content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.camel.quarkus.support.language.deployment.dm;
  
  import java.util.Map;
  import java.util.Set;
  import java.util.concurrent.ConcurrentHashMap;
  
  import org.apache.camel.CamelContext;
  import org.apache.camel.Exchange;
  import org.apache.camel.Expression;
  import org.apache.camel.Predicate;
  import org.apache.camel.support.LanguageSupport;
  
  /**
   * {@code DryModeLanguage} is a mock language meant to collect all the expressions and predicates that are registered
   * for a specific language.
   */
  public class DryModeLanguage extends LanguageSupport {
  
      private final String name;
      private final Predicate defaultPredicate = new DryModePredicate();
      private final Expression defaultExpression = new DryModeExpression();
      private final Map<Boolean, Set<ExpressionHolder>> expressions = new ConcurrentHashMap<>();
  
      DryModeLanguage(CamelContext camelContext, String name) {
          this.name = name;
          this.setCamelContext(camelContext);
      }
  
      public String getName() {
          return name;
      }
  
      public Set<ExpressionHolder> getPredicates() {
          return expressions.getOrDefault(Boolean.TRUE, Set.of());
      }
  
      public Set<ExpressionHolder> getExpressions() {
          return expressions.getOrDefault(Boolean.FALSE, Set.of());
      }
  
      public Set<ScriptHolder> getScripts() {
          return Set.of();
      }
  
      @Override
      public Predicate createPredicate(String expression) {
          expressions.computeIfAbsent(Boolean.TRUE, mode -> ConcurrentHashMap.newKeySet())
                  .add(new ExpressionHolder(expression, loadResource(expression)));
          return defaultPredicate;
      }
  
      @Override
      public Expression createExpression(String expression) {
          expressions.computeIfAbsent(Boolean.FALSE, mode -> ConcurrentHashMap.newKeySet())
                  .add(new ExpressionHolder(expression, loadResource(expression)));
          return defaultExpression;
      }
  
      @Override
      public Predicate createPredicate(String expression, Object[] properties) {
          expressions.computeIfAbsent(Boolean.TRUE, mode -> ConcurrentHashMap.newKeySet())
                  .add(new ExpressionHolder(expression, loadResource(expression), properties));
          return defaultPredicate;
      }
  
      @Override
      public Expression createExpression(String expression, Object[] properties) {
          expressions.computeIfAbsent(Boolean.FALSE, mode -> ConcurrentHashMap.newKeySet())
                  .add(new ExpressionHolder(expression, loadResource(expression), properties));
          return defaultExpression;
      }
  
      private static class DryModePredicate implements Predicate {
  
          @Override
          public boolean matches(Exchange exchange) {
              return false;
          }
  
          @Override
          public void init(CamelContext context) {
              // nothing to do
          }
  
          @Override
          public void initPredicate(CamelContext context) {
              // nothing to do
          }
      }
  
      private static class DryModeExpression implements Expression {
  
          @SuppressWarnings("unchecked")
          @Override
          public <T> T evaluate(Exchange exchange, Class<T> type) {
              // A non-null value must be returned and the returned type is not really important for the dry mode
              return (T) new Object();
          }
  
          @Override
          public void init(CamelContext context) {
              // nothing to do
          }
      }
  }
  