/*

  * 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.johnzon.core;

 import java.io.Serializable;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.HashMap;

 import java.util.Locale;

 import java.util.Map;

 import java.util.logging.Logger;

 public abstract class AbstractJsonFactory implements Serializable{

     protected final Logger logger = Logger.getLogger(this.getClass().getName());

     public static final String BUFFER_STRATEGY = "org.apache.johnzon.buffer-strategy";

     public static final BufferStrategy DEFAULT_BUFFER_STRATEGY = BufferStrategy.QUEUE;

     protected final Map<String, Object> internalConfig = new HashMap<String, Object>();

     protected AbstractJsonFactory(final Map<String, ?> config, Collection<String> supportedConfigKeys, Collection<String> defaultSupportedConfigKeys) {

         if(config != null) {

             if(defaultSupportedConfigKeys != null) {

                 supportedConfigKeys = new ArrayList<String>(supportedConfigKeys);

                 supportedConfigKeys.addAll(defaultSupportedConfigKeys);

             }

             for (String configKey : config.keySet()) {

                 if(supportedConfigKeys.contains(configKey)) {

                     internalConfig.put(configKey, config.get(configKey));

                 } else {

                     logger.warning(configKey + " is not supported by " + getClass().getName());

                 }

             }

         }

     }

     protected BufferStrategy getBufferProvider() {

         final Object name = internalConfig.get(BUFFER_STRATEGY);

         if (name != null) {

             return BufferStrategy.valueOf(name.toString().toUpperCase(Locale.ENGLISH));

         }

         return DEFAULT_BUFFER_STRATEGY;

     }

     protected int getInt(final String key, final int defaultValue) {

         final Object intValue = internalConfig.get(key);

         if (intValue == null) {

             return defaultValue;

         } else if (Number.class.isInstance(intValue)) {

             return Number.class.cast(intValue).intValue();

         }

         return Integer.parseInt(intValue.toString());

     }

     protected boolean getBool(final String key, final boolean defaultValue) {

         final Object boolValue = internalConfig.get(key);

         if (boolValue == null) {

             return defaultValue;

         } else if (Boolean.class.isInstance(boolValue)) {

             return Boolean.class.cast(boolValue);

         }

         return Boolean.parseBoolean(boolValue.toString());

     }

 }