/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.ambari.view.hive20;

import org.apache.ambari.view.ViewContext;
import org.apache.ambari.view.ViewResourceHandler;
import org.apache.ambari.view.hive20.resources.files.FileService;
import org.apache.ambari.view.hive20.resources.jobs.atsJobs.ATSParserFactory;
import org.apache.ambari.view.hive20.resources.jobs.atsJobs.ATSRequestsDelegateImpl;
import org.json.simple.JSONObject;

import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.IOException;

/**
 * Help service
 */
public class HelpService extends BaseService {
  @Inject
  ViewContext context;

  @Inject
  protected ViewResourceHandler handler;

  /**
   * Constructor
   */
  public HelpService() {
    super();
  }

  /**
   * Version
   * @return version
   */
  @GET
  @Path("/version")
  @Produces(MediaType.TEXT_PLAIN)
  public Response version(){
    return Response.ok("0.0.1-SNAPSHOT").build();
  }

  // ================================================================================
  // Smoke tests
  // ================================================================================

  /**
   * HDFS Status
   * @return status
   */
  @GET
  @Path("/hdfsStatus")
  @Produces(MediaType.APPLICATION_JSON)
  public Response hdfsStatus(){
    FileService.hdfsSmokeTest(context);
    return getOKResponse();
  }

  /**
   * HomeDirectory Status
   * @return status
   */
  @GET
  @Path("/userhomeStatus")
  @Produces(MediaType.APPLICATION_JSON)
  public Response userhomeStatus (){
    FileService.userhomeSmokeTest(context);
    return getOKResponse();
  }


  /**
   * ATS Status
   * @return status
   */
  @GET
  @Path("/atsStatus")
  @Produces(MediaType.APPLICATION_JSON)
  public Response atsStatus() {
    try {
      ATSRequestsDelegateImpl atsimpl = new ATSRequestsDelegateImpl(context,  new ATSParserFactory(context).getATSUrl());
      atsimpl.checkATSStatus();
      return getOKResponse();
    }catch (IOException e){
      throw new WebApplicationException(e);
    }
  }

  private Response getOKResponse() {
    JSONObject response = new JSONObject();
    response.put("message", "OK");
    response.put("trace", null);
    response.put("status", "200");
    return Response.ok().entity(response).type(MediaType.APPLICATION_JSON).build();
  }

  /**
   * Version
   * @return version
   */
  @GET
  @Path("/test")
  @Produces(MediaType.TEXT_PLAIN)
  public Response testStorage(){
    TestBean test = new TestBean();
    test.someData = "hello world";
    getSharedObjectsFactory().getStorage().store(TestBean.class, test);
    return Response.ok("OK").build();
  }
}