public static SignalMessage IncreaseReceiptCountLocked(SignalServiceEnvelope envelope)
{
SignalMessage m;
bool set_mark = false;
lock (DBLock)
{
using (var ctx = new SignalDBContext())
{
m = ctx.Messages.SingleOrDefault(t => t.ComposedTimestamp == envelope.GetTimestamp());
if (m != null)
{
m.Receipts++;
if (m.Status == SignalMessageStatus.Confirmed)
{
m.Status = SignalMessageStatus.Received;
set_mark = true;
}
}
else
{
ctx.EarlyReceipts.Add(new SignalEarlyReceipt()
{
DeviceId = (uint)envelope.GetSourceDevice(),
Timestamp = envelope.GetTimestamp(),
Username = envelope.GetSourceE164()
});
}
ctx.SaveChanges();
}
}
return(set_mark ? m : null);
}