Initial commit

Lts/Services/OcBaseDownload/pdf_downloader.h

@@ -0,0 +1,73 @@
+/**
+  * @RDE_HEADER@
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Hannes Fritsche, NLE, 2019-04-30
+  */
+
+#pragma once
+
+#include <QObject>
+#include <QString>
+#include <QVector>
+#include <QSqlDatabase>
+
+#include <DBAdministration/exercise_table_generator.h>
+#include <FileManagement/flm_db.h>
+#include "WebSocketInterface/Messages/client_message.h"
+#include "settings.h"
+#include "logger.h"
+
+namespace OcBaseDownload
+{
+class PdfDownloadSocket;
+class MainHandler;
+
+class  PdfDownloader
+  : public QObject
+{
+  Q_OBJECT
+public:
+
+  explicit PdfDownloader(const QVector<WebSocketInterface::Messages::PdfListMessage::PdfInformation> &pdfInfoVec,
+                         MainHandler *mainHandler,
+                         const QString &hostName,
+                         int exerciseId,
+                         QObject *parent);
+  ~PdfDownloader();
+
+  bool startDownload();
+
+Q_SIGNALS:
+  void newState(int progress, const QString &msg);
+  void allDownloadsFinished();
+
+private Q_SLOTS:
+  void onSingleDownloadFinished(const QByteArray &data);
+
+private: // other
+  typedef WebSocketInterface::Messages::PdfListMessage::PdfInformation PdfInfo;
+
+private: // methods
+  bool hasCompletedFolderStructure();
+  bool startNextDownload();
+
+  bool openDbConnection();
+  QSqlDatabase openDb(bool *bOk);
+  void closeDb(QSqlDatabase &dbConn);
+
+private: // attributes
+  QVector<PdfInfo>                          m_pdfInfoVec;
+  PdfInfo                                   m_currentDownload;
+  PdfDownloadSocket                        *m_socket;
+  MainHandler                              *m_mainHandler;
+  int                                       m_exerciseId;
+  QSqlDatabase                              m_dbConnection;
+  DBAdministration::ExerciseTableGenerator *m_exTblGen;
+  int                                       m_downloadCount;
+  int                                       m_totalDownloads;
+
+  NGL::INGLLogger   &m_logger;
+};
+}