// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.io;

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

import java.io.FileInputStream;

import org.junit.BeforeClass;
import org.junit.Test;
import org.openstreetmap.josm.JOSMFixture;
import org.openstreetmap.josm.TestUtils;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.Node;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;

/**
 * Unit tests of {@link GeoJSONWriter} class.
 */
public class GeoJSONWriterTest {

    /**
     * Setup test.
     */
    @BeforeClass
    public static void setUp() {
        JOSMFixture.createUnitTestFixture().init();
    }

    /**
     * Unit test
     */
    @Test
    public void testPoint() {
        final Node node = new Node(new LatLon(12.3, 4.56));
        node.put("name", "foo");
        node.put("source", "code");
        final DataSet ds = new DataSet();
        ds.addPrimitive(node);
        final OsmDataLayer layer = new OsmDataLayer(ds, "foo", null);
        final GeoJSONWriter writer = new GeoJSONWriter(layer);
        assertEquals(("" +
                "{\n" +
                "    'type':'FeatureCollection',\n" +
                "    'generator':'JOSM',\n" +
                "    'features':[\n" +
                "        {\n" +
                "            'type':'Feature',\n" +
                "            'properties':{\n" +
                "                'name':'foo',\n" +
                "                'source':'code'\n" +
                "            },\n" +
                "            'geometry':{\n" +
                "                'type':'Point',\n" +
                "                'coordinates':[\n" +
                "                    4.56000000000,\n" +
                "                    12.30000000000\n" +
                "                ]\n" +
                "            }\n" +
                "        }\n" +
                "    ]\n" +
                "}").replace("'", "\""), writer.write().trim());
    }

    /**
     * Unit test for multipolygon
     * @throws Exception if an error occurs
     */
    @Test
    public void testMultipolygon() throws Exception {
        try (FileInputStream in = new FileInputStream(TestUtils.getTestDataRoot() + "multipolygon.osm")) {
            DataSet ds = OsmReader.parseDataSet(in, null);
            final OsmDataLayer layer = new OsmDataLayer(ds, "foo", null);
            final GeoJSONWriter writer = new GeoJSONWriter(layer);
            assertTrue(writer.write().contains("MultiPolygon"));
        }
    }

    /**
     * Unit test for exporting invalid multipolygons, see #13827
     * @throws Exception if an error occurs
     */
    @Test
    public void testMultipolygonRobustness() throws Exception {
        try (FileInputStream in = new FileInputStream("data_nodist/multipolygon.osm")) {
            DataSet ds = OsmReader.parseDataSet(in, null);
            final OsmDataLayer layer = new OsmDataLayer(ds, "foo", null);
            final GeoJSONWriter writer = new GeoJSONWriter(layer);
            assertTrue(writer.write().contains("MultiPolygon"));
        }
    }
}