/*

  * 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.InputStream;

 import java.io.Reader;

 import java.io.Serializable;

 import java.nio.charset.Charset;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.HashMap;

 import java.util.Map;

 import java.util.logging.Logger;

 import javax.json.JsonReader;

 import javax.json.JsonReaderFactory;

 import static java.util.Arrays.asList;

 class JsonReaderFactoryImpl implements JsonReaderFactory, Serializable {

     private static final Logger LOGGER = Logger.getLogger(JsonReaderFactoryImpl.class.getName());

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

     private static final Collection<String> SUPPORTED_CONFIG_KEYS = asList(

         JsonParserFactoryImpl.BUFFER_STRATEGY, JsonParserFactoryImpl.MAX_STRING_LENGTH,

         JsonParserFactoryImpl.BUFFER_LENGTH, JsonParserFactoryImpl.SUPPORTS_COMMENTS

     );

     private final JsonParserFactoryImpl parserFactory;

     JsonReaderFactoryImpl(final Map<String, ?> config) {

         if(config != null) {

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

                 if(SUPPORTED_CONFIG_KEYS.contains(configKey)) {

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

                 } else {

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

                 }

             }

             this.parserFactory = new JsonParserFactoryImpl(internalConfig);

         } else {

             this.parserFactory = new JsonParserFactoryImpl(null);

         }

     }

     @Override

     public JsonReader createReader(final Reader reader) {

         return new JsonReaderImpl(parserFactory.createInternalParser(reader));

     }

     @Override

     public JsonReader createReader(final InputStream in) {

         return new JsonReaderImpl(parserFactory.createInternalParser(in));

     }

     @Override

     public JsonReader createReader(final InputStream in, final Charset charset) {

         return new JsonReaderImpl(parserFactory.createInternalParser(in, charset));

     }

     @Override

     public Map<String, ?> getConfigInUse() {

         return Collections.unmodifiableMap(internalConfig);

     }

 }