package Servlet;

import muffon.constructor.Profile;
import muffon.dao.ProfileDAO;

import javax.servlet.RequestDispatcher;
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 java.io.IOException;
import java.util.HashMap;
import java.util.ResourceBundle;

@WebServlet(name = "Servlet", urlPatterns = {"/Servlet"})
public class Servlet extends HttpServlet{

    private static final String INSERT = "/profile.jsp";
    private static final String EDIT = "/edit.jsp";
    private static final String PROFILE_RECORD = "/listProfile.jsp";
    private static final String ERROR = "/error.jsp";
    private String userName;
    private String nickName;
    private String userMail;
    private String password;
    private HashMap<Object, Object> errors = new HashMap<>();

    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html; charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        super.service(request, response);
    }
    public boolean validate(){
        boolean noError = true;
        if (userName.equals("")){
            errors.put("userName","Пожалуйста заполните ваше имя");
            noError = false;}
        if (nickName.equals("")){
            errors.put("nickName","Пожалуйста заполните ваш ник");
            noError = false;}
        if (userMail.equals("")||(userMail.indexOf('@') == -1)) {
            errors.put("userMail","Пожалуйста заполните ваш адрес email");
            noError = false;}
        if (password.equals("")) {
            errors.put("password","Пожалуйста заполните пароль");
            noError = false;
        } return noError;
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String redirect="";
        String profileId = request.getParameter("id");
        String action = request.getParameter("action");
        try {
            HttpSession session = request.getSession();
            ProfileDAO instance = (ProfileDAO) session.getAttribute("DAO");
            Profile profile = new Profile();
            if(!((profileId)== null) && action.equalsIgnoreCase("insert")){
                int id = Integer.parseInt(profileId);
                userName = request.getParameter("userName");
                nickName = request.getParameter("nickName");
                userMail = request.getParameter("userMail");
                password = request.getParameter("password");
                    if(validate()){
                        profile.setId(id);
                        profile.setUserName(userName);
                        profile.setNickName(nickName);
                        profile.setUserMail(userMail);
                        profile.setPassword(password);
                        instance.insertProfile(profile);
                        request.setAttribute("profile", instance.selectAllProfiles());
                        redirect = PROFILE_RECORD;
                    } else {
                        session.setAttribute("messageError", errors);
                        redirect = PROFILE_RECORD;
                    }
            } else if (action.equalsIgnoreCase("delete")){
                int profileDelete = Integer.parseInt(profileId);
                instance.deleteProfileId(profileDelete);
                    redirect = PROFILE_RECORD;
                request.setAttribute("profile", instance.selectAllProfiles());
            } else if (action.equalsIgnoreCase("editForm")){
                    redirect = EDIT;
            } else if (action.equalsIgnoreCase("edit")){
                String Id = request.getParameter("id");
                int profileEdit = Integer.parseInt(Id);
                    profile.setId(profileEdit);
                    userName = request.getParameter("userName");
                    nickName = request.getParameter("nickName");
                    userMail = request.getParameter("userMail");
                    password = request.getParameter("password");
                if(validate()) {
                    profile.setUserName(userName);
                    profile.setNickName(nickName);
                    profile.setUserMail(userMail);
                    profile.setPassword(password);
                    request.setAttribute("profile", profile);
                    instance.updateProfile(profile);
                    redirect = PROFILE_RECORD;
                }
            } else if (action.equalsIgnoreCase("listProfile")) {
                redirect = PROFILE_RECORD;
                request.setAttribute("profile", instance.selectAllProfiles());
            } else if (action.equalsIgnoreCase("error")){
                redirect = ERROR;
            } else {
                redirect = INSERT;
            }
        } catch (Exception e){
          e.printStackTrace();
            redirect = ERROR;
        }
        RequestDispatcher rd = request.getRequestDispatcher(redirect);
        rd.forward(request, response);
    }
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }
}


JSP

<%@ page import="java.util.HashMap" %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<html>
<head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <title>Добавление профиля</title>
</head>
<body>
<%
    HashMap<String,String> errors = (HashMap<String, String>) session.getAttribute("errors");
%>
<form method="post" action='Servlet' name="frmAddUser">
    <input type="hidden" name="action" value="insert" />
    <input type="hidden" name="id" value="0">
    <p><b>Заполните форму</b></p>
    <table>
        <tr>
            <td>Имя</td>
            <td><input type="text" name="userName" /><%=errors.get("userName")%></td>
        </tr>
        <tr>
            <td>Ник</td>
            <td><input type="text" name="nickName"/><%=errors.get("nickName")%></td>
        </tr>
        <tr>
            <td>Email</td>
            <td><input type="text" name="userMail"/><%=errors.get("userMail")%></td>
        </tr>
        <tr>
            <td>Пароль</td>
            <td><input type="text" name="password"/><%=errors.get("password")%></td>
        </tr>
        <tr>
            <td></td>
            <td><input type="submit" value="Добавить" /></td>
        </tr>
    </table>
</form>
<p><a href="Servlet?action=listProfile">Просмотреть таблицу</a></p>
</body>
</html>