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835e4af3e4
* Add a doxy group for the PictureLoader. Took 26 minutes * Linting is a fun activity for children and adults of all ages and sizes. Took 5 minutes --------- Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
/**
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* @file picture_loader_worker.h
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* @ingroup PictureLoader
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* @brief TODO: Document this.
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*/
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#ifndef PICTURE_LOADER_WORKER_H
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#define PICTURE_LOADER_WORKER_H
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#include "../card/card_info.h"
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#include "../database/card_database.h"
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#include "picture_loader_local.h"
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#include "picture_loader_worker_work.h"
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#include "picture_to_load.h"
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#include <QLoggingCategory>
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#include <QMutex>
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#include <QNetworkAccessManager>
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#include <QNetworkDiskCache>
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#include <QObject>
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#include <QQueue>
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#include <QTimer>
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#define REDIRECT_HEADER_NAME "redirects"
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#define REDIRECT_ORIGINAL_URL "original"
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#define REDIRECT_URL "redirect"
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#define REDIRECT_TIMESTAMP "timestamp"
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#define REDIRECT_CACHE_FILENAME "cache.ini"
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inline Q_LOGGING_CATEGORY(PictureLoaderWorkerLog, "picture_loader.worker");
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class PictureLoaderWorkerWork;
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class PictureLoaderWorker : public QObject
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{
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Q_OBJECT
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public:
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explicit PictureLoaderWorker();
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~PictureLoaderWorker() override;
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void enqueueImageLoad(const ExactCard &card); // Starts a thread for the image to be loaded
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void queueRequest(const QUrl &url, PictureLoaderWorkerWork *worker); // Queues network requests for load threads
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void clearNetworkCache();
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public slots:
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QNetworkReply *makeRequest(const QUrl &url, PictureLoaderWorkerWork *workThread);
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void processQueuedRequests();
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bool processSingleRequest();
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void handleImageLoaded(const ExactCard &card, const QImage &image);
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void cacheRedirect(const QUrl &originalUrl, const QUrl &redirectUrl);
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void removedCachedUrl(const QUrl &url);
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private:
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QThread *pictureLoaderThread;
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QNetworkAccessManager *networkManager;
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QNetworkDiskCache *cache;
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QHash<QUrl, QPair<QUrl, QDateTime>> redirectCache; // Stores redirect and timestamp
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QString cacheFilePath; // Path to persistent storage
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static constexpr int CacheTTLInDays = 30; // TODO: Make user configurable
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bool picDownload;
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QQueue<QPair<QUrl, PictureLoaderWorkerWork *>> requestLoadQueue;
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int requestQuota;
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QTimer requestTimer; // Timer for refreshing request quota
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PictureLoaderLocal *localLoader;
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QSet<QString> currentlyLoading; // for deduplication purposes. Contains pixmapCacheKey
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QUrl getCachedRedirect(const QUrl &originalUrl) const;
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void loadRedirectCache();
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void saveRedirectCache() const;
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void cleanStaleEntries();
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private slots:
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void resetRequestQuota();
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void handleImageLoadEnqueued(const ExactCard &card);
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signals:
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void imageLoadEnqueued(const ExactCard &card);
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void imageLoaded(const ExactCard &card, const QImage &image);
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void imageRequestQueued(const QUrl &url, const ExactCard &card, const QString &setName);
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void imageRequestSucceeded(const QUrl &url);
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};
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#endif // PICTURE_LOADER_WORKER_H
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