1 files changed, 91 insertions, 0 deletions
diff --git a/backends/cloud/googledrive/googledrivestreamfilerequest.cpp b/backends/cloud/googledrive/googledrivestreamfilerequest.cpp
new file mode 100644
index 0000000000..424e52c6cb
--- /dev/null
+++ b/backends/cloud/googledrive/googledrivestreamfilerequest.cpp
@@ -0,0 +1,91 @@
+/* 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 2
+* 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, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+*/
+
+#include "backends/cloud/googledrive/googledrivestreamfilerequest.h"
+#include "backends/cloud/googledrive/googledrivestorage.h"
+
+namespace Cloud {
+namespace GoogleDrive {
+
+GoogleDriveStreamFileRequest::GoogleDriveStreamFileRequest(GoogleDriveStorage *storage, Common::String path, Networking::NetworkReadStreamCallback cb, Networking::ErrorCallback ecb):
+	Networking::Request(nullptr, ecb), _requestedFile(path), _storage(storage), _streamCallback(cb),
+	_workingRequest(nullptr), _ignoreCallback(false) {
+	start();
+}
+
+GoogleDriveStreamFileRequest::~GoogleDriveStreamFileRequest() {
+	_ignoreCallback = true;
+	if (_workingRequest) _workingRequest->finish();
+	delete _streamCallback;
+}
+
+void GoogleDriveStreamFileRequest::start() {
+	//cleanup
+	_ignoreCallback = true;
+	if (_workingRequest) _workingRequest->finish();
+	_workingRequest = nullptr;
+	_ignoreCallback = false;
+
+	//find file's id
+	Storage::UploadCallback innerCallback = new Common::Callback<GoogleDriveStreamFileRequest, Storage::UploadResponse>(this, &GoogleDriveStreamFileRequest::idResolvedCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<GoogleDriveStreamFileRequest, Networking::ErrorResponse>(this, &GoogleDriveStreamFileRequest::idResolveFailedCallback);	
+	_workingRequest = _storage->resolveFileId(_requestedFile, innerCallback, innerErrorCallback);
+}
+
+void GoogleDriveStreamFileRequest::idResolvedCallback(Storage::UploadResponse response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+
+	Networking::NetworkReadStreamCallback innerCallback = new Common::Callback<GoogleDriveStreamFileRequest, Networking::NetworkReadStreamResponse>(this, &GoogleDriveStreamFileRequest::streamFileCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<GoogleDriveStreamFileRequest, Networking::ErrorResponse>(this, &GoogleDriveStreamFileRequest::streamFileErrorCallback);
+	_workingRequest = _storage->streamFileById(response.value.id(), innerCallback, innerErrorCallback);
+}
+
+void GoogleDriveStreamFileRequest::idResolveFailedCallback(Networking::ErrorResponse error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+	finishError(error);
+}
+
+void GoogleDriveStreamFileRequest::streamFileCallback(Networking::NetworkReadStreamResponse response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+	finishStream(response.value);
+}
+
+void GoogleDriveStreamFileRequest::streamFileErrorCallback(Networking::ErrorResponse error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+	finishError(error);
+}
+
+void GoogleDriveStreamFileRequest::handle() {}
+
+void GoogleDriveStreamFileRequest::restart() { start(); }
+
+void GoogleDriveStreamFileRequest::finishStream(Networking::NetworkReadStream *stream) {
+	Request::finishSuccess();
+	if (_streamCallback) (*_streamCallback)(Networking::NetworkReadStreamResponse(this, stream));
+}
+
+} // End of namespace GoogleDrive
+} // End of namespace Cloud