// LoginDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MenuManage.h"
#include "LoginDlg.h"

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

extern CMenuManageApp theApp;
/////////////////////////////////////////////////////////////////////////////
// CLoginDlg dialog


CLoginDlg::CLoginDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CLoginDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CLoginDlg)
	m_strLoginName = _T("");
	m_strLoginPwd = _T("");
	//}}AFX_DATA_INIT
}


void CLoginDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLoginDlg)
	DDX_Text(pDX, IDC_EDIT_LOGINNAME, m_strLoginName);
	DDX_Text(pDX, IDC_EDIT_LOGINPWD, m_strLoginPwd);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CLoginDlg, CDialog)
	//{{AFX_MSG_MAP(CLoginDlg)
	ON_BN_CLICKED(ID_LOGIN_BTN, OnLoginBtn)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLoginDlg message handlers

void CLoginDlg::OnLoginBtn() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	if(!m_strLoginName.IsEmpty() && !m_strLoginPwd.IsEmpty())
	{
		try
		{
			CString sql;
			sql = "SELECT * FROM UserInfo WHERE UserName='"+m_strLoginName+"' and UserPwd = '"+m_strLoginPwd+"'";
			m_pRecordset.CreateInstance("ADODB.Recordset");
			m_pRecordset->Open((_variant_t)sql,_variant_t((IDispatch*)theApp.m_pConnection,true),adOpenStatic,adLockOptimistic,adCmdText);
			
			//如果沒有此用戶和密碼，再查詢是否有此用戶		
			if(m_pRecordset->adoEOF)
			{
				m_pRecordset->Close();
				sql = "SELECT * FROM UserInfo WHERE UserName='"+m_strLoginName+"'";
				try
				{
					m_pRecordset.CreateInstance("ADODB.Recordset");
					m_pRecordset->Open((_variant_t)sql,_variant_t((IDispatch*)theApp.m_pConnection,true),adOpenStatic,adLockOptimistic,adCmdText);
					//如果沒有此用戶，則提示用戶不存在
					if(m_pRecordset->adoEOF)
					{
						MessageBox("此用戶不存在!","登錄系統");
					}
					//如果有，提示密碼錯誤信息。
					else
					{
						MessageBox("密碼錯誤!","登錄系統");
						return;
					}
				}
				catch(_com_error e)///捕捉異常
				{
					CString temp;
					temp.Format("連接數據庫錯誤信息:%s",e.ErrorMessage());
					AfxMessageBox(temp);
					return;
				}		
			}
			else 
			{
				theApp.m_Level = m_pRecordset->GetCollect("UserLevel").lVal;
				theApp.m_name =  m_strLoginName;
				MessageBox("登錄成功！","登錄系統",MB_OKCANCEL|MB_ICONQUESTION);
			
				CDialog::OnOK();
				return;
			}
		}
		catch(_com_error e)///捕捉異常
		{
			CString temp;
			temp.Format("連接數據庫錯誤信息:%s",e.ErrorMessage());
			AfxMessageBox(temp);
			return;
		}
		m_pRecordset->Close(); 
		m_pRecordset = NULL; 	
	}
	else
	{
		MessageBox("請輸入用戶名和密碼","登錄系統");
	}

}