package com.webtier;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import com.domain.GoodsCancelVO;
import com.dao.GoodsOrderDao;
import com.domain.GoodsOrderVO;
import com.dao.GoodsCancelDao;

public class GoodsCancelServlet
    extends HttpServlet {
  private GoodsCancelVO cancelVO = null;
  private GoodsOrderVO orderVO = null;
  private GoodsOrderDao orderDao = null;
  private GoodsCancelDao cancelDao = null;
  private int method;

  public void doGet(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    request.setCharacterEncoding("gb2312");
    method = Integer.parseInt(request.getParameter("method"));
    cancelVO = new GoodsCancelVO();
    orderVO = new GoodsOrderVO();
    orderDao = new GoodsOrderDao();
    cancelDao = new GoodsCancelDao();
    switch (method) {
      case 0: {
        this.cancelInsert(request, response);
        break;
      }
      case 1: {
        this.cancelInsertNext(request, response);
        break;
      }
      case 2: {
        this.cancelSelect(request, response);
        break;
      }
      case 3: {
        this.insertCancel(request, response);
        break;
      }
      case 4: {
        this.cancelSelectContent(request, response);
        break;
      }
      case 5: {
        this.backCompany(request, response);
        break;
      }
      case 6: {
      this.deleteCancel(request, response);
      break;
    }

    }
  }

  //刪除退貨信息
  public void deleteCancel(HttpServletRequest request,
                           HttpServletResponse response) throws
      ServletException, IOException {
    Integer id = Integer.valueOf(request.getParameter("id"));
    int back = Integer.parseInt(request.getParameter("back"));
    int accounts=Integer.parseInt(request.getParameter("accounts"));
    String order_number=request.getParameter("order_number");
    int number=orderDao.goodsOrderAccount(order_number);
    if (back == 1) {
       cancelDao.deleteCancel(id);
    }
    else {
    orderDao.orderCancel(number+accounts,order_number);
    cancelDao.deleteCancel(id);
    }
    request.setAttribute("success", "刪除退貨信息成功！！！");
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "operation/cancelSuccess.jsp");
    requestDispatcher.forward(request, response);

  }

  public void backCompany(HttpServletRequest request,
                          HttpServletResponse response) throws
      ServletException, IOException {
    int id = Integer.parseInt(request.getParameter("id"));
    int accounts = 1;
    cancelDao.backCompany(accounts, id);
    request.setAttribute("success", "返回供應商成功！！！");
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "operation/cancelSuccess.jsp");
    requestDispatcher.forward(request, response);
  }

  //查看退貨詳細內容
  public void cancelSelectContent(HttpServletRequest request,
                                  HttpServletResponse response) throws
      ServletException, IOException {
    request.setAttribute("cancel",
                         cancelDao.cancelSelectOne(request.
        getParameter("number")));
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "operation/cancelContent.jsp");
    requestDispatcher.forward(request, response);

  }

//退貨添加
  public void insertCancel(HttpServletRequest request,
                           HttpServletResponse response) throws
      ServletException, IOException {
    String number = "noNumber";
    int cancelAccounts = Integer.parseInt(request.getParameter("accounts")); //要退貨的數量
    int orderAccounts = Integer.parseInt(request.getParameter("goodsNumber")); //已經定出多少貨物
    cancelVO.setCancel_number(number);
    cancelVO.setGoods_number(request.getParameter("cancel_goodsNumber"));
    cancelVO.setAccounts(request.getParameter("accounts"));
    cancelVO.setMoney(Float.parseFloat(request.getParameter("money")));
    cancelVO.setClient(request.getParameter("client"));
    cancelVO.setNumber(request.getParameter("number"));
    cancelVO.setEmployeeNumber(request.getParameter("employeeNumber"));
    cancelVO.setOrder_number(request.getParameter("order_number"));
    cancelVO.setReason(request.getParameter("reason"));
    cancelVO.setBack(0);
    cancelDao.cancelInsert(cancelVO);
    GoodsCancelVO vo = cancelDao.cancelSelectOne(number);
    cancelDao.cancelUpdateNumber(vo.getId(), number);
    orderDao.orderCancel(orderAccounts - cancelAccounts,
                         request.getParameter("order_number"));
    request.setAttribute("success", "添加退貨信息成功");
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "operation/cancelSuccess.jsp");
    requestDispatcher.forward(request, response);

  }

  public void cancelSelect(HttpServletRequest request,
                           HttpServletResponse response) throws
      ServletException, IOException {
    String back = "";
    List list = cancelDao.cancelSelect(back);
    int pageNumber = list.size(); //計算出有多少條記錄
    int maxPage = pageNumber; //計算有多少頁數
    String number = request.getParameter("i");
    if (maxPage % 5 == 0) {
      maxPage = maxPage / 5;
    }
    else {
      maxPage = maxPage / 5 + 1;
    }
    if (number == null) {
      number = "0";
    }
    request.setAttribute("account", String.valueOf(number));
    request.setAttribute("maxPage", String.valueOf(maxPage));
    request.setAttribute("pageNumber", String.valueOf(pageNumber));
    request.setAttribute("list", list);
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "operation/cancelSelect.jsp");
    requestDispatcher.forward(request, response);

  }

//退貨定單
  public void cancelInsert(HttpServletRequest request,
                           HttpServletResponse response) throws
      ServletException, IOException {
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        "operation/prepareCancel.jsp");
    requestDispatcher.forward(request, response);
  }

  public void cancelInsertNext(HttpServletRequest request,
                               HttpServletResponse response) throws
      ServletException, IOException {
    String url = "";
    String number = request.getParameter("number");
    GoodsOrderVO order = orderDao.goodsOrderOut(number, 1);
    if (order == null) {
      request.setAttribute("success", "您所輸入的單據號碼不存在，請重新輸入！！！");
      url = "operation/cancelDeal.jsp";
    }
    else {
      request.setAttribute("order", order);
      url = "operation/cancelInsert.jsp";
    }
    RequestDispatcher requestDispatcher = request.getRequestDispatcher(
        url);
    requestDispatcher.forward(request, response);
  }

  public void doPost(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    doGet(request, response);
  }
}