/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * 
 *      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.drools.decisiontable;

import org.junit.Test;
import org.kie.api.io.ResourceType;
import org.kie.internal.KnowledgeBase;
import org.kie.internal.KnowledgeBaseFactory;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.io.ResourceFactory;
import org.kie.internal.runtime.StatefulKnowledgeSession;

import java.util.ArrayList;
import java.util.List;

import static org.junit.Assert.*;

public class ChangeSetTest {
    
    @Test
    public void testIntegration() {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add( ResourceFactory.newClassPathResource( "changeset1Test.xml", getClass()), ResourceType.CHANGE_SET );
        assertFalse( kbuilder.hasErrors() );
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
        List list = new ArrayList();
        ksession.setGlobal( "list", list );
        
        ksession.insert( new Cheese( "cheddar",
                                    42 ) );
        ksession.insert( new Person( "michael",
                                    "stilton",
                                    25 ) );
        
        ksession.fireAllRules();
        ksession.dispose();
        
        assertEquals( 3, list.size() );
  
        assertEquals( "Young man cheddar",
                      list.get( 0 ) );
        
        assertEquals( "rule1",
                      list.get( 1 ) );
        assertEquals( "rule2",
                      list.get( 2 ) );
    }

    @Test
    public void multipleSheets() {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add( ResourceFactory.newClassPathResource( "multipleSheetsChangeSet.xml", getClass()), ResourceType.CHANGE_SET );
        assertFalse( kbuilder.hasErrors() );
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
        List list = new ArrayList();
        ksession.setGlobal( "list", list );

        ksession.insert( new Cheese( "cheddar",
                                    42 ) );
        ksession.insert( new Person( "michael",
                                    "stilton",
                                    25 ) );
        ksession.insert( new Person( "Jane",
                                    "stilton",
                                    55 ) );

        ksession.fireAllRules();
        ksession.dispose();

        assertEquals( 2, list.size() );

        assertTrue(list.contains("Young man cheddar"));
        assertTrue(list.contains("Jane eats cheddar"));
    }

    @Test
    public void testCSV() {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add( ResourceFactory.newClassPathResource( "changeSetTestCSV.xml", getClass()), ResourceType.CHANGE_SET );
        assertFalse( kbuilder.hasErrors() );
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        assertEquals(1, kbase.getKnowledgePackages().size());
        assertEquals(3, kbase.getKnowledgePackages().iterator().next().getRules().size());
    }
}