content: /**
   * 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.proxy;
  
  import org.apache.ambari.view.ViewContext;
  
  import jakarta.inject.Inject;
  import jakarta.ws.rs.GET;
  import jakarta.ws.rs.Path;
  import jakarta.ws.rs.PathParam;
  import jakarta.ws.rs.Produces;
  import jakarta.ws.rs.core.Context;
  import jakarta.ws.rs.core.HttpHeaders;
  import jakarta.ws.rs.core.Response;
  import jakarta.ws.rs.core.UriInfo;
  import java.io.IOException;
  
  /**
   * The calculator resource.
   */
  public class CalculatorResource {
    /**
     * The view context.
     */
    @Inject
    ViewContext context;
  
    /**
     * Handles: GET /calculator Get the calculator usage.
     *
     * @param headers   http headers
     * @param ui        uri info
     *
     * @return the response including the usage of the calculator resource
     */
    @GET
    @Produces({"text/html"})
    public Response getUsage(@Context HttpHeaders headers, @Context UriInfo ui) throws IOException{
  
      String entity = "<h2>Usage of calculator</h2><br>" +
          "<ul>" +
          "<li><b>calculator/add/{a}/{b}</b> - add {a} to {b}</li>" +
          "<li><b>calculator/subtract/{a}/{b}</b> - subtract {a} from {b}</li>" +
          "<li><b>calculator/multiply/{a}/{b}</b> - multiply {a} with {b}</li>" +
          "<li><b>calculator/divide/{a}/{b}</b> - divide {a} by {b}</li>" +
          "</ul>"
          ;
      return Response.ok(entity).type("text/html").build();
    }
  
    /**
     * Handles: GET /calculator/add/{a}/{b} Get the results of a + b.
     *
     * @param a  the left side operand
     * @param b  the right side operand
     *
     * @return the response including the result of a + b
     */
    @GET
    @Path("/add/{a}/{b}")
    @Produces({"text/html"})
    public Response add(@PathParam("a") double a, @PathParam("b") double b) {
      String result = a + " + " + b + " = " + (a + b);
      return Response.ok("<b>" + result + "</b>").type("text/html").build();
    }
  
    /**
     * Handles: GET /calculator/subtract/{a}/{b} Get the results of a - b.
     *
     * @param a  the left side operand
     * @param b  the right side operand
     *
     * @return the response including the result of a - b
     */
    @GET
    @Path("/subtract/{a}/{b}")
    @Produces({"text/html"})
    public Response subtract(@PathParam("a") double a, @PathParam("b") double b) {
      String result =  a + " - " + b + " = " + (a - b);
      return Response.ok("<b>" + result + "</b>").type("text/html").build();
    }
  
    /**
     * Handles: GET /calculator/multiply/{a}/{b} Get the results of a * b.
     *
     * @param a  the left side operand
     * @param b  the right side operand
     *
     * @return the response including the result of a * b
     */
    @GET
    @Path("/multiply/{a}/{b}")
    @Produces({"text/html"})
    public Response multiply(@PathParam("a") double a, @PathParam("b") double b) {
      String result =  a + " * " + b + " = " + (a * b);
      return Response.ok("<b>" + result + "</b>").type("text/html").build();
    }
  
    /**
     * Handles: GET /calculator/divide/{a}/{b} Get the results of a / b.
     *
     * @param a  the left side operand
     * @param b  the right side operand
     *
     * @return the response including the result of a / b
     */
    @GET
    @Path("/divide/{a}/{b}")
    @Produces({"text/html"})
    public Response divide(@PathParam("a") double a, @PathParam("b") double b) {
      String result =  a + " / " + b + " = " + (a / b);
      return Response.ok("<b>" + result + "</b>").type("text/html").build();
    }
  }
  