package org.apache.taverna.biocatalogue.model;
/*
 * 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.
 */

import org.apache.log4j.Logger;
import org.biocatalogue.x2009.xml.rest.HttpVerb;

import org.apache.taverna.activities.rest.RESTActivity.HTTP_METHOD;

/**
 * Very simple class for translating HTTP method values returned
 * by the BioCatalogue API into the set of values that are used
 * by the REST activity.
 * 
 * @author Sergejs Aleksejevs
 */
public class HTTPMethodInterpreter
{
  // deny instantiation of this class
  private HTTPMethodInterpreter() { }
  
  public static HTTP_METHOD getHTTPMethodForRESTActivity(HttpVerb.Enum httpVerb)
  {
    switch (httpVerb.intValue()) {
      case HttpVerb.INT_GET: return HTTP_METHOD.GET;
      case HttpVerb.INT_POST: return HTTP_METHOD.POST;
      case HttpVerb.INT_PUT: return HTTP_METHOD.PUT;
      case HttpVerb.INT_DELETE: return HTTP_METHOD.DELETE;
      default:
        String errorMsg = "Unable to translate " + httpVerb.toString() + " to correct representation for REST activity;\n" +
        		              "this HTTP method wasn't supported at the time of implementation.";
        Logger.getLogger(HTTPMethodInterpreter.class).error(errorMsg);
        throw new UnsupportedHTTPMethodException(errorMsg);
    }
  }
  
  
  public static class UnsupportedHTTPMethodException extends IllegalArgumentException
  {
    public UnsupportedHTTPMethodException() {
      /* empty constructor */
    }
    
    public UnsupportedHTTPMethodException(String message) {
      super(message);
    }
  }
}