static void TimerChange(int index, TimeSpan delta, ITriggerMsg e, Timers timers)
{
// Return if invalid or 0 delta.
if (delta == TimeSpan.Zero)
{
return;
}
if (timers.Change(index, delta, out TimerDescription desc))
{
if (string.IsNullOrEmpty(desc.Message))
{
e.Reply("Changed timer {0} to {1} ({2}).",
index, desc.Duration.Str(), desc.Remaining.Str());
}
else
{
e.Reply("Changed \"{0}\" to {1} ({2}).",
desc.Message, desc.Duration.Str(), desc.Remaining.Str());
}
}
else
{
e.Reply("No such timer.");
}
}