Initial commit

backends/cloud/googledrive/googledrivelistdirectorybyidrequest.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/googledrive/googledrivelistdirectorybyidrequest.h"
+#include "backends/cloud/googledrive/googledrivestorage.h"
+#include "backends/cloud/iso8601.h"
+#include "backends/cloud/storage.h"
+#include "backends/networking/http/connectionmanager.h"
+#include "backends/networking/http/httpjsonrequest.h"
+#include "backends/networking/http/networkreadstream.h"
+#include "common/formats/json.h"
+#include "googledrivetokenrefresher.h"
+
+namespace Cloud {
+namespace GoogleDrive {
+
+#define GOOGLEDRIVE_API_FILES "https://www.googleapis.com/drive/v3/files?spaces=drive&fields=files%28id,mimeType,modifiedTime,name,size%29,nextPageToken&orderBy=folder,name"
+//files(id,mimeType,modifiedTime,name,size),nextPageToken
+
+GoogleDriveListDirectoryByIdRequest::GoogleDriveListDirectoryByIdRequest(GoogleDriveStorage *storage, const Common::String &id, Storage::ListDirectoryCallback cb, Networking::ErrorCallback ecb):
+	Networking::Request(nullptr, ecb), _requestedId(id), _storage(storage), _listDirectoryCallback(cb),
+	_workingRequest(nullptr), _ignoreCallback(false) {
+	start();
+}
+
+GoogleDriveListDirectoryByIdRequest::~GoogleDriveListDirectoryByIdRequest() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	delete _listDirectoryCallback;
+}
+
+void GoogleDriveListDirectoryByIdRequest::start() {
+	_ignoreCallback = true;
+	if (_workingRequest)
+		_workingRequest->finish();
+	_files.clear();
+	_ignoreCallback = false;
+
+	makeRequest("");
+}
+
+void GoogleDriveListDirectoryByIdRequest::makeRequest(const Common::String &pageToken) {
+	Common::String url = GOOGLEDRIVE_API_FILES;
+	if (pageToken != "")
+		url += "&pageToken=" + pageToken;
+	url += "&q=%27" + _requestedId + "%27+in+parents";
+
+	Networking::JsonCallback callback = new Common::Callback<GoogleDriveListDirectoryByIdRequest, const Networking::JsonResponse &>(this, &GoogleDriveListDirectoryByIdRequest::responseCallback);
+	Networking::ErrorCallback failureCallback = new Common::Callback<GoogleDriveListDirectoryByIdRequest, const Networking::ErrorResponse &>(this, &GoogleDriveListDirectoryByIdRequest::errorCallback);
+	Networking::HttpJsonRequest *request = new GoogleDriveTokenRefresher(_storage, callback, failureCallback, url.c_str());
+	request->addHeader("Authorization: Bearer " + _storage->accessToken());
+	_workingRequest = ConnMan.addRequest(request);
+}
+
+void GoogleDriveListDirectoryByIdRequest::responseCallback(const Networking::JsonResponse &response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) {
+		delete response.value;
+		return;
+	}
+	if (response.request)
+		_date = response.request->date();
+
+	Networking::ErrorResponse error(this, "GoogleDriveListDirectoryByIdRequest::responseCallback");
+	const Networking::HttpJsonRequest *rq = (const Networking::HttpJsonRequest *)response.request;
+	if (rq && rq->getNetworkReadStream())
+		error.httpResponseCode = rq->getNetworkReadStream()->httpResponseCode();
+
+	const Common::JSONValue *json = response.value;
+	if (json) {
+		Common::JSONObject responseObject = json->asObject();
+
+		///debug("%s", json->stringify(true).c_str());
+
+		if (responseObject.contains("error") || responseObject.contains("error_summary")) {
+			warning("GoogleDrive returned error: %s", responseObject.getVal("error_summary")->asString().c_str());
+			error.failed = true;
+			error.response = json->stringify();
+			finishError(error);
+			delete json;
+			return;
+		}
+
+		//TODO: check that ALL keys exist AND HAVE RIGHT TYPE to avoid segfaults
+
+		if (responseObject.contains("files") && responseObject.getVal("files")->isArray()) {
+			Common::JSONArray items = responseObject.getVal("files")->asArray();
+			for (uint32 i = 0; i < items.size(); ++i) {
+				Common::JSONObject item = items[i]->asObject();
+				Common::String id = item.getVal("id")->asString();
+				Common::String name = item.getVal("name")->asString();
+				bool isDirectory = (item.getVal("mimeType")->asString() == "application/vnd.google-apps.folder");
+				uint32 size = 0, timestamp = 0;
+				if (item.contains("size") && item.getVal("size")->isString())
+					size = item.getVal("size")->asString().asUint64();
+				if (item.contains("modifiedTime") && item.getVal("modifiedTime")->isString())
+					timestamp = ISO8601::convertToTimestamp(item.getVal("modifiedTime")->asString());
+
+				//as we list directory by id, we can't determine full path for the file, so we leave it empty
+				_files.push_back(StorageFile(id, "", name, size, timestamp, isDirectory));
+			}
+		}
+
+		bool hasMore = (responseObject.contains("nextPageToken"));
+
+		if (hasMore) {
+			Common::String token = responseObject.getVal("nextPageToken")->asString();
+			makeRequest(token);
+		} else {
+			finishListing(_files);
+		}
+	} else {
+		warning("null, not json");
+		error.failed = true;
+		finishError(error);
+	}
+
+	delete json;
+}
+
+void GoogleDriveListDirectoryByIdRequest::errorCallback(const Networking::ErrorResponse &error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback)
+		return;
+	if (error.request)
+		_date = error.request->date();
+	finishError(error);
+}
+
+void GoogleDriveListDirectoryByIdRequest::handle() {}
+
+void GoogleDriveListDirectoryByIdRequest::restart() { start(); }
+
+Common::String GoogleDriveListDirectoryByIdRequest::date() const { return _date; }
+
+void GoogleDriveListDirectoryByIdRequest::finishListing(Common::Array<StorageFile> &files) {
+	Request::finishSuccess();
+	if (_listDirectoryCallback)
+		(*_listDirectoryCallback)(Storage::ListDirectoryResponse(this, files));
+}
+
+} // End of namespace GoogleDrive
+} // End of namespace Cloud