/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.geometry;

import org.elasticsearch.geo.GeometryTestUtils;
import org.elasticsearch.geometry.utils.GeographyValidator;
import org.elasticsearch.geometry.utils.GeometryValidator;
import org.elasticsearch.geometry.utils.StandardValidator;
import org.elasticsearch.geometry.utils.WellKnownText;

import java.io.IOException;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class MultiLineTests extends BaseGeometryTestCase<MultiLine> {

    @Override
    protected MultiLine createTestInstance(boolean hasAlt) {
        int size = randomIntBetween(1, 10);
        List<Line> arr = new ArrayList<Line>();
        for (int i = 0; i < size; i++) {
            arr.add(GeometryTestUtils.randomLine(hasAlt));
        }
        return new MultiLine(arr);
    }

    public void testBasicSerialization() throws IOException, ParseException {
        GeometryValidator validator = GeographyValidator.instance(true);
        assertEquals(
            "MULTILINESTRING ((3.0 1.0, 4.0 2.0))",
            WellKnownText.toWKT(new MultiLine(Collections.singletonList(new Line(new double[] { 3, 4 }, new double[] { 1, 2 }))))
        );
        assertEquals(
            new MultiLine(Collections.singletonList(new Line(new double[] { 3, 4 }, new double[] { 1, 2 }))),
            WellKnownText.fromWKT(validator, true, "MULTILINESTRING ((3 1, 4 2))")
        );

        assertEquals("MULTILINESTRING EMPTY", WellKnownText.toWKT(MultiLine.EMPTY));
        assertEquals(MultiLine.EMPTY, WellKnownText.fromWKT(validator, true, "MULTILINESTRING EMPTY)"));
    }

    public void testValidation() {
        IllegalArgumentException ex = expectThrows(
            IllegalArgumentException.class,
            () -> StandardValidator.instance(false)
                .validate(
                    new MultiLine(Collections.singletonList(new Line(new double[] { 3, 4 }, new double[] { 1, 2 }, new double[] { 6, 5 })))
                )
        );
        assertEquals("found Z value [6.0] but [ignore_z_value] parameter is [false]", ex.getMessage());

        StandardValidator.instance(true)
            .validate(
                new MultiLine(Collections.singletonList(new Line(new double[] { 3, 4 }, new double[] { 1, 2 }, new double[] { 6, 5 })))
            );
    }

    public void testParseMultiLineZorMWithThreeCoordinates() throws IOException, ParseException {
        GeometryValidator validator = GeographyValidator.instance(true);
        MultiLine expectedZ = new MultiLine(
            List.of(
                new Line(new double[] { 20.0, 30.0 }, new double[] { 10.0, 15.0 }, new double[] { 100.0, 200.0 }),
                new Line(new double[] { 40.0, 50.0 }, new double[] { 20.0, 25.0 }, new double[] { 300.0, 400.0 })
            )
        );
        assertEquals(
            expectedZ,
            WellKnownText.fromWKT(
                validator,
                true,
                "MULTILINESTRING Z ((20.0 10.0 100.0, 30.0 15.0 200.0), (40.0 20.0 300.0, 50.0 25.0 400.0))"
            )
        );

        MultiLine expectedM = new MultiLine(
            List.of(
                new Line(new double[] { 20.0, 30.0 }, new double[] { 10.0, 15.0 }, new double[] { 100.0, 200.0 }),
                new Line(new double[] { 40.0, 50.0 }, new double[] { 20.0, 25.0 }, new double[] { 300.0, 400.0 })
            )
        );
        assertEquals(
            expectedM,
            WellKnownText.fromWKT(
                validator,
                true,
                "MULTILINESTRING M ((20.0 10.0 100.0, 30.0 15.0 200.0), (40.0 20.0 300.0, 50.0 25.0 400.0))"
            )
        );
    }

    public void testParseMultiLineZorMWithTwoCoordinatesThrowsException() {
        GeometryValidator validator = GeographyValidator.instance(true);
        List<String> multiLinesWkt = List.of(
            "MULTILINESTRING Z ((20.0 10.0, 30.0 15.0), (40.0 20.0, 50.0 25.0))",
            "MULTILINESTRING M ((20.0 10.0, 30.0 15.0), (40.0 20.0, 50.0 25.0))"
        );
        for (String multiLine : multiLinesWkt) {
            IllegalArgumentException ex = expectThrows(
                IllegalArgumentException.class,
                () -> WellKnownText.fromWKT(validator, true, multiLine)
            );
            assertEquals(ZorMMustIncludeThreeValuesMsg, ex.getMessage());
        }
    }

    @Override
    protected MultiLine mutateInstance(MultiLine instance) {
        return null;// TODO implement https://github.com/elastic/elasticsearch/issues/25929
    }
}