using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using CommonLang.Protocol;
using CommonLang.Net;

namespace CommonServer.Server
{
    /// <summary>
    /// 描述一个链接
    /// </summary>
    public interface ISession : AbstractSession
    {
        /// <summary>
        /// Session ID
        /// </summary>
        string ID { get; }

        bool IsConnected { get; }

        /// <summary>
        /// 总共发送字节数
        /// </summary>
        long TotalSentBytes { get; }

        /// <summary>
        /// 总共接收字节数
        /// </summary>
        long TotalRecvBytes { get; }


        ISessionListener Listener { get; }

        /// <summary>
        /// 关闭此链接
        /// </summary>
        /// <param name="force"></param>
        /// <returns></returns>
        bool Disconnect(bool force);

        /// <summary>
        /// 发送消息【通知】
        /// </summary>
        /// <param name="message"></param>
        /// <returns></returns>
        bool Send(IMessage message);

        /// <summary>
        /// 发送消息【回馈】
        /// </summary>
        /// <param name="request"></param>
        /// <param name="response"></param>
        /// <returns></returns>
        bool SendResponse(IMessage request, IMessage response);

        /// <summary>
        /// 获取远端地址
        /// </summary>
        /// <returns></returns>
        string GetRemoteAddress();

    }

    /// <summary>
    /// 服务端监听器
    /// </summary>
    public interface ISessionListener
    {
        /// <summary>
        /// Session建立回调
        /// </summary>
        /// <param name="session"></param>
        void OnConnected(ISession session);

        /// <summary>
        /// Session关闭回调
        /// </summary>
        /// <param name="session"></param>
        /// <param name="force"></param>
        /// <param name="reason"></param>
        void OnDisconnected(ISession session, bool force, String reason);

        /// <summary>
        /// 错误【编解码或者网络底层】
        /// </summary>
        /// <param name="session"></param>
        /// <param name="err"></param>
        void OnError(ISession session, Exception err);

        /// <summary>
        /// 消息发送成功
        /// </summary>
        /// <param name="session"></param>
        /// <param name="message"></param>
        void OnSentMessage(ISession session, object message);

        /// <summary>
        /// 消息接收到
        /// </summary>
        /// <param name="session"></param>
        /// <param name="message"></param>
        void OnReceivedMessage(ISession session, object message);
        
    }
}