/// <inheritdoc/>
public override Task Run()
{
if (StoryBoard.Mode.ShouldUseGui())
{
SerializeableCloudStorageCredentials credentials = StoryBoard.LoadFromSession <SerializeableCloudStorageCredentials>(SynchronizationStorySessionKey.CloudStorageCredentials.ToInt());
ICloudStorageClient cloudStorageClient = _cloudStorageClientFactory.GetOrCreate(credentials.CloudStorageId);
if (cloudStorageClient is IOAuth2CloudStorageClient oauthStorageClient)
{
// Show waiting page
_navigationService.Navigate(ControllerNames.CloudStorageOauthWaiting);
// Open OAuth2 login page in external browser
string oauthState = CryptoUtils.GenerateRandomBase62String(16, _randomSource);
string oauthCodeVerifier = CryptoUtils.GenerateRandomBase62String(64, _randomSource);
StoryBoard.StoreToSession(SynchronizationStorySessionKey.OauthState.ToInt(), oauthState);
StoryBoard.StoreToSession(SynchronizationStorySessionKey.OauthCodeVerifier.ToInt(), oauthCodeVerifier);
string url = oauthStorageClient.BuildAuthorizationRequestUrl(oauthState, oauthCodeVerifier);
_nativeBrowserService.OpenWebsiteInApp(url);
}
else
{
_navigationService.Navigate(ControllerNames.CloudStorageAccount);
}
}
return(Task.CompletedTask);
}
/// <inheritdoc/>
public override async Task Run()
{
SerializeableCloudStorageCredentials credentials = StoryBoard.LoadFromSession <SerializeableCloudStorageCredentials>(SynchronizationStorySessionKey.CloudStorageCredentials.ToInt());
ICloudStorageClient cloudStorageClient = _cloudStorageClientFactory.GetOrCreate(credentials.CloudStorageId);
try
{
bool stopBecauseNewOAuthLoginIsRequired = false;
if ((cloudStorageClient is OAuth2CloudStorageClient oauthStorageClient) &&
credentials.Token.NeedsRefresh())
{
try
{
// Get a new access token by using the refresh token
credentials.Token = await oauthStorageClient.RefreshTokenAsync(credentials.Token);
SaveCredentialsToSettings(credentials);
}
catch (RefreshTokenExpiredException)
{
// Refresh-token cannot be used to get new access-tokens anymore, a new
// authorization by the user is required.
stopBecauseNewOAuthLoginIsRequired = true;
switch (StoryBoard.Mode)
{
case StoryBoardMode.GuiAndToasts:
await StoryBoard.ContinueWith(SynchronizationStoryStepId.ShowCloudStorageAccount.ToInt());
break;
case StoryBoardMode.ToastsOnly:
_feedbackService.ShowToast(_languageService["sync_error_generic"]);
break;
}
}
}
if (!stopBecauseNewOAuthLoginIsRequired)
{
bool repositoryExists = await cloudStorageClient.ExistsFileAsync(Config.RepositoryFileName, credentials);
// If no error occured the credentials are ok and we can safe them
SaveCredentialsToSettings(credentials);
if (repositoryExists)
{
await StoryBoard.ContinueWith(SynchronizationStoryStepId.DownloadCloudRepository.ToInt());
}
else
{
await StoryBoard.ContinueWith(SynchronizationStoryStepId.StoreLocalRepositoryToCloudAndQuit.ToInt());
}
}
}
catch (Exception ex)
{
// Keep the current page open and show the error message
ShowExceptionMessage(ex, _feedbackService, _languageService);
}
}
public override async Task Run()
{
try
{
if (!StoryBoard.TryLoadFromSession(SynchronizationStorySessionKey.CloudStorageCredentials, out SerializeableCloudStorageCredentials credentials))
{
throw new ArgumentNullException(nameof(credentials));
}
if (!StoryBoard.TryLoadFromSession(SynchronizationStorySessionKey.OauthState, out string oauthState))
{
throw new ArgumentNullException(nameof(oauthState));
}
if (!StoryBoard.TryLoadFromSession(SynchronizationStorySessionKey.OauthCodeVerifier, out string oauthCodeVerifier))
{
throw new ArgumentNullException(nameof(oauthState));
}
if (!StoryBoard.TryLoadFromSession(SynchronizationStorySessionKey.OauthRedirectUrl, out string redirectUrl))
{
throw new ArgumentNullException(nameof(redirectUrl));
}
StoryBoard.RemoveFromSession(SynchronizationStorySessionKey.OauthState);
StoryBoard.RemoveFromSession(SynchronizationStorySessionKey.OauthCodeVerifier);
StoryBoard.RemoveFromSession(SynchronizationStorySessionKey.OauthRedirectUrl);
ICloudStorageClient cloudStorageClient = _cloudStorageClientFactory.GetOrCreate(credentials.CloudStorageId);
if (cloudStorageClient is IOAuth2CloudStorageClient oauthStorageClient)
{
CloudStorageToken token = await oauthStorageClient.FetchTokenAsync(redirectUrl, oauthState, oauthCodeVerifier);
if (token != null)
{
// User has granted access.
credentials.Token = token;
await StoryBoard.ContinueWith(SynchronizationStoryStepId.ExistsCloudRepository);
}
else
{
// User has rejected access.
_feedbackService.ShowToast(_languageService.LoadText("sync_reject"));
await StoryBoard.ContinueWith(SynchronizationStoryStepId.StopAndShowRepository);
}
}
}
catch (Exception ex)
{
// Keep the current page open and show the error message
ShowExceptionMessage(ex, _feedbackService, _languageService);
}
}
private async Task <bool> TryDeleteCloudNoteRepository()
{
var credentials = Model.Credentials;
ICloudStorageClient cloudStorageClient = _cloudStorageClientFactory.GetOrCreate(credentials.CloudStorageId);
try
{
await cloudStorageClient.DeleteFileAsync(Config.RepositoryFileName, credentials);
return(true);
}
catch (Exception)
{
return(false);
}
}
/// <inheritdoc/>
public override async Task Run()
{
try
{
SerializeableCloudStorageCredentials credentials = StoryBoard.LoadFromSession <SerializeableCloudStorageCredentials>(SynchronizationStorySessionKey.CloudStorageCredentials);
_repositoryStorageService.LoadRepositoryOrDefault(out NoteRepositoryModel localRepository);
SettingsModel settings = _settingsService.LoadSettingsOrDefault();
string transferCode = settings.TransferCode;
bool needsNewTransferCode = !TransferCode.IsCodeSet(transferCode);
if (needsNewTransferCode)
{
transferCode = TransferCode.GenerateCode(_cryptoRandomService);
}
byte[] encryptedRepository = EncryptRepository(
localRepository, transferCode, _cryptoRandomService, settings.SelectedEncryptionAlgorithm);
ICloudStorageClient cloudStorageClient = _cloudStorageClientFactory.GetOrCreate(credentials.CloudStorageId);
await cloudStorageClient.UploadFileAsync(Config.RepositoryFileName, encryptedRepository, credentials);
// All went well, time to save the transfer code, if a new one was created
if (needsNewTransferCode)
{
settings.TransferCode = transferCode;
_settingsService.TrySaveSettingsToLocalDevice(settings);
string formattedTransferCode = TransferCode.FormatTransferCodeForDisplay(transferCode).Replace(' ', '-');
string messageNewCreated = _languageService.LoadTextFmt("transfer_code_created", formattedTransferCode);
string messageWriteDown = _languageService.LoadText("transfer_code_writedown");
if (StoryBoard.Mode.ShouldUseGui())
{
await _feedbackService.ShowMessageAsync(messageNewCreated + Environment.NewLine + messageWriteDown, null, MessageBoxButtons.Ok, false);
}
}
await StoryBoard.ContinueWith(SynchronizationStoryStepId.StopAndShowRepository);
_feedbackService.ShowToast(_languageService["sync_success"]);
}
catch (Exception ex)
{
// Keep the current page open and show the error message
ShowExceptionMessage(ex, _feedbackService, _languageService);
}
}
/// <inheritdoc/>
public override async Task Run()
{
try
{
NoteRepositoryModel cloudRepository = StoryBoard.LoadFromSession <NoteRepositoryModel>(SynchronizationStorySessionKey.CloudRepository.ToInt());
SerializeableCloudStorageCredentials credentials = StoryBoard.LoadFromSession <SerializeableCloudStorageCredentials>(SynchronizationStorySessionKey.CloudStorageCredentials.ToInt());
_repositoryStorageService.LoadRepositoryOrDefault(out NoteRepositoryModel localRepository);
SettingsModel settings = _settingsService.LoadSettingsOrDefault();
// Merge repositories
NoteRepositoryMerger merger = new NoteRepositoryMerger();
NoteRepositoryModel mergedRepository = merger.Merge(localRepository, cloudRepository);
// Store merged repository locally when different
if (!RepositoriesAreEqual(mergedRepository, localRepository))
{
_repositoryStorageService.TrySaveRepository(mergedRepository);
}
// Store merged repository to the cloud when different, otherwise spare the slow upload
if (!RepositoriesAreEqual(mergedRepository, cloudRepository))
{
byte[] encryptedRepository = EncryptRepository(
mergedRepository, settings.TransferCode, _cryptoRandomService, settings.SelectedEncryptionAlgorithm);
ICloudStorageClient cloudStorageClient = _cloudStorageClientFactory.GetOrCreate(credentials.CloudStorageId);
await cloudStorageClient.UploadFileAsync(Config.RepositoryFileName, encryptedRepository, credentials);
}
await StoryBoard.ContinueWith(SynchronizationStoryStepId.StopAndShowRepository.ToInt());
_feedbackService.ShowToast(_languageService["sync_success"]);
}
catch (Exception ex)
{
// Keep the current page open and show the error message
ShowExceptionMessage(ex, _feedbackService, _languageService);
}
}
public CloudStorageAccountViewModel(
INavigationService navigationService,
ILanguageService languageService,
ISvgIconService svgIconService,
IBaseUrlService webviewBaseUrl,
IStoryBoardService storyBoardService,
IFeedbackService feedbackService,
ICloudStorageClientFactory cloudStorageClientFactory,
SerializeableCloudStorageCredentials model)
: base(navigationService, languageService, svgIconService, webviewBaseUrl)
{
_storyBoardService = storyBoardService ?? throw new ArgumentNullException(nameof(storyBoardService));
_feedbackService = feedbackService ?? throw new ArgumentNullException(nameof(feedbackService));
Model = model;
_credentialsRequirements = cloudStorageClientFactory.GetOrCreate(Model.CloudStorageId).CredentialsRequirements;
CloudServiceName = cloudStorageClientFactory.GetCloudStorageMetadata(Model.CloudStorageId).Title;
GoBackCommand = new RelayCommand(GoBack);
CancelCommand = new RelayCommand(Cancel);
OkCommand = new RelayCommand(Ok);
}
/// <inheritdoc/>
public override async Task Run()
{
SerializeableCloudStorageCredentials credentials = StoryBoard.LoadFromSession <SerializeableCloudStorageCredentials>(SynchronizationStorySessionKey.CloudStorageCredentials.ToInt());
ICloudStorageClient cloudStorageClient = _cloudStorageClientFactory.GetOrCreate(credentials.CloudStorageId);
try
{
// The repository can be cached for this story, download the repository only once.
byte[] binaryCloudRepository;
if (!StoryBoard.TryLoadFromSession(SynchronizationStorySessionKey.BinaryCloudRepository.ToInt(), out binaryCloudRepository))
{
binaryCloudRepository = await cloudStorageClient.DownloadFileAsync(Config.RepositoryFileName, credentials);
StoryBoard.StoreToSession(SynchronizationStorySessionKey.BinaryCloudRepository.ToInt(), binaryCloudRepository);
}
await StoryBoard.ContinueWith(SynchronizationStoryStepId.ExistsTransferCode.ToInt());
}
catch (Exception ex)
{
// Keep the current page open and show the error message
ShowExceptionMessage(ex, _feedbackService, _languageService);
}
}
