/*
 * Copyright 2012 AMG.lab, a Bull Group Company
 * 
 * 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 org.xlcloud.service.heat.parsers;

import java.util.Iterator;

import org.apache.commons.lang.StringUtils;
import org.json.JSONException;
import org.json.JSONObject;

import org.xlcloud.service.heat.template.Parameter;
import org.xlcloud.service.heat.template.Parameters;

/**
 * Implementation of {@link JSONParser} for {@link Parameters}.
 * @author Konrad Król, AMG.net
 */
public class ParametersParser implements JSONParser<Parameters> {

    private ParameterParser parameterParser = new ParameterParser();
    
    /** {@inheritDoc} 
     * @throws JSONException */
    @Override
    public Parameters fromJSON(JSONObject json) throws JSONException {
        Parameters parameters = new Parameters();
        
        @SuppressWarnings( "unchecked" )
        Iterator<String> keysIterator = (Iterator<String>) json.keys();
        
        while(keysIterator.hasNext()) {
            String parameterName = keysIterator.next();
            if(StringUtils.isBlank(parameterName)) { throw new JSONException("Parameter name can not be empty."); }
            
            JSONObject parameterJson = json.getJSONObject(parameterName);
            
            Parameter parameter = parameterParser.fromJSON(parameterJson);
            parameter.setName(parameterName);
            parameters.getParameter().add(parameter);
        }
        
        return parameters;
    }

    /** {@inheritDoc} */
    @Override
    public JSONObject fromPojo(Parameters pojo) throws JSONException {
        JSONObject jsonObject = new JSONObject();
        
        for(Parameter parameter : pojo.getParameter()) {
            jsonObject.put(parameter.getName(), parameterParser.fromPojo(parameter));
        }
        
        return jsonObject;
    }
}
