/*
 * Licensed to STRATIO (C) under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership.  The STRATIO (C) licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   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 com.stratio.cassandra.lucene.search.condition;

import com.spatial4j.core.context.jts.JtsSpatialContext;
import com.spatial4j.core.shape.jts.JtsGeometry;
import com.stratio.cassandra.lucene.common.GeoTransformation;
import com.stratio.cassandra.lucene.schema.mapping.GeoShapeMapper;
import com.stratio.cassandra.lucene.util.GeospatialUtilsJTS;
import com.stratio.cassandra.lucene.util.JsonSerializer;
import org.junit.Test;

import java.io.IOException;

import static com.stratio.cassandra.lucene.common.GeoTransformation.Centroid;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotNull;

/**
 * Unit tests for {@link GeoTransformation.Centroid}.
 *
 * @author Andres de la Pena {@literal <adelapena@stratio.com>}
 */
public class GeoTransformationCentroidTest extends AbstractConditionTest {

    private static final JtsSpatialContext CONTEXT = GeoShapeMapper.SPATIAL_CONTEXT;

    private static JtsGeometry geometry(String string) {
        return GeospatialUtilsJTS.geometryFromWKT(CONTEXT, string);
    }

    @Test
    public void testCentroidTransformationPoint() {

        String shape = "POINT (-30.1 50.2)";
        String centroid = "POINT (-30.1 50.2)";

        GeoTransformation transformation = new GeoTransformation.Centroid();
        JtsGeometry geometry = geometry(shape);
        JtsGeometry transformedGeometry = transformation.apply(geometry, GeoShapeCondition.CONTEXT);

        assertEquals("Failed applied centroid transformation to point", centroid, transformedGeometry.toString());
    }

    @Test
    public void testCentroidTransformationLine() {

        String shape = "LINESTRING (0 -30, 0 50)";
        String centroid = "POINT (0 10)";

        GeoTransformation transformation = new GeoTransformation.Centroid();
        JtsGeometry geometry = geometry(shape);
        JtsGeometry transformedGeometry = transformation.apply(geometry, GeoShapeCondition.CONTEXT);

        assertEquals("Failed applied centroid transformation to line", centroid, transformedGeometry.toString());
    }

    @Test
    public void testCentroidTransformationPolygon() {

        String shape = "POLYGON ((-30 30, -30 0, 30 0, 30 30, -30 30))";
        String centroid = "POINT (-0 15)";

        GeoTransformation transformation = new GeoTransformation.Centroid();
        JtsGeometry geometry = geometry(shape);
        JtsGeometry transformedGeometry = transformation.apply(geometry, GeoShapeCondition.CONTEXT);

        assertEquals("Failed applied centroid transformation to polygon", centroid, transformedGeometry.toString());
    }

    @Test
    public void testCentroidTransformationMultiPolygon() {

        String shape = "MULTIPOLYGON (((30 20, 45 40, 10 40, 30 20)),((15 5, 40 10, 10 20, 5 10, 15 5)))";
        String centroid = "POINT (24.285714285714285 24.047619047619047)";

        GeoTransformation transformation = new GeoTransformation.Centroid();
        JtsGeometry geometry = geometry(shape);
        JtsGeometry transformedGeometry = transformation.apply(geometry, GeoShapeCondition.CONTEXT);

        assertEquals("Failed applied centroid transformation to multipart", centroid, transformedGeometry.toString());
    }

    @Test
    public void testCentroidTransformationToString() {
        GeoTransformation transformation = new GeoTransformation.Centroid();
        assertEquals("Centroid{}", transformation.toString());
    }

    @Test
    public void testCentroidTransformationParsing() throws IOException {
        String json = "{type:\"centroid\"}";
        Centroid centroid = JsonSerializer.fromString(json, Centroid.class);
        assertNotNull("JSON serialization is wrong", centroid);
    }

}