/**
 * Copyright (c) 2012, 2015 - Lunifera GmbH (Austria), Loetz GmbH&Co.KG and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0 
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *    Florian Pirchner - initial API and implementation
 */
package org.eclipse.osbp.ecview.core.ui.common.tests.editparts.emf.binding;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

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

import org.eclipse.core.databinding.observable.list.IListChangeListener;
import org.eclipse.core.databinding.observable.list.IObservableList;
import org.eclipse.core.databinding.observable.list.ListChangeEvent;
import org.eclipse.osbp.ecview.core.common.context.ViewContext;
import org.eclipse.osbp.ecview.core.common.editpart.DelegatingEditPartManager;
import org.eclipse.osbp.ecview.core.common.editpart.IBeanSlotListBindingEndpointEditpart;
import org.eclipse.osbp.ecview.core.common.editpart.IViewEditpart;
import org.eclipse.osbp.ecview.core.common.editpart.binding.IBindingSetEditpart;
import org.eclipse.osbp.ecview.core.common.editpart.emf.ViewEditpart;
import org.eclipse.osbp.ecview.core.common.model.binding.BindingFactory;
import org.eclipse.osbp.ecview.core.common.model.binding.YBindingSet;
import org.eclipse.osbp.ecview.core.common.model.core.CoreModelFactory;
import org.eclipse.osbp.ecview.core.common.model.core.YBeanSlot;
import org.eclipse.osbp.ecview.core.common.model.core.YBeanSlotListBindingEndpoint;
import org.eclipse.osbp.ecview.core.common.model.core.YView;
import org.eclipse.osbp.ecview.core.common.uri.BeanScope;
import org.eclipse.osbp.ecview.core.common.uri.URIHelper;
import org.eclipse.osbp.runtime.common.dispose.IDisposable;
import org.junit.Before;
import org.junit.Test;

/**
 * Tests the {@link ViewEditpart}.
 */
@SuppressWarnings("restriction")
public class BeanSlotListBindingEndpointEditpartTest {

	private DelegatingEditPartManager editpartManager = DelegatingEditPartManager
			.getInstance();
	private BindingFactory bindingFactory = BindingFactory.eINSTANCE;
	private CoreModelFactory factory = CoreModelFactory.eINSTANCE;

	/**
	 * Setup.
	 */
	@Before
	public void setup() {
		editpartManager.clear();
		editpartManager
				.addDelegate(new org.eclipse.osbp.ecview.core.common.editpart.emf.EditpartManager());
		editpartManager
				.addDelegate(new org.eclipse.osbp.ecview.core.extension.editpart.emf.EditpartManager());

		// initialize default realm
		new DefaultBindingManager.DefaultRealm();
	}

	/**
	 * Tests the getObservable method without a valid view.
	 */
	@Test
	// BEGIN SUPRESS CATCH EXCEPTION
	public void test_getObservable_NPE() {
		// END SUPRESS CATCH EXCEPTION
		YBeanSlotListBindingEndpoint yEndpoint = factory
				.createYBeanSlotListBindingEndpoint();
		yEndpoint.setAttributePath("Huhu");
		yEndpoint.setBeanSlot(factory.createYBeanSlot());
		IBeanSlotListBindingEndpointEditpart editpart = editpartManager
				.getEditpart(new ViewContext(), yEndpoint);

		try {
			editpart.getObservable();
			fail();
		} catch (RuntimeException e) {
			// expected
			assertEquals("null is not a valid super type!", e.getMessage());
		}
	}

	/**
	 * Tests the getObservable method without a valid view.
	 */
	@Test
	// BEGIN SUPRESS CATCH EXCEPTION
	public void test_getObservable_For_ViewContext() {
		// END SUPRESS CATCH EXCEPTION
		YView yView = factory.createYView();
		ViewContext context = new ViewContext();
		IViewEditpart viewEditpart = (IViewEditpart) editpartManager
				.getEditpart(context, yView);

		// add a bean slot
		YBeanSlot yBeanSlot = factory.createYBeanSlot();
		yBeanSlot.setName("myFoo");
		yBeanSlot.setValueType(List.class);
		yView.getBeanSlots().add(yBeanSlot);

		// create the model endpoint and register
		YBeanSlotListBindingEndpoint yEndpoint = factory
				.createYBeanSlotListBindingEndpoint();
		yEndpoint.setBeanSlot(yBeanSlot);
		yEndpoint.setAttributePath("value");
		yEndpoint.setCollectionType(Bean.class);

		IBeanSlotListBindingEndpointEditpart editpart = editpartManager
				.getEditpart(context, yEndpoint);
		IObservableList value = editpart.getObservable();

		final int[] counter = new int[1];
		value.addListChangeListener(new IListChangeListener() {
			@Override
			public void handleListChange(ListChangeEvent event) {
				counter[0] = counter[0] + 1;
			}
		});
		assertEquals(0, counter[0]);

		List<Bean> beans = new ArrayList<Bean>();
		beans.add(new Bean("Test1"));
		beans.add(new Bean("Test2"));

		context.setBean("myFoo", beans);
		assertEquals(1, counter[0]);
	}

	/**
	 * Tests the getObservable method without a valid view.
	 */
	@Test
	// BEGIN SUPRESS CATCH EXCEPTION
	public void test_getNestedObservable_For_ViewContext() {
		// END SUPRESS CATCH EXCEPTION
		YView yView = factory.createYView();
		ViewContext context = new ViewContext();
		IViewEditpart viewEditpart = (IViewEditpart) editpartManager
				.getEditpart(context, yView);

		// add a bean slot
		YBeanSlot yBeanSlot = factory.createYBeanSlot();
		yBeanSlot.setName("myFoo");
		yBeanSlot.setValueType(Bean.class);
		yView.getBeanSlots().add(yBeanSlot);

		// create the model endpoint and register
		YBeanSlotListBindingEndpoint yEndpoint = factory
				.createYBeanSlotListBindingEndpoint();
		yEndpoint.setBeanSlot(yBeanSlot);
		yEndpoint.setAttributePath("value.values");
		yEndpoint.setCollectionType(String.class);

		IBeanSlotListBindingEndpointEditpart editpart = editpartManager
				.getEditpart(context, yEndpoint);
		IObservableList value = editpart.getObservable();

		final int[] counter = new int[1];
		value.addListChangeListener(new IListChangeListener() {
			@Override
			public void handleListChange(ListChangeEvent event) {
				counter[0] = counter[0] + 1;
			}
		});
		assertEquals(0, counter[0]);

		Bean bean = new Bean("Test1");
		bean.values.add("Value1");
		bean.values.add("Value2");

		context.setBean("myFoo", bean);
		assertEquals(1, counter[0]);
	}

	/**
	 * Tests the getObservable method without a valid view.
	 */
	@SuppressWarnings("unchecked")
	@Test
	// BEGIN SUPRESS CATCH EXCEPTION
	public void test_bind() {
		// END SUPRESS CATCH EXCEPTION

		YView yView = factory.createYView();
		ViewContext context = new ViewContext();
		IViewEditpart viewEditpart = (IViewEditpart) editpartManager
				.getEditpart(context, yView);

		context.createBeanSlot("slo1", String.class);
		YBindingSet bs = bindingFactory.createYBindingSet();
		yView.setBindingSet(bs);

		// add a bean slot
		YBeanSlot yBeanSlot1 = factory.createYBeanSlot();
		yBeanSlot1.setName("myFoo");
		yBeanSlot1.setValueType(Bean.class);
		yView.getBeanSlots().add(yBeanSlot1);

		// add a bean slot
		YBeanSlot yBeanSlot2 = factory.createYBeanSlot();
		yBeanSlot2.setName("myBar");
		yBeanSlot2.setValueType(Bean.class);
		yView.getBeanSlots().add(yBeanSlot2);

		// activate the bindingSet editpart
		//
		IBindingSetEditpart bsEditpart = editpartManager.getEditpart(context,
				bs);
		bsEditpart.setBindingManager(new DefaultBindingManager());
		bsEditpart.activate();

		// slot1 endpoint
		//
		YBeanSlotListBindingEndpoint yEndpoint1 = factory
				.createYBeanSlotListBindingEndpoint();
		yEndpoint1.setBeanSlot(yBeanSlot1);
		yEndpoint1.setAttributePath("value.values");

		// slot2 endpoint
		//
		YBeanSlotListBindingEndpoint yEndpoint2 = factory
				.createYBeanSlotListBindingEndpoint();
		yEndpoint2.setBeanSlot(yBeanSlot2);
		yEndpoint2.setAttributePath("value.values");

		bs.addBinding(yEndpoint1, yEndpoint2);

		// write to bean
		BeanScope fooScope = URIHelper
				.toScope("view://bean/myFoo#value.values").getBeanScope();
		BeanScope barScope = URIHelper
				.toScope("view://bean/myBar#value.values").getBeanScope();

		Bean newBean = new Bean(null);
		newBean.getValues().add("hihi");
		newBean.getValues().add("huhu");
		newBean.getValues().add("haha");

		Bean bean2 = new Bean(null);
		context.setBean("myBar", bean2);
		context.setBean("myFoo", newBean);

		int fooSize = ((List<Bean>) fooScope.access(context)).size();
		int barSize = ((List<Bean>) barScope.access(context)).size();
		assertEquals(fooSize, barSize);
		assertEquals(3, barSize);

		newBean = new Bean(null);
		newBean.getValues().add("hihi");
		newBean.getValues().add("huhu");

		context.setBean("myBar", newBean);
		fooSize = ((List<Bean>) fooScope.access(context)).size();
		barSize = ((List<Bean>) barScope.access(context)).size();
		assertEquals(fooSize, barSize);
		assertEquals(2, barSize);
	}

	/**
	 * Tests the disposal.
	 */
	@Test
	// BEGIN SUPRESS CATCH EXCEPTION
	public void test_dispose() {
		// END SUPRESS CATCH EXCEPTION

		YBeanSlotListBindingEndpoint yEndpoint = factory
				.createYBeanSlotListBindingEndpoint();
		IBeanSlotListBindingEndpointEditpart editpart = editpartManager
				.getEditpart(new ViewContext(), yEndpoint);

		assertFalse(editpart.isDisposed());
		editpart.dispose();
		assertTrue(editpart.isDisposed());

		// call twice
		editpart.isDisposed();
		editpart.dispose();

		try {
			editpart.addDisposeListener(new IDisposable.Listener() {
				@Override
				public void notifyDisposed(IDisposable notifier) {
				}
			});
			fail();
			// BEGIN SUPRESS CATCH EXCEPTION
		} catch (Exception e) {
			// END SUPRESS CATCH EXCEPTION
			// expected
		}

		try {
			editpart.getObservable();
			fail();
			// BEGIN SUPRESS CATCH EXCEPTION
		} catch (Exception e) {
			// END SUPRESS CATCH EXCEPTION
			// expected
		}
		try {
			editpart.getModel();
			fail();
			// BEGIN SUPRESS CATCH EXCEPTION
		} catch (Exception e) {
			// END SUPRESS CATCH EXCEPTION
			// expected
		}
		try {
			editpart.getId();
			fail();
			// BEGIN SUPRESS CATCH EXCEPTION
		} catch (Exception e) {
			// END SUPRESS CATCH EXCEPTION
			// expected
		}

		try {
			editpart.getModel();
			fail();
			// BEGIN SUPRESS CATCH EXCEPTION
		} catch (Exception e) {
			// END SUPRESS CATCH EXCEPTION
			// expected
		}

		try {
			editpart.removeDisposeListener(new IDisposable.Listener() {
				@Override
				public void notifyDisposed(IDisposable notifier) {
				}
			});
			fail();
			// BEGIN SUPRESS CATCH EXCEPTION
		} catch (Exception e) {
			// END SUPRESS CATCH EXCEPTION
			// expected
		}
	}

	public class Bean extends AbstractBean {

		private String value;
		private List<String> values = new ArrayList<String>();

		public Bean(String value) {
			super();
			this.value = value;
		}

		/**
		 * @return the value
		 */
		public String getValue() {
			return value;
		}

		/**
		 * @param value
		 *            the value to set
		 */
		public void setValue(String value) {
			firePropertyChanged("value", this.value, this.value = value);
		}

		public List<String> getValues() {
			return values;
		}

		public void setValues(List<String> values) {
			this.values = values;
		}

	}
}