// MainDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CLDSig32.h"
#include "MainDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CMainDlg dialog

CMainDlg::CMainDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMainDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMainDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMainDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMainDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMainDlg, CDialog)
	//{{AFX_MSG_MAP(CMainDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_EN_CHANGE(IDC_EDIT_DATASET, OnChangeEditDataSet)
	ON_BN_CLICKED(IDC_BUTTON_BROWSE, OnButtonBrowse)
	ON_BN_CLICKED(IDC_BUTTON_SIGN, OnButtonSign)
	ON_BN_CLICKED(IDC_BUTTON_VERIFY, OnButtonVerify)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CMainDlg::EnableControls(BOOL bEnable)
{
   GetDlgItem(IDC_EDIT_DATASET)->EnableWindow(bEnable);
   GetDlgItem(IDC_BUTTON_BROWSE)->EnableWindow(bEnable);
   GetDlgItem(IDC_BUTTON_SIGN)->EnableWindow(bEnable);
   GetDlgItem(IDC_BUTTON_VERIFY)->EnableWindow(bEnable);
}

/////////////////////////////////////////////////////////////////////////////
// CMainDlg message handlers

BOOL CMainDlg::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

   OnChangeEditDataSet();
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMainDlg::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 CMainDlg::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 CMainDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMainDlg::OnButtonSign()
{
   if (m_CreateSignatureDlg.DoModal() != IDOK)
   {
      return;
   }

   EnableControls(FALSE);
   
   CString sDataSet;
   GetDlgItemText(IDC_EDIT_DATASET, sDataSet);
   sDataSet.TrimLeft();
   sDataSet.TrimRight();

   LDicomDS DataSet;
   L_CHAR szMsg[128];
   L_UINT16 uRet;

   // Load the Data Set to be signed
   uRet = DataSet.LoadDS((L_CHAR*)(LPCSTR) sDataSet, DS_LOAD_CLOSE);
   if (uRet != DICOM_SUCCESS)
   {
      wsprintf(szMsg, "Failed to load the Data Set [Error: %hu].", uRet);
      MessageBox(szMsg, "Demo", MB_OK | MB_ICONERROR);
      EnableControls();
      return;
   }

   CWaitCursor WaitCursor;

   // Create a Digital Signature in the main Data Set
   uRet = DataSet.CreateSignature(NULL,
                                  m_CreateSignatureDlg.m_sPrivateKey,
                                  m_CreateSignatureDlg.m_sDigitalCertificate,
                                  m_CreateSignatureDlg.m_sPassword);
   if (uRet != DICOM_SUCCESS)
   {
      wsprintf(szMsg, "Failed to create the Digital Signature [Error: %hu].", uRet);
      MessageBox(szMsg, "Demo", MB_OK | MB_ICONERROR);
      EnableControls();
      return;
   }

   // Save the signed Data Set
   uRet = DataSet.SaveDS((L_CHAR*)(LPCSTR) m_CreateSignatureDlg.m_sSignedDataSet, 0);
   if (uRet != DICOM_SUCCESS)
   {
      wsprintf(szMsg, "Failed to save the signed Data Set [Error: %hu].", uRet);
      MessageBox(szMsg, "Demo", MB_OK | MB_ICONERROR);
      EnableControls();
      return;
   }

   MessageBox("The Data Set was signed successfully.", "Demo");
   EnableControls();
}

void CMainDlg::OnButtonVerify()
{
   EnableControls(FALSE);
   
   CString sDataSet;
   GetDlgItemText(IDC_EDIT_DATASET, sDataSet);
   sDataSet.TrimLeft();
   sDataSet.TrimRight();

   LDicomDS DataSet;
   L_CHAR szMsg[128];
   L_UINT16 uRet;

   // Load the Data Set
   uRet = DataSet.LoadDS((L_CHAR*)(LPCSTR) sDataSet, DS_LOAD_CLOSE);
   if (uRet != DICOM_SUCCESS)
   {
      wsprintf(szMsg, "Failed to load the Data Set [Error: %hu].", uRet);
      MessageBox(szMsg, "Demo", MB_OK | MB_ICONERROR);
      EnableControls();
      return;
   }

   CWaitCursor WaitCursor;

   // Verify all the Digital Signatures in the whole Data Set
   uRet = DataSet.VerifySignature(NULL);
   switch (uRet)
   {
   case DICOM_SUCCESS:
      MessageBox("All Digital Signatures were verified (if there are any).", "Demo");
      break;

   case DICOM_ERROR_INVALID_SIGNATURE:
      MessageBox("At least one Digital Signature is invalid.", "Demo", MB_OK | MB_ICONWARNING);
      break;

   default:
      wsprintf(szMsg, "Failed to verify the Digital Signatures [Error: %hu].", uRet);
      MessageBox(szMsg, "Demo", MB_OK | MB_ICONERROR);
   }

   EnableControls();
}

void CMainDlg::OnButtonBrowse()
{
   CFileDialog FileDlg(TRUE, NULL, NULL, OFN_FILEMUSTEXIST | OFN_HIDEREADONLY,
                       "DICOM Files (*.dic; *.dcm)|*.dic; *.dcm|All Files (*.*)|*.*||", this);
   if (FileDlg.DoModal() != IDOK)
   {
      return;
   }

   SetDlgItemText(IDC_EDIT_DATASET, FileDlg.GetPathName());
}

void CMainDlg::OnChangeEditDataSet()
{
   CString sDataSet;
   GetDlgItemText(IDC_EDIT_DATASET, sDataSet);

   sDataSet.TrimLeft();
   sDataSet.TrimRight();

   BOOL bEnable = sDataSet.GetLength();

   GetDlgItem(IDC_BUTTON_SIGN)->EnableWindow(bEnable);
   GetDlgItem(IDC_BUTTON_VERIFY)->EnableWindow(bEnable);
}