/*
 * 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.compiler.factmodel.traits;

import org.drools.core.common.ProjectClassLoader;
import org.drools.core.factmodel.traits.CoreWrapper;
import org.drools.core.factmodel.traits.Entity;
import org.drools.core.factmodel.traits.LogicalTypeInconsistencyException;
import org.drools.core.factmodel.traits.Thing;
import org.drools.core.factmodel.traits.Trait;
import org.drools.core.factmodel.traits.TraitableBean;
import org.drools.core.util.StandaloneTraitFactory;
import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

public class StandaloneTest {

    private StandaloneTraitFactory factory;

    @Before
    public void init() {
        ProjectClassLoader loader = ProjectClassLoader.createProjectClassLoader();
        factory = new StandaloneTraitFactory( loader );
    }

    @Test
    public void testThing() throws LogicalTypeInconsistencyException {
        // Entity is @Traitable and implements TraitableBean natively
        // Thing is a Trait
        // --> just call getProxy
        Entity core = new Entity( "x" );
        Thing thing = factory.don( core, Thing.class );
        assertNotNull( thing );
    }


    @Test
    public void testHierarchy() throws LogicalTypeInconsistencyException {
        Imp imp = new Imp();
        imp.setName( "john doe" );

        // Imp is not a TraitableBean, so we need to wrap it first
        // IStudent is a Thing, so it will work directly
        CoreWrapper<Imp> core = factory.makeTraitable( imp, Imp.class );
        IStudent student = (IStudent) factory.don( core, IStudent.class );

        System.out.println( student.getName() );
        System.out.println( student.getSchool() );
        assertEquals( "john doe", student.getName() );
        assertNull( student.getSchool() );

        IPerson p = (IPerson) factory.don( core, IPerson.class );

        student.setName( "alan ford" );

        System.out.println( p.getName() );
        assertEquals( "alan ford", p.getName() );
    }


    @Trait
    public static interface IFoo {
        public String getName();
        public void setName( String n );
    }

    @Test
    public void testLegacy() throws LogicalTypeInconsistencyException {
        Imp imp = new Imp();
        imp.setName( "john doe" );

        // Imp is not a TraitableBean, so we need to wrap it first
        // IFoo is not a Thing, but it will be extended internally
        CoreWrapper<Imp> core = factory.makeTraitable( imp, Imp.class );
        IFoo foo = (IFoo) factory.don( core, IFoo.class );

        System.out.println( foo.getName() );
        System.out.println( foo instanceof Thing );

        assertEquals( "john doe", foo.getName() );
        assertTrue( foo instanceof Thing );
    }




}