/*
    * 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.hadoop.chukwa.rest.resource;
  
  import java.util.HashMap;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.hadoop.chukwa.rest.bean.CatalogBean;
  
  import org.apache.hadoop.chukwa.rest.bean.ReturnCodeBean;
  import org.apache.hadoop.chukwa.rest.bean.WidgetBean;
  import org.apache.hadoop.chukwa.datastore.WidgetStore;
  
  
  import javax.ws.rs.Consumes;
  import javax.ws.rs.GET;
  import javax.ws.rs.PUT;
  import javax.ws.rs.Path;
  import javax.ws.rs.PathParam;
  import javax.ws.rs.WebApplicationException;
  import javax.ws.rs.core.Response;
  
  @Path ("/widget")
  public class WidgetResource {
    private static Log log = LogFactory.getLog(WidgetResource.class);
    
    @GET
    @Path("wid/{wid}")
    public WidgetBean getProfile(@PathParam("wid") String wid) {
      HashMap<String, WidgetBean> list;
      try {
        list = WidgetStore.list();
      } catch (IllegalAccessException e) {
        throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND)
            .entity("Widget does not exist.").build());
      }
      return list.get(wid);
    }
    
    @PUT
    @Consumes("application/json")
    public ReturnCodeBean saveWidget(WidgetBean widget) {
      try {
        WidgetStore ws = new WidgetStore();
        ws.set(widget);
      } catch(Exception e) {
        throw new WebApplicationException(Response.status(Response.Status.NOT_FOUND)
            .entity("Widget save failed.").build());
      }
      return new ReturnCodeBean(ReturnCodeBean.SUCCESS,"Saved");
    }
    
    @GET
    @Path("catalog")
    public CatalogBean getWidgetCatalog() {
      CatalogBean result;
      try {
        result = WidgetStore.getCatalog();
      } catch (IllegalAccessException e) {
        throw new WebApplicationException(Response.status(Response.Status.INTERNAL_SERVER_ERROR)
            .entity("No catalog exists.").build());
      }
      return result;
    }
  }