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/*
 * This file is part of the DITA Open Toolkit project.
 *
 * Copyright 2008 IBM Corporation
 *
 * See the accompanying LICENSE file for applicable license.

 */
package org.dita.dost.platform;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.dita.dost.log.DITAOTLogger;
import org.dita.dost.util.StringUtils;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;

/**
 * InsertDependsAction implements IAction.
 * Parses an attribute value containing comma-separated identifiers.
 * Identifiers inside braces are replaced with the plugin features for the corresponding extension point.
 * @author Deborah Pickett
 */
final class InsertDependsAction implements IAction {

  /** Action value. */
  private List value;
  /** Plug-in features. */
  private Map featureTable = null;

  @Override
  public void getResult(final ContentHandler buf) throws SAXException {
    throw new UnsupportedOperationException();
  }

  /**
   * Get result.
   * @return result
   */
  @Override
  public String getResult() {
    final List result = new ArrayList<>();
    for (final Value t : value) {
      final String token = t.value().trim();
      // Pieces which are surrounded with braces are extension points.
      if (token.startsWith("{") && token.endsWith("}")) {
        final String extension = token.substring(1, token.length() - 1);
        final String extensionInputs = Integrator.getValue(featureTable, extension);
        if (extensionInputs != null) {
          result.add(extensionInputs);
        }
      } else {
        result.add(token);
      }
    }
    if (!result.isEmpty()) {
      return StringUtils.join(result, ",");
    } else {
      return "";
    }
  }

  /**
   * Set input.
   * @param input input
   */
  @Override
  public void setInput(final List input) {
    value = input;
  }

  @Override
  public void addParam(final String name, final String value) {}

  /**
   * Set the feature table.
   * @param h hastable
   */
  @Override
  public void setFeatures(final Map h) {
    featureTable = h;
  }

  @Override
  public void setLogger(final DITAOTLogger logger) {}
}