public FilterResult Filter(
IFileResource sourceResource,
IEnumerable <IFileResource> targetResources,
ITargetHistoryRepository targetHistoryRepository,
IFileSystem source,
IFileSystem target)
{
return(HaveMatchingTargetResource() ||
HaveMatchingHistoryItem()
? FilterResult.Ambivalent
: FilterResult.Include);
bool HaveMatchingTargetResource()
{
var existing = targetResources.FirstOrDefault(
r => r.RelativePath == sourceResource.RelativePath
);
return(existing?.Size == sourceResource.Size);
}
bool HaveMatchingHistoryItem()
{
var historyItem = targetHistoryRepository.Find(
sourceResource.RelativePath
);
return(historyItem?.Size == sourceResource.Size);
}
}
private static bool ResourceExistsInHistory(
ITargetHistoryRepository targetHistoryRepository,
IFileResource sourceResource)
{
return(targetHistoryRepository.Find(
sourceResource.RelativePath
)
?.Size ==
sourceResource.Size);
}
private bool HistoryFileExists(
ITargetHistoryRepository targetHistoryRepository,
IFileResource sourceResource)
{
var existing = targetHistoryRepository.Find(
sourceResource.RelativePath
);
return(existing?.Size == sourceResource.Size);
}
