Initial commit

backends/cloud/id/idcreatedirectoryrequest.cpp

@@ -0,0 +1,162 @@
+/* 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/idcreatedirectoryrequest.h"
+#include "backends/cloud/id/idstorage.h"
+#include "common/debug.h"
+
+namespace Cloud {
+namespace Id {
+
+IdCreateDirectoryRequest::IdCreateDirectoryRequest(IdStorage *storage, const Common::String &parentPath, const Common::String &directoryName, Storage::BoolCallback cb, Networking::ErrorCallback ecb):
+	Networking::Request(nullptr, ecb),
+	_requestedParentPath(parentPath), _requestedDirectoryName(directoryName), _storage(storage), _boolCallback(cb),
+	_workingRequest(nullptr), _ignoreCallback(false) {
+	start();
+}
+
+IdCreateDirectoryRequest::~IdCreateDirectoryRequest() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	delete _boolCallback;
+}
+
+void IdCreateDirectoryRequest::start() {
+	//cleanup
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	_workingRequest = nullptr;
+	_ignoreCallback = false;
+
+	//the only exception when we create parent folder - is when it's ScummVM/ base folder
+	Common::String prefix = _requestedParentPath;
+	if (prefix.size() > 7)
+		prefix.erase(7);
+	if (prefix.equalsIgnoreCase("ScummVM")) {
+		Storage::BoolCallback callback = new Common::Callback<IdCreateDirectoryRequest, const Storage::BoolResponse &>(this, &IdCreateDirectoryRequest::createdBaseDirectoryCallback);
+		Networking::ErrorCallback failureCallback = new Common::Callback<IdCreateDirectoryRequest, const Networking::ErrorResponse &>(this, &IdCreateDirectoryRequest::createdBaseDirectoryErrorCallback);
+		_workingRequest = _storage->createDirectory("ScummVM", callback, failureCallback);
+		return;
+	}
+
+	resolveId();
+}
+
+void IdCreateDirectoryRequest::createdBaseDirectoryCallback(const Storage::BoolResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (response.request)
+		_date = response.request->date();
+	resolveId();
+}
+
+void IdCreateDirectoryRequest::createdBaseDirectoryErrorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (error.request)
+		_date = error.request->date();
+	finishError(error);
+}
+
+void IdCreateDirectoryRequest::resolveId() {
+	//check whether such folder already exists
+	Storage::UploadCallback innerCallback = new Common::Callback<IdCreateDirectoryRequest, const Storage::UploadResponse &>(this, &IdCreateDirectoryRequest::idResolvedCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdCreateDirectoryRequest, const Networking::ErrorResponse &>(this, &IdCreateDirectoryRequest::idResolveFailedCallback);
+	Common::String path = _requestedParentPath;
+	if (_requestedParentPath != "")
+		path += "/";
+	path += _requestedDirectoryName;
+	_workingRequest = _storage->resolveFileId(path, innerCallback, innerErrorCallback);
+}
+
+void IdCreateDirectoryRequest::idResolvedCallback(const Storage::UploadResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (response.request)
+		_date = response.request->date();
+
+	//resolved => folder already exists
+	finishCreation(false);
+}
+
+void IdCreateDirectoryRequest::idResolveFailedCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (error.request)
+		_date = error.request->date();
+
+	//not resolved => folder not exists
+	if (error.response.contains("no such file found in its parent directory")) {
+		//parent's id after the '\n'
+		Common::String parentId = error.response;
+		for (uint32 i = 0; i < parentId.size(); ++i)
+			if (parentId[i] == '\n') {
+				parentId.erase(0, i + 1);
+				break;
+			}
+
+		Storage::BoolCallback callback = new Common::Callback<IdCreateDirectoryRequest, const Storage::BoolResponse &>(this, &IdCreateDirectoryRequest::createdDirectoryCallback);
+		Networking::ErrorCallback failureCallback = new Common::Callback<IdCreateDirectoryRequest, const Networking::ErrorResponse &>(this, &IdCreateDirectoryRequest::createdDirectoryErrorCallback);
+		_workingRequest = _storage->createDirectoryWithParentId(parentId, _requestedDirectoryName, callback, failureCallback);
+		return;
+	}
+
+	finishError(error);
+}
+
+void IdCreateDirectoryRequest::createdDirectoryCallback(const Storage::BoolResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (response.request)
+		_date = response.request->date();
+	finishCreation(response.value);
+}
+
+void IdCreateDirectoryRequest::createdDirectoryErrorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (error.request)
+		_date = error.request->date();
+	finishError(error);
+}
+
+void IdCreateDirectoryRequest::handle() {}
+
+void IdCreateDirectoryRequest::restart() { start(); }
+
+Common::String IdCreateDirectoryRequest::date() const { return _date; }
+
+void IdCreateDirectoryRequest::finishCreation(bool success) {
+	Request::finishSuccess();
+	if (_boolCallback)
+		(*_boolCallback)(Storage::BoolResponse(this, success));
+}
+
+} // End of namespace Id
+} // End of namespace Cloud

backends/cloud/id/idcreatedirectoryrequest.h

@@ -0,0 +1,64 @@
+/* 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_ID_IDCREATEDIRECTORYREQUEST_H
+#define BACKENDS_CLOUD_ID_IDCREATEDIRECTORYREQUEST_H
+
+#include "backends/cloud/storage.h"
+#include "backends/networking/http/request.h"
+#include "common/callback.h"
+
+namespace Cloud {
+namespace Id {
+
+class IdStorage;
+
+class IdCreateDirectoryRequest: public Networking::Request {
+	Common::String _requestedParentPath;
+	Common::String _requestedDirectoryName;
+	IdStorage *_storage;
+	Storage::BoolCallback _boolCallback;
+	Request *_workingRequest;
+	bool _ignoreCallback;
+	Common::String _date;
+
+	void start();
+	void createdBaseDirectoryCallback(const Storage::BoolResponse &response);
+	void createdBaseDirectoryErrorCallback(const Networking::ErrorResponse &error);
+	void resolveId();
+	void idResolvedCallback(const Storage::UploadResponse &response);
+	void idResolveFailedCallback(const Networking::ErrorResponse &error);
+	void createdDirectoryCallback(const Storage::BoolResponse &response);
+	void createdDirectoryErrorCallback(const Networking::ErrorResponse &error);
+	void finishCreation(bool success);
+public:
+	IdCreateDirectoryRequest(IdStorage *storage, const Common::String &parentPath, const Common::String &directoryName, Storage::BoolCallback cb, Networking::ErrorCallback ecb);
+	~IdCreateDirectoryRequest() override;
+
+	void handle() override;
+	void restart() override;
+	Common::String date() const override;
+};
+
+} // End of namespace Id
+} // End of namespace Cloud
+
+#endif

backends/cloud/id/iddownloadrequest.cpp

@@ -0,0 +1,107 @@
+/* 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/iddownloadrequest.h"
+#include "backends/cloud/id/idstorage.h"
+#include "backends/cloud/downloadrequest.h"
+
+namespace Cloud {
+namespace Id {
+
+IdDownloadRequest::IdDownloadRequest(IdStorage *storage, const Common::String &remotePath, const Common::Path &localPath, Storage::BoolCallback cb, Networking::ErrorCallback ecb):
+	Networking::Request(nullptr, ecb), _requestedFile(remotePath), _requestedLocalFile(localPath), _storage(storage), _boolCallback(cb),
+	_workingRequest(nullptr), _ignoreCallback(false) {
+	start();
+}
+
+IdDownloadRequest::~IdDownloadRequest() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	delete _boolCallback;
+}
+
+void IdDownloadRequest::start() {
+	//cleanup
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	_workingRequest = nullptr;
+	_ignoreCallback = false;
+
+	//find file's id
+	Storage::UploadCallback innerCallback = new Common::Callback<IdDownloadRequest, const Storage::UploadResponse &>(this, &IdDownloadRequest::idResolvedCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdDownloadRequest, const Networking::ErrorResponse &>(this, &IdDownloadRequest::idResolveFailedCallback);
+	_workingRequest = _storage->resolveFileId(_requestedFile, innerCallback, innerErrorCallback);
+}
+
+void IdDownloadRequest::idResolvedCallback(const Storage::UploadResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+
+	Storage::BoolCallback innerCallback = new Common::Callback<IdDownloadRequest, const Storage::BoolResponse &>(this, &IdDownloadRequest::downloadCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdDownloadRequest, const Networking::ErrorResponse &>(this, &IdDownloadRequest::downloadErrorCallback);
+	_workingRequest = _storage->downloadById(response.value.id(), _requestedLocalFile, innerCallback, innerErrorCallback);
+}
+
+void IdDownloadRequest::idResolveFailedCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	finishError(error);
+}
+
+void IdDownloadRequest::downloadCallback(const Storage::BoolResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	finishDownload(response.value);
+}
+
+void IdDownloadRequest::downloadErrorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	finishError(error);
+}
+
+void IdDownloadRequest::handle() {}
+
+void IdDownloadRequest::restart() { start(); }
+
+void IdDownloadRequest::finishDownload(bool success) {
+	Request::finishSuccess();
+	if (_boolCallback)
+		(*_boolCallback)(Storage::BoolResponse(this, success));
+}
+
+double IdDownloadRequest::getProgress() const {
+	DownloadRequest *downloadRequest = dynamic_cast<DownloadRequest *>(_workingRequest);
+	if (downloadRequest == nullptr)
+		return 0; // resolving id still
+
+	// id resolve is 10 % and download is the other 90 %
+	return 0.1 + 0.9 * downloadRequest->getProgress(); // downloading
+}
+
+} // End of namespace Id
+} // End of namespace Cloud

backends/cloud/id/iddownloadrequest.h

@@ -0,0 +1,62 @@
+/* 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_ID_IDDOWNLOADREQUEST_H
+#define BACKENDS_CLOUD_ID_IDDOWNLOADREQUEST_H
+
+#include "backends/cloud/storage.h"
+#include "backends/networking/http/request.h"
+#include "common/callback.h"
+
+namespace Cloud {
+namespace Id {
+
+class IdStorage;
+
+class IdDownloadRequest: public Networking::Request {
+	Common::String _requestedFile;
+	Common::Path _requestedLocalFile;
+	IdStorage *_storage;
+	Storage::BoolCallback _boolCallback;
+	Request *_workingRequest;
+	bool _ignoreCallback;
+
+	void start();
+	void idResolvedCallback(const Storage::UploadResponse &response);
+	void idResolveFailedCallback(const Networking::ErrorResponse &error);
+	void downloadCallback(const Storage::BoolResponse &response);
+	void downloadErrorCallback(const Networking::ErrorResponse &error);
+	void finishDownload(bool success);
+public:
+	IdDownloadRequest(IdStorage *storage, const Common::String &remotePath, const Common::Path &localPath, Storage::BoolCallback cb, Networking::ErrorCallback ecb);
+	~IdDownloadRequest() override;
+
+	void handle() override;
+	void restart() override;
+
+	/** Returns a number in range [0, 1], where 1 is "complete". */
+	double getProgress() const;
+};
+
+} // End of namespace Id
+} // End of namespace Cloud
+
+#endif

backends/cloud/id/idlistdirectoryrequest.cpp

@@ -0,0 +1,140 @@
+/* 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/idlistdirectoryrequest.h"
+#include "backends/cloud/id/idstorage.h"
+
+namespace Cloud {
+namespace Id {
+
+IdListDirectoryRequest::IdListDirectoryRequest(IdStorage *storage, const Common::String &path, Storage::ListDirectoryCallback cb, Networking::ErrorCallback ecb, bool recursive):
+	Networking::Request(nullptr, ecb),
+	_requestedPath(path), _requestedRecursive(recursive), _storage(storage), _listDirectoryCallback(cb),
+	_workingRequest(nullptr), _ignoreCallback(false) {
+	start();
+}
+
+IdListDirectoryRequest::~IdListDirectoryRequest() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	delete _listDirectoryCallback;
+}
+
+void IdListDirectoryRequest::start() {
+	//cleanup
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	_workingRequest = nullptr;
+	_files.clear();
+	_directoriesQueue.clear();
+	_currentDirectory = StorageFile();
+	_ignoreCallback = false;
+
+	//find out that directory's id
+	Storage::UploadCallback innerCallback = new Common::Callback<IdListDirectoryRequest, const Storage::UploadResponse &>(this, &IdListDirectoryRequest::idResolvedCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdListDirectoryRequest, const Networking::ErrorResponse &>(this, &IdListDirectoryRequest::idResolveErrorCallback);
+	_workingRequest = _storage->resolveFileId(_requestedPath, innerCallback, innerErrorCallback);
+}
+
+void IdListDirectoryRequest::idResolvedCallback(const Storage::UploadResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (response.request)
+		_date = response.request->date();
+
+	StorageFile directory = response.value;
+	directory.setPath(_requestedPath);
+	_directoriesQueue.push_back(directory);
+	listNextDirectory();
+}
+
+void IdListDirectoryRequest::idResolveErrorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (error.request)
+		_date = error.request->date();
+	finishError(error);
+}
+
+void IdListDirectoryRequest::listNextDirectory() {
+	if (_directoriesQueue.empty()) {
+		finishListing(_files);
+		return;
+	}
+
+	_currentDirectory = _directoriesQueue.back();
+	_directoriesQueue.pop_back();
+
+	Storage::FileArrayCallback callback = new Common::Callback<IdListDirectoryRequest, const Storage::FileArrayResponse &>(this, &IdListDirectoryRequest::listedDirectoryCallback);
+	Networking::ErrorCallback failureCallback = new Common::Callback<IdListDirectoryRequest, const Networking::ErrorResponse &>(this, &IdListDirectoryRequest::listedDirectoryErrorCallback);
+	_workingRequest = _storage->listDirectoryById(_currentDirectory.id(), callback, failureCallback);
+}
+
+void IdListDirectoryRequest::listedDirectoryCallback(const Storage::FileArrayResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (response.request)
+		_date = response.request->date();
+
+	for (uint32 i = 0; i < response.value.size(); ++i) {
+		StorageFile file = response.value[i];
+		Common::String path = _currentDirectory.path();
+		if (path.size() && path.lastChar() != '/' && path.lastChar() != '\\')
+			path += '/';
+		path += file.name();
+		file.setPath(path);
+		_files.push_back(file);
+		if (_requestedRecursive && file.isDirectory()) {
+			_directoriesQueue.push_back(file);
+		}
+	}
+
+	listNextDirectory();
+}
+
+void IdListDirectoryRequest::listedDirectoryErrorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (error.request)
+		_date = error.request->date();
+	finishError(error);
+}
+
+void IdListDirectoryRequest::handle() {}
+
+void IdListDirectoryRequest::restart() { start(); }
+
+Common::String IdListDirectoryRequest::date() const { return _date; }
+
+void IdListDirectoryRequest::finishListing(const Common::Array<StorageFile> &files) {
+	Request::finishSuccess();
+	if (_listDirectoryCallback)
+		(*_listDirectoryCallback)(Storage::ListDirectoryResponse(this, files));
+}
+
+} // End of namespace Id
+} // End of namespace Cloud

backends/cloud/id/idlistdirectoryrequest.h

@@ -0,0 +1,65 @@
+/* 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_ID_IDLISTDIRECTORYREQUEST_H
+#define BACKENDS_CLOUD_ID_IDLISTDIRECTORYREQUEST_H
+
+#include "backends/cloud/storage.h"
+#include "backends/networking/http/request.h"
+#include "common/callback.h"
+
+namespace Cloud {
+namespace Id {
+
+class IdStorage;
+
+class IdListDirectoryRequest: public Networking::Request {
+	Common::String _requestedPath;
+	bool _requestedRecursive;
+	IdStorage *_storage;
+	Storage::ListDirectoryCallback _listDirectoryCallback;
+	Common::Array<StorageFile> _files;
+	Common::Array<StorageFile> _directoriesQueue;
+	StorageFile _currentDirectory;
+	Request *_workingRequest;
+	bool _ignoreCallback;
+	Common::String _date;
+
+	void start();
+	void idResolvedCallback(const Storage::UploadResponse &response);
+	void idResolveErrorCallback(const Networking::ErrorResponse &error);
+	void listNextDirectory();
+	void listedDirectoryCallback(const Storage::FileArrayResponse &response);
+	void listedDirectoryErrorCallback(const Networking::ErrorResponse &error);
+	void finishListing(const Common::Array<StorageFile> &files);
+public:
+	IdListDirectoryRequest(IdStorage *storage, const Common::String &path, Storage::ListDirectoryCallback cb, Networking::ErrorCallback ecb, bool recursive = false);
+	~IdListDirectoryRequest() override;
+
+	void handle() override;
+	void restart() override;
+	Common::String date() const override;
+};
+
+} // End of namespace Id
+} // End of namespace Cloud
+
+#endif

backends/cloud/id/idresolveidrequest.cpp

@@ -0,0 +1,135 @@
+/* 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/idresolveidrequest.h"
+#include "backends/cloud/id/idstorage.h"
+
+namespace Cloud {
+namespace Id {
+
+IdResolveIdRequest::IdResolveIdRequest(IdStorage *storage, const Common::String &path, Storage::UploadCallback cb, Networking::ErrorCallback ecb, bool recursive):
+	Networking::Request(nullptr, ecb),
+	_requestedPath(path), _storage(storage), _uploadCallback(cb),
+	_workingRequest(nullptr), _ignoreCallback(false) {
+	start();
+}
+
+IdResolveIdRequest::~IdResolveIdRequest() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	delete _uploadCallback;
+}
+
+void IdResolveIdRequest::start() {
+	//cleanup
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	_workingRequest = nullptr;
+	_currentDirectory = "";
+	_currentDirectoryId = _storage->getRootDirectoryId();
+	_ignoreCallback = false;
+
+	listNextDirectory(StorageFile(_currentDirectoryId, 0, 0, true));
+}
+
+void IdResolveIdRequest::listNextDirectory(const StorageFile &fileToReturn) {
+	if (_currentDirectory.equalsIgnoreCase(_requestedPath)) {
+		finishFile(fileToReturn);
+		return;
+	}
+
+	Storage::FileArrayCallback callback = new Common::Callback<IdResolveIdRequest, const Storage::FileArrayResponse &>(this, &IdResolveIdRequest::listedDirectoryCallback);
+	Networking::ErrorCallback failureCallback = new Common::Callback<IdResolveIdRequest, const Networking::ErrorResponse &>(this, &IdResolveIdRequest::listedDirectoryErrorCallback);
+	_workingRequest = _storage->listDirectoryById(_currentDirectoryId, callback, failureCallback);
+}
+
+void IdResolveIdRequest::listedDirectoryCallback(const Storage::FileArrayResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+
+	Common::String currentLevelName = _requestedPath;
+	///debug(9, "'%s'", currentLevelName.c_str());
+	if (_currentDirectory.size())
+		currentLevelName.erase(0, _currentDirectory.size());
+	if (currentLevelName.size() && (currentLevelName[0] == '/' || currentLevelName[0] == '\\'))
+		currentLevelName.erase(0, 1);
+	///debug(9, "'%s'", currentLevelName.c_str());
+	for (uint32 i = 0; i < currentLevelName.size(); ++i) {
+		if (currentLevelName[i] == '/' || currentLevelName[i] == '\\') {
+			currentLevelName.erase(i);
+			///debug(9, "'%s'", currentLevelName.c_str());
+			break;
+		}
+	}
+
+	Common::String path = _currentDirectory;
+	if (path != "")
+		path += "/";
+	path += currentLevelName;
+	bool lastLevel = (path.equalsIgnoreCase(_requestedPath));
+
+	///debug(9, "IdResolveIdRequest: searching for '%s' in '%s'", currentLevelName.c_str(), _currentDirectory.c_str());
+
+	const Common::Array<StorageFile> &files = response.value;
+	bool found = false;
+	for (uint32 i = 0; i < files.size(); ++i) {
+		if ((files[i].isDirectory() || lastLevel) && files[i].name().equalsIgnoreCase(currentLevelName)) {
+			if (_currentDirectory != "")
+				_currentDirectory += "/";
+			_currentDirectory += files[i].name();
+			_currentDirectoryId = files[i].id();
+			///debug(9, "IdResolveIdRequest: found it! new directory and its id: '%s', '%s'", _currentDirectory.c_str(), _currentDirectoryId.c_str());
+			listNextDirectory(files[i]);
+			found = true;
+			break;
+		}
+	}
+
+	if (!found) {
+		if (lastLevel)
+			finishError(Networking::ErrorResponse(this, false, true, Common::String("no such file found in its parent directory\n") + _currentDirectoryId, 404));
+		else
+			finishError(Networking::ErrorResponse(this, false, true, "subdirectory not found", 400));
+	}
+}
+
+void IdResolveIdRequest::listedDirectoryErrorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	finishError(error);
+}
+
+void IdResolveIdRequest::handle() {}
+
+void IdResolveIdRequest::restart() { start(); }
+
+void IdResolveIdRequest::finishFile(const StorageFile &file) {
+	Request::finishSuccess();
+	if (_uploadCallback)
+		(*_uploadCallback)(Storage::UploadResponse(this, file));
+}
+
+} // End of namespace Id
+} // End of namespace Cloud

backends/cloud/id/idresolveidrequest.h

@@ -0,0 +1,59 @@
+/* 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_ID_IDRESOLVEIDREQUEST_H
+#define BACKENDS_CLOUD_ID_IDRESOLVEIDREQUEST_H
+
+#include "backends/cloud/storage.h"
+#include "backends/networking/http/request.h"
+#include "common/callback.h"
+
+namespace Cloud {
+namespace Id {
+
+class IdStorage;
+
+class IdResolveIdRequest: public Networking::Request {
+	Common::String _requestedPath;
+	IdStorage *_storage;
+	Storage::UploadCallback _uploadCallback;
+	Common::String _currentDirectory;
+	Common::String _currentDirectoryId;
+	Request *_workingRequest;
+	bool _ignoreCallback;
+
+	void start();
+	void listNextDirectory(const StorageFile &fileToReturn);
+	void listedDirectoryCallback(const Storage::FileArrayResponse &response);
+	void listedDirectoryErrorCallback(const Networking::ErrorResponse &error);
+	void finishFile(const StorageFile &file);
+public:
+	IdResolveIdRequest(IdStorage *storage, const Common::String &path, Storage::UploadCallback cb, Networking::ErrorCallback ecb, bool recursive = false); //TODO: why upload?
+	~IdResolveIdRequest() override;
+
+	void handle() override;
+	void restart() override;
+};
+
+} // End of namespace Id
+} // End of namespace Cloud
+
+#endif

backends/cloud/id/idstorage.cpp

@@ -0,0 +1,112 @@
+/* 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/idstorage.h"
+#include "backends/cloud/id/idcreatedirectoryrequest.h"
+#include "backends/cloud/id/iddownloadrequest.h"
+#include "backends/cloud/id/idlistdirectoryrequest.h"
+#include "backends/cloud/id/idresolveidrequest.h"
+#include "backends/cloud/id/idstreamfilerequest.h"
+#include "common/debug.h"
+
+namespace Cloud {
+namespace Id {
+
+IdStorage::IdStorage() {}
+
+IdStorage::IdStorage(const Common::String &token, const Common::String &refreshToken, bool enabled):
+	BaseStorage(token, refreshToken, enabled) {}
+
+IdStorage::~IdStorage() {}
+
+void IdStorage::printFiles(const FileArrayResponse &response) {
+	debug(9, "IdStorage: files:");
+	const Common::Array<StorageFile> &files = response.value;
+	for (uint32 i = 0; i < files.size(); ++i) {
+		debug(9, "\t%s%s", files[i].name().c_str(), files[i].isDirectory() ? " (directory)" : "");
+		debug(9, "\t%s", files[i].path().c_str());
+		debug(9, "\t%s", files[i].id().c_str());
+		debug(9, " ");
+	}
+}
+
+void IdStorage::printBool(const BoolResponse &response) {
+	debug(9, "IdStorage: bool: %s", response.value ? "true" : "false");
+}
+
+void IdStorage::printFile(const UploadResponse &response) {
+	debug(9, "\nIdStorage: uploaded file info:");
+	debug(9, "\tid: %s", response.value.path().c_str());
+	debug(9, "\tname: %s", response.value.name().c_str());
+	debug(9, "\tsize: %u", response.value.size());
+	debug(9, "\ttimestamp: %u", response.value.timestamp());
+}
+
+Storage::ListDirectoryCallback IdStorage::getPrintFilesCallback() {
+	return new Common::Callback<IdStorage, const FileArrayResponse &>(this, &IdStorage::printFiles);
+}
+
+Networking::Request *IdStorage::resolveFileId(const Common::String &path, UploadCallback callback, Networking::ErrorCallback errorCallback) {
+	if (!errorCallback)
+		errorCallback = getErrorPrintingCallback();
+	if (!callback)
+		callback = new Common::Callback<IdStorage, const UploadResponse &>(this, &IdStorage::printFile);
+	return addRequest(new IdResolveIdRequest(this, path, callback, errorCallback));
+}
+
+Networking::Request *IdStorage::listDirectory(const Common::String &path, ListDirectoryCallback callback, Networking::ErrorCallback errorCallback, bool recursive) {
+	if (!errorCallback)
+		errorCallback = getErrorPrintingCallback();
+	if (!callback)
+		callback = new Common::Callback<IdStorage, const FileArrayResponse &>(this, &IdStorage::printFiles);
+	return addRequest(new IdListDirectoryRequest(this, path, callback, errorCallback, recursive));
+}
+
+Networking::Request *IdStorage::createDirectory(const Common::String &path, BoolCallback callback, Networking::ErrorCallback errorCallback) {
+	if (!errorCallback)
+		errorCallback = getErrorPrintingCallback();
+	if (!callback)
+		callback = new Common::Callback<IdStorage, const BoolResponse &>(this, &IdStorage::printBool);
+
+	//find out the parent path and directory name
+	Common::String parentPath = "", directoryName = path;
+	for (uint32 i = path.size(); i > 0; --i) {
+		if (path[i - 1] == '/' || path[i - 1] == '\\') {
+			parentPath = path;
+			parentPath.erase(i - 1);
+			directoryName.erase(0, i);
+			break;
+		}
+	}
+
+	return addRequest(new IdCreateDirectoryRequest(this, parentPath, directoryName, callback, errorCallback));
+}
+
+Networking::Request *IdStorage::streamFile(const Common::String &path, Networking::NetworkReadStreamCallback outerCallback, Networking::ErrorCallback errorCallback) {
+	return addRequest(new IdStreamFileRequest(this, path, outerCallback, errorCallback));
+}
+
+Networking::Request *IdStorage::download(const Common::String &remotePath, const Common::Path &localPath, BoolCallback callback, Networking::ErrorCallback errorCallback) {
+	return addRequest(new IdDownloadRequest(this, remotePath, localPath, callback, errorCallback));
+}
+
+} // End of namespace Id
+} // End of namespace Cloud

backends/cloud/id/idstorage.h

@@ -0,0 +1,84 @@
+/* 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_ID_IDSTORAGE_H
+#define BACKENDS_CLOUD_ID_IDSTORAGE_H
+
+#include "backends/cloud/basestorage.h"
+#include "backends/networking/http/httpjsonrequest.h"
+
+/*
+ * Id::IdStorage is a special base class, which is created
+ * to simplify adding new storages which use ids instead of
+ * paths in their API.
+ *
+ * Some Requests are already implemented, and Storage based
+ * on IdStorage needs to override/implement a few basic things.
+ *
+ * For example, ListDirectoryRequest and ResolveIdRequests are
+ * based on listDirectoryById() and getRootDirectoryId() methods.
+ * Implementing these you'll get id resolving and directory
+ * listing by path.
+ */
+
+namespace Cloud {
+namespace Id {
+
+class IdStorage: public Cloud::BaseStorage {
+protected:
+	void printFiles(const FileArrayResponse &response);
+	void printBool(const BoolResponse &response);
+	void printFile(const UploadResponse &response);
+
+	ListDirectoryCallback getPrintFilesCallback();
+
+public:
+	IdStorage();
+	IdStorage(const Common::String &token, const Common::String &refreshToken, bool enabled);
+	~IdStorage() override;
+
+	/** Public Cloud API comes down there. */
+
+	/** Returns StorageFile with the resolved file's id. */
+	virtual Networking::Request *resolveFileId(const Common::String &path, UploadCallback callback, Networking::ErrorCallback errorCallback);
+
+	/** Returns ListDirectoryStatus struct with list of files. */
+	Networking::Request *listDirectory(const Common::String &path, ListDirectoryCallback callback, Networking::ErrorCallback errorCallback, bool recursive = false) override;
+	virtual Networking::Request *listDirectoryById(const Common::String &id, ListDirectoryCallback callback, Networking::ErrorCallback errorCallback) = 0;
+
+	/** Calls the callback when finished. */
+	Networking::Request *createDirectory(const Common::String &path, BoolCallback callback, Networking::ErrorCallback errorCallback) override;
+	virtual Networking::Request *createDirectoryWithParentId(const Common::String &parentId, const Common::String &name, BoolCallback callback, Networking::ErrorCallback errorCallback) = 0;
+
+	/** Returns pointer to Networking::NetworkReadStream. */
+	Networking::Request *streamFile(const Common::String &path, Networking::NetworkReadStreamCallback callback, Networking::ErrorCallback errorCallback) override;
+	virtual Networking::Request *streamFileById(const Common::String &id, Networking::NetworkReadStreamCallback callback, Networking::ErrorCallback errorCallback) override = 0;
+
+	/** Calls the callback when finished. */
+	Networking::Request *download(const Common::String &remotePath, const Common::Path &localPath, BoolCallback callback, Networking::ErrorCallback errorCallback) override;
+
+	virtual Common::String getRootDirectoryId() = 0;
+};
+
+} // End of namespace Id
+} // End of namespace Cloud
+
+#endif

backends/cloud/id/idstreamfilerequest.cpp

@@ -0,0 +1,97 @@
+/* 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

backends/cloud/id/idstreamfilerequest.h

@@ -0,0 +1,58 @@
+/* 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_ID_IDSTREAMFILEREQUEST_H
+#define BACKENDS_CLOUD_ID_IDSTREAMFILEREQUEST_H
+
+#include "backends/cloud/storage.h"
+#include "backends/networking/http/request.h"
+#include "common/callback.h"
+
+namespace Cloud {
+namespace Id {
+
+class IdStorage;
+
+class IdStreamFileRequest: public Networking::Request {
+	Common::String _requestedFile;
+	IdStorage *_storage;
+	Networking::NetworkReadStreamCallback _streamCallback;
+	Request *_workingRequest;
+	bool _ignoreCallback;
+
+	void start();
+	void idResolvedCallback(const Storage::UploadResponse &response);
+	void idResolveFailedCallback(const Networking::ErrorResponse &error);
+	void streamFileCallback(const Networking::NetworkReadStreamResponse &response);
+	void streamFileErrorCallback(const Networking::ErrorResponse &error);
+	void finishStream(Networking::NetworkReadStream *stream);
+public:
+	IdStreamFileRequest(IdStorage *storage, const Common::String &path, Networking::NetworkReadStreamCallback cb, Networking::ErrorCallback ecb);
+	~IdStreamFileRequest() override;
+
+	void handle() override;
+	void restart() override;
+};
+
+} // End of namespace Id
+} // End of namespace Cloud
+
+#endif