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backends/cloud/downloadrequest.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef BACKENDS_CLOUD_DOWNLOADREQUEST_H
+#define BACKENDS_CLOUD_DOWNLOADREQUEST_H
+
+#include "backends/networking/http/request.h"
+#include "backends/networking/http/networkreadstream.h"
+#include "backends/cloud/storage.h"
+#include "common/file.h"
+
+namespace Cloud {
+
+#define DOWNLOAD_REQUEST_BUFFER_SIZE 1 * 1024 * 1024
+
+class DownloadRequest: public Networking::Request {
+	Storage::BoolCallback _boolCallback;
+	Common::DumpFile *_localFile;
+	Common::String _remoteFileId;
+	Storage *_storage;
+	Networking::NetworkReadStream *_remoteFileStream;
+	Request *_workingRequest;
+	bool _ignoreCallback;
+	byte *_buffer;
+
+	void start();
+	void streamCallback(const Networking::NetworkReadStreamResponse &response);
+	void streamErrorCallback(const Networking::ErrorResponse &error);
+	void finishDownload(bool success);
+	void finishError(const Networking::ErrorResponse &error, Networking::RequestState state = Networking::FINISHED) override;
+
+public:
+	DownloadRequest(Storage *storage, Storage::BoolCallback callback, Networking::ErrorCallback ecb, const Common::String &remoteFileId, Common::DumpFile *dumpFile);
+	~DownloadRequest() override;
+
+	void handle() override;
+	void restart() override;
+
+	/** Returns a number in range [0, 1], where 1 is "complete". */
+	double getProgress() const;
+};
+
+} // End of namespace Cloud
+
+#endif