// UdpModeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "UdpMode.h"
#include "UdpModeDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif


HANDLE g_ahExitEvent;

CUdpModeDlg *pointer;
int port_id;
int port_opened = 0;			// 0: close 1:open

DWORD WINAPI RecvThread(LPVOID param);

DWORD WINAPI MonitorEventThread( LPVOID param );


DWORD WINAPI MonitorEventThread(LPVOID param)
{
	CString szLogMsg = _T("");
	if( WaitForSingleObject(g_ahExitEvent, INFINITE) != WAIT_TIMEOUT)
	{
		AfxTrace("MonitorEventThread called \n");
		slan_close(port_id);

		CIPAddressCtrl *pIpAddrCtrl = NULL;
		pIpAddrCtrl = (CIPAddressCtrl *)(pointer->GetDlgItem(IDC_SERVER_IPADDRESS));
		pIpAddrCtrl->EnableWindow( TRUE );

//		pointer->m_ServerIPCtrl.EnableWindow(TRUE);
		pointer->m_ServerPortCtrl.EnableWindow(TRUE);
//		pointer->m_RemoteIPCtrl.EnableWindow(TRUE);

		CIPAddressCtrl *pRemoteIpAddrCtrl = NULL;
		pRemoteIpAddrCtrl = (CIPAddressCtrl *)(pointer->GetDlgItem(IDC_REMOTE_IPADDRESS));
		pRemoteIpAddrCtrl->EnableWindow( TRUE );

		pointer->m_RemotePortCtrl.EnableWindow(TRUE);
		pointer->m_OpenCtrl.EnableWindow(TRUE);
		pointer->m_CloseCtrl.EnableWindow(FALSE);

		AfxMessageBox("Stopped!!");
	}

	return (DWORD) -1;
}

DWORD WINAPI RecvThread(LPVOID param)
{

	int nReturn;
	char szStr[3072];
	CString strTemp;
	CString strResult;
	int len = 2048;

	slan_SetReadTimeouts ( port_id, 0);

	while(TRUE)
	{

		if( port_opened == 1)
		{
			len = 2048;
			nReturn = slan_read(port_id, szStr, &len);

			if(nReturn >= 0)
			{
				if(!len)
					Sleep(10);
				if( len > 0)
				{
			//		strcat(strClientInfo,pszThreadInput->sClientThreadInfo.szClientIp);
					szStr[len] = '\0';
					pointer->m_Receiver.GetWindowText(strTemp);
					strResult.Format("%s%s", strTemp, szStr);
					pointer->m_Receiver.SetWindowText(strResult);
				}
			}
			else
			{
				SetEvent(g_ahExitEvent);
				Sleep(1000);
				break;
			}

			Sleep(10);
		}
		else
			break;
	}

	return (DWORD) -1;
}


/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUdpModeDlg dialog

CUdpModeDlg::CUdpModeDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CUdpModeDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CUdpModeDlg)
	m_RemotePort = 0;
	m_ServerPort = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CUdpModeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CUdpModeDlg)
	DDX_Control(pDX, IDC_CLOSE, m_CloseCtrl);
	DDX_Control(pDX, IDC_OPEN, m_OpenCtrl);
	DDX_Control(pDX, IDC_REMOTE_PORT, m_RemotePortCtrl);
	DDX_Control(pDX, IDC_SERVER_PORT, m_ServerPortCtrl);
	DDX_Control(pDX, IDC_RECEIVER, m_Receiver);
	DDX_Control(pDX, IDC_TRANSMITTER, m_Transmitter);
	DDX_Text(pDX, IDC_REMOTE_PORT, m_RemotePort);
	DDX_Text(pDX, IDC_SERVER_PORT, m_ServerPort);
	DDV_MinMaxInt(pDX, m_ServerPort, 0, 65536);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CUdpModeDlg, CDialog)
	//{{AFX_MSG_MAP(CUdpModeDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDOK, OnOpen)
	ON_EN_CHANGE(IDC_TRANSMITTER, OnChangeTransmitter)
	ON_BN_CLICKED(IDC_BTN_EXIT, OnBtnExit)
	ON_BN_CLICKED(IDC_OPEN, OnOpen)
	ON_BN_CLICKED(IDC_CLOSE, OnClose)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CUdpModeDlg message handlers

BOOL CUdpModeDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	UpdateData(FALSE);
	pointer = this;

	m_OpenCtrl.EnableWindow(TRUE);
	m_CloseCtrl.EnableWindow(FALSE);

		CIPAddressCtrl *pIpAddrCtrl = NULL;
		pIpAddrCtrl = (CIPAddressCtrl *)(GetDlgItem(IDC_SERVER_IPADDRESS));
		pIpAddrCtrl->EnableWindow( TRUE );

		CIPAddressCtrl *pRemoteIpAddrCtrl = NULL;
		pRemoteIpAddrCtrl = (CIPAddressCtrl *)(GetDlgItem(IDC_REMOTE_IPADDRESS));
		pRemoteIpAddrCtrl->EnableWindow( TRUE );

//	m_ServerIPCtrl.EnableWindow(TRUE);
	m_ServerPortCtrl.EnableWindow(TRUE);
//	m_RemoteIPCtrl.EnableWindow(TRUE);
	m_RemotePortCtrl.EnableWindow(TRUE);
	m_Transmitter.EnableWindow(FALSE);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CUdpModeDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CUdpModeDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CUdpModeDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CUdpModeDlg::OnOpen() 
{
	// TODO: Add your control notification handler code here
	GetInputData();

	DWORD dwThreadId;
	HANDLE hRecvThread;
	HANDLE hMonitorThread;
	OPMODE eMode;
	INPUTS sParam;

	CString szServerIp = _T("");
	CIPAddressCtrl *pServerIpAddrCtrl = NULL;
	pServerIpAddrCtrl = (CIPAddressCtrl *)GetDlgItem(IDC_SERVER_IPADDRESS);
	pServerIpAddrCtrl->GetWindowText( szServerIp );

	CString szRemoteIp = _T("");
	CIPAddressCtrl *pRemoteIpAddrCtrl = NULL;
	pRemoteIpAddrCtrl = (CIPAddressCtrl *)GetDlgItem(IDC_REMOTE_IPADDRESS);
	pRemoteIpAddrCtrl->GetWindowText( szRemoteIp );


	//Validate the inputs...
	if( szServerIp.IsEmpty() || szRemoteIp.IsEmpty() ||
		(0==pointer->m_ServerPort) || (0==pointer->m_RemotePort) )
	{
		AfxMessageBox( "Enter the proper Inputs !!" );
		return;
	}


//	port_id = slan_openudp( szTmpServerIP, pointer->m_ServerPort, \
//					szTmpRemoteIP, pointer->m_RemotePort);

	eMode = UDP;
	sprintf(sParam.udp.localip, szServerIp);
	sParam.udp.localport = m_ServerPort;
	sprintf(sParam.udp.remoteip, szRemoteIp);
	sParam.udp.remoteport = m_RemotePort;


	port_id = slan_open (eMode, sParam);
	//PINT pIndex = (PINT)malloc(sizeof(int)*1);

	//*pIndex = port_id;
	int iTemp;

	if( port_id >= 0)
	{

		port_opened = 1;			// port is opened

		g_ahExitEvent = CreateEvent(NULL, TRUE, FALSE, NULL );

		hRecvThread = CreateThread(NULL, 0, RecvThread, (LPVOID)&iTemp, 0, &dwThreadId);
		if( NULL == hRecvThread )
		{
			DWORD dwError = GetLastError();
			AfxMessageBox("CreateThread RecvThread- Error");
			
			return;
		}

		hMonitorThread = CreateThread(NULL, 0, MonitorEventThread, (LPVOID)&iTemp, 0, &dwThreadId);
		if( NULL == hMonitorThread )
		{
			DWORD dwError = GetLastError();
			AfxMessageBox("CreateThread MonitorEventThread - Error");
			
			return;
		}

		m_OpenCtrl.EnableWindow(FALSE);
		m_CloseCtrl.EnableWindow(TRUE);

		CIPAddressCtrl *pIpAddrCtrl = NULL;
		pIpAddrCtrl = (CIPAddressCtrl *)(GetDlgItem(IDC_SERVER_IPADDRESS));
		pIpAddrCtrl->EnableWindow( FALSE );

	
//		m_ServerIPCtrl.EnableWindow(FALSE);
		m_ServerPortCtrl.EnableWindow(FALSE);

		CIPAddressCtrl *pRemoteIpAddrCtrl = NULL;
		pRemoteIpAddrCtrl = (CIPAddressCtrl *)(GetDlgItem(IDC_REMOTE_IPADDRESS));
		pRemoteIpAddrCtrl->EnableWindow( FALSE );

//		m_RemoteIPCtrl.EnableWindow(FALSE);
		m_RemotePortCtrl.EnableWindow(FALSE);
		m_Transmitter.EnableWindow(TRUE);
		m_Transmitter.SetFocus();
	
	}
	else
		AfxMessageBox("Port Open Fail");

	
}

void CUdpModeDlg::OnClose() 
{
	// TODO: Add your control notification handler code here

	if( port_opened == 1)
	{
		port_opened = 0;			// port is closed

		SetEvent(g_ahExitEvent);
		Sleep(1000);
	}
	
}

void CUdpModeDlg::OnBtnExit() 
{
	// TODO: Add your control notification handler code here

	if( port_opened == 1)
		OnClose();

	CDialog::OnCancel();
	
}

void CUdpModeDlg::OnChangeTransmitter() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	if( port_opened == 1)
	{
		char cSendChar;
		findCharToSend(&cSendChar);
		int ret = slan_write(port_id, &cSendChar, 1 );
	}
	else
		AfxMessageBox("Port not open!");
}

void CUdpModeDlg::OnCancel() 
{
	// TODO: Add extra cleanup here
	
}

void CUdpModeDlg::GetInputData()
{
	UpdateData(TRUE);
}


void CUdpModeDlg::findCharToSend(char* pcSendChar)
{
   WORD  wLineIndex  = 0;
   WORD  dwGetSel    = 0;
   WORD  wStart      = 0;
   DWORD wColNumber  = 0;
   DWORD wLineNumber = 0;
   DWORD cbText      = 0;
   char szBuf[2048]  = {0};

   CEdit* pEdit = (CEdit*)GetDlgItem(IDC_TRANSMITTER); 
	
   wLineNumber = pEdit->SendMessage(EM_LINEFROMCHAR, -1, 0L);
 
   dwGetSel = (WORD)pEdit->SendMessage(EM_GETSEL,0, 0L);

   wStart = LOWORD(dwGetSel);

   wLineIndex  = (WORD)pEdit->SendMessage(EM_LINEINDEX, -1, 0L);

   wColNumber = wStart - wLineIndex;
   
   *(WORD *)szBuf = sizeof(szBuf); 

   cbText = pEdit->SendMessage(EM_GETLINE,	wLineNumber,(DWORD)(LPSTR) szBuf);

   szBuf[cbText] = '\0';          
   
   *pcSendChar  = szBuf[wColNumber-1];
}


BOOL CUdpModeDlg::PreTranslateMessage(MSG* pMsg) 
{
	if ((pMsg->message == WM_KEYDOWN) && (pMsg->hwnd == GetDlgItem( IDC_TRANSMITTER )->m_hWnd))
    {
        int nVirtKey = (int) pMsg->wParam;
        if (nVirtKey == VK_DELETE || nVirtKey == VK_BACK)
            return TRUE;
    }

	return CDialog::PreTranslateMessage(pMsg);
}