/*-
 *  Copyright 2020 Beuth Hochschule für Technik Berlin, Hochschule für Technik Stuttgart
 * 
 *  This file is part of CityDoctor2.
 *
 *  CityDoctor2 is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  CityDoctor2 is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with CityDoctor2.  If not, see <https://www.gnu.org/licenses/>.
 */
package de.hft.stuttgart.citydoctor2.datastructure;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

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

import org.citygml4j.factory.GMLGeometryFactory;
import org.citygml4j.model.citygml.building.AbstractBoundarySurface;
import org.citygml4j.model.citygml.building.WallSurface;
import org.junit.Test;

import de.hft.stuttgart.citydoctor2.check.Check;
import de.hft.stuttgart.citydoctor2.check.CheckError;
import de.hft.stuttgart.citydoctor2.check.CheckId;
import de.hft.stuttgart.citydoctor2.check.CheckResult;
import de.hft.stuttgart.citydoctor2.check.ResultStatus;
import de.hft.stuttgart.citydoctor2.datastructure.LinearRing.LinearRingType;
import de.hft.stuttgart.citydoctor2.math.Vector3d;
import de.hft.stuttgart.citydoctor2.parser.ParserConfiguration;

/**
 * 
 * @author Matthias Betz
 *
 */
public class GeometryTest {

	@Test
	public void testCreate() {
		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD0);

		assertNotNull(geom);
		assertSame(GeometryType.SOLID, geom.getType());
		assertSame(Lod.LOD0, geom.getLod());
	}

	@Test
	public void testAddPolygon() {
		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD0);

		Polygon p = new ConcretePolygon();
		geom.addPolygon(p);

		assertEquals(1, geom.getPolygons().size());
		assertSame(geom, p.getParent());
		assertSame(geom.getPolygons().get(0), p);
	}

	@Test
	public void testRemovePolygon() {
		ParserConfiguration config = new ParserConfiguration(4, false);
		AbstractBoundarySurface abs = new WallSurface();
		BoundarySurface bs = new BoundarySurface(SurfaceFeatureType.BUILDING, BoundarySurfaceType.WALL, abs);
		org.citygml4j.model.citygml.building.BuildingInstallation gmlBi = new org.citygml4j.model.citygml.building.BuildingInstallation();
		BuildingInstallation bi = new BuildingInstallation();
		bi.setGmlObject(gmlBi);
		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD2);

		Polygon p = new ConcretePolygon();
		LinearRing lr = new LinearRing(LinearRingType.EXTERIOR);
		p.setExteriorRing(lr);
		lr.addVertex(new Vertex(0, 0, 0));

		geom.addPolygon(p);
		p.setPartOfSurface(bs);
		p.setPartOfInstallation(bi);

		geom.removePolygon(p);

		assertEquals(0, geom.getPolygons().size());

		bs.reCreateGeometries(new GMLGeometryFactory(), config);
		assertNull(abs.getLod2MultiSurface());

		bi.reCreateGeometries(new GMLGeometryFactory(), config);
		assertNull(gmlBi.getLod2Geometry());
	}

	@Test
	public void testReplacePolygon() {
		ParserConfiguration config = new ParserConfiguration(4, false);
		AbstractBoundarySurface abs = new WallSurface();
		BoundarySurface bs = new BoundarySurface(SurfaceFeatureType.BUILDING, BoundarySurfaceType.WALL, abs);
		org.citygml4j.model.citygml.building.BuildingInstallation gmlBi = new org.citygml4j.model.citygml.building.BuildingInstallation();
		BuildingInstallation bi = new BuildingInstallation();
		bi.setGmlObject(gmlBi);
		bi.addBoundarySurface(bs);
		Geometry geom2 = new Geometry(GeometryType.MULTI_SURFACE, Lod.LOD2);
		ConcretePolygon p = new ConcretePolygon();
		geom2.addPolygon(p);
		LinearRing lr = new LinearRing(LinearRingType.EXTERIOR);
		p.setExteriorRing(lr);
		lr.addVertex(new Vertex(0, 0, 0));
		p.setPartOfSurface(bs);
		p.setPartOfInstallation(bi);
		bs.addGeometry(geom2);

		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD2);
		Polygon linkedPoly = new LinkedPolygon(p, geom);
		geom.addPolygon(linkedPoly);

		ConcretePolygon p2 = new ConcretePolygon();
		p2.setExteriorRing(lr);

		ConcretePolygon p3 = new ConcretePolygon();
		p3.setExteriorRing(lr);

		geom.replacePolygon(linkedPoly, p2, p3);

		assertEquals(2, geom.getPolygons().size());
		assertEquals(2, geom2.getPolygons().size());

		bi.reCreateGeometries(new GMLGeometryFactory(), config);
		assertNull(gmlBi.getLod2Geometry());
		assertNull(gmlBi.getLod3Geometry());
		assertNull(gmlBi.getLod4Geometry());

		bs.reCreateGeometries(new GMLGeometryFactory(), config);
		assertNotNull(abs.getLod2MultiSurface());
		assertNotNull(abs.getLod2MultiSurface().getMultiSurface());
		assertNotNull(abs.getLod2MultiSurface().getMultiSurface().getSurfaceMember());
		assertFalse(abs.getLod2MultiSurface().getMultiSurface().getSurfaceMember().isEmpty());
		assertEquals(2, abs.getLod2MultiSurface().getMultiSurface().getSurfaceMember().size());
		assertNull(gmlBi.getLod2Geometry());
	}

	@Test
	public void testSetParent() {
		Geometry geom = new Geometry(GeometryType.MULTI_SURFACE, Lod.LOD2);
		CityObject co = mock(CityObject.class);
		geom.setParent(co);
		assertEquals(co, geom.getParent());
	}

	@Test
	public void testUpdateEdges() {
		Geometry geom = GeometryTestUtils.createDummyGeometryWithInnerRingWithNeighboringPolygon(GeometryType.SOLID,
				Lod.LOD2);
		geom.clearMetaInformation();
		assertNull(geom.getEdges());
		geom.updateEdges();
		List<Edge> edges = geom.getEdges();
		assertNotNull(edges);
		assertFalse(edges.isEmpty());
		assertEquals(10, edges.size());
	}

	@Test
	public void testSetType() {
		Geometry geom = new Geometry(GeometryType.MULTI_SURFACE, Lod.LOD2);
		geom.setType(GeometryType.SOLID);
		assertEquals(GeometryType.SOLID, geom.getType());
	}

	@Test
	public void testGetCenter() {
		Geometry geom = GeometryTestUtils.createDummyGeometry(GeometryType.SOLID);
		Vector3d center = geom.getCenter();
		assertEquals(427583.3025, center.getX(), 0.000001);
		assertEquals(6003502.5725, center.getY(), 0.000001);
		assertEquals(6.905, center.getZ(), 0.000001);
	}

	@Test
	public void testContainsError() {
		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD1);
		assertFalse(geom.containsError(CheckId.C_GE_P_HOLE_OUTSIDE));
		geom.addCheckResult(
				new CheckResult(CheckId.C_GE_P_HOLE_OUTSIDE, ResultStatus.ERROR, mock(CheckError.class)));
		assertTrue(geom.containsError(CheckId.C_GE_P_HOLE_OUTSIDE));
		ConcretePolygon p = new ConcretePolygon();
		p.setExteriorRing(mock(LinearRing.class));
		geom.addPolygon(p);
		assertFalse(geom.containsError(CheckId.C_GE_P_INNER_RINGS_NESTED));
		p.addCheckResult(
				new CheckResult(CheckId.C_GE_P_INNER_RINGS_NESTED, ResultStatus.ERROR, mock(CheckError.class)));
		assertTrue(geom.containsError(CheckId.C_GE_P_INNER_RINGS_NESTED));
	}
	
	@Test
	public void testClearAllContainedCheckResults() {
		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD1);
		assertFalse(geom.containsError(CheckId.C_GE_P_HOLE_OUTSIDE));
		geom.addCheckResult(
				new CheckResult(CheckId.C_GE_P_HOLE_OUTSIDE, ResultStatus.ERROR, mock(CheckError.class)));
		assertTrue(geom.containsError(CheckId.C_GE_P_HOLE_OUTSIDE));
		Polygon p = mock(Polygon.class);
		geom.addPolygon(p);
		geom.clearAllContainedCheckResults();
		verify(p).clearAllContainedCheckResults();
		assertFalse(geom.containsError(CheckId.C_GE_P_HOLE_OUTSIDE));
	}
	
	@Test
	public void testCollectContainedErrors() {
		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD1);
		assertFalse(geom.containsError(CheckId.C_GE_P_HOLE_OUTSIDE));
		geom.addCheckResult(
				new CheckResult(CheckId.C_GE_P_HOLE_OUTSIDE, ResultStatus.ERROR, mock(CheckError.class)));
		assertTrue(geom.containsError(CheckId.C_GE_P_HOLE_OUTSIDE));
		Polygon p = mock(Polygon.class);
		geom.addPolygon(p);
		List<CheckError> errors = new ArrayList<>();
		geom.collectContainedErrors(errors);
		verify(p).collectContainedErrors(errors);
		assertEquals(1, errors.size());
	}
	
	@Test
	public void testContainsAnyError() {
		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD1);
		assertFalse(geom.containsAnyError());
		geom.addCheckResult(
				new CheckResult(CheckId.C_GE_P_HOLE_OUTSIDE, ResultStatus.ERROR, mock(CheckError.class)));
		assertTrue(geom.containsAnyError());
		Polygon p = mock(Polygon.class);
		geom.addPolygon(p);
		geom.clearAllContainedCheckResults();
		assertFalse(geom.containsAnyError());
		verify(p).containsAnyError();
		when(p.containsAnyError()).thenReturn(true);
		assertTrue(geom.containsAnyError());
	}
	
	@Test
	public void testAccept() {
		Geometry geom = new Geometry(GeometryType.SOLID, Lod.LOD1);
		Check c = mock(Check.class);
		geom.accept(c);
		when(c.canExecute(geom)).thenReturn(true);
		geom.accept(c);
		verify(c).check(geom);
		Polygon p = mock(Polygon.class);
		geom.addPolygon(p);
		geom.accept(c);
		verify(p).accept(c);
	}
	
	@Test
	public void testGetVertices() {
		Geometry geom = GeometryTestUtils.createDummyGeometry(GeometryType.SOLID);
		List<Vertex> vertices = geom.getVertices();
		assertEquals(4, vertices.size());
	}
	
	@Test
	public void testGetEdgesAdjacentToVertex() {
		Geometry geom = GeometryTestUtils.createDummyGeometryWithInnerRingWithNeighboringPolygon(GeometryType.SOLID, Lod.LOD1);
		Polygon polygon = geom.getPolygons().get(1);
		Vertex vertex = polygon.getExteriorRing().getVertices().get(0);
		List<Edge> edges = geom.getEdgesAdjacentTo(vertex);
		assertEquals(2, edges.size());
	}
	

}