#ifndef _TcpEntity_H_
#define _TcpEntity_H_

#include <Winsock2.h>
#include <string>
#include <vector>
#include <thread>
#include <functional>

#include "Communicator.h"

using namespace std;

enum class ETcpEvent
{
	NUL = 0,		//
	SRV_SUCCESS,	// 服务端启动成功(listen成功)
	ACCEPT,			// 服务端接收到客户端的连接
	CONN_OK,		// 作为客户端时，连接成功
	CONN_ERR,		// 作为客户端时，连接失败
	MSG_RECV,		// 接收消息
	MSG_SEND,		// 发送消息
	CLOSE,			// 断开连接
	ERR				// 异常错误
};

class TcpHandler;
class TcpParser;

class TcpEntity : public CommEntity, public std::enable_shared_from_this<TcpEntity>
{
public:
	struct Client
	{
		SOCKET sock;
		SOCKADDR_IN sock_addr;
		std::string host;
		std::shared_ptr<TcpParser> parser = nullptr;
	};

public:
	// 初始化服务端
	TcpEntity(TcpHandler* handler = nullptr);
	~TcpEntity();

	int start() override;
	void close() override;

	void runThreadTcp();

	void setHost(string host, int port, bool is_client);
	std::string host() { return host_; }
	int port() { return port_; }
	std::string hostport() { return host_ + ":" + std::to_string(port_); }

	void  setReconnect(int ms);

	bool isClient() { return isClient_; }

	void setHandler(TcpHandler* handler);

	bool sendData(std::string data, std::string clientId="");

	bool isAlive();
	bool isConnected();


	std::shared_ptr<TcpParser> parser = nullptr;

private:
	void runServerLoop();
	void runServerRecvLoop(Client client, std::string client_name);

	void runClientLoop();

private:
	// 本机的SOCKET对象
	SOCKET sock_ = INVALID_SOCKET;

	// socket addr信息
	SOCKADDR_IN sockaddr_;

	// TCP类型是否是客户端： true: 客户端, false: 服务端
	bool isClient_ = true;

	// 通讯地址，作为客户端时有效
	std::string host_;

	// 通讯端口
	int port_ = 0;

	// 重连间隔时间，单位秒
	int tReconnect_ = 0;

	// 作为服务端时连接的客户端SOCKET
	std::vector<Client> vecClient_;

	// 回调处理对象
	TcpHandler* handler_ = nullptr;

	bool isAlive_ = false;
	bool isCloseRequest_ = false;
	bool isConnected_ = false;

	// 状态更新时间戳
	int64_t ts_; 

	int64_t tsHeartbeat_=0;
};

class TcpHandler
{
public:
	virtual void onEvent(TcpEntity* entity, TcpEntity::Client* client, ETcpEvent evt, std::string msg) {};
};

#endif // !_TcpEntity_H_