// SerialPortServer.hpp
// 

#pragma once

#ifndef _SerialPortServer_DLL
#define SERIALPORTSERVER_API	_declspec(dllimport)
#else
#define SERIALPORTSERVER_API	_declspec(dllexport)
#endif

/* Controlcharacters */
#define DLE 0x10 /* Start of a message */
#define CON 0x11 /* Initialisation */
#define CONACK 0x12 /* Confirmation for CON */
#define STX 0x02 /* Start of DATA */
#define BUSY 0x16 /* receiver not ready */

#define ETX 0x03
#define ACK 0x06
#define NAK 0x15
#define ENQ 0x05

#define CR 0x0d
#define LF 0x0a

#include "Stream.hpp"
#include "Buffer.hpp"


// ----------------------------------------------------------------------------
// CSerialPortServer

class SERIALPORTSERVER_API CSerialPortServer
{
public:
	class FrameStream;

public:
	CSerialPortServer();
	virtual ~CSerialPortServer();

public:
	bool OpenPort (
			UINT portnr = 1, 
			UINT baud = 19200, 
			char parity = NOPARITY, 
			UINT databits = 8, 
			UINT stopsbits = 1);

	void ClosePort ();

public:
//  发送命令,在主线程中调用
	int  SendCommand (const char * cmd, int length);

//  发送刷新命令,在主线程中调用
	int  SendRefreshCommand (const char * cmd, int length);

//  把同步队列中的数据搬到异步队列中
	int  SyncToASync ();

//  检查返回状态值, bRemove指定是否删除, bWait指定是否等待
	bool PeekStatus (FrameStream * pStream, bool bRemove, bool bWait);

//  检索状态队列的个数
	int  GetNbOfStatus ();

protected:
//  处理读队列, 在写周期中调用
	int  ProcessStatus ();

protected:
	virtual int  WriteCycle ();
	virtual int  ReadCycle  ();

protected:
	virtual int  OnCallback (FrameStream data) = 0;

//  把一帧数据写到串口
	virtual int  WriteFrame (FrameStream data);
	virtual FrameStream ReadFrame () = 0;

	virtual int  GetNbOfACK (FrameStream data) = 0;

protected:
// 写数据到串口,然后等待ACK
	virtual int  WriteFrameWaitACK (FrameStream data);

protected:
	class SerialPortBuffer * m_Port;

public:
	bool StartServer ();
	void StopServer  ();

public:
	int  SetMaxlenCommandBuffer (int max);
	int  SetMaxlenRefreshBuffer (int max);

protected:
	static	int	 DaemonWrite (void * Arg);
	static	int	 DaemonRead  (void * Arg);

	virtual int	 RunWrite ();
	virtual int	 RunRead  ();

//  反向通知函数
protected:
//  超时通知
	virtual void OnTimeOut (FrameStream cmd) { }
	virtual int  ShouldResend (FrameStream cmd) { return 0; }

protected:
	HANDLE	ThreadHandleWrite;
	HANDLE	ThreadHandleRead;

	DWORD	ThreadIDWrite;		// 写线程ID
	DWORD	ThreadIDRead;		// 读线程ID

	DWORD	ThreadIDMain;		// 主线程ID

	HANDLE	EventHandleWrite;	// 当命令写入共享缓存时,发送事件
	HANDLE	EventHandleRead;	// 当状态加入共享缓存时,发送事件

protected:
	class CLogFile * LogFile;

public:
	class SERIALPORTSERVER_API FrameStream : public Stream
	{
	public:
		FrameStream ();
		FrameStream (const FrameStream &);
		FrameStream (const char * str);
		FrameStream (const char * lpsz, int length);
		FrameStream (int length);
		~FrameStream ();

	public:
		int  m_Index;

	public:
		enum 
		{
			enUnknown = 0,

			enState = 1,
			enACK = 2,
			enNAK = 3,
			enBUSY = 4,
			enRequest = 5,
			enENQ = 8,

			enRefresh = 10,
			enRefreshCon = 11,
			enRefreshSys = 12,

			enOther = 100,
		};

		int  m_Type;

	public:
		bool IsFull () const;
		void Restart ();

	public:
		FrameStream & operator << (BYTE x);
		FrameStream & operator << (char x) { return  ((*this) << (BYTE) x); };

	public:
		Stream & operator = (const FrameStream & stringSrc);
	};

protected:
	class StreamArray   * m_arCommand;
	class StreamArray   * m_arRefreshCommand;

	class ExStreamArray * m_exCommand;
	class ExStreamArray * m_exRefreshCommand;
	class ExStreamArray * m_exStatus;

protected:
	DWORD m_LastTickWriteCommand;		// 最后一次写命令的时间
	DWORD m_LastTickWriteRefresh;		// 最后一次写刷新命令的时间

	int   m_MaxlenCommand;				// CommandBuffer的最大尺寸,超过时,就把队列尾部的命令扔了
	int   m_MaxlenRefresh;				// RefreshBuffer的最大尺寸,超过时,就把队列尾部的命令扔了

protected:
	int	  m_Reserved[256];
};