/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.access.boolex;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import ch.qos.logback.access.spi.IAccessEvent;
  import ch.qos.logback.core.CoreConstants;
  import ch.qos.logback.core.boolex.JaninoEventEvaluatorBase;
  import ch.qos.logback.core.boolex.Matcher;
  
  public class JaninoEventEvaluator extends JaninoEventEvaluatorBase<IAccessEvent> {
  
      public final static List<String> DEFAULT_PARAM_NAME_LIST = new ArrayList<>();
      public final static List<Class<?>> DEFAULT_PARAM_TYPE_LIST = new ArrayList<>();
  
      static {
          DEFAULT_PARAM_NAME_LIST.add("event");
          DEFAULT_PARAM_TYPE_LIST.add(IAccessEvent.class);
      }
  
      @Override
      protected String getDecoratedExpression() {
          String expression = getExpression();
          if (!expression.contains("return")) {
              expression = "return " + expression + ";";
              addInfo("Adding [return] prefix and a semicolon suffix. Expression becomes [" + expression + "]");
              addInfo("See also " + CoreConstants.CODES_URL + "#block");
          }
          return expression;
      }
  
      @Override
      protected String[] getParameterNames() {
          List<String> fullNameList = new ArrayList<String>();
          fullNameList.addAll(DEFAULT_PARAM_NAME_LIST);
  
          for (int i = 0; i < matcherList.size(); i++) {
              Matcher m = (Matcher) matcherList.get(i);
              fullNameList.add(m.getName());
          }
  
          return (String[]) fullNameList.toArray(CoreConstants.EMPTY_STRING_ARRAY);
      }
  
      @Override
      protected Class<?>[] getParameterTypes() {
          List<Class<?>> fullTypeList = new ArrayList<>();
          fullTypeList.addAll(DEFAULT_PARAM_TYPE_LIST);
          for (int i = 0; i < matcherList.size(); i++) {
              fullTypeList.add(Matcher.class);
          }
          return (Class[]) fullTypeList.toArray(CoreConstants.EMPTY_CLASS_ARRAY);
      }
  
      @Override
      protected Object[] getParameterValues(IAccessEvent accessEvent) {
          final int matcherListSize = matcherList.size();
  
          int i = 0;
          Object[] values = new Object[DEFAULT_PARAM_NAME_LIST.size() + matcherListSize];
  
          values[i++] = accessEvent;
  
          for (int j = 0; j < matcherListSize; j++) {
              values[i++] = matcherList.get(j);
          }
  
          return values;
      }
  
  }