/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
import GeoJSON from 'ol/format/GeoJSON';
import { Point } from 'geojson';
import {
  getExtentFromFeatures,
  getProjectedCoordinateFromPointGeoJson,
} from '../../src/util/geometryUtil';
import { ChartConfig } from '../../src/types';

describe('geometryUtil', () => {
  describe('getProjectedCoordinateFromPointGeoJson', () => {
    it('returns a plausible result', () => {
      const pointGeoJson: Point = {
        type: 'Point',
        coordinates: [6.6555, 49.74283],
      };
      const result = getProjectedCoordinateFromPointGeoJson(pointGeoJson);

      expect(result.length).toEqual(2);

      const valuesAreNumbers =
        !Number.isNaN(result[0]) && !Number.isNaN(result[1]);
      expect(valuesAreNumbers).toEqual(true);
    });
  });

  describe('getExtentFromFeatures', () => {
    it('computes correct extent with valid input', () => {
      const expectedExtent = [1, 2, 3, 4];

      const chartConfig: ChartConfig = {
        type: 'FeatureCollection',
        features: [
          {
            type: 'Feature',
            geometry: {
              type: 'Point',
              coordinates: [expectedExtent[0], expectedExtent[1]],
            },
            properties: {
              setDataMask: '',
              labelMap: '',
              labelMapB: '',
              groupby: '',
              selectedValues: '',
              formData: '',
              groupbyB: '',
              seriesBreakdown: '',
              legendData: '',
              echartOptions: '',
            },
          },
          {
            type: 'Feature',
            geometry: {
              type: 'Point',
              coordinates: [expectedExtent[2], expectedExtent[3]],
            },
            properties: {
              setDataMask: '',
              labelMap: '',
              labelMapB: '',
              groupby: '',
              selectedValues: '',
              formData: '',
              groupbyB: '',
              seriesBreakdown: '',
              legendData: '',
              echartOptions: '',
            },
          },
        ],
      };

      const features = new GeoJSON().readFeatures(chartConfig);
      const extent = getExtentFromFeatures(features);
      expect(extent).toEqual(expectedExtent);
    });

    it('returns undefined on invalid input', () => {
      const emptyExtent = getExtentFromFeatures([]);
      expect(emptyExtent).toBeUndefined();
    });
  });
});