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/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * 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 com.android.vts.servlet;

import static com.googlecode.objectify.ObjectifyService.ofy;

import com.android.vts.entity.TestEntity;
import com.google.appengine.api.datastore.DatastoreService;
import com.google.appengine.api.datastore.DatastoreServiceFactory;
import com.google.appengine.api.datastore.Entity;
import com.google.appengine.api.datastore.Query;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.stream.Collectors;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet for handling requests to display profiling tests.
 */
public class ShowProfilingListServlet extends BaseServlet {

  private static final String PROFILING_LIST_JSP = "WEB-INF/jsp/show_profiling_list.jsp";

  @Override
  public PageType getNavParentType() {
    return PageType.PROFILING_LIST;
  }

  @Override
  public List<Page> getBreadcrumbLinks(HttpServletRequest request) {
    return null;
  }

  @Override
  public void doGetHandler(HttpServletRequest request, HttpServletResponse response)
      throws IOException {
    List<String> tests = ofy().load().type(TestEntity.class)
        .filter(TestEntity.HAS_PROFILING_DATA, true).list().stream()
        .sorted(Comparator.comparing(TestEntity::getTestName)).map(t -> t.getTestName())
        .collect(Collectors.toList());

    response.setStatus(HttpServletResponse.SC_OK);
    request.setAttribute("testNames", tests);
    RequestDispatcher dispatcher = request.getRequestDispatcher(PROFILING_LIST_JSP);
    try {
      dispatcher.forward(request, response);
    } catch (ServletException e) {
      logger.log(Level.SEVERE, "Servlet Excpetion caught : ", e);
    }
  }
}