/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.db.tests.api.story.misc;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.junit.Test;
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.Session;
import org.simantics.db.WriteGraph;
import org.simantics.db.testing.base.ExistingDatabaseTest;
import org.simantics.db.testing.common.WriteQuery;
import org.simantics.layer0.Layer0;

/**
 * 
 * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
 *
 */
public class DataModelTest extends ExistingDatabaseTest {
	
	/**
	 * Creates new instance and then tries to find it.
	 * @throws Exception
	 */
	@Test
	public void testCreateInstance() throws Exception{
		Session session = getSession();
		final Resource rootLib = getSession().getRootLibrary();
        final String newInstanceName = "New Instance " + getRandomString(); 
		
		session.syncRequest(new WriteQuery(this) {
			@Override
			public void run(WriteGraph g) throws Throwable {
				Layer0 b = Layer0.getInstance(g);
				Resource newResource = g.newResource();
				g.claim(newResource, b.InstanceOf, null, b.Type);
				g.claimLiteral(newResource, b.HasName, newInstanceName);
				g.claim(rootLib, b.ConsistsOf, newResource);
//				comment(g, newResource, "DataModelTest.testCreateInstance");
			}
		});
		
		checkException();
		
		session.syncRequest(new WriteQuery(this) {
			@Override
			public void run(WriteGraph g) throws Throwable {
				Layer0 b = Layer0.getInstance(g);
				Collection<Resource> resources = g.getObjects(rootLib, b.ConsistsOf);
				Resource newResource = null;
				for (Resource r : resources) {
				    String value = g.getPossibleRelatedValue(r, b.HasName);
					if (null != value && value.equals(newInstanceName)) {
						newResource = r;
						break;
					}
				}
				if (newResource == null) {
					throw new Exception("Could not find created resource");
				}
				if (!g.isInstanceOf(newResource, b.Type))
					throw new Exception("Created resource is not an instance of Type");
			}
		});
		
		checkException();
		
	}
	
	/**
	 * Creates new type and new instance of it. Then tries to find the instance and the type, and verifies that inheritance is correct. 
	 * @throws Exception
	 */
	@Test
	public void testCreateInstance2() throws Exception{
		Session session = getSession();
		final Resource rootLib = getSession().getRootLibrary();
        final String random = getRandomString();
        final String newTypeName = "New Type " + random; 
        final String newInstanceName = "New Instance " + random; 
		
		session.syncRequest(new WriteQuery(this) {
			@Override
			public void run(WriteGraph g) throws Throwable {
			    Layer0 b = Layer0.getInstance(g);
				Resource newType = g.newResource();
                g.claim(newType, b.InstanceOf, null, b.Type);
                g.claim(newType, b.Inherits, b.SupertypeOf, b.Type);
                g.claimLiteral(newType, b.HasName, newTypeName);
                g.claim(rootLib, b.ConsistsOf, newType);
                Resource newResource = g.newResource();
                g.claim(newResource, b.InstanceOf, null, newType);
                g.claimLiteral(newResource, b.HasName, newInstanceName);
                g.claim(rootLib, b.ConsistsOf, newResource);
				Map<String, String> md = new HashMap<String, String>(); 
				md.put("DataModelTest2", "DataModelTest2");
//				fillMetadata(md);
			}
			
		});
		
		checkException();
		
		session.syncRequest(new TestReadRequest() {
			@Override
			public void run(ReadGraph g) throws Throwable {
				Layer0 b = Layer0.getInstance(g);
				Collection<Resource> resources = g.getObjects(rootLib, b.ConsistsOf);
				Resource newType = null;
				Resource newInstance = null;
				for (Resource r : resources) {
                    String value = g.getPossibleRelatedValue(r, b.HasName);
                    if (null == value)
                    	continue;
                    if (value.equals(newTypeName)) {
						newType = r;
					} else if (value.equals(newInstanceName)) {
						newInstance = r;
					}
				}
				if (newType == null) 
					throw new Exception("Could not find created type");
				if (newInstance == null) 
					throw new Exception("Could not find created instance");
				
				if (!g.isInstanceOf(newInstance, b.Type))
					throw new Exception("Created resource is not an instance of Type");
				if (!g.isInstanceOf(newInstance, newType))
					throw new Exception("Created resource is not an instance of created type");
			}
		});
		
		checkException();
		
	}

}