/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.runtime.config.spring.parsers.specific;

import static org.mule.runtime.config.spring.dsl.model.ApplicationModel.PROCESSING_STRATEGY_FACTORY_ATTRIBUTE;
import static org.mule.runtime.config.spring.util.ProcessingStrategyParserUtils.configureProcessingStrategy;

import org.mule.runtime.config.spring.parsers.generic.NamedDefinitionParser;
import org.mule.runtime.core.api.config.MuleConfiguration;
import org.mule.runtime.core.api.config.MuleProperties;

import org.springframework.beans.factory.BeanDefinitionStoreException;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.ParserContext;
import org.w3c.dom.Element;

/**
 * Parses the <mule:configuration> element. If this element appears in multiple Xml config files each will its configuration to a
 * single {@link MuleConfiguration} object.
 *
 * @see MuleConfiguration
 */
public class ConfigurationDefinitionParser extends NamedDefinitionParser {

  public static final String DEFAULT_ERROR_HANDLER_ATTRIBUTE = "defaultErrorHandler-ref";
  private static final String DEFAULT_OBJECT_SERIALIZER_ATTRIBUTE = "defaultObjectSerializer-ref";

  public ConfigurationDefinitionParser() {
    super(MuleProperties.OBJECT_MULE_CONFIGURATION);
    addIgnored(DEFAULT_ERROR_HANDLER_ATTRIBUTE);
    singleton = true;
  }

  @Override
  protected Class getBeanClass(Element element) {
    return MuleConfiguration.class;
  }

  @Override
  protected void doParse(Element element, ParserContext context, BeanDefinitionBuilder builder) {
    parseExceptionStrategy(element, builder);
    parseObjectSerializer(element, builder);
    configureProcessingStrategy(element, builder, PROCESSING_STRATEGY_FACTORY_ATTRIBUTE);

    super.doParse(element, context, builder);
  }

  private void parseExceptionStrategy(Element element, BeanDefinitionBuilder builder) {
    if (element.hasAttribute(DEFAULT_ERROR_HANDLER_ATTRIBUTE)) {
      builder.addPropertyValue("defaultErrorHandlerName", element.getAttribute(DEFAULT_ERROR_HANDLER_ATTRIBUTE));
    }
  }

  private void parseObjectSerializer(Element element, BeanDefinitionBuilder builder) {
    if (element.hasAttribute(DEFAULT_OBJECT_SERIALIZER_ATTRIBUTE)) {
      builder.addPropertyReference("defaultObjectSerializer", element.getAttribute(DEFAULT_OBJECT_SERIALIZER_ATTRIBUTE));
    }
  }

  @Override
  protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext)
      throws BeanDefinitionStoreException {
    return MuleProperties.OBJECT_MULE_CONFIGURATION;
  }

}