use crate::error::Result;
use crate::{ColumnValue, FeatureProcessor, GeomProcessor, PropertyProcessor};
use std::fmt::Display;
use std::io::Write;

/// GeoJSON writer.
pub struct GeoJsonWriter<'a, W: Write> {
    out: &'a mut W,
}

impl<'a, W: Write> GeoJsonWriter<'a, W> {
    pub fn new(out: &'a mut W) -> GeoJsonWriter<'a, W> {
        GeoJsonWriter { out }
    }
    fn comma(&mut self, idx: usize) -> Result<()> {
        if idx > 0 {
            let _ = self.out.write(b",")?;
        }
        Ok(())
    }
}

impl<W: Write> FeatureProcessor for GeoJsonWriter<'_, W> {
    fn dataset_begin(&mut self, name: Option<&str>) -> Result<()> {
        let _ = self.out.write(
            br#"{
"type": "FeatureCollection",
"name": ""#,
        )?;
        if let Some(name) = name {
            let _ = self.out.write(name.as_bytes())?;
        }
        let _ = self.out.write(
            br#"",
"features": ["#,
        )?;
        Ok(())
    }
    fn dataset_end(&mut self) -> Result<()> {
        let _ = self.out.write(b"]}")?;
        Ok(())
    }
    fn feature_begin(&mut self, idx: u64) -> Result<()> {
        if idx > 0 {
            let _ = self.out.write(b",\n")?;
        }
        let _ = self.out.write(br#"{"type": "Feature", "#)?;
        Ok(())
    }
    fn feature_end(&mut self, _idx: u64) -> Result<()> {
        let _ = self.out.write(b"}")?;
        Ok(())
    }
    fn properties_begin(&mut self) -> Result<()> {
        let _ = self.out.write(br#""properties": {"#)?;
        Ok(())
    }
    fn properties_end(&mut self) -> Result<()> {
        let _ = self.out.write(b"}, ")?; //TODO: support also properties after geometry!
        Ok(())
    }
    fn geometry_begin(&mut self) -> Result<()> {
        let _ = self.out.write(br#""geometry": "#)?;
        Ok(())
    }
    fn geometry_end(&mut self) -> Result<()> {
        Ok(())
    }
}

impl<W: Write> GeomProcessor for GeoJsonWriter<'_, W> {
    fn xy(&mut self, x: f64, y: f64, idx: usize) -> Result<()> {
        self.comma(idx)?;
        let _ = self.out.write(&format!("[{},{}]", x, y).as_bytes())?;
        Ok(())
    }
    fn point_begin(&mut self, idx: usize) -> Result<()> {
        self.comma(idx)?;
        let _ = self.out.write(br#"{"type": "Point", "coordinates": "#)?;
        Ok(())
    }
    fn point_end(&mut self, _idx: usize) -> Result<()> {
        let _ = self.out.write(b"}")?;
        Ok(())
    }
    fn multipoint_begin(&mut self, _size: usize, idx: usize) -> Result<()> {
        self.comma(idx)?;
        let _ = self
            .out
            .write(br#"{"type": "MultiPoint", "coordinates": ["#)?;
        Ok(())
    }
    fn multipoint_end(&mut self, _idx: usize) -> Result<()> {
        let _ = self.out.write(b"]}")?;
        Ok(())
    }
    fn linestring_begin(&mut self, tagged: bool, _size: usize, idx: usize) -> Result<()> {
        self.comma(idx)?;
        if tagged {
            let _ = self
                .out
                .write(br#"{"type": "LineString", "coordinates": ["#)?;
        } else {
            let _ = self.out.write(b"[")?;
        }
        Ok(())
    }
    fn linestring_end(&mut self, tagged: bool, _idx: usize) -> Result<()> {
        if tagged {
            let _ = self.out.write(b"]}")?;
        } else {
            let _ = self.out.write(b"]")?;
        }
        Ok(())
    }
    fn multilinestring_begin(&mut self, _size: usize, idx: usize) -> Result<()> {
        self.comma(idx)?;
        let _ = self
            .out
            .write(br#"{"type": "MultiLineString", "coordinates": ["#)?;
        Ok(())
    }
    fn multilinestring_end(&mut self, _idx: usize) -> Result<()> {
        let _ = self.out.write(b"]}")?;
        Ok(())
    }
    fn polygon_begin(&mut self, tagged: bool, _size: usize, idx: usize) -> Result<()> {
        self.comma(idx)?;
        if tagged {
            let _ = self.out.write(br#"{"type": "Polygon", "coordinates": ["#)?;
        } else {
            let _ = self.out.write(b"[")?;
        }
        Ok(())
    }
    fn polygon_end(&mut self, tagged: bool, _idx: usize) -> Result<()> {
        if tagged {
            let _ = self.out.write(b"]}")?;
        } else {
            let _ = self.out.write(b"]")?;
        }
        Ok(())
    }
    fn multipolygon_begin(&mut self, _size: usize, idx: usize) -> Result<()> {
        self.comma(idx)?;
        let _ = self
            .out
            .write(br#"{"type": "MultiPolygon", "coordinates": ["#)?;
        Ok(())
    }
    fn multipolygon_end(&mut self, _idx: usize) -> Result<()> {
        let _ = self.out.write(b"]}")?;
        Ok(())
    }
}

fn write_num_prop<'a, W: Write>(out: &'a mut W, colname: &str, v: &dyn Display) -> Result<()> {
    let _ = out.write(&format!(r#""{}": {}"#, colname, v).as_bytes())?;
    Ok(())
}

fn write_str_prop<'a, W: Write>(out: &'a mut W, colname: &str, v: &dyn Display) -> Result<()> {
    let _ = out.write(&format!(r#""{}": "{}""#, colname, v).as_bytes())?;
    Ok(())
}

impl<W: Write> PropertyProcessor for GeoJsonWriter<'_, W> {
    fn property(&mut self, i: usize, colname: &str, colval: &ColumnValue) -> Result<bool> {
        if i > 0 {
            let _ = self.out.write(b", ")?;
        }
        match colval {
            ColumnValue::Byte(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::UByte(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::Bool(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::Short(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::UShort(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::Int(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::UInt(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::Long(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::ULong(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::Float(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::Double(v) => write_num_prop(self.out, colname, &v)?,
            ColumnValue::String(v) => write_str_prop(self.out, colname, &v)?,
            ColumnValue::Json(_v) => (),
            ColumnValue::DateTime(v) => write_str_prop(self.out, colname, &v)?,
            ColumnValue::Binary(_v) => (),
        };
        Ok(false)
    }
}

#[cfg(test)]
mod test {
    use super::*;
    use crate::geojson::read_geojson;
    use crate::ToJson;

    #[test]
    fn geometries() -> Result<()> {
        // countries.fgb, id = ZAF
        let geojson = r#"{"type": "MultiPolygon", "coordinates": [[[[31.521001,-29.257387],[31.325561,-29.401978],[30.901763,-29.909957],[30.622813,-30.423776],[30.055716,-31.140269],[28.925553,-32.172041],[28.219756,-32.771953],[27.464608,-33.226964],[26.419452,-33.61495],[25.909664,-33.66704],[25.780628,-33.944646],[25.172862,-33.796851],[24.677853,-33.987176],[23.594043,-33.794474],[22.988189,-33.916431],[22.574157,-33.864083],[21.542799,-34.258839],[20.689053,-34.417175],[20.071261,-34.795137],[19.616405,-34.819166],[19.193278,-34.462599],[18.855315,-34.444306],[18.424643,-33.997873],[18.377411,-34.136521],[18.244499,-33.867752],[18.25008,-33.281431],[17.92519,-32.611291],[18.24791,-32.429131],[18.221762,-31.661633],[17.566918,-30.725721],[17.064416,-29.878641],[17.062918,-29.875954],[16.344977,-28.576705],[16.824017,-28.082162],[17.218929,-28.355943],[17.387497,-28.783514],[17.836152,-28.856378],[18.464899,-29.045462],[19.002127,-28.972443],[19.894734,-28.461105],[19.895768,-24.76779],[20.165726,-24.917962],[20.758609,-25.868136],[20.66647,-26.477453],[20.889609,-26.828543],[21.605896,-26.726534],[22.105969,-26.280256],[22.579532,-25.979448],[22.824271,-25.500459],[23.312097,-25.26869],[23.73357,-25.390129],[24.211267,-25.670216],[25.025171,-25.71967],[25.664666,-25.486816],[25.765849,-25.174845],[25.941652,-24.696373],[26.485753,-24.616327],[26.786407,-24.240691],[27.11941,-23.574323],[28.017236,-22.827754],[29.432188,-22.091313],[29.839037,-22.102216],[30.322883,-22.271612],[30.659865,-22.151567],[31.191409,-22.25151],[31.670398,-23.658969],[31.930589,-24.369417],[31.752408,-25.484284],[31.837778,-25.843332],[31.333158,-25.660191],[31.04408,-25.731452],[30.949667,-26.022649],[30.676609,-26.398078],[30.685962,-26.743845],[31.282773,-27.285879],[31.86806,-27.177927],[32.071665,-26.73382],[32.83012,-26.742192],[32.580265,-27.470158],[32.462133,-28.301011],[32.203389,-28.752405],[31.521001,-29.257387]],[[28.978263,-28.955597],[28.5417,-28.647502],[28.074338,-28.851469],[27.532511,-29.242711],[26.999262,-29.875954],[27.749397,-30.645106],[28.107205,-30.545732],[28.291069,-30.226217],[28.8484,-30.070051],[29.018415,-29.743766],[29.325166,-29.257387],[28.978263,-28.955597]]]]}"#;
        let mut out: Vec<u8> = Vec::new();
        assert!(read_geojson(geojson.as_bytes(), &mut GeoJsonWriter::new(&mut out)).is_ok());
        // Has Multi-Ring Polygon
        assert_eq!(std::str::from_utf8(&out).unwrap(), geojson);

        // countries.fgb, id = NZL
        let geojson = r#"{"type": "MultiPolygon", "coordinates": [[[[173.020375,-40.919052],[173.247234,-41.331999],[173.958405,-40.926701],[174.247587,-41.349155],[174.248517,-41.770008],[173.876447,-42.233184],[173.22274,-42.970038],[172.711246,-43.372288],[173.080113,-43.853344],[172.308584,-43.865694],[171.452925,-44.242519],[171.185138,-44.897104],[170.616697,-45.908929],[169.831422,-46.355775],[169.332331,-46.641235],[168.411354,-46.619945],[167.763745,-46.290197],[166.676886,-46.219917],[166.509144,-45.852705],[167.046424,-45.110941],[168.303763,-44.123973],[168.949409,-43.935819],[169.667815,-43.555326],[170.52492,-43.031688],[171.12509,-42.512754],[171.569714,-41.767424],[171.948709,-41.514417],[172.097227,-40.956104],[172.79858,-40.493962],[173.020375,-40.919052]]],[[[174.612009,-36.156397],[175.336616,-37.209098],[175.357596,-36.526194],[175.808887,-36.798942],[175.95849,-37.555382],[176.763195,-37.881253],[177.438813,-37.961248],[178.010354,-37.579825],[178.517094,-37.695373],[178.274731,-38.582813],[177.97046,-39.166343],[177.206993,-39.145776],[176.939981,-39.449736],[177.032946,-39.879943],[176.885824,-40.065978],[176.508017,-40.604808],[176.01244,-41.289624],[175.239567,-41.688308],[175.067898,-41.425895],[174.650973,-41.281821],[175.22763,-40.459236],[174.900157,-39.908933],[173.824047,-39.508854],[173.852262,-39.146602],[174.574802,-38.797683],[174.743474,-38.027808],[174.697017,-37.381129],[174.292028,-36.711092],[174.319004,-36.534824],[173.840997,-36.121981],[173.054171,-35.237125],[172.636005,-34.529107],[173.007042,-34.450662],[173.551298,-35.006183],[174.32939,-35.265496],[174.612009,-36.156397]]]]}"#;
        let mut out: Vec<u8> = Vec::new();
        assert!(read_geojson(geojson.as_bytes(), &mut GeoJsonWriter::new(&mut out)).is_ok());
        // Has multiple Polygons
        assert_eq!(std::str::from_utf8(&out).unwrap(), geojson);

        // lines.fgb, first feature
        let geojson = r#"{"type": "LineString", "coordinates": [[1875038.4476102313,-3269648.6879248763],[1874359.6415041967,-3270196.8129848638],[1874141.0428635243,-3270953.7840121365],[1874440.1778162003,-3271619.4315206874],[1876396.0598222911,-3274138.747656357],[1876442.0805243007,-3275052.60551469],[1874739.312657555,-3275457.333765534]]}"#;
        let mut out: Vec<u8> = Vec::new();
        assert!(read_geojson(geojson.as_bytes(), &mut GeoJsonWriter::new(&mut out)).is_ok());
        assert_eq!(
            std::str::from_utf8(&out).unwrap(),
            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]]}"#
        );

        // ne_10m_geographic_lines.fgb, first feature
        let geojson = r#"{"type": "MultiLineString", "coordinates": [[[-20037505.025679983,2692596.21474788],[-19924286.672913034,2692596.21474788],[-19812966.14702537,2692596.21474788],[-19701645.62113772,2692596.21474788],[-19590325.09525006,2692596.21474788],[-19479004.56936241,2692596.21474788],[-19367684.04347475,2692596.21474788],[-19256372.576874677,2692596.21474788],[-19145042.991699435,2692596.21474788],[-19033736.054743163,2692596.21474788],[-18922401.939924125,2692596.21474788],[-18811090.473324053,2692596.21474788],[-18699774.4770802,2692596.21474788],[-18588449.421548743,2692596.21474788],[-18477128.895661093,2692596.21474788],[-18365812.89941723,2692596.21474788],[-18254492.373529565,2692596.21474788],[-18143167.31799812,2692596.21474788],[-18031860.381041847,2692596.21474788],[-17920530.795866605,2692596.21474788],[-17809219.329266533,2692596.21474788],[-17697898.803378873,2692596.21474788],[-17586578.277491223,2692596.21474788],[-17475257.751603562,2692596.21474788],[-17363937.225715913,2692596.21474788],[-17252616.69982825,2692596.21474788],[-17141296.1739406,2692596.21474788],[-17029984.707340535,2692596.21474788],[-16918659.651809078,2692596.21474788],[-16807343.65556522,2692596.21474788],[-16696014.07038997,2692596.21474788],[-16584707.133433694,2692596.21474788],[-16473382.077902246,2692596.21474788],[-16362061.552014597,2692596.21474788],[-16250745.55577073,2692596.21474788],[-16139425.02988307,2692596.21474788],[-16028104.503995419,2692596.21474788],[-15916783.978107756,2692596.21474788],[-15805472.511507692,2692596.21474788],[-15694142.926332444,2692596.21474788],[-15582831.459732382,2692596.21474788],[-15471510.933844728,2692596.21474788],[-15360190.407957068,2692596.21474788],[-15248869.882069414,2692596.21474788],[-15137549.356181756,2692596.21474788],[-15026228.830294106,2692596.21474788],[-14914908.304406442,2692596.21474788],[-14803587.778518781,2692596.21474788],[-14692267.252631132,2692596.21474788],[-14580955.78603106,2692596.21474788],[-14469630.730499614,2692596.21474788],[-14358314.734255752,2692596.21474788],[-14246994.20836809,2692596.21474788],[-14135678.212124234,2692596.21474788],[-14024353.156592779,2692596.21474788],[-13913032.630705126,2692596.21474788],[-13801716.634461263,2692596.21474788],[-13690391.578929815,2692596.21474788],[-13579080.112329746,2692596.21474788],[-13467755.05679829,2692596.21474788],[-13356439.060554435,2692596.21474788],[-13245114.005022977,2692596.21474788],[-13133802.538422907,2692596.21474788],[-13022482.012535257,2692596.21474788],[-12911161.4866476,2692596.21474788],[-12799840.960759947,2692596.21474788],[-12688520.434872286,2692596.21474788],[-12577199.908984635,2692596.21474788],[-12465883.912740769,2692596.21474788],[-12354567.916496906,2692596.21474788],[-12243238.33132166,2692596.21474788],[-12131926.864721594,2692596.21474788],[-12020601.809190147,2692596.21474788],[-11909285.812946282,2692596.21474788],[-11797969.816702416,2692596.21474788],[-11686644.76117097,2692596.21474788],[-11575328.764927106,2692596.21474788],[-11464008.239039455,2692596.21474788],[-11352687.713151794,2692596.21474788],[-11241367.187264143,2692596.21474788],[-11130051.191020276,2692596.21474788],[-11018726.13548883,2692596.21474788],[-10907414.668888763,2692596.21474788],[-10796094.1430011,2692596.21474788],[-10684773.61711345,2692596.21474788],[-10573453.091225792,2692596.21474788],[-10462132.56533813,2692596.21474788],[-10350812.03945048,2692596.21474788],[-10239491.513562817,2692596.21474788],[-10128170.987675166,2692596.21474788],[-10016854.9914313,2692596.21474788],[-9905538.995187437,2692596.21474788],[-9794209.410012191,2692596.21474788],[-9682902.47305592,2692596.21474788],[-9571577.417524474,2692596.21474788],[-9460261.421280608,2692596.21474788],[-9348940.895392958,2692596.21474788],[-9237615.8398615,2692596.21474788],[-9126299.843617637,2692596.21474788],[-9014979.317729987,2692596.21474788],[-8903663.321486121,2692596.21474788],[-8792338.265954675,2692596.21474788],[-8681022.269710807,2692596.21474788],[-8569692.684535567,2692596.21474788],[-8458385.747579295,2692596.21474788],[-8347069.751335428,2692596.21474788],[-8235749.225447779,2692596.21474788],[-8124424.16991632,2692596.21474788],[-8013099.114384874,2692596.21474788],[-7901787.647784806,2692596.21474788],[-7790467.121897143,2692596.21474788],[-7679155.655297086,2692596.21474788],[-7567826.070121832,2692596.21474788],[-7456510.073877977,2692596.21474788],[-7345185.01834652,2692596.21474788],[-7233873.551746452,2692596.21474788],[-7122553.025858803,2692596.21474788],[-7011232.49997114,2692596.21474788],[-6899911.97408349,2692596.21474788],[-6788586.918552041,2692596.21474788],[-6677270.922308178,2692596.21474788],[-6565950.396420515,2692596.21474788],[-6454638.929820447,2692596.21474788],[-6343309.344645206,2692596.21474788],[-6231993.34840134,2692596.21474788],[-6120677.352157486,2692596.21474788],[-6009356.826269826,2692596.21474788],[-5898040.83002596,2692596.21474788],[-5786715.774494514,2692596.21474788],[-5675395.248606861,2692596.21474788],[-55640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        let mut out: Vec<u8> = Vec::new();
        assert!(read_geojson(geojson.as_bytes(), &mut GeoJsonWriter::new(&mut out)).is_ok());
        assert_eq!(
            std::str::from_utf8(&out).unwrap(),
            r#"{"type": "MultiLineString", "coordinates": [[[-20037505.025679983,2692596.21474788],[-19924286.672913034,2692596.21474788],[-19812966.14702537,2692596.21474788],[-19701645.62113772,2692596.21474788],[-19590325.09525006,2692596.21474788],[-19479004.56936241,2692596.21474788],[-19367684.04347475,2692596.21474788],[-19256372.576874677,2692596.21474788],[-19145042.991699435,2692596.21474788],[-19033736.054743163,2692596.21474788],[-18922401.939924125,2692596.21474788],[-18811090.473324053,2692596.21474788],[-18699774.4770802,2692596.21474788],[-18588449.421548743,2692596.21474788],[-18477128.895661093,2692596.21474788],[-18365812.89941723,2692596.21474788],[-18254492.373529565,2692596.21474788],[-18143167.31799812,2692596.21474788],[-18031860.381041847,2692596.21474788],[-17920530.795866605,2692596.21474788],[-17809219.329266533,2692596.21474788],[-17697898.803378873,2692596.21474788],[-17586578.277491223,2692596.21474788],[-17475257.751603562,2692596.21474788],[-17363937.225715913,2692596.21474788],[-17252616.69982825,2692596.21474788],[-17141296.1739406,2692596.21474788],[-17029984.707340535,2692596.21474788],[-16918659.651809078,2692596.21474788],[-16807343.65556522,2692596.21474788],[-16696014.07038997,2692596.21474788],[-16584707.133433694,2692596.21474788],[-16473382.077902246,2692596.21474788],[-16362061.552014597,2692596.21474788],[-16250745.55577073,2692596.21474788],[-16139425.02988307,2692596.21474788],[-16028104.50399542,2692596.21474788],[-15916783.978107756,2692596.21474788],[-15805472.511507692,2692596.21474788],[-15694142.926332444,2692596.21474788],[-15582831.459732382,2692596.21474788],[-15471510.933844728,2692596.21474788],[-15360190.407957068,2692596.21474788],[-15248869.882069414,2692596.21474788],[-15137549.356181756,2692596.21474788],[-15026228.830294106,2692596.21474788],[-14914908.304406442,2692596.21474788],[-14803587.77851878,2692596.21474788],[-14692267.252631132,2692596.21474788],[-14580955.78603106,2692596.21474788],[-14469630.730499614,2692596.21474788],[-14358314.734255752,2692596.21474788],[-14246994.20836809,2692596.21474788],[-14135678.212124234,2692596.21474788],[-14024353.15659278,2692596.21474788],[-13913032.630705126,2692596.21474788],[-13801716.634461263,2692596.21474788],[-13690391.578929815,2692596.21474788],[-13579080.112329746,2692596.21474788],[-13467755.05679829,2692596.21474788],[-13356439.060554435,2692596.21474788],[-13245114.005022977,2692596.21474788],[-13133802.538422909,2692596.21474788],[-13022482.012535255,2692596.21474788],[-12911161.4866476,2692596.21474788],[-12799840.960759947,2692596.21474788],[-12688520.434872286,2692596.21474788],[-12577199.908984637,2692596.21474788],[-12465883.912740769,2692596.21474788],[-12354567.916496906,2692596.21474788],[-12243238.33132166,2692596.21474788],[-12131926.864721594,2692596.21474788],[-12020601.809190148,2692596.21474788],[-11909285.812946282,2692596.21474788],[-11797969.816702416,2692596.21474788],[-11686644.76117097,2692596.21474788],[-11575328.764927106,2692596.21474788],[-11464008.239039456,2692596.21474788],[-11352687.713151794,2692596.21474788],[-11241367.187264144,2692596.21474788],[-11130051.191020276,2692596.21474788],[-11018726.13548883,2692596.21474788],[-10907414.668888764,2692596.21474788],[-10796094.1430011,2692596.21474788],[-10684773.61711345,2692596.21474788],[-10573453.091225792,2692596.21474788],[-10462132.56533813,2692596.21474788],[-10350812.03945048,2692596.21474788],[-10239491.513562815,2692596.21474788],[-10128170.987675166,2692596.21474788],[-10016854.9914313,2692596.21474788],[-9905538.995187435,2692596.21474788],[-9794209.410012191,2692596.21474788],[-9682902.47305592,2692596.21474788],[-9571577.417524474,2692596.21474788],[-9460261.421280608,2692596.21474788],[-9348940.895392958,2692596.21474788],[-9237615.8398615,2692596.21474788],[-9126299.843617637,2692596.21474788],[-9014979.317729987,2692596.21474788],[-8903663.321486121,2692596.21474788],[-8792338.265954675,2692596.21474788],[-8681022.269710807,2692596.21474788],[-8569692.684535567,2692596.21474788],[-8458385.747579295,2692596.21474788],[-8347069.751335428,2692596.21474788],[-8235749.225447779,2692596.21474788],[-8124424.16991632,2692596.21474788],[-8013099.114384874,2692596.21474788],[-7901787.647784806,2692596.21474788],[-7790467.121897143,2692596.21474788],[-7679155.655297086,2692596.21474788],[-7567826.070121832,2692596.21474788],[-7456510.073877977,2692596.21474788],[-7345185.01834652,2692596.21474788],[-7233873.551746452,2692596.21474788],[-7122553.025858803,2692596.21474788],[-7011232.49997114,2692596.21474788],[-6899911.97408349,2692596.21474788],[-6788586.918552041,2692596.21474788],[-6677270.922308178,2692596.21474788],[-6565950.396420515,2692596.21474788],[-6454638.929820447,2692596.21474788],[-6343309.344645206,2692596.21474788],[-6231993.34840134,2692596.21474788],[-6120677.352157486,2692596.21474788],[-6009356.826269826,2692596.21474788],[-5898040.83002596,2692596.21474788],[-5786715.774494514,2692596.21474788],[-5675395.248606861,2692596.21474788],[-5564074.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        );

        // ne_10m_admin_0_country_points.fgb, first feature
        let geojson =
            r#"{"type": "Point", "coordinates": [2223639.4731508396,-15878634.348995442]}"#;
        let mut out: Vec<u8> = Vec::new();
        assert!(read_geojson(geojson.as_bytes(), &mut GeoJsonWriter::new(&mut out)).is_ok());
        assert_eq!(std::str::from_utf8(&out).unwrap(), geojson);

        // geoz_lod1_gebaeude_max_3d_extract.fgb, first feature
        let geojson = r#"{"type": "MultiPolygon", "coordinates": [[[[2683312.339,1247968.33],[2683311.496,1247964.044],[2683307.761,1247964.745],[2683309.16,1247973.337],[2683313.003,1247972.616],[2683312.339,1247968.33]],[[2683312.339,1247968.33],[2683313.003,1247972.616],[2683313.003,1247972.616],[2683312.339,1247968.33],[2683312.339,1247968.33]],[[2683307.761,1247964.745],[2683311.496,1247964.044],[2683311.496,1247964.044],[2683307.761,1247964.745],[2683307.761,1247964.745]],[[2683311.496,1247964.044],[2683312.339,1247968.33],[2683312.339,1247968.33],[2683311.496,1247964.044],[2683311.496,1247964.044]]],[[[2683309.16,1247973.337],[2683307.761,1247964.745],[2683307.761,1247964.745],[2683309.16,1247973.337],[2683309.16,1247973.337]]],[[[2683312.339,1247968.33],[2683311.496,1247964.044],[2683307.761,1247964.745],[2683309.16,1247973.337],[2683313.003,1247972.616],[2683312.339,1247968.33]],[[2683313.003,1247972.616],[2683309.16,1247973.337],[2683309.16,1247973.337],[2683313.003,1247972.616],[2683313.003,1247972.616]]]]}"#;
        let mut out: Vec<u8> = Vec::new();
        assert!(read_geojson(geojson.as_bytes(), &mut GeoJsonWriter::new(&mut out)).is_ok());
        assert_eq!(std::str::from_utf8(&out).unwrap(), geojson);

        Ok(())
    }

    #[test]
    fn feature_collection() -> Result<()> {
        let geojson = r#"{"type": "FeatureCollection", "name": "countries", "features": [{"type": "Feature", "properties": {"id": "NZL", "name": "New Zealand"}, "geometry": {"type": "MultiPolygon", "coordinates": [[[[173.020375,-40.919052],[173.247234,-41.331999],[173.958405,-40.926701],[174.247587,-41.349155],[174.248517,-41.770008],[173.876447,-42.233184],[173.22274,-42.970038],[172.711246,-43.372288],[173.080113,-43.853344],[172.308584,-43.865694],[171.452925,-44.242519],[171.185138,-44.897104],[170.616697,-45.908929],[169.831422,-46.355775],[169.332331,-46.641235],[168.411354,-46.619945],[167.763745,-46.290197],[166.676886,-46.219917],[166.509144,-45.852705],[167.046424,-45.110941],[168.303763,-44.123973],[168.949409,-43.935819],[169.667815,-43.555326],[170.52492,-43.031688],[171.12509,-42.512754],[171.569714,-41.767424],[171.948709,-41.514417],[172.097227,-40.956104],[172.79858,-40.493962],[173.020375,-40.919052]]],[[[174.612009,-36.156397],[175.336616,-37.209098],[175.357596,-36.526194],[175.808887,-36.798942],[175.95849,-37.555382],[176.763195,-37.881253],[177.438813,-37.961248],[178.010354,-37.579825],[178.517094,-37.695373],[178.274731,-38.582813],[177.97046,-39.166343],[177.206993,-39.145776],[176.939981,-39.449736],[177.032946,-39.879943],[176.885824,-40.065978],[176.508017,-40.604808],[176.01244,-41.289624],[175.239567,-41.688308],[175.067898,-41.425895],[174.650973,-41.281821],[175.22763,-40.459236],[174.900157,-39.908933],[173.824047,-39.508854],[173.852262,-39.146602],[174.574802,-38.797683],[174.743474,-38.027808],[174.697017,-37.381129],[174.292028,-36.711092],[174.319004,-36.534824],[173.840997,-36.121981],[173.054171,-35.237125],[172.636005,-34.529107],[173.007042,-34.450662],[173.551298,-35.006183],[174.32939,-35.265496],[174.612009,-36.156397]]]]}}]}"#;
        let mut out: Vec<u8> = Vec::new();
        assert!(read_geojson(geojson.as_bytes(), &mut GeoJsonWriter::new(&mut out)).is_ok());
        let jsonout = std::str::from_utf8(&out).unwrap();
        // Properties missing!
        assert_eq!(
            jsonout,
            r#"{
"type": "FeatureCollection",
"name": "",
"features": [{"type": "Feature", "properties": {}, "geometry": {"type": "MultiPolygon", "coordinates": [[[[173.020375,-40.919052],[173.247234,-41.331999],[173.958405,-40.926701],[174.247587,-41.349155],[174.248517,-41.770008],[173.876447,-42.233184],[173.22274,-42.970038],[172.711246,-43.372288],[173.080113,-43.853344],[172.308584,-43.865694],[171.452925,-44.242519],[171.185138,-44.897104],[170.616697,-45.908929],[169.831422,-46.355775],[169.332331,-46.641235],[168.411354,-46.619945],[167.763745,-46.290197],[166.676886,-46.219917],[166.509144,-45.852705],[167.046424,-45.110941],[168.303763,-44.123973],[168.949409,-43.935819],[169.667815,-43.555326],[170.52492,-43.031688],[171.12509,-42.512754],[171.569714,-41.767424],[171.948709,-41.514417],[172.097227,-40.956104],[172.79858,-40.493962],[173.020375,-40.919052]]],[[[174.612009,-36.156397],[175.336616,-37.209098],[175.357596,-36.526194],[175.808887,-36.798942],[175.95849,-37.555382],[176.763195,-37.881253],[177.438813,-37.961248],[178.010354,-37.579825],[178.517094,-37.695373],[178.274731,-38.582813],[177.97046,-39.166343],[177.206993,-39.145776],[176.939981,-39.449736],[177.032946,-39.879943],[176.885824,-40.065978],[176.508017,-40.604808],[176.01244,-41.289624],[175.239567,-41.688308],[175.067898,-41.425895],[174.650973,-41.281821],[175.22763,-40.459236],[174.900157,-39.908933],[173.824047,-39.508854],[173.852262,-39.146602],[174.574802,-38.797683],[174.743474,-38.027808],[174.697017,-37.381129],[174.292028,-36.711092],[174.319004,-36.534824],[173.840997,-36.121981],[173.054171,-35.237125],[172.636005,-34.529107],[173.007042,-34.450662],[173.551298,-35.006183],[174.32939,-35.265496],[174.612009,-36.156397]]]]}}]}"#
        );
        Ok(())
    }

    #[test]
    fn conversions() {
        let geom: geo_types::Geometry<f64> = geo_types::Point::new(10.0, 20.0).into();
        assert_eq!(
            &geom.to_json().unwrap(),
            r#"{"type": "Point", "coordinates": [10,20]}"#
        );
    }
}