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backends/cloud/googledrive/googledrivestorage.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_GOOGLEDRIVE_GOOGLEDRIVESTORAGE_H
+#define BACKENDS_CLOUD_GOOGLEDRIVE_GOOGLEDRIVESTORAGE_H
+
+#include "backends/cloud/id/idstorage.h"
+#include "backends/networking/http/httpjsonrequest.h"
+
+namespace Cloud {
+namespace GoogleDrive {
+
+class GoogleDriveStorage: public Id::IdStorage {
+	/** This private constructor is called from loadFromConfig(). */
+	GoogleDriveStorage(const Common::String &token, const Common::String &refreshToken, bool enabled);
+
+	/** Constructs StorageInfo based on JSON response from cloud. */
+	void infoInnerCallback(StorageInfoCallback outerCallback, const Networking::JsonResponse &json);
+
+	/** Returns bool based on JSON response from cloud. */
+	void createDirectoryInnerCallback(BoolCallback outerCallback, const Networking::JsonResponse &json);
+
+	void printInfo(const StorageInfoResponse &response);
+
+protected:
+	/**
+	 * @return "gdrive"
+	 */
+	Common::String cloudProvider() override;
+
+	/**
+	 * @return kStorageGoogleDriveId
+	 */
+	uint32 storageIndex() override;
+
+	bool needsRefreshToken() override;
+
+	bool canReuseRefreshToken() override;
+
+public:
+	/** This constructor uses OAuth code flow to get tokens. */
+	GoogleDriveStorage(const Common::String &code, Networking::ErrorCallback cb);
+
+	/** This constructor extracts tokens from JSON acquired via OAuth code flow. */
+	GoogleDriveStorage(const Networking::JsonResponse &codeFlowJson, Networking::ErrorCallback cb);
+
+	~GoogleDriveStorage() override;
+
+	/**
+	 * Storage methods, which are used by CloudManager to save
+	 * storage in configuration file.
+	 */
+
+	/**
+	 * Save storage data using ConfMan.
+	 * @param keyPrefix all saved keys must start with this prefix.
+	 * @note every Storage must write keyPrefix + "type" key
+	 *       with common value (e.g. "Dropbox").
+	 */
+	void saveConfig(const Common::String &keyPrefix) override;
+
+	/**
+	* Return unique storage name.
+	* @returns  some unique storage name (for example, "Dropbox (user@example.com)")
+	*/
+	Common::String name() const override;
+
+	/** Public Cloud API comes down there. */
+
+	/** Returns Array<StorageFile> - the list of files. */
+	Networking::Request *listDirectoryById(const Common::String &id, ListDirectoryCallback callback, Networking::ErrorCallback errorCallback) override;
+
+	/** Returns UploadStatus struct with info about uploaded file. */
+	Networking::Request *upload(const Common::String &path, Common::SeekableReadStream *contents, UploadCallback callback, Networking::ErrorCallback errorCallback) override;
+
+	/** Returns pointer to Networking::NetworkReadStream. */
+	Networking::Request *streamFileById(const Common::String &id, Networking::NetworkReadStreamCallback callback, Networking::ErrorCallback errorCallback) override;
+
+	/** Calls the callback when finished. */
+	Networking::Request *createDirectoryWithParentId(const Common::String &parentId, const Common::String &directoryName, BoolCallback callback, Networking::ErrorCallback errorCallback) override;
+
+	/** Returns the StorageInfo struct. */
+	Networking::Request *info(StorageInfoCallback callback, Networking::ErrorCallback errorCallback) override;
+
+	/** Returns storage's saves directory path with the trailing slash. */
+	Common::String savesDirectoryPath() override;
+
+	/**
+	 * Load token and user id from configs and return GoogleDriveStorage for those.
+	 * @return pointer to the newly created GoogleDriveStorage or 0 if some problem occurred.
+	 */
+	static GoogleDriveStorage *loadFromConfig(const Common::String &keyPrefix);
+
+	/**
+	 * Remove all GoogleDriveStorage-related data from config.
+	 */
+	static void removeFromConfig(const Common::String &keyPrefix);
+
+	Common::String getRootDirectoryId() override;
+
+	Common::String accessToken() const { return _token; }
+};
+
+} // End of namespace GoogleDrive
+} // End of namespace Cloud
+
+#endif