import java.io.IOException;

import java.io.PrintWriter;

import java.util.Iterator;

import java.util.List;



import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;





public class ActionServlet extends HttpServlet{

	public void service(HttpServletRequest request,HttpServletResponse response)

		throws ServletException,IOException{

		request.setCharacterEncoding("UTF-8");

		response.setContentType("text/html;charset=UTF-8");

		

		String path = request.getRequestURI();

		String uri =  path.substring(path.lastIndexOf("/"),path.lastIndexOf("."));

		

//		System.out.println(path);

//		System.out.println(uri);

		

		if(uri.equals("/showAllEmp")){

			EmployeeDAO dao = (EmployeeDAO)FactoryDAO.getInstanceOf("EmployeeDAO");

			List<Employee> list = dao.findAllEmp();

			

			PrintWriter out = response.getWriter();

			

			if(list.isEmpty()){

				out.println("没有雇员，请<a href = 'addEmp.html'>添加</a>");

			}else{

				out.println("<table width='60%' border='2' cellspace='3' cellpadding='3'>");

				out.println("<tr><td>ID</td><td>姓名</td><td>年龄</td><td>薪水</td><td>操作</td></tr>");

				Iterator<Employee> it = list.iterator();

				while(it.hasNext()){

					Employee emp = it.next();

					out.println("<tr><td>" + emp.getId() + "</td><td>" + emp.getName() + 

							"</td><td>" + emp.getAge() + "</td><td>" + emp.getSalary() + 

							"</td><td><a href='deleteEmp.do?id=" + emp.getId() + "'>删除</a>&nbsp&nbsp" +

							"<a href='showSingleEmp.do?id=" + emp.getId() + "'>修改</a></td></tr>");

				}

				out.println("</table>");

				out.println("<a href='addEmp.html'>添加雇员</a>");

				

				out.close();

			}

		}else if(uri.equals("/addEmp")){

			

			int id = Integer.parseInt(request.getParameter("id"));

			String name = request.getParameter("name");

			int age = Integer.parseInt(request.getParameter("age"));

			Long salary = Long.parseLong(request.getParameter("salary"));

			

			Employee emp = new Employee();

			emp.setId(id);

			emp.setName(name);

			emp.setAge(age);

			emp.setSalary(salary);

			

			EmployeeDAO dao = (EmployeeDAO)FactoryDAO.getInstanceOf("EmployeeDAO");

			dao.addEmp(emp);

			

			response.sendRedirect("showAllEmp.do");

		}else if(uri.equals("/deleteEmp")){

			int id = Integer.parseInt(request.getParameter("id"));

			EmployeeDAO dao = (EmployeeDAO)FactoryDAO.getInstanceOf("EmployeeDAO");

			dao.deleteEmp(id);