public async Task DeleteTempFile(string filename = "")
{
if (string.IsNullOrEmpty(filename))
{
await ReplyAsync("No filename provided.");
}
else
{
if (AttachmentHelper.DeleteFile(filename))
{
await ReplyAsync($"Deleted file `{filename}`.");
}
else
{
await ReplyAsync($"File `{filename}` not found.");
}
}
}