package com.vote.servlet;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.vote.service.VoteService;

public class VoteServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public VoteServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html;charset=UTF-8");
		String type = request.getParameter("type");
		System.out.println(type);
		String result = "";
		if(!("".equals(type)) && type != null) {
			result = "{\"success\":true,\"data\":[";
			if(type.equals("showVote")) {
				try {
					result += new VoteService().showUser();
					result += "]}";
				} catch (SQLException e) {
					e.printStackTrace();
				}
			} else if (type.equals("vote")) {
				result = "";
				boolean flag = false;
				String uid = request.getParameter("data");
				try {
					flag = new VoteService().vote(uid);
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				if(flag) 
					result = "{\"success\":true,\"data\":\"投票成功！\"}";
				else 
					result = "{\"success\":false,\"data\":\"该ip地址已投过票！\"}";
			}
		}
		PrintWriter out = response.getWriter();
		out.print(result);
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}