/**
    * Copyright 2005-2013 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krms.framework;
  
  import static junit.framework.Assert.assertNotNull;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.junit.Test;
  import org.kuali.rice.krms.api.engine.EngineResults;
  import org.kuali.rice.krms.api.engine.ExecutionOptions;
  import org.kuali.rice.krms.api.engine.ExecutionFlag;
  import org.kuali.rice.krms.api.engine.Facts;
  import org.kuali.rice.krms.api.engine.SelectionCriteria;
  import org.kuali.rice.krms.api.engine.Term;
  import org.kuali.rice.krms.api.engine.TermResolver;
  import org.kuali.rice.krms.api.repository.LogicalOperator;
  import org.kuali.rice.krms.api.repository.agenda.AgendaDefinition;
  import org.kuali.rice.krms.framework.engine.Action;
  import org.kuali.rice.krms.framework.engine.Agenda;
  import org.kuali.rice.krms.framework.engine.BasicAgenda;
  import org.kuali.rice.krms.framework.engine.BasicAgendaTree;
  import org.kuali.rice.krms.framework.engine.BasicAgendaTreeEntry;
  import org.kuali.rice.krms.framework.engine.BasicContext;
  import org.kuali.rice.krms.framework.engine.BasicRule;
  import org.kuali.rice.krms.framework.engine.ComparableTermBasedProposition;
  import org.kuali.rice.krms.framework.engine.CompoundProposition;
  import org.kuali.rice.krms.framework.engine.Context;
  import org.kuali.rice.krms.framework.engine.ContextProvider;
  import org.kuali.rice.krms.framework.engine.Proposition;
  import org.kuali.rice.krms.framework.engine.ProviderBasedEngine;
  import org.kuali.rice.krms.framework.engine.ResultLogger;
  import org.kuali.rice.krms.framework.engine.Rule;
  import org.kuali.rice.krms.framework.engine.expression.ComparisonOperator;
  import org.kuali.rice.krms.framework.engine.expression.ComparisonOperatorServiceImpl;
  
  public class ResultLoggingTest {
  	private static final ResultLogger LOG = ResultLogger.getInstance();
  
  	@Test
  	public void integrationTest() {
  
  		// build a simple rule
          ComparisonOperator greaterThan = ComparisonOperator.GREATER_THAN;
          greaterThan.setComparisonOperatorService(ComparisonOperatorServiceImpl.getInstance());
          ComparisonOperator lessThan = ComparisonOperator.LESS_THAN;
          lessThan.setComparisonOperatorService(ComparisonOperatorServiceImpl.getInstance());
  
  		Proposition prop1 = new ComparableTermBasedProposition(greaterThan, totalCostTerm, Integer.valueOf(1));
  		Proposition prop2 = new ComparableTermBasedProposition(lessThan, totalCostTerm, Integer.valueOf(1000));
  		CompoundProposition compoundProp1 = new CompoundProposition(LogicalOperator.AND, Arrays.asList(prop1, prop2));
  		
  		Action action1 = new SayHelloAction();
  		Rule rule = new BasicRule("InBetween",compoundProp1, Arrays.asList(action1));
  		
  		BasicAgendaTree agendaTree = new BasicAgendaTree(new BasicAgendaTreeEntry(rule)); 
  		Agenda agenda = new BasicAgenda(Collections.singletonMap(AgendaDefinition.Constants.EVENT, "test"), agendaTree);
  		
  		Map<String, String> contextQualifiers = new HashMap<String, String>();
  		contextQualifiers.put("docTypeName", "Proposal");
  		
  		List<TermResolver<?>> testResolvers = new ArrayList<TermResolver<?>>();
  		testResolvers.add(testResolver);
  		
  		Context context = new BasicContext(Arrays.asList(agenda), testResolvers);
  		ContextProvider contextProvider = new ManualContextProvider(context);
  		
  		SelectionCriteria selectionCriteria = SelectionCriteria.createCriteria(null, contextQualifiers,
                  Collections.singletonMap(AgendaDefinition.Constants.EVENT, "test"));
  		
  		ProviderBasedEngine engine = new ProviderBasedEngine();
  		engine.setContextProvider(contextProvider);
  		
  		// Set execution options to log execution
  		ExecutionOptions executionOptions = new ExecutionOptions().setFlag(ExecutionFlag.LOG_EXECUTION, true);
  		
  		EngineResults results = engine.execute(selectionCriteria, Facts.EMPTY_FACTS, executionOptions);
  		assertNotNull(results);
  		
  	}
 	
 	private static final Term totalCostTerm = new Term("totalCost");
 	
 	private static final TermResolver<Integer> testResolver = new TermResolver<Integer>(){
 		
 		@Override
 		public int getCost() { return 1; }
 		
 		@Override
 		public String getOutput() { return totalCostTerm.getName(); }
 		
 		@Override
 		public Set<String> getPrerequisites() { return Collections.emptySet(); }
 		
 		@Override
 		public Set<String> getParameterNames() {
 			return Collections.emptySet();
 		}
 		
 		@Override
 		public Integer resolve(Map<String, Object> resolvedPrereqs, Map<String, String> parameters) {
 			return 5;
 		}
 	};
 
 }