aboutsummaryrefslogtreecommitdiff
path: root/backends/cloud/savessyncrequest.cpp
blob: f9b16b355bd6736ab1d46a6c6aa25c8a61642edc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
/* 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/savessyncrequest.h"
#include "backends/cloud/cloudmanager.h"
#include "backends/networking/curl/curljsonrequest.h"
#include "backends/saves/default/default-saves.h"
#include "common/config-manager.h"
#include "common/debug.h"
#include "common/file.h"
#include "common/json.h"
#include "common/savefile.h"
#include "common/system.h"
#include "gui/saveload-dialog.h"

namespace Cloud {

SavesSyncRequest::SavesSyncRequest(Storage *storage, Storage::BoolCallback callback, Networking::ErrorCallback ecb):
	Request(nullptr, ecb), CommandSender(nullptr), _storage(storage), _boolCallback(callback),
	_workingRequest(nullptr), _ignoreCallback(false) {
	start();
}

SavesSyncRequest::~SavesSyncRequest() {
	_ignoreCallback = true;
	if (_workingRequest)
		_workingRequest->finish();
	delete _boolCallback;
}

void SavesSyncRequest::start() {
	//cleanup
	_ignoreCallback = true;
	if (_workingRequest)
		_workingRequest->finish();
	_currentDownloadingFile = StorageFile();
	_currentUploadingFile = "";
	_filesToDownload.clear();
	_filesToUpload.clear();
	_localFilesTimestamps.clear();
	_totalFilesToHandle = 0;
	_ignoreCallback = false;

	//load timestamps
	_localFilesTimestamps = DefaultSaveFileManager::loadTimestamps();

	//list saves directory
	Common::String dir = _storage->savesDirectoryPath();
	if (dir.lastChar() == '/')
		dir.deleteLastChar();
	_workingRequest = _storage->listDirectory(
		dir,
		new Common::Callback<SavesSyncRequest, Storage::ListDirectoryResponse>(this, &SavesSyncRequest::directoryListedCallback),
		new Common::Callback<SavesSyncRequest, Networking::ErrorResponse>(this, &SavesSyncRequest::directoryListedErrorCallback)
	);
	if (!_workingRequest) finishError(Networking::ErrorResponse(this));
}

void SavesSyncRequest::directoryListedCallback(Storage::ListDirectoryResponse response) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;

	if (response.request) _date = response.request->date();

	Common::HashMap<Common::String, bool> localFileNotAvailableInCloud;
	for (Common::HashMap<Common::String, uint32>::iterator i = _localFilesTimestamps.begin(); i != _localFilesTimestamps.end(); ++i) {
		localFileNotAvailableInCloud[i->_key] = true;
	}

	//determine which files to download and which files to upload
	Common::Array<StorageFile> &remoteFiles = response.value;
	uint64 totalSize = 0;
	for (uint32 i = 0; i < remoteFiles.size(); ++i) {
		StorageFile &file = remoteFiles[i];
		if (file.isDirectory())
			continue;
		totalSize += file.size();
		if (file.name() == DefaultSaveFileManager::TIMESTAMPS_FILENAME)
			continue;

		Common::String name = file.name();
		if (!_localFilesTimestamps.contains(name)) {
			_filesToDownload.push_back(file);
		} else {
			localFileNotAvailableInCloud[name] = false;

			if (_localFilesTimestamps[name] == file.timestamp())
				continue;

			//we actually can have some files not only with timestamp < remote
			//but also with timestamp > remote (when we have been using ANOTHER CLOUD and then switched back)
			if (_localFilesTimestamps[name] > file.timestamp() || _localFilesTimestamps[name] == DefaultSaveFileManager::INVALID_TIMESTAMP)
				_filesToUpload.push_back(file.name());
			else
				_filesToDownload.push_back(file);
		}
	}

	CloudMan.setStorageUsedSpace(CloudMan.getStorageIndex(), totalSize);

	//upload files which are unavailable in cloud
	for (Common::HashMap<Common::String, bool>::iterator i = localFileNotAvailableInCloud.begin(); i != localFileNotAvailableInCloud.end(); ++i) {
		if (i->_key == DefaultSaveFileManager::TIMESTAMPS_FILENAME)
			continue;
		if (i->_value)
			_filesToUpload.push_back(i->_key);
	}

	debug(9, "\nSavesSyncRequest: download files:");
	for (uint32 i = 0; i < _filesToDownload.size(); ++i) {
		debug(9, "%s", _filesToDownload[i].name().c_str());
	}
	debug(9, "\nSavesSyncRequest: upload files:");
	for (uint32 i = 0; i < _filesToUpload.size(); ++i) {
		debug(9, "%s", _filesToUpload[i].c_str());
	}
	_totalFilesToHandle = _filesToDownload.size() + _filesToUpload.size();

	//start downloading files
	downloadNextFile();
}

void SavesSyncRequest::directoryListedErrorCallback(Networking::ErrorResponse error) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;

	bool irrecoverable = error.interrupted || error.failed;
	if (error.failed) {
		Common::JSONValue *value = Common::JSON::parse(error.response.c_str());
		if (value) {
			if (value->isObject()) {
				Common::JSONObject object = value->asObject();

				//Dropbox-related error:
				if (object.contains("error_summary") && object.getVal("error_summary")->isString()) {
					Common::String summary = object.getVal("error_summary")->asString();
					if (summary.contains("not_found")) {
						irrecoverable = false;
					}
				}

				//OneDrive-related error:
				if (object.contains("error") && object.getVal("error")->isObject()) {
					Common::JSONObject errorNode = object.getVal("error")->asObject();
					if (Networking::CurlJsonRequest::jsonContainsString(errorNode, "code", "SavesSyncRequest")) {
						Common::String code = errorNode.getVal("code")->asString();
						if (code == "itemNotFound") {
							irrecoverable = false;
						}
					}
				}
			}
			delete value;
		}

		//Google Drive and Box-related ScummVM-based error
		if (error.response.contains("subdirectory not found")) {
			irrecoverable = false; //base "/ScummVM/" folder not found
		} else if (error.response.contains("no such file found in its parent directory")) {
			irrecoverable = false; //"Saves" folder within "/ScummVM/" not found
		}
	}

	if (irrecoverable) {
		finishError(error);
		return;
	}

	//we're lucky - user just lacks his "/cloud/" folder - let's create one
	Common::String dir = _storage->savesDirectoryPath();
	if (dir.lastChar() == '/')
		dir.deleteLastChar();
	debug(9, "SavesSyncRequest: creating %s", dir.c_str());
	_workingRequest = _storage->createDirectory(
		dir,
		new Common::Callback<SavesSyncRequest, Storage::BoolResponse>(this, &SavesSyncRequest::directoryCreatedCallback),
		new Common::Callback<SavesSyncRequest, Networking::ErrorResponse>(this, &SavesSyncRequest::directoryCreatedErrorCallback)
	);
	if (!_workingRequest)
		finishError(Networking::ErrorResponse(this));
}

void SavesSyncRequest::directoryCreatedCallback(Storage::BoolResponse response) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;

	//stop syncing if failed to create saves directory
	if (!response.value) {
		finishError(Networking::ErrorResponse(this, false, true, "", -1));
		return;
	}

	//continue with empty files list
	Common::Array<StorageFile> files;
	directoryListedCallback(Storage::ListDirectoryResponse(response.request, files));
}

void SavesSyncRequest::directoryCreatedErrorCallback(Networking::ErrorResponse error) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;

	//stop syncing if failed to create saves directory
	finishError(error);
}

void SavesSyncRequest::downloadNextFile() {
	if (_filesToDownload.empty()) {
		_currentDownloadingFile = StorageFile("", 0, 0, false); //so getFilesToDownload() would return an empty array
		sendCommand(GUI::kSavesSyncEndedCmd, 0);
		uploadNextFile();
		return;
	}

	_currentDownloadingFile = _filesToDownload.back();
	_filesToDownload.pop_back();

	sendCommand(GUI::kSavesSyncProgressCmd, (int)(getDownloadingProgress() * 100));

	debug(9, "SavesSyncRequest: downloading %s (%d %%)", _currentDownloadingFile.name().c_str(), (int)(getProgress() * 100));
	_workingRequest = _storage->downloadById(
		_currentDownloadingFile.id(),
		DefaultSaveFileManager::concatWithSavesPath(_currentDownloadingFile.name()),
		new Common::Callback<SavesSyncRequest, Storage::BoolResponse>(this, &SavesSyncRequest::fileDownloadedCallback),
		new Common::Callback<SavesSyncRequest, Networking::ErrorResponse>(this, &SavesSyncRequest::fileDownloadedErrorCallback)
	);
	if (!_workingRequest)
		finishError(Networking::ErrorResponse(this));
}

void SavesSyncRequest::fileDownloadedCallback(Storage::BoolResponse response) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;

	//stop syncing if download failed
	if (!response.value) {
		//delete the incomplete file
		g_system->getSavefileManager()->removeSavefile(_currentDownloadingFile.name());
		finishError(Networking::ErrorResponse(this, false, true, "", -1));
		return;
	}

	//update local timestamp for downloaded file
	_localFilesTimestamps = DefaultSaveFileManager::loadTimestamps();
	_localFilesTimestamps[_currentDownloadingFile.name()] = _currentDownloadingFile.timestamp();
	DefaultSaveFileManager::saveTimestamps(_localFilesTimestamps);

	//continue downloading files
	downloadNextFile();
}

void SavesSyncRequest::fileDownloadedErrorCallback(Networking::ErrorResponse error) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;

	//stop syncing if download failed
	finishError(error);
}

void SavesSyncRequest::uploadNextFile() {
	if (_filesToUpload.empty()) {
		finishSync(true);
		return;
	}

	_currentUploadingFile = _filesToUpload.back();
	_filesToUpload.pop_back();

	debug(9, "SavesSyncRequest: uploading %s (%d %%)", _currentUploadingFile.c_str(), (int)(getProgress() * 100));
	if (_storage->uploadStreamSupported()) {
		_workingRequest = _storage->upload(
			_storage->savesDirectoryPath() + _currentUploadingFile,
			g_system->getSavefileManager()->openRawFile(_currentUploadingFile),
			new Common::Callback<SavesSyncRequest, Storage::UploadResponse>(this, &SavesSyncRequest::fileUploadedCallback),
			new Common::Callback<SavesSyncRequest, Networking::ErrorResponse>(this, &SavesSyncRequest::fileUploadedErrorCallback)
		);
	} else {
		_workingRequest = _storage->upload(
			_storage->savesDirectoryPath() + _currentUploadingFile,
			DefaultSaveFileManager::concatWithSavesPath(_currentUploadingFile),
			new Common::Callback<SavesSyncRequest, Storage::UploadResponse>(this, &SavesSyncRequest::fileUploadedCallback),
			new Common::Callback<SavesSyncRequest, Networking::ErrorResponse>(this, &SavesSyncRequest::fileUploadedErrorCallback)
		);
	}
	if (!_workingRequest) finishError(Networking::ErrorResponse(this));
}

void SavesSyncRequest::fileUploadedCallback(Storage::UploadResponse response) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;

	//update local timestamp for the uploaded file
	_localFilesTimestamps = DefaultSaveFileManager::loadTimestamps();
	_localFilesTimestamps[_currentUploadingFile] = response.value.timestamp();
	DefaultSaveFileManager::saveTimestamps(_localFilesTimestamps);

	//continue uploading files
	uploadNextFile();
}

void SavesSyncRequest::fileUploadedErrorCallback(Networking::ErrorResponse error) {
	_workingRequest = nullptr;
	if (_ignoreCallback)
		return;

	//stop syncing if upload failed
	finishError(error);
}

void SavesSyncRequest::handle() {}

void SavesSyncRequest::restart() { start(); }

double SavesSyncRequest::getDownloadingProgress() const {
	if (_totalFilesToHandle == 0) {
		if (_state == Networking::FINISHED)
			return 1; //nothing to upload and download => Request ends soon
		return 0; //directory not listed yet
	}

	if (_totalFilesToHandle == _filesToUpload.size())
		return 1; //nothing to download => download complete

	uint32 totalFilesToDownload = _totalFilesToHandle - _filesToUpload.size();
	uint32 filesLeftToDownload = _filesToDownload.size() + (_currentDownloadingFile.name() != "" ? 1 : 0);
	return (double)(totalFilesToDownload - filesLeftToDownload) / (double)(totalFilesToDownload);
}

double SavesSyncRequest::getProgress() const {
	if (_totalFilesToHandle == 0) {
		if (_state == Networking::FINISHED)
			return 1; //nothing to upload and download => Request ends soon
		return 0; //directory not listed yet
	}

	return (double)(_totalFilesToHandle - _filesToDownload.size() - _filesToUpload.size()) / (double)(_totalFilesToHandle);
}

Common::Array<Common::String> SavesSyncRequest::getFilesToDownload() {
	Common::Array<Common::String> result;
	for (uint32 i = 0; i < _filesToDownload.size(); ++i)
		result.push_back(_filesToDownload[i].name());
	if (_currentDownloadingFile.name() != "")
		result.push_back(_currentDownloadingFile.name());
	return result;
}

void SavesSyncRequest::finishError(Networking::ErrorResponse error) {
	debug(9, "SavesSync::finishError");
	//if we were downloading a file - remember the name
	//and make the Request close() it, so we can delete it
	Common::String name = _currentDownloadingFile.name();
	if (_workingRequest) {
		_ignoreCallback = true;
		_workingRequest->finish();
		_workingRequest = nullptr;
		_ignoreCallback = false;
	}
	//unlock all the files by making getFilesToDownload() return empty array
	_currentDownloadingFile = StorageFile();
	_filesToDownload.clear();
	//delete the incomplete file
	if (name != "")
		g_system->getSavefileManager()->removeSavefile(name);
	Request::finishError(error);
}

void SavesSyncRequest::finishSync(bool success) {
	Request::finishSuccess();

	//update last successful sync date
	CloudMan.setStorageLastSync(CloudMan.getStorageIndex(), _date);

	if (_boolCallback)
		(*_boolCallback)(Storage::BoolResponse(this, success));
}

} // End of namespace Cloud