Servlet.CallbackServlet.java Source code

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Here is the source code for Servlet.CallbackServlet.java

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/*
 * Copyright 2017 Andree Yosua.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package Servlet;

import Model.DBAdmin;
import Model.DirectoryAdmin;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.auth.RequestToken;

/**
 *
 * @author Andree Yosua
 */
public class CallbackServlet 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");

        Twitter twitter = (Twitter) request.getSession().getAttribute("twitter");
        RequestToken requestToken = (RequestToken) request.getSession().getAttribute("requestToken");
        String verifier = request.getParameter("oauth_verifier");

        try {
            twitter.getOAuthAccessToken(requestToken, verifier);
            request.getSession().removeAttribute("requestToken");

            String twitterIDString = Long.toString(twitter.getId());
            twitter4j.User user = twitter.showUser(twitter.getId());

            Model.User loggedUser = DBAdmin.getTwitterUser(twitterIDString);

            if (loggedUser == null) {
                String username = user.getName().replaceAll(" ", "");

                if (DBAdmin.isUsernameTaken(username)) {
                    int i = 1;
                    while (DBAdmin.isUsernameTaken(username + i)) {
                        i++;
                    }
                    username += i;
                }

                DBAdmin.registerTwitter(twitterIDString, username, "null", "", "player", user.getName(),
                        "unaffliated");
                DirectoryAdmin.prepNewUserDirectory(request, username);

                loggedUser = DBAdmin.getTwitterUser(twitterIDString);
            }

            request.getSession().setAttribute("loggedUser", loggedUser);
        } catch (IllegalStateException | TwitterException ex) {
            throw new ServletException(ex);
        }

        response.sendRedirect("main");
    }

    // <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 {
        processRequest(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 {
        processRequest(request, response);
    }

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

}