using System.Text; namespace SharpChat.Packet { public class UserChannelLeavePacket(long msgId, ChatUser user) : IServerPacket { public ChatUser User { get; private set; } = user ?? throw new ArgumentNullException(nameof(user)); public IEnumerable<string> Pack() { StringBuilder sb = new(); sb.Append('5'); sb.Append('\t'); sb.Append('1'); sb.Append('\t'); sb.Append(User.UserId); sb.Append('\t'); sb.Append(msgId); yield return sb.ToString(); } } }