using System;
using System.Net;

namespace SharpChat.SockChat {
    public abstract class ConnectionInfo {
        public DateTimeOffset LastPing { get; private set; }

        public long UserId { get; private set; } = 0;

        public string RemoteAddress { get; }
        public ushort RemotePort { get; }
        public string RemoteEndPoint { get; }

        public ConnectionInfo(IPAddress remoteAddr, ushort remotePort) {
            BumpPing();

            RemoteAddress = remoteAddr.ToString();
            RemotePort = remotePort;
            RemoteEndPoint = string.Format(
                RemoteAddress.Contains(':') ? "[{0}]:{1}" : "{0}:{1}",
                RemoteAddress, RemotePort
            );
        }

        // please call this through ConnectionsContext
        public void SetUserId(long userId) {
            if(UserId > 0)
                throw new InvalidOperationException("This connection is already associated with a user.");

            UserId = userId;
        }

        public void BumpPing() {
            LastPing = DateTimeOffset.UtcNow;
        }
    }
}