#ifndef _NNTP_NNTPCLIENT_HPP_
#define _NNTP_NNTPCLIENT_HPP_
#ifndef _COMMON_BLOCK_HPP_
#include <common/block.hpp>
#endif
#ifndef _COMMON_STRING_HPP_
#include <common/string.hpp>
#endif
#ifndef _SOCKET_INETSOCKETADDRESS_HPP_
#include <socket/intsaddr.hpp>
#endif
#ifndef _SOCKET_SOCKET_HPP_
#include <socket/socket.hpp>
#endif
#ifndef _NNTP_MESSAGEID_HPP_
#include <nntp/msgid.hpp>
#endif
#ifndef _NNTP_GROUPITERATOR_HPP_
#include <nntp/iterator.hpp>
#endif

class ListItems;
class GroupItem;
class SystemTime;

class NNTPClient : private INETSocketAddress
{
public:
  NNTPClient(void);
	virtual ~NNTPClient();
  bool open(const String &hostName);
	bool open(const String &hostName,const String &user,const String &password);
	bool isConnected(void)const;
	bool listGroup(const String &newsGroup,Block<String> &messageIDStrings);
	bool list(void);
	bool list(ListItems &listItems);
	bool quit(void);
	bool slave(void);
  bool group(GroupItem &groupItem);
	bool xover(DWORD first,DWORD last,Block<String> &overview);
  bool article(DWORD articleNumber,Block<String> &articleText,String &messageID);
  bool article(const MsgID &msgID,Block<String> &articleText,String &messageID);
  bool body(DWORD articleNumber,Block<String> &bodyText,String &messageID);
  bool body(const MsgID &msgID,Block<String> &bodyText,String &messageID);
  bool head(DWORD articleNumber,Block<String> &headText,String &messageID);
  bool head(const MsgID &msgID,Block<String> &headText,String &messageID);
  bool stat(DWORD articleNumber,MsgID &msgID);
  bool stat(const MsgID &msgID,MsgID &msgFound);
  bool simulateNewNews(const String &newsGroup,Block<String> &messageIDStrings,short pastDays);
  bool newNews(Block<String> &newsGroups,Block<String> &distributionGroups,Block<String> &messageIDStrings,const SystemTime &systemTime,WORD isGMT);
  bool newNews(const String &newsGroup,Block<String> &messageIDStrings,short pastDays=0);
  bool newGroups(ListItems &listItems,Block<String> &distributionGroups,const SystemTime &systemTime,bool isGMT);
	bool newGroups(ListItems &listItems,short pastDays=0);
	bool next(GroupIterator &groupIterator);
	bool last(GroupIterator &groupIterator);
  bool iHave(const MsgID &msgID);
	bool help(Block<String> &cmdLines);
	bool post(Block<String> &articleLines);
	void cancel(void);
protected:
  virtual void message(String messageString);
  virtual void message(Block<String> &messageStrings);
private:
	enum NNTPCmd{Article,Body,Group,Head,Help,IHave,Last,List,NewGroups,NewNews,Next,Post,Quit,Slave,Stat,ListGroup,AuthInfoUser,AuthInfoPass,XOver};
	NNTPClient(const NNTPClient &someNNTPClient);
	NNTPClient &operator=(const NNTPClient &someNNTPClient);
  void createCmds(void);
  void createResponseStrings(void);
  void receiveStrings(WORD displayStrings=FALSE);
  void receiveStrings(Block<String> &receiveStrings);
  void daysPast(SystemTime &systemTime,short pastDays);
  void makeTimeDateString(String &timeDateString,const SystemTime &systemTime);
  bool retrieveBlock(const String &controlData,Block<String> &stringBlock,Block<String> &ackResponse,Block<String> &nackResponse);
  bool retrieveBlock(const String &controlData,Block<String> &stringBlock,String &extraInfo,Block<String> &ackResponse,Block<String> &nackResponse);
  bool isInResponse(const String &responseString,Block<String> &responseStrings);
  bool putControlData(const String &stringData,bool waitForResponse=true);
  bool authenticate(const String &user,const String &pass);
  bool getControlData(void);

  Block<String> mNNTPCmds;
	Block<String> mAckArticleResponseStrings;
	Block<String> mNackArticleResponseStrings;
	Block<String> mAckSlaveResponseStrings;
	Block<String> mAckGroupResponseStrings;
	Block<String> mNackGroupResponseStrings;
	Block<String> mAckListResponseStrings;
	Block<String> mAckQuitResponseStrings;
	Block<String> mAckNewNewsResponseStrings;
	Block<String> mAckNewGroupsResponseStrings;
	Block<String> mAckNextResponseStrings;
	Block<String> mAckIHaveResponseStrings;
	Block<String> mAckHelpResponseStrings;
	Block<String> mAckPostResponseStrings;
	Block<String> mAckAuthResponseStrings;
	Block<String> mAckXOverResponseStrings;
	Block<String> mNakConnectStrings;
	String mPeriod;
	String mSpace;
	String mComma;
	String mLeftAngle;
	String mRightAngle;
	Socket mNNTPControl;
  WSASystem mWSASystem;
};

inline
NNTPClient::NNTPClient(void)
: mPeriod("."), mSpace(" "), mComma(","), mLeftAngle("<"), mRightAngle(">")
{
  createCmds();
	createResponseStrings();
}

inline
NNTPClient::NNTPClient(const NNTPClient &/*someNNTPClient*/)
: mPeriod("."), mSpace(" "), mComma(","), mLeftAngle("<"), mRightAngle(">")
{ // no implementation
}

inline
NNTPClient::~NNTPClient()
{
  quit();
	mNNTPControl.destroy();
}

inline
NNTPClient &NNTPClient::operator=(const NNTPClient &/*someNNTPClient*/)
{ // no implementation
  return *this;
}

inline
bool NNTPClient::isConnected(void)const
{
  return mNNTPControl.isConnected();
}

inline
void NNTPClient::cancel(void)
{
  if(isConnected())quit();
  mNNTPControl.destroy();
}
#endif