package servlet.manager;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.HashMap;

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 javabean.Manager;
import net.sf.json.JSONObject;

@WebServlet("/managerLogin") // 定义Servlet的URL映射
public class ManagerLogin extends HttpServlet {

	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.getWriter().append("Served at: ").append(request.getContextPath()); // 处理GET请求，返回简单的响应
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		// 设置响应内容类型和字符编码
		response.setContentType("application/json; charset=utf8");
		PrintWriter out = response.getWriter(); // 获取输出流
		// 从请求中获取用户名和密码参数
		String user = request.getParameter("user");
		String psw = request.getParameter("psw");
		// 创建一个HashMap来存储响应数据
		HashMap<String, Object> hashMap = new HashMap<String, Object>();

		Manager manager = new Manager(); // 创建Manager对象
		String result = null; // 用于存储登录结果
		try {
			result = manager.login(user, psw); // 调用Manager对象的login方法进行登录验证
		} catch (ClassNotFoundException | SQLException e) {
			e.printStackTrace(); // 捕获并打印异常信息
		}
		if (result.equals("1")) { // 如果登录成功
			HttpSession session = request.getSession(); // 获取当前会话
			session.setAttribute("manager", user); // 在会话中存储用户名
			session.setAttribute("manager_first", "1"); // 标记为首次登录
			hashMap.put("code", 0); // 设置响应码为0表示成功
			hashMap.put("msg", "登录成功"); // 设置响应消息为登录成功
			hashMap.put("url", request.getContextPath() + "/manager/01nav.jsp"); // 设置跳转URL
		} else { // 如果登录失败
			hashMap.put("code", 1); // 设置响应码为1表示失败
			hashMap.put("msg", result); // 设置响应消息为错误信息
		}
		// 将HashMap转换为JSON对象并写入响应
		JSONObject json = JSONObject.fromObject(hashMap);
		out.write(json.toString());

	}

}