@@ -0,0 +1,3055 @@
+// Copyright 2019 Google LLC%0A//%0A// Licensed under the Apache License, Version 2.0 (the %22License%22);%0A// you may not use this file except in compliance with the License.%0A// You may obtain a copy of the License at%0A//%0A//     https://www.apache.org/licenses/LICENSE-2.0%0A//%0A// Unless required by applicable law or agreed to in writing, software%0A// distributed under the License is distributed on an %22AS IS%22 BASIS,%0A// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A// See the License for the specific language governing permissions and%0A// limitations under the License.%0A%0Apackage com.google.sps.servlets;%0A%0Aimport static com.google.sps.Utils.getParameter;%0A%0Aimport com.google.appengine.api.datastore.DatastoreService;%0Aimport com.google.appengine.api.datastore.DatastoreServiceFactory;%0Aimport com.google.appengine.api.datastore.Entity;%0Aimport com.google.appengine.api.datastore.EntityNotFoundException;%0Aimport com.google.appengine.api.datastore.Key;%0Aimport com.google.appengine.api.datastore.KeyFactory;%0Aimport com.google.appengine.api.datastore.Query;%0Aimport com.google.gson.Gson;%0Aimport com.google.sps.Firebase;%0Aimport com.google.sps.Utils;%0Aimport java.io.IOException;%0Aimport java.util.Arrays;%0Aimport java.util.logging.Logger;%0Aimport javax.servlet.ServletException;%0Aimport javax.servlet.annotation.WebServlet;%0Aimport javax.servlet.http.HttpServlet;%0Aimport javax.servlet.http.HttpServletRequest;%0Aimport javax.servlet.http.HttpServletResponse;%0A%0A@WebServlet(%22/confirm-user%22)%0Apublic class DeleteEventServlet extends HttpServlet %7B%0A%0A  private static final Logger LOGGER = Logger.getLogger(LoadEventServlet.class.getName());%0A%0A  @Override%0A  public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException %7B%0A    String userToken = request.getParameter(%22userToken%22);%0A    String userID = Firebase.authenticateUser(userToken);%0A%0A    Key keyRequested = getEventKey(request, %22event%22);%0A    Query query = new Query(%22Event%22, keyRequested);%0A%0A    DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();%0A    Entity eventRequested = datastore.prepare(query).asSingleEntity();%0A%0A    String creator = eventRequested.getProperty(%22creator%22).toString();%0A%0A    response.setContentType(%22text/html%22);%0A    PrintWriter out = response.getWriter();%0A    if (creator.equals(userID)) %7B%0A      out.append(%22true%22);%0A    %7D else %7B%0A      out.append(%22false%22);%0A    %7D%0A    out.close();%0A  %7D%0A%0A  /**%0A   * Retrieves the key string (if any) from the request parameter and converts it to type Key.%0A   *%0A   * @return the key from the request parameter.%0A   */%0A  private Key getEventKey(HttpServletRequest request, String name)%0A      throws IllegalArgumentException, IOException %7B%0A    Key eventKey = null;%0A%0A    if (request.getParameter(name) == null) %7B%0A      throw new IOException(%22Request is missing parameter%22);%0A    %7D%0A%0A    // Get the event key string from the request.%0A    String eventKeyString = request.getParameter(name);%0A%0A    // Convert String to type Key.%0A    eventKey = KeyFactory.stringToKey(eventKeyString);%0A%0A    return eventKey;%0A  %7D%0A%7D%0A

Add doPost for confirm user