Initial commit

backends/cloud/id/idstreamfilerequest.cpp

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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/>.
+ *
+ */
+
+#include "backends/cloud/id/idstreamfilerequest.h"
+#include "backends/cloud/id/idstorage.h"
+
+namespace Cloud {
+namespace Id {
+
+IdStreamFileRequest::IdStreamFileRequest(IdStorage *storage, const Common::String &path, Networking::NetworkReadStreamCallback cb, Networking::ErrorCallback ecb):
+	Networking::Request(nullptr, ecb), _requestedFile(path), _storage(storage), _streamCallback(cb),
+	_workingRequest(nullptr), _ignoreCallback(false) {
+	start();
+}
+
+IdStreamFileRequest::~IdStreamFileRequest() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	delete _streamCallback;
+}
+
+void IdStreamFileRequest::start() {
+	//cleanup
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	_workingRequest = nullptr;
+	_ignoreCallback = false;
+
+	//find file's id
+	Storage::UploadCallback innerCallback = new Common::Callback<IdStreamFileRequest, const Storage::UploadResponse &>(this, &IdStreamFileRequest::idResolvedCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdStreamFileRequest, const Networking::ErrorResponse &>(this, &IdStreamFileRequest::idResolveFailedCallback);
+	_workingRequest = _storage->resolveFileId(_requestedFile, innerCallback, innerErrorCallback);
+}
+
+void IdStreamFileRequest::idResolvedCallback(const Storage::UploadResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+
+	Networking::NetworkReadStreamCallback innerCallback = new Common::Callback<IdStreamFileRequest, const Networking::NetworkReadStreamResponse &>(this, &IdStreamFileRequest::streamFileCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdStreamFileRequest, const Networking::ErrorResponse &>(this, &IdStreamFileRequest::streamFileErrorCallback);
+	_workingRequest = _storage->streamFileById(response.value.id(), innerCallback, innerErrorCallback);
+}
+
+void IdStreamFileRequest::idResolveFailedCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	finishError(error);
+}
+
+void IdStreamFileRequest::streamFileCallback(const Networking::NetworkReadStreamResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	finishStream(response.value);
+}
+
+void IdStreamFileRequest::streamFileErrorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	finishError(error);
+}
+
+void IdStreamFileRequest::handle() {}
+
+void IdStreamFileRequest::restart() { start(); }
+
+void IdStreamFileRequest::finishStream(Networking::NetworkReadStream *stream) {
+	Request::finishSuccess();
+	if (_streamCallback)
+		(*_streamCallback)(Networking::NetworkReadStreamResponse(this, stream));
+}
+
+} // End of namespace Id
+} // End of namespace Cloud