public bool ShouldUpdate(BookSource books, VolumeSource volumes, out Date date)
{
var progress = Log.Action(3, "Checking local catalog...");
progress.Continue("Opening local catalog...");
if (books.Exists && volumes.Exists) {
progress.Continue("Getting local creation date...");
date = Date.Min(books.GetCreated(), volumes.GetCreated());
Log.Verbose("Local creation date: {0}.", date);
if (new Date(DateTime.Now) == date) {
Log.Warning("Local catalog up-to-date.");
progress.Finish();
return false;
}
} else {
date = Date.MinValue;
}
progress.Finish();
return true;
}
