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

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.Test;
import org.openstreetmap.josm.data.coor.LatLon;

class RelationTest {
    @Test
    void testCreateNewRelation() {
        assertThrows(NullPointerException.class, () -> new Relation(null));
    }

    @Test
    void testEqualSemanticsToNull() {
        Relation relation = new Relation();
        assertFalse(relation.hasEqualTechnicalAttributes(null));
    }

    @Test
    void testBbox() {
        DataSet ds = new DataSet();

        Node n1 = new Node(new LatLon(10, 10));
        Node n2 = new Node(new LatLon(20, 20));
        Node n3 = new Node(new LatLon(30, 30));
        Way w1 = new Way();
        w1.addNode(n1);
        w1.addNode(n2);
        Relation r1 = new Relation();
        Relation r2 = new Relation();
        ds.addPrimitive(r1);
        ds.addPrimitive(r2);
        ds.addPrimitive(n1);
        ds.addPrimitive(n2);
        ds.addPrimitive(n3);
        ds.addPrimitive(w1);
        r1.addMember(new RelationMember("", n1));
        r1.addMember(new RelationMember("", w1));
        r1.addMember(new RelationMember("", r1));
        r1.addMember(new RelationMember("", r2));
        r2.addMember(new RelationMember("", r1));
        r2.addMember(new RelationMember("", n3));

        BBox bbox = new BBox(w1);
        bbox.add(n3.getBBox());
        assertEquals(bbox, r1.getBBox());
        assertEquals(bbox, r2.getBBox());

        n3.setCoor(new LatLon(40, 40));
        bbox.add(n3.getBBox());
        assertEquals(bbox, r1.getBBox());
        assertEquals(bbox, r2.getBBox());

        r1.removeMembersFor(r2);
        assertEquals(w1.getBBox(), r1.getBBox());
        assertEquals(bbox, r2.getBBox());

        w1.addNode(n3);
        assertEquals(w1.getBBox(), r1.getBBox());
        assertEquals(w1.getBBox(), r2.getBBox());

        // create incomplete node and add it to the relation, this must not change the bbox
        BBox oldBBox = r2.getBBox();
        Node n4 = new Node();
        n4.setIncomplete(true);
        ds.addPrimitive(n4);
        r2.addMember(new RelationMember("", n4));

        assertEquals(oldBBox, r2.getBBox());
    }

    @Test
    void testBBoxNotInDataset() {
        Node n1 = new Node(new LatLon(10, 10));
        Node n2 = new Node(new LatLon(20, 20));
        Way w1 = new Way();
        w1.addNode(n1);
        w1.addNode(n2);
        Relation r1 = new Relation();
        r1.getBBox();
        r1.addMember(new RelationMember("", w1));

        assertEquals(new BBox(w1), r1.getBBox());

        DataSet ds = new DataSet();
        ds.addPrimitive(n1);
        ds.addPrimitive(n2);
        ds.addPrimitive(w1);
        ds.addPrimitive(r1);

        assertEquals(new BBox(w1), r1.getBBox());

        ds.removePrimitive(r1);

        n1.setCoor(new LatLon(30, 40));
        assertEquals(new BBox(w1), r1.getBBox());

        ds.addPrimitive(r1);
        assertEquals(new BBox(w1), r1.getBBox());
    }

    /**
     * Non-regression test for <a href="https://josm.openstreetmap.de/ticket/12467">Bug #12467</a>.
     */
    @Test
    void testTicket12467() {
        Relation r = new Relation();
        r.put("type", "boundary");
        assertTrue(r.isBoundary());
        assertTrue(r.isMultipolygon());
        assertEquals(OsmPrimitiveType.RELATION, r.getDisplayType());

        r.put("type", "multipolygon");
        assertFalse(r.isBoundary());
        assertTrue(r.isMultipolygon());
        assertEquals(OsmPrimitiveType.MULTIPOLYGON, r.getDisplayType());

        r.put("type", "something_else");
        assertFalse(r.isBoundary());
        assertFalse(r.isMultipolygon());
        assertEquals(OsmPrimitiveType.RELATION, r.getDisplayType());
    }

    /**
     * Test that {@link Relation#cloneFrom} throws IAE for invalid arguments
     */
    @Test
    void testCloneFromIAE() {
        final Relation relation = new Relation();
        final Node node = new Node();
        assertThrows(IllegalArgumentException.class, () -> relation.cloneFrom(node));
    }

    /**
     * Test that {@link Relation#load} throws IAE for invalid arguments
     */
    @Test
    void testLoadIAE() {
        final Relation relation = new Relation();
        final NodeData nodeData = new NodeData();
        assertThrows(IllegalArgumentException.class, () -> relation.load(nodeData));
    }
}