use geo::algorithm::{centroid::Centroid, coords_iter::CoordsIter};
use geo::simplify_vw::SimplifyVwPreserve;
use geo::{Geometry, Point};
use geozero::geojson::GeoJson;
use geozero::ToGeo;

#[test]
fn centroid() {
    let geojson = GeoJson(
        r#"{"type": "Polygon", "coordinates": [[[0, 0], [10, 0], [10, 6], [0, 6], [0, 0]]]}"#,
    );
    if let Ok(Geometry::Polygon(poly)) = geojson.to_geo() {
        assert_eq!(poly.centroid().unwrap(), Point::new(5.0, 3.0));
    }
}

#[test]
fn simplify() {
    let geojson = GeoJson(
        r#"{"type": "LineString", "coordinates": [[1875038.447610231,-3269648.6879248763],[1874359.641504197,-3270196.812984864],[1874141.0428635243,-3270953.7840121365],[1874440.1778162003,-3271619.4315206874],[1876396.0598222911,-3274138.747656357],[1876442.0805243007,-3275052.60551469],[1874739.312657555,-3275457.333765534]]}"#,
    );
    if let Ok(Geometry::LineString(line)) = geojson.to_geo() {
        assert_eq!(line.coords_count(), 7);
        let simplified = line.simplify_vw_preserve(&800000.0);
        assert_eq!(simplified.coords_count(), 4);
    }
}