namespace IM_API.Tools
{
    public static class StreamKeyBuilder
    {
        public static string Private(long a, long b)
        {
            if (a <= 0 || b <= 0) throw new ArgumentException();
            return $"p:{(a < b ? $"{a}_{b}" : $"{b}_{a}")}";
        }

        public static string Group(long groupId)
        {
            if (groupId <= 0) throw new ArgumentException();
            return $"g:{groupId}";
        }
    }
}