/*
 * Licensed 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 org.gbif.api.model.predicate;

import java.io.File;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;

import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertThrows;

public class WithinPredicateTest {

  // API no longer throws an exception here.
  public void testEmptyConstructor() {
    new WithinPredicate("");
  }

  @Test
  public void testNullConstructor() {
    assertThrows(NullPointerException.class, () -> new WithinPredicate(null));
  }

  // API no longer throws an exception here.
  public void testBadConstructor1() {
    new WithinPredicate("POLYGON");
  }

  @Test
  public void testGoodConstructor() {
    new WithinPredicate("POLYGON ((30 10, 10 20, 20 40, 40 40, 30 10))");
  }

  // API no longer throws an exception here.
  public void testBadRectangle() {
    new WithinPredicate("POLYGON ((30 10, 100 100, 20 40, 40 40, 30 10))");
  }

  @Test
  public void testGoodComplexConstructor() throws Exception {
    Path path = new File(ClassLoader.getSystemResource("predicate/large-polygon.wkt").getFile()).toPath();
    byte[] enc = Files.readAllBytes(path);
    new WithinPredicate(new String(enc, StandardCharsets.UTF_8));
  }

  @Test
  public void testPolygonWithHole() {
    new WithinPredicate("POLYGON ((35 10, 45 45, 15 40, 10 20, 35 10), (20 30, 35 35, 30 20, 20 30))");
  }

  @Test
  public void testGoodPolygonOverAntimeridian() {
    // A rectangle over the Bering sea
    new WithinPredicate("POLYGON((-206.71875 39.20502,-133.59375 39.20502,-133.59375 77.26611,-206.71875 77.26611,-206.71875 39.20502))");

    // A polygon around Taveuni, Fiji, as portal16 produces it:
    new WithinPredicate("POLYGON((-180.14832 -16.72643,-180.21423 -16.82899,-180.12085 -17.12058,-179.89838 -17.12845,-179.75006 -16.86054,-179.8764 -16.60277,-180.14832 -16.72643))");
    // Same place, but as Wicket draws it:
    new WithinPredicate("POLYGON(( 179.85168 -16.72643, 179.78577 -16.82899, 179.87915 -17.12058,-179.89838 -17.12845,-179.75006 -16.86054,-179.8764 -16.60277, 179.85168 -16.72643))");
    // Same, but as a MultiPolygon split over the antimeridian
    new WithinPredicate("MULTIPOLYGON (((180 -16.81285, 180 -16.98076, 179.99 -16.99, 179.9 -17.01, 179.88 -16.95, 180 -16.81285))," +
      "((-180 -16.98076, -180 -16.81285, -179.98 -16.79, -179.88 -16.68, -179.81 -16.78, -179.88 -16.87, -180 -16.98076)))");

    // Iceland (the island) from OpenStreetMap, converted and simplified using ogr2ogr
    new WithinPredicate("POLYGON ((-21.4671921 65.441761,-21.3157028 65.9990267,-22.46732 66.4657148,-23.196803 66.3490242,-22.362113 66.2703732,-22.9758561 66.228119,-22.3831844 66.0933255,-22.424131 65.8374539,-23.4703372 66.1972321,-23.2565264 65.6767322,-24.5319933 65.5027259,-21.684764 65.4547893,-24.0482947 64.8794291,-21.3551366 64.3842337,-22.7053151 63.8001572,-19.1269971 63.3980322,-13.4948065 65.076438,-15.1872897 66.1073781,-14.5302343 66.3783121,-16.0235596 66.5371808,-21.4671921 65.441761))");
  }

  @Test
  public void testDoubleHolePolygon() {
    // org.codehaus.jackson.map.JsonMappingException: Instantiation of [simple type, class org.gbif.api.model.occurrence.predicate.WithinPredicate] value failed: org.locationtech.spatial4j.exception.InvalidShapeException (through reference chain: org.gbif.api.model.occurrence.predicate.WithinPredicate["geometry"])
    new WithinPredicate("MULTIPOLYGON (((7.3316813 48.0563494,7.3228514 48.060052,7.3261277 48.0643411,7.3154803 48.0701735,7.3259359 48.0862557,7.3214871 48.0888072,7.3043858 48.0890742,7.3061047 48.0732654,7.2651668 48.0785946,7.2338755 48.0662021,7.1984405 48.0792295,7.1935418 48.0881433,7.2516593 48.1085801,7.2820136 48.1035337,7.2846343 48.1004992,7.2777031 48.0953582,7.2881932 48.0947832,7.2878348 48.1006099,7.2918776 48.0994659,7.2921114 48.099821,7.291151 48.1056706,7.304138 48.1063434,7.3021604 48.1160122,7.3291081 48.1142343,7.3271956 48.1165861,7.331492 48.1212266,7.3680187 48.1287668,7.3588999 48.1348856,7.3605461 48.1478154,7.3354393 48.1479747,7.3362361 48.1504455,7.3190912 48.1557655,7.3183498 48.1637729,7.3431171 48.1649953,7.3517792 48.176481,7.3628895 48.1682446,7.369424 48.1782191,7.3660567 48.1790895,7.3677885 48.1906358,7.375574 48.1908195,7.3829473 48.2037986,7.3955639 48.206989,7.4079415 48.202248,7.4281221 48.2020971,7.4354089 48.2174647,7.4080308 48.2239596,7.4040246 48.2313657,7.3538904 48.2485096,7.326155 48.2442722,7.3097262 48.2536971,7.3144023 48.2634505,7.3201798 48.2611183,7.3336314 48.2727533,7.3044692 48.2680753,7.2923191 48.2705232,7.2907635 48.2741292,7.3015072 48.2824187,7.2750773 48.3054519,7.2650689 48.3033705,7.2527353 48.3062723,7.2418626 48.3024616,7.2349642 48.3095822,7.1983663 48.3102622,7.1969956 48.3153235,7.1895414 48.3186783,7.1916462 48.3248083,7.1776452 48.3251424,7.1808736 48.3352009,7.1851454 48.3360746,7.1838848 48.3391728,7.1694175 48.3416371,7.152719 48.3331324,7.1185582 48.3333417,7.1124378 48.335221,7.1075108 48.3442763,7.0760085 48.3527223,7.0646271 48.3513593,7.0531268 48.3436702,7.0530382 48.3334971,7.0377648 48.3287575,7.03889 48.3213153,7.0331249 48.312728,7.0443075 48.314909,7.0393533 48.3080621,7.0432583 48.3027291,7.0488016 48.3083703,7.0461608 48.3132993,7.0536568 48.3155079,7.0837038 48.2966764,7.074878 48.295627,7.0728709 48.2904388,7.0565199 48.2812333,7.0478142 48.2840282,7.0492483 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  }

  /**
   * TODO: The JTS library does not properly support wrapping around a pole.
   * https://github.com/gbif/gbif-api/issues/44
   *
   * <a href="https://github.com/locationtech/spatial4j#why-not-use-jts-why-should-you-use-spatial4j">The README on
   * Spatial4J</a>, which is a derivative of JTS, says "it wraps JTS geometries to add dateline-wrap support (no pole wrap yet)."
   *
   * https://github.com/locationtech/spatial4j/issues/5
   */
  @Disabled
  @Test
  public void testGoodPolygonOverPole() {
    // A big polygon over the Arctic
    new WithinPredicate("POLYGON((-40 65,80 75,160 65, 220 75,280 55,-40 65))");
    // The same, but with all values ≤±180.
    new WithinPredicate("POLYGON((-40 65,80 75,160 65,-140 75,-80 55,-40 65))");

    // A more detailed polygon around the Arctic (CAFF polygon, vastly simplified).
    // https://dev.gbif.org/issues/browse/POR-3042/
    new WithinPredicate("POLYGON((-181 50,-180 50,-179 50,-170 51,-150 67,-130 62,-110 59,-90 55,-70 52,-50 59,-30 66,-10 62,10 66,30 66,50 66,70 65,90 64,110 63,130 63,150 62,170 53,178 50,179 50,-181 50))");
  }

  @Test
  public void testInterpolatedRectangleOverPole() {
    // The CAFF (ish) Arctic polygon, "fixed" by turning it into a WGS84 rectangle, and interpolating so the wrap-around doesn't have a distance of >180°.
    new WithinPredicate("POLYGON((-180 90,-180 50,-179 50,-170 51,-150 67,-130 62,-110 59,-90 55,-70 52,-50 59,-30 66,-10 62,10 66,30 66,50 66,70 65,90 64,110 63,130 63,150 62,170 53,178 50,179 50,180 50,180 90,60 90,-60 90,-180 90))");
  }

  @Test
  public void testOldDownload() {
    // A polygon that is no longer valid should still be read.
    new WithinPredicate("POLYGON((179.99706 50.42798,175.71729 50.32125,164.69551 54.46408,164.41784 58.23259,152.93250 62.42883,149.28338 61.42635,145.49908 63.19071,135.05338 62.47747,121.47856 63.88828,118.42940 61.72106,92.03338 63.48794,88.04893 65.83859,72.38348 64.83205,35.10765 65.27235,20.53798 66.27026,15.93477 63.64430,13.23228 64.16949,14.02329 66.20159,-3.98112 66.35560,-5.28656 60.41050,-24.62696 63.13864,-26.61983 66.37187,-35.26608 65.57732,-42.55152 58.69327,-51.84071 58.60134,-55.81483 49.91863,-85.07522 48.86776,-87.99834 53.35866,-109.22832 59.11742,-121.84178 55.37470,-134.08814 63.56701,-141.82291 64.54874,-141.93138 68.24804,-158.60607 65.39087,-150.05958 56.55879,-167.23505 51.12098,-180.00299 50.42801,-180.00000 90.00000,180.00000 90.00000,179.99706 50.42798))");
  }
}