AccountController

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/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/JSP_Servlet/Servlet.java to edit this template
 */
package Controllers;

import DAOs.AccountDAO;
import DAOs.EmailSender;
import Models.Account;
import java.io.IOException;
import java.io.PrintWriter;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.Cookie;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author MSI GTX
 */
public class AccountController extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try ( PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet AccountController</title>");
            out.println("<script src=\"https://cdn.jsdelivr.net/npm/sweetalert2@10\"></script>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet AccountController at " + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        AccountDAO dao = new AccountDAO();
        String path = request.getRequestURI();
        if (path.endsWith("/AccountController/index")) {
            request.getRequestDispatcher("/index.jsp").forward(request, response);
        } else {
            if (path.endsWith("/AccountController/login")) {
                request.getRequestDispatcher("/login.jsp").forward(request, response);
            } else {
                if (path.endsWith("/AccountController/forgot")) {
                    request.getRequestDispatcher("/forgot.jsp").forward(request, response);
                } else {
                    if (path.endsWith("/AccountController/pin")) {
                        request.getRequestDispatcher("/pin.jsp").forward(request, response);
                    }
                }
            }
        }
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        AccountDAO dao = new AccountDAO();
        EmailSender em = new EmailSender();

        //tạo tài khoản 
        if (request.getParameter("btnsignup") != null && request.getParameter("btnsignup").equals("Sign Up")) {
            String fullname = request.getParameter("fullname");
            String emails = request.getParameter("emails");
            String address = request.getParameter("address");
            int phone = Integer.parseInt(request.getParameter("phone"));
            String password = request.getParameter("passwords");
            boolean checkEmail = dao.checkemail(emails);
            String hashedPassword = dao.encryptToMD5(password);
            // kiểm tra email có tồn tại hay chưa
            if (checkEmail) {
//                response.getWriter().write("<script>alert('The email already exists in the database.');</script>");
//                response.getWriter().write("<script>window.history.back();</script>");
                response.getWriter().write("<script>Swal.fire('Error', 'The email already exists in the database.', 'error').then(() => window.history.back());</script>");

            } else {
                //gửi thông báo tới email người dùng chưa làm được 

                int pin = em.generateRandomPin(); // Generate a random PIN

                //thêm tài khoản vào account có băm mật khẩu
                Account ac = new Account(fullname, emails, address, phone, hashedPassword, pin);
                int kq = dao.AddAccount(ac);
                if (kq == 0) {
                    //nếu sai thì báo là không tạo được và vẫn ở lại trang
//                    response.getWriter().write("<script>alert('Registration failed.');</script>");
//                    response.getWriter().write("<script>window.location.href='/AccountController/login';</script>");
                    response.getWriter().write("<script>Swal.fire('Error', 'Registration failed.', 'error').then(() => window.location.href='/AccountController/login');</script>");
                } else {
                    HttpSession session = request.getSession();
                    session.setAttribute("registeredEmail", emails);
                    em.sendRegistrationEmail(emails, pin);
                    //tạo được thì báo thành công chuyển qua trang index
                    response.getWriter().write("<script>alert('Registration successful.');</script>");
                    response.getWriter().write("<script>window.location.href='/AccountController/pin';</script>");
                }
            }
        }
        // dăng nhập tài khoản
        if (request.getParameter("btnlogin") != null && request.getParameter("btnlogin").equals("Login")) {
            boolean kq = false;
            try {
                String email = request.getParameter("email");
                String pass = request.getParameter("password");

                Account acc = new Account(null, email, null, 0, pass, 0);
                kq = dao.login(acc);
                if (kq) {
//                    //tạo cookie có giá trị trong 3 ngày  
                    Cookie c = new Cookie("quantri", email);
                    c.setMaxAge(3 * 60 * 60);
                    response.addCookie(c);
                    c.setPath("/");
                    response.sendRedirect("/AccountController/index");
                } else {
                    response.getWriter().write("<script>window.history.back();</script>");
                    response.getWriter().write("document.getElementById(\"password-error\").innerText = \"sai email\";");
                }
            } catch (SQLException ex) {
                Logger.getLogger(AccountController.class.getName()).log(Level.SEVERE, null, ex);
            }
        }

        if (request.getParameter("btnforgot") != null && request.getParameter("btnforgot").equals("Kiểm tra")) {
            String emailse = request.getParameter("emailse");
            boolean checkEmail = dao.checkemail(emailse);
            int pina = em.generateRandomPin(); // Generate a random PIN

            if (checkEmail) {
                HttpSession session = request.getSession();
                session.setAttribute("emailse", emailse);
                em.sendForgotEmail(emailse, pina);
                Account acs = new Account(null, emailse, null, 0, null, pina);
                int kq = dao.updatePin(acs);
                response.getWriter().write("<script>window.location.href='/AccountController/pin';</script>");
            } else {
                response.getWriter().write("<script>window.history.back();</script>");
            }
        }

        if (request.getParameter("btnforgotpass") != null && request.getParameter("btnforgotpass").equals("SignUp")) {
            String passwords = request.getParameter("password");
            HttpSession session = request.getSession();
            String emailse = (String) session.getAttribute("emailse");
            String hashedPassword = dao.encryptToMD5(passwords);

            Account aac = new Account(null, emailse, null, 0, hashedPassword, 0);
            int kq = dao.Update(aac);
            if (kq == 0) {
                response.getWriter().write("<script>window.location.href='/AccountController/forgot';</script>");
            } else {
                response.getWriter().write("<script>window.location.href='/AccountController/login';</script>");
            }
        }

        if (request.getParameter("submit-pin") != null && request.getParameter("submit-pin").equals("Check PIN")) {
            boolean kq;
            try {
                String pin = request.getParameter("pin");
                int spin = Integer.valueOf(pin);
                Account ac = new Account(null, null, null, 0, null, spin);
                kq = dao.checkpin(ac);
                if (kq) {
                    response.sendRedirect("/AccountController/index");
                } else {
                    response.getWriter().write("<script>window.history.back();</script>");
                }
            } catch (SQLException ex) {
                Logger.getLogger(AccountController.class.getName()).log(Level.SEVERE, null, ex);
            }

        }
        if (request.getParameter("delete") != null && request.getParameter("delete").equals("DELETE")) {
            HttpSession session = request.getSession();
            String emailToDelete = (String) session.getAttribute("registeredEmail");

            //dao.DeleteAccount(emailToDelete);
            int result = dao.DeleteAccount(emailToDelete);

            if (result > 0) {
                response.sendRedirect("/AccountController/login");
                // Xóa email khỏi session sau khi đã xóa tài khoản
                session.removeAttribute("registeredEmail");
            } else {
                response.getWriter().write("<script>alert('Account deletion failed.');</script>");
            }
        }
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
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