public Task InstallDlBook(DlBook dlBook, string symmetricKey, CancellationToken cancelToken)
{
return(Task.Run(async() =>
{
InstallResultEnum installResult = InstallResultEnum.Failure;
PublicationContent publicationContent = null;
try
{
var contentKey = await dlBook.GetContentKey(symmetricKey).WithCancellation <byte[]>(cancelToken);
publicationContent = new PublicationContent(dlBook, contentKey);
bool hasNotInstalled = (!await publicationContent.DlBook.IsSqliteDecryped());
if (hasNotInstalled)
{
await publicationContent.DlBook.UnZipFile(cancelToken);
if (cancelToken.IsCancellationRequested)
{
cancelToken.ThrowIfCancellationRequested();
}
await publicationContent.DecryptDataBase();
await publicationContent.DlBook.DeleteOriginalSqlite();
installResult = InstallResultEnum.Success;
}
else
{//has been installed
installResult = InstallResultEnum.Success;
}
}
catch (OperationCanceledException ex)
{
if (cancelToken.IsCancellationRequested)
{
installResult = InstallResultEnum.Cancel;
}
throw ex;
}
catch (Exception ex)
{
Logger.Log("Install error:" + ex.ToString());
installResult = InstallResultEnum.Failure;
throw ex;
}
finally
{
if (publicationContent != null && installResult != InstallResultEnum.Success)
{
publicationContent.DlBook.DeleteDlBookInstallFile().Wait();
}
}
}));
}
async void InstallCurrentBook()
{
var cancelTokenSource = new CancellationTokenSource();
InstallResultEnum installResult = await PublicationUtil.Instance.Install(BookInfo.BookId, cancelTokenSource.Token);
switch (installResult)
{
case InstallResultEnum.Cancel:
ShowInstallErrorAlert();
break;
case InstallResultEnum.Failure:
ShowInstallErrorAlert();
break;
case InstallResultEnum.Success:
break;
}
}