NetworkManager.hpp

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//
// Created by kj16609 on 12/9/23.
//
 
#pragma once
 
#include <QNetworkAccessManager>
#include <QPromise>
#include <QTimer>
 
#include <queue>
 
#include "core/Types.hpp"
#include "ui/notifications/ProgressNotification.hpp"
 
namespace atlas::network
{
 
    class Downloader final : public QObject
    {
        Q_OBJECT
 
        QUrl m_url {};
        QPromise< QImage >* promise {};
        QNetworkReply* m_reply { nullptr };
        std::unique_ptr< ProgressSignaler > m_signaler { nullptr };
 
        Q_DISABLE_COPY_MOVE( Downloader )
 
      public:
 
        Downloader() = default;
 
        QFuture< QImage > getImage( const QUrl& url );
 
        void run( QNetworkAccessManager& manager );
 
      private slots:
        void downloadFinished();
        void downloadProgress( qint64 bytesReceived, qint64 bytesTotal );
    };
 
    class NetworkManager : public QObject
    {
        Q_OBJECT
 
        std::unique_ptr< QNetworkAccessManager > m_access_manager {};
 
        std::queue< std::unique_ptr< Downloader > > download_queue;
 
        QTimer timer {};
 
        Q_DISABLE_COPY_MOVE( NetworkManager )
 
      public:
 
        NetworkManager();
 
        QNetworkAccessManager& accessManager() { return *m_access_manager; }
 
        static NetworkManager& instance();
 
        QFuture< QImage > getImage( const QUrl& url );
 
      private slots:
        void onTimeout();
        void setup();
    };
 
} // namespace atlas::network