public string SetPrefix(IGuild guild, string prefix)
{
if (string.IsNullOrWhiteSpace(prefix))
{
throw new ArgumentNullException(nameof(prefix));
}
if (guild == null)
{
throw new ArgumentNullException(nameof(guild));
}
prefix = prefix.ToLowerInvariant();
using (var uow = _db.UnitOfWork)
{
var gc = uow.GuildConfigs.For(guild.Id, set => set);
gc.Prefix = prefix;
uow.Complete();
}
Prefixes.AddOrUpdate(guild.Id, prefix, (key, old) => prefix);
return(prefix);
}
