/*
    * (c) Copyright 2006-2020 by rapiddweller GmbH & Volker Bergmann. All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, is permitted under the terms of the
    * GNU General Public License.
    *
    * For redistributing this software or a derivative work under a license other
    * than the GPL-compatible Free Software License as defined by the Free
   * Software Foundation or approved by OSI, you must first obtain a commercial
   * license to this software product from rapiddweller GmbH & Volker Bergmann.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
   * REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
   * HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  package com.rapiddweller.benerator.engine.parser.xml;
  
  import com.rapiddweller.benerator.engine.DescriptorConstants;
  import com.rapiddweller.benerator.engine.Statement;
  import com.rapiddweller.benerator.engine.expression.ScriptExpression;
  import com.rapiddweller.benerator.engine.statement.EvaluateStatement;
  import com.rapiddweller.common.CollectionUtil;
  import com.rapiddweller.common.converter.String2CharConverter;
  import com.rapiddweller.script.Expression;
  import com.rapiddweller.script.expression.ConvertingExpression;
  import com.rapiddweller.script.expression.FeatureAccessExpression;
  import com.rapiddweller.script.expression.StringExpression;
  import org.w3c.dom.Element;
  
  import java.util.Set;
  
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_ASSERT;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_ENCODING;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_ID;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_INVALIDATE;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_ON_ERROR;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_OPTIMIZE;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_SEPARATOR;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_TARGET;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_TYPE;
  import static com.rapiddweller.benerator.engine.DescriptorConstants.ATT_URI;
  import static com.rapiddweller.benerator.engine.parser.xml.DescriptorParserUtil.parseAttribute;
  import static com.rapiddweller.benerator.engine.parser.xml.DescriptorParserUtil.parseBooleanExpressionAttribute;
  import static com.rapiddweller.benerator.engine.parser.xml.DescriptorParserUtil.parseScriptableElementText;
  import static com.rapiddweller.benerator.engine.parser.xml.DescriptorParserUtil.parseScriptableStringAttribute;
  
  /**
   * Parses an &lt;evaluate&gt; element in a Benerator descriptor file.<br/><br/>
   * Created: 25.10.2009 01:01:02
   *
   * @author Volker Bergmann
   * @since 0.6.0
   */
  public class EvaluateParser extends AbstractBeneratorDescriptorParser {
  
    private static final Set<String> OPTIONAL_ATTRIBUTES = CollectionUtil.toSet(
        ATT_ID, ATT_URI, ATT_TYPE, ATT_TARGET, ATT_SEPARATOR, ATT_ON_ERROR, ATT_ENCODING,
        ATT_OPTIMIZE, ATT_INVALIDATE, ATT_ASSERT);
  
    /**
     * Instantiates a new Evaluate parser.
     */
    public EvaluateParser() {
      super(null, null, OPTIONAL_ATTRIBUTES);
    }
  
    @Override
    public boolean supports(Element element, Statement[] parentPath) {
      String name = element.getNodeName();
      return DescriptorConstants.EL_EVALUATE.equals(name)
          || DescriptorConstants.EL_EXECUTE.equals(name);
    }
  
    @Override
    public EvaluateStatement doParse(Element element, Statement[] parentPath, BeneratorParseContext context) {
      boolean evaluate = DescriptorConstants.EL_EVALUATE.equals(element.getNodeName());
      if (evaluate) {
        assertAtLeastOneAttributeIsSet(element, ATT_ID, ATT_ASSERT);
      } else {
        assertAttributeIsNotSet(element, ATT_ID);
        assertAttributeIsNotSet(element, ATT_ASSERT);
      }
      Expression<String> id = parseAttribute(ATT_ID, element);
      Expression<String> text = new StringExpression(parseScriptableElementText(element, false));
      Expression<String> uri = parseScriptableStringAttribute(ATT_URI, element);
      Expression<String> type = parseAttribute(ATT_TYPE, element);
      Expression<?> targetObject = new FeatureAccessExpression<>(element.getAttribute(ATT_TARGET));
      Expression<Character> separator = new ConvertingExpression<>(parseScriptableStringAttribute(ATT_SEPARATOR, element), new String2CharConverter());
     Expression<String> onError = parseScriptableStringAttribute(ATT_ON_ERROR, element);
     Expression<String> encoding = parseScriptableStringAttribute(ATT_ENCODING, element);
     Expression<Boolean> optimize = parseBooleanExpressionAttribute(ATT_OPTIMIZE, element, false);
     Expression<Boolean> invalidate = parseBooleanExpressionAttribute(ATT_INVALIDATE, element, null);
     Expression<?> assertion = new ScriptExpression<>(element.getAttribute(ATT_ASSERT));
     return new EvaluateStatement(evaluate, id, text, uri, type, targetObject, separator, onError, encoding, optimize, invalidate, assertion);
   }
 
 }