public bool DeleteFile(MysteryFile file)
{
var record = GetRecord(file.guid);
if (record == null)
{
return(false);
}
//I have one, but is it the last copy?
var different_copy = (from x in GetRecords(record.hash)
where x.guid != record.guid
select x).FirstOrDefault();
_collection.DeleteOne(x => x.guid == record.guid);
if (different_copy == null)
{
//last copy
File.Delete(record.path);
}
else
{
//we don't we still have at least 1 reference out there.
}
//no matter if we still have a copy for somebody else we say we delete this one
return(true);
}
public Stream GetFileStream(MysteryFile file)
{
var record = GetRecord(file.guid);
if (record == null)
{
return(null);
}
var result = new FileStream(record.path, FileMode.Open, FileAccess.Read, FileShare.Read);
return(result);
}
public byte[] GetFileBytes(MysteryFile file)
{
var record = GetRecord(file.guid);
if (record == null)
{
return(null);
}
using (var file_stream = new FileStream(record.path, FileMode.Open, FileAccess.Read, FileShare.Read)) {
using (var mem = new MemoryStream()) {
file_stream.CopyTo(mem);
return(mem.ToArray());
}
}
}
public MysteryFile CloneInTmpFile(MysteryFile file, DateTime expiration)
{
var record = GetRecord(file.guid);
if (record == null)
{
return(null);
}
var clone = record.Clone();
clone.guid = Guid.NewGuid();
clone.expiration = expiration;
_collection.InsertOne(clone);
return(new MysteryFile()
{
filename = file.filename, guid = clone.guid
});
}
