// BookReturnDLG.cpp : implementation file
//

#include "stdafx.h"
#include "library.h"
#include "BookRS.h"
#include "BorrowRS.h"
#include "BookReturnDLG.h"


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

/////////////////////////////////////////////////////////////////////////////
// CBookReturnDLG dialog


CBookReturnDLG::CBookReturnDLG(CWnd* pParent /*=NULL*/)
	: CDialog(CBookReturnDLG::IDD, pParent)
{
	//{{AFX_DATA_INIT(CBookReturnDLG)
	m_strBookNum = _T("");
	//}}AFX_DATA_INIT
}


void CBookReturnDLG::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CBookReturnDLG)
	DDX_Text(pDX, IDC_BOOK_NUM, m_strBookNum);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CBookReturnDLG, CDialog)
	//{{AFX_MSG_MAP(CBookReturnDLG)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBookReturnDLG message handlers

void CBookReturnDLG::OnOK() 
{
	// TODO: Add extra validation here
UpdateData(true);

	if(!m_borrowSet.IsOpen())
	{
		m_borrowSet.Open();
	}
	m_borrowSet.m_strFilter.Format("bno='%s' and Return_date is null",m_strBookNum);
	m_borrowSet.Requery();
	if(m_borrowSet.IsEOF())
	{
		AfxMessageBox("此書不存在或已經還掉");
        CDialog::OnOK();
		return;
	}

	CTime today = CTime::GetCurrentTime();
	CTimeSpan diffDays = today - m_borrowSet.m_borrow_date;
	if(diffDays>30)
	{
		AfxMessageBox("該書已經過期了");
		CDialog::OnOK();
		return;
	}
	m_borrowSet.Edit();
	m_borrowSet.m_return_date = today;
	m_borrowSet.Update();

	if(!m_bookSet.IsOpen())
	{
		m_bookSet.Open();
	}
	m_bookSet.m_strFilter.Format("bno= '%s'",m_bookSet.m_bno);
	m_bookSet.Requery();
	m_bookSet.Edit();
	m_bookSet.m_stocked=m_bookSet.m_stocked+1;
	m_bookSet.Update();
	AfxMessageBox("還書成功");
		
	CDialog::OnOK();
}