sharp-chat/SharpChat/Packet/UserDisconnectPacket.cs

using System;

namespace SharpChat.Packet {
    public class UserDisconnectPacket : ServerPacket {
        private readonly long Timestamp;
        private readonly long UserId;
        private readonly string UserName;
        private readonly ChatUserDisconnectReason Reason;

        public UserDisconnectPacket(
            DateTimeOffset timestamp,
            long userId,
            string userName,
            ChatUserDisconnectReason reason
        ) {
            Timestamp = timestamp.ToUnixTimeSeconds();
            UserId = userId;
            UserName = userName;
            Reason = reason;
        }

        public override string Pack() {
            return string.Format(
                "3\t{0}\t{1}\t{2}\t{3}\t{4}",
                UserId,
                UserName,
                Reason switch {
                    ChatUserDisconnectReason.Leave => "leave",
                    ChatUserDisconnectReason.TimeOut => "timeout",
                    ChatUserDisconnectReason.Kicked => "kick",
                    ChatUserDisconnectReason.Flood => "flood",
                    _ => "leave",
                },
                Timestamp,
                SequenceId
            );
        }
    }
}