrl &url);
   void setFileName(const QString &file);
   void setUserAgentString(const QString &agent);
   void setUseCustomInstallProcedures(const bool custom);
   void setMandatoryUpdate(const bool mandatory_update);

private slots:
   void finished();
   void metaDataChanged();
   void openDownload();
   void installUpdate();
   void cancelDownload();
   void saveFile(qint64 received, qint64 total);
   void calculateSizes(qint64 received, qint64 total);
   void updateProgress(qint64 received, qint64 total);
   void calculateTimeRemaining(qint64 received, qint64 total);
   void authenticate(QNetworkReply *reply, QAuthenticator *authenticator);

private:
   qreal round(const qreal &input);

private:
   QString m_url;
   uint m_startTime;
   QDir m_downloadDir;
   QString m_fileName;
   Ui::Downloader *m_ui;
   QNetworkReply *m_reply;
   QString m_userAgentString;

   bool m_useCustomProcedures;
   bool m_mandatoryUpdate;

   QNetworkAccessManager *m_manager;
};

#endif
