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

import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.util.ArrayList;
import java.util.Collections;

import org.openstreetmap.josm.TestUtils;
import org.openstreetmap.josm.command.CommandTest.CommandTestDataWithRelation;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.User;
import org.openstreetmap.josm.data.osm.Way;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;
import org.openstreetmap.josm.gui.mappaint.ElemStyles;
import org.openstreetmap.josm.testutils.annotations.BasicPreferences;

import nl.jqno.equalsverifier.EqualsVerifier;
import nl.jqno.equalsverifier.Warning;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

/**
 * Unit tests of {@link RemoveNodesCommand} class.
 */
// We need prefs for nodes.
@BasicPreferences
class RemoveNodesCommandTest {
    private CommandTestDataWithRelation testData;

    /**
     * Set up the test data.
     */
    @BeforeEach
    public void createTestData() {
        testData = new CommandTestDataWithRelation();
    }

    /**
     * Test {@link RemoveNodesCommand#executeCommand()}
     */
    @Test
    void testExecute() {
        RemoveNodesCommand command = new RemoveNodesCommand(testData.existingWay,
                Collections.singleton(testData.existingNode));

        command.executeCommand();

        assertFalse(testData.existingWay.containsNode(testData.existingNode));
        assertTrue(testData.existingWay.containsNode(testData.existingNode2));
        assertTrue(testData.existingWay.isModified());
    }

    /**
     * Test {@link RemoveNodesCommand#undoCommand()}
     */
    @Test
    void testUndo() {
        RemoveNodesCommand command = new RemoveNodesCommand(testData.existingWay,
                Collections.singleton(testData.existingNode));

        command.executeCommand();

        command.undoCommand();
        assertTrue(testData.existingWay.containsNode(testData.existingNode));
        assertTrue(testData.existingWay.containsNode(testData.existingNode2));
        assertFalse(testData.existingWay.isModified());

        command.executeCommand();

        assertFalse(testData.existingWay.containsNode(testData.existingNode));
        assertTrue(testData.existingWay.containsNode(testData.existingNode2));
        assertTrue(testData.existingWay.isModified());
    }

    /**
     * Tests {@link RemoveNodesCommand#fillModifiedData(java.util.Collection, java.util.Collection, java.util.Collection)}
     */
    @Test
    void testFillModifiedData() {
        ArrayList<OsmPrimitive> modified = new ArrayList<>();
        ArrayList<OsmPrimitive> deleted = new ArrayList<>();
        ArrayList<OsmPrimitive> added = new ArrayList<>();
        RemoveNodesCommand command = new RemoveNodesCommand(testData.existingWay,
                Collections.singleton(testData.existingNode));
        command.fillModifiedData(modified, deleted, added);
        assertArrayEquals(new Object[] {testData.existingWay }, modified.toArray());
        assertArrayEquals(new Object[] {}, deleted.toArray());
        assertArrayEquals(new Object[] {}, added.toArray());
    }

    /**
     * Tests {@link RemoveNodesCommand#getParticipatingPrimitives()}
     */
    @Test
    void testGetParticipatingPrimitives() {
        RemoveNodesCommand command = new RemoveNodesCommand(testData.existingWay,
                Collections.singleton(testData.existingNode));
        command.executeCommand();
        assertArrayEquals(new Object[] {testData.existingWay }, command.getParticipatingPrimitives().toArray());
    }

    /**
     * Test {@link RemoveNodesCommand#getDescriptionText()}
     */
    @Test
    void testDescription() {
        assertTrue(new RemoveNodesCommand(testData.existingWay, Collections.singleton(testData.existingNode))
                .getDescriptionText().matches("Removed nodes from .*"));
    }

    /**
     * Unit test of methods {@link RemoveNodesCommand#equals} and {@link RemoveNodesCommand#hashCode}.
     */
    @Test
    void testEqualsContract() {
        TestUtils.assumeWorkingEqualsVerifier();
        EqualsVerifier.forClass(RemoveNodesCommand.class).usingGetClass()
            .withPrefabValues(Way.class,
                new Way(1), new Way(2))
            .withPrefabValues(DataSet.class,
                    new DataSet(), new DataSet())
            .withPrefabValues(User.class,
                    User.createOsmUser(1, "foo"), User.createOsmUser(2, "bar"))
            .withPrefabValues(OsmDataLayer.class,
                    new OsmDataLayer(new DataSet(), "1", null), new OsmDataLayer(new DataSet(), "2", null))
            .withPrefabValues(ElemStyles.class,
                    new ElemStyles(), new ElemStyles())
            .suppress(Warning.NONFINAL_FIELDS)
            .verify();
    }
}