/*
 * 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.delegate;

import org.mule.runtime.config.spring.MuleHierarchicalBeanDefinitionParserDelegate;
import org.mule.runtime.config.spring.parsers.MuleDefinitionParser;
import org.mule.runtime.config.spring.parsers.MuleDefinitionParserConfiguration;
import org.mule.runtime.config.spring.parsers.PostProcessor;
import org.mule.runtime.config.spring.parsers.PreProcessor;
import org.mule.runtime.config.spring.parsers.assembly.configuration.ValueMap;
import org.mule.runtime.config.spring.parsers.generic.AutoIdUtils;
import org.mule.runtime.core.util.ArrayUtils;

import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.xml.AbstractBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.w3c.dom.Element;

/**
 * This allows a definition parsers to be dynamically represented by different definition parsers, depending on the context. For
 * example, a single model may be defined across file - the first use defines the model and subsequent uses extend it (for this
 * particular case, see {@link InheritDefinitionParser}).
 *
 * <p>
 * Note that the sub-parsers must be consistent. That includes matching the same schema, for example.
 * </p>
 */
public abstract class AbstractDelegatingDefinitionParser extends AbstractBeanDefinitionParser implements MuleDefinitionParser {

  protected Logger logger = LoggerFactory.getLogger(getClass());

  private MuleDefinitionParser[] delegates;

  protected AbstractDelegatingDefinitionParser() {
    this(new MuleDefinitionParser[0]);
  }

  protected AbstractDelegatingDefinitionParser(MuleDefinitionParser[] delegates) {
    this.delegates = delegates;
    addBeanFlag(MuleHierarchicalBeanDefinitionParserDelegate.MULE_FORCE_RECURSE);
  }

  protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
    return muleParse(element, parserContext);
  }

  protected MuleDefinitionParserConfiguration addDelegate(MuleDefinitionParser delegate) {
    delegates = (MuleDefinitionParser[]) ArrayUtils.add(delegates, delegate);
    return delegate;
  }

  protected int size() {
    return delegates.length;
  }

  protected MuleDefinitionParser getDelegate(int index) {
    return delegates[index];
  }

  public MuleDefinitionParserConfiguration registerPreProcessor(PreProcessor preProcessor) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].registerPreProcessor(preProcessor);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration registerPostProcessor(PostProcessor postProcessor) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].registerPostProcessor(postProcessor);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration addReference(String propertyName) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].addReference(propertyName);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration addMapping(String propertyName, Map mappings) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].addMapping(propertyName, mappings);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration addMapping(String propertyName, String mappings) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].addMapping(propertyName, mappings);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration addMapping(String propertyName, ValueMap mappings) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].addMapping(propertyName, mappings);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration addAlias(String alias, String propertyName) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].addAlias(alias, propertyName);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration addCollection(String propertyName) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].addCollection(propertyName);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration addIgnored(String propertyName) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].addIgnored(propertyName);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration removeIgnored(String propertyName) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].removeIgnored(propertyName);
    }
    return this;
  }

  public MuleDefinitionParserConfiguration setIgnoredDefault(boolean ignoreAll) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].setIgnoredDefault(ignoreAll);
    }
    return this;
  }

  public String getBeanName(Element element) {
    return AutoIdUtils.getUniqueName(element, "delegate");
  }

  public MuleDefinitionParserConfiguration addBeanFlag(String flag) {
    for (int i = 0; i < delegates.length; ++i) {
      delegates[i].addBeanFlag(flag);
    }
    return this;
  }
}