package com.casin.erp.event;

import com.waveline.webbuilder.event.DefaultContentFormEventImpl;
import com.waveline.webbuilder.struts.ContentFormForm;
import javax.servlet.http.HttpServletRequest;
import com.waveline.webbuilder.exception.ProgramException;
import com.waveline.webbuilder.exception.DataBaseException;
import com.casin.erp.OutStock;
import com.waveline.webbuilder.util.FunctionUtil;
import com.casin.erp.Stock;
import com.casin.erp.InStockDetail;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2006</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */
public class OutStockFormEvent
    extends DefaultContentFormEventImpl
{
    public boolean beforInsertForm(HttpServletRequest request,
                                   ContentFormForm contentFormForm,
                                   Object session)
        throws DataBaseException, ProgramException
    {
        if(contentFormForm.getContentObject() instanceof OutStock)
        {
            OutStock outStock = (OutStock)contentFormForm.getContentObject();
            Stock stock = (Stock)FunctionUtil.loadContentObject(Stock.class.getName(),outStock.getStock().getId());
            InStockDetail detail = (InStockDetail)FunctionUtil.loadContentObject(InStockDetail.class.getName(),outStock.getDetail().getId());
            if(outStock.getAmount().intValue() < 1)
            {
                contentFormForm.setRetMsg("出庫數量必須是大于0的正整數。");
                return false;
            }
            if(outStock.getAmount().intValue() > stock.getAmount().intValue())
            {
                contentFormForm.setRetMsg("庫存產品數量不足。");
                return false;
            }
            try
            {
                stock.setAmount(new Integer(stock.
                    getAmount().intValue() - outStock.getAmount().intValue()));
                FunctionUtil.update(stock, false, session);
            }
            catch(Exception ex)
            {
                contentFormForm.setRetMsg("核減庫存產品數量出現異常");
                return false;
            }

            //將產品序列號設置為“已被占用”
            if(detail.getStatus() != null && detail.getStatus().intValue() == 1)
            {
                contentFormForm.setRetMsg("產品" + detail.getName() + "已經出庫");
                return false;
            }

            detail.setStatus(new Integer(1));
            FunctionUtil.update(detail, false, session);
        }

        return true;
    }

    public boolean beforDeleteForm(HttpServletRequest request,
                                   ContentFormForm contentFormForm,
                                   Object session)
        throws DataBaseException, ProgramException
    {
        if(contentFormForm.getContentObject() instanceof OutStock)
        {
            OutStock outStock = (OutStock)contentFormForm.getContentObject();
            Stock stock = (Stock)FunctionUtil.loadContentObject(Stock.class.getName(),outStock.getStock().getId());
            InStockDetail detail = (InStockDetail)FunctionUtil.loadContentObject(InStockDetail.class.getName(),outStock.getDetail().getId());
            try
            {
                stock.setAmount(new Integer(stock.
                    getAmount().intValue() + outStock.getAmount().intValue()));
                FunctionUtil.update(stock, false, session);
            }
            catch(Exception ex)
            {
                contentFormForm.setRetMsg("取消核減庫存產品數量出現異常");
                return false;
            }

            //將產品序列號恢復為“未占用”
            detail.setStatus(new Integer(0));
            FunctionUtil.update(detail, false, session);
        }

        return true;
    }

}