sharp-chat/SharpChat.SockChat/PacketsS2C/UserDisconnectS2CPacket.cs

using System;

namespace SharpChat.SockChat.PacketsS2C {
    public class UserDisconnectS2CPacket : ISockChatS2CPacket {
        private readonly long MessageId;
        private readonly DateTimeOffset TimeStamp;
        private readonly long UserId;
        private readonly string UserName;
        private readonly UserDisconnectReason Reason;

        public UserDisconnectS2CPacket(
            long messageId,
            DateTimeOffset timeStamp,
            long userId,
            string userName,
            UserDisconnectReason reason
        ) {
            MessageId = messageId;
            TimeStamp = timeStamp;
            UserId = userId;
            UserName = userName;
            Reason = reason;
        }

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