CLOUD: Add IdDownloadRequest and IdStreamFileRequest

Used for downloading files in Box.

8 files changed, 331 insertions, 9 deletions

diff --git a/backends/cloud/box/boxstorage.cpp b/backends/cloud/box/boxstorage.cpp
index 5bbe377163..1fbe2f17aa 100644
--- a/backends/cloud/box/boxstorage.cpp
+++ b/backends/cloud/box/boxstorage.cpp
@@ -249,15 +249,18 @@ Networking::Request *BoxStorage::upload(Common::String path, Common::SeekableRea
 	return nullptr; //TODO
 }
 
-Networking::Request *BoxStorage::streamFileById(Common::String path, Networking::NetworkReadStreamCallback outerCallback, Networking::ErrorCallback errorCallback) {
-	/*
-	Common::String url = "https://api.Box.com/v1.0/drive/special/approot:/" + ConnMan.urlEncode(path);
-	Networking::JsonCallback innerCallback = new Common::CallbackBridge<BoxStorage, Networking::NetworkReadStreamResponse, Networking::JsonResponse>(this, &BoxStorage::fileInfoCallback, outerCallback);
-	Networking::CurlJsonRequest *request = new BoxTokenRefresher(this, innerCallback, errorCallback, url.c_str());
-	request->addHeader("Authorization: Bearer " + _token);
-	return addRequest(request);
-	*/
-	return nullptr; //TODO
+Networking::Request *BoxStorage::streamFileById(Common::String id, Networking::NetworkReadStreamCallback callback, Networking::ErrorCallback errorCallback) {
+	if (callback) {
+		Common::String url = "https://api.box.com/2.0/files/" + id + "/content";
+		debug("%s", url.c_str());
+		Common::String header = "Authorization: Bearer " + _token;
+		curl_slist *headersList = curl_slist_append(nullptr, header.c_str());
+		Networking::NetworkReadStream *stream = new Networking::NetworkReadStream(url.c_str(), headersList, "");
+		(*callback)(Networking::NetworkReadStreamResponse(nullptr, stream));
+	}
+	delete callback;
+	delete errorCallback;
+	return nullptr;
 }
 
 void BoxStorage::fileDownloaded(BoolResponse response) {
diff --git a/backends/cloud/id/iddownloadrequest.cpp b/backends/cloud/id/iddownloadrequest.cpp
new file mode 100644
index 0000000000..154bd16edd
--- /dev/null
+++ b/backends/cloud/id/iddownloadrequest.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/id/iddownloadrequest.h"
+#include "backends/cloud/id/idstorage.h"
+
+namespace Cloud {
+namespace Id {
+
+IdDownloadRequest::IdDownloadRequest(IdStorage *storage, Common::String remotePath, Common::String 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, Storage::UploadResponse>(this, &IdDownloadRequest::idResolvedCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdDownloadRequest, Networking::ErrorResponse>(this, &IdDownloadRequest::idResolveFailedCallback);	
+	_workingRequest = _storage->resolveFileId(_requestedFile, innerCallback, innerErrorCallback);
+}
+
+void IdDownloadRequest::idResolvedCallback(Storage::UploadResponse response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+
+	Storage::BoolCallback innerCallback = new Common::Callback<IdDownloadRequest, Storage::BoolResponse>(this, &IdDownloadRequest::downloadCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdDownloadRequest, Networking::ErrorResponse>(this, &IdDownloadRequest::downloadErrorCallback);
+	_workingRequest = _storage->downloadById(response.value.id(), _requestedLocalFile, innerCallback, innerErrorCallback);
+}
+
+void IdDownloadRequest::idResolveFailedCallback(Networking::ErrorResponse error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+	finishError(error);
+}
+
+void IdDownloadRequest::downloadCallback(Storage::BoolResponse response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+	finishDownload(response.value);
+}
+
+void IdDownloadRequest::downloadErrorCallback(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));
+}
+
+} // End of namespace Id
+} // End of namespace Cloud
diff --git a/backends/cloud/id/iddownloadrequest.h b/backends/cloud/id/iddownloadrequest.h
new file mode 100644
index 0000000000..70397696a8
--- /dev/null
+++ b/backends/cloud/id/iddownloadrequest.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 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.
+*
+*/
+
+#ifndef BACKENDS_CLOUD_ID_IDDOWNLOADREQUEST_H
+#define BACKENDS_CLOUD_ID_IDDOWNLOADREQUEST_H
+
+#include "backends/cloud/storage.h"
+#include "backends/networking/curl/request.h"
+#include "common/callback.h"
+
+namespace Cloud {
+namespace Id {
+
+class IdStorage;
+
+class IdDownloadRequest: public Networking::Request {
+	Common::String _requestedFile, _requestedLocalFile;
+	IdStorage *_storage;
+	Storage::BoolCallback _boolCallback;
+	Request *_workingRequest;
+	bool _ignoreCallback;
+
+	void start();
+	void idResolvedCallback(Storage::UploadResponse response);
+	void idResolveFailedCallback(Networking::ErrorResponse error);
+	void downloadCallback(Storage::BoolResponse response);
+	void downloadErrorCallback(Networking::ErrorResponse error);
+	void finishDownload(bool success);
+public:
+	IdDownloadRequest(IdStorage *storage, Common::String remotePath, Common::String localPath, Storage::BoolCallback cb, Networking::ErrorCallback ecb);
+	virtual ~IdDownloadRequest();
+
+	virtual void handle();
+	virtual void restart();
+};
+
+} // End of namespace Id
+} // End of namespace Cloud
+
+#endif
diff --git a/backends/cloud/id/idstorage.cpp b/backends/cloud/id/idstorage.cpp
index f26dee4692..3aeb5146cd 100644
--- a/backends/cloud/id/idstorage.cpp
+++ b/backends/cloud/id/idstorage.cpp
@@ -23,8 +23,10 @@
 
 #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"
 #include "common/json.h"
 
@@ -101,5 +103,13 @@ Networking::Request *IdStorage::createDirectory(Common::String path, BoolCallbac
 	return addRequest(new IdCreateDirectoryRequest(this, parentPath, directoryName, callback, errorCallback));
 }
 
+Networking::Request *IdStorage::streamFile(Common::String path, Networking::NetworkReadStreamCallback outerCallback, Networking::ErrorCallback errorCallback) {
+	return addRequest(new IdStreamFileRequest(this, path, outerCallback, errorCallback));
+}
+
+Networking::Request *IdStorage::download(Common::String remotePath, Common::String localPath, BoolCallback callback, Networking::ErrorCallback errorCallback) {
+	return addRequest(new IdDownloadRequest(this, remotePath, localPath, callback, errorCallback));
+}
+
 } // End of namespace Id
 } // End of namespace Cloud
diff --git a/backends/cloud/id/idstorage.h b/backends/cloud/id/idstorage.h
index a657f5cd95..88853e4ad8 100644
--- a/backends/cloud/id/idstorage.h
+++ b/backends/cloud/id/idstorage.h
@@ -68,6 +68,13 @@ public:
 	virtual Networking::Request *createDirectory(Common::String path, BoolCallback callback, Networking::ErrorCallback errorCallback);
 	virtual Networking::Request *createDirectoryWithParentId(Common::String parentId, Common::String name, BoolCallback callback, Networking::ErrorCallback errorCallback) = 0;
 
+	/** Returns pointer to Networking::NetworkReadStream. */
+	virtual Networking::Request *streamFile(Common::String path, Networking::NetworkReadStreamCallback callback, Networking::ErrorCallback errorCallback);
+	virtual Networking::Request *streamFileById(Common::String id, Networking::NetworkReadStreamCallback callback, Networking::ErrorCallback errorCallback) = 0;
+
+	/** Calls the callback when finished. */
+	virtual Networking::Request *download(Common::String remotePath, Common::String localPath, BoolCallback callback, Networking::ErrorCallback errorCallback);
+
 	virtual Common::String getRootDirectoryId() = 0;
 };
 
diff --git a/backends/cloud/id/idstreamfilerequest.cpp b/backends/cloud/id/idstreamfilerequest.cpp
new file mode 100644
index 0000000000..08060b9e40
--- /dev/null
+++ b/backends/cloud/id/idstreamfilerequest.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/id/idstreamfilerequest.h"
+#include "backends/cloud/id/idstorage.h"
+
+namespace Cloud {
+namespace Id {
+
+IdStreamFileRequest::IdStreamFileRequest(IdStorage *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();
+}
+
+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, Storage::UploadResponse>(this, &IdStreamFileRequest::idResolvedCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdStreamFileRequest, Networking::ErrorResponse>(this, &IdStreamFileRequest::idResolveFailedCallback);	
+	_workingRequest = _storage->resolveFileId(_requestedFile, innerCallback, innerErrorCallback);
+}
+
+void IdStreamFileRequest::idResolvedCallback(Storage::UploadResponse response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+
+	Networking::NetworkReadStreamCallback innerCallback = new Common::Callback<IdStreamFileRequest, Networking::NetworkReadStreamResponse>(this, &IdStreamFileRequest::streamFileCallback);
+	Networking::ErrorCallback innerErrorCallback = new Common::Callback<IdStreamFileRequest, Networking::ErrorResponse>(this, &IdStreamFileRequest::streamFileErrorCallback);
+	_workingRequest = _storage->streamFileById(response.value.id(), innerCallback, innerErrorCallback);
+}
+
+void IdStreamFileRequest::idResolveFailedCallback(Networking::ErrorResponse error) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+	finishError(error);
+}
+
+void IdStreamFileRequest::streamFileCallback(Networking::NetworkReadStreamResponse response) {
+	_workingRequest = nullptr;
+	if (_ignoreCallback) return;
+	finishStream(response.value);
+}
+
+void IdStreamFileRequest::streamFileErrorCallback(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
diff --git a/backends/cloud/id/idstreamfilerequest.h b/backends/cloud/id/idstreamfilerequest.h
new file mode 100644
index 0000000000..20d7c0c25b
--- /dev/null
+++ b/backends/cloud/id/idstreamfilerequest.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 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.
+*
+*/
+
+#ifndef BACKENDS_CLOUD_ID_IDSTREAMFILEREQUEST_H
+#define BACKENDS_CLOUD_ID_IDSTREAMFILEREQUEST_H
+
+#include "backends/cloud/storage.h"
+#include "backends/networking/curl/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(Storage::UploadResponse response);
+	void idResolveFailedCallback(Networking::ErrorResponse error);
+	void streamFileCallback(Networking::NetworkReadStreamResponse response);
+	void streamFileErrorCallback(Networking::ErrorResponse error);
+	void finishStream(Networking::NetworkReadStream *stream);
+public:
+	IdStreamFileRequest(IdStorage *storage, Common::String path, Networking::NetworkReadStreamCallback cb, Networking::ErrorCallback ecb);
+	virtual ~IdStreamFileRequest();
+
+	virtual void handle();
+	virtual void restart();
+};
+
+} // End of namespace Id
+} // End of namespace Cloud
+
+#endif
diff --git a/backends/module.mk b/backends/module.mk
index 617611932e..67246b8b02 100644
--- a/backends/module.mk
+++ b/backends/module.mk
@@ -46,8 +46,10 @@ MODULE_OBJS += \
 	cloud/googledrive/googledriveuploadrequest.o \
 	cloud/id/idstorage.o \
 	cloud/id/idcreatedirectoryrequest.o \
+	cloud/id/iddownloadrequest.o \
 	cloud/id/idlistdirectoryrequest.o \
 	cloud/id/idresolveidrequest.o \
+	cloud/id/idstreamfilerequest.o \
 	cloud/onedrive/onedrivestorage.o \
 	cloud/onedrive/onedrivecreatedirectoryrequest.o \
 	cloud/onedrive/onedrivetokenrefresher.o \