/**   
 * Copyright © 2025 eSunny Info. Tech Ltd. All rights reserved.
 * 
 * 功能描述：
 * @Package: com.chinasofti.servlet 
 * @author: 李洪涛  
 * @date: 2025年3月27日 上午9:21:53 
 */
package com.chinasofti.servlet;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.chinasofti.enums.IsCounselor;
import com.chinasofti.enums.RoleId;
import com.chinasofti.model.Clazz;
import com.chinasofti.model.Role;
import com.chinasofti.model.Teacher;
import com.chinasofti.model.User;
import com.chinasofti.service.ClazzService;
import com.chinasofti.service.LoginService;
import com.chinasofti.service.RoleService;
import com.chinasofti.service.TeacherService;
import com.chinasofti.service.impl.ClazzServiceImpl;
import com.chinasofti.service.impl.LoginServiceImpl;
import com.chinasofti.service.impl.RoleServiceImpl;
import com.chinasofti.service.impl.TeacherServiceImpl;
import com.chinasofti.utils.SM3PasswordEncoder;

/**
 * 
* Copyright: Copyright (c) 2025 chiansofti
* 
* @ClassName: LoginServlet.java
* @Description: 登录校验
*
* @version: v1.0.0
* @author: 李洪涛
* @date: 2025年3月27日 上午9:09:40 
*
* Modification History:
* Date         Author          Version            Description
*---------------------------------------------------------*
* 2025年3月27日   李洪涛        v1.0.0              新建文件
 */
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
	
	private static final long serialVersionUID = 1L;
	
	private LoginService loginService = new LoginServiceImpl();
	private RoleService roleService = new RoleServiceImpl();
	private ClazzService clazzService = new ClazzServiceImpl();
	private TeacherService teacherService = new TeacherServiceImpl();
	
	public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException, ServletException{
		doPost(request, response);
	}
    
	
	/**
	 * 
	* @see javax.servlet.http.HttpServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)  
	* @Function: doPost
	* @Description: 登录校验，跳转页面
	*
	* @param: request
	* @param: response
	* @return： void
	* @throws：无
	*
	* @version: v1.0.0
	* @author: 李洪涛
	* @date: 2025年3月27日 上午9:12:20 
	*
	* Modification History:
	* Date         Author          Version            Description
	*---------------------------------------------------------*
	* 2025年3月27日     李洪涛               		v1.0.0                                 新建方法
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		String method = request.getParameter("method");
		if("logout".equals(method)){
			logout(request, response);
			return;
		}
		
		String username = request.getParameter("username");
		String password = request.getParameter("password");
		
		User user = new User();
		user.setUserName(username);
		
		User res = loginService.loginCheck(user);
		
		String loginStatus = "loginSuccess";
		if (null != res && SM3PasswordEncoder.matches(password, res.getPassWord())) {
			HttpSession session=request.getSession();
			Role role = roleService.findRoleById(res.getRoleId());
			session.setAttribute("user", res);
			session.setAttribute("roleCode", role.getRoleCode());
			if (RoleId.TEACHER.getId() == role.getId()) {
				long userId = res.getId();
				Teacher teacher = new Teacher();
				teacher.setUserId(userId);
				teacher = teacherService.findTeacher(teacher);
				List<Clazz> clazzs = new ArrayList<Clazz>();
				long teacherId = teacher.getId();
				clazzs.addAll(clazzService.findClazzsByTeacherId(teacherId));
				if (IsCounselor.YES.getIs().equals(teacher.getIsCounselor())) {
					session.setAttribute("isCounselor", IsCounselor.YES.getIs());
					clazzs.addAll(clazzService.findClazzsByUserIds(userId+""));
				} else {
					session.setAttribute("isCounselor", IsCounselor.NO.getIs());
				}
				String clazzIdStr = "";
				if (clazzs.size() > 0) {
					for (Clazz clazz : clazzs) {
						clazzIdStr += clazz.getId() + ",";
					}
					clazzIdStr = clazzIdStr.substring(0, clazzIdStr.length()-1);
				}
				session.setAttribute("clazzIdStr", clazzIdStr);
				session.setAttribute("teacherId", teacherId);
			}
		} else {
			loginStatus = "loginError";
		}
		response.getWriter().write(loginStatus);
	}
	
	/**
	 * 
	* @Function: logout
	* @Description: 退出登录
	*
	* @param: request
	* @param: response
	* @return： void
	* @throws：无
	*
	* @version: v1.0.0
	* @author: 李洪涛
	* @date: 2025年3月27日 上午9:12:20 
	*
	* Modification History:
	* Date         Author          Version            Description
	*---------------------------------------------------------*
	* 2025年3月27日     李洪涛               		v1.0.0                                 新建方法
	 */
	private void logout(HttpServletRequest request,HttpServletResponse response) throws IOException{
		request.getSession().removeAttribute("user");
		request.getSession().removeAttribute("userType");
		response.sendRedirect("index.jsp");
	}
	
}