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import { useEffect, useState } from 'react';
import { kml } from '@tmcw/togeojson';
import { useTheme } from '@mui/styles';
import { map } from '../core/MapView';
import { useEffectAsync } from '../../reactHelper';
import { usePreference } from '../../common/util/preferences';
import { findFonts } from '../core/mapUtil';
const PoiMap = () => {
const id = 'poi';
const theme = useTheme();
const poiLayer = usePreference('poiLayer');
const [data, setData] = useState(null);
useEffectAsync(async () => {
if (poiLayer) {
const file = await fetch(poiLayer);
const dom = new DOMParser().parseFromString(await file.text(), 'text/xml');
setData(kml(dom));
}
}, [poiLayer]);
useEffect(() => {
if (data) {
map.addSource(id, {
type: 'geojson',
data,
});
map.addLayer({
source: id,
id: 'poi-point',
type: 'circle',
paint: {
'circle-radius': 5,
'circle-color': theme.palette.colors.geometry,
},
});
map.addLayer({
source: id,
id: 'poi-line',
type: 'line',
paint: {
'line-color': theme.palette.colors.geometry,
'line-width': 2,
},
});
map.addLayer({
source: id,
id: 'poi-title',
type: 'symbol',
layout: {
'text-field': '{name}',
'text-anchor': 'bottom',
'text-offset': [0, -0.5],
'text-font': findFonts(map),
'text-size': 12,
},
paint: {
'text-halo-color': 'white',
'text-halo-width': 1,
},
});
return () => {
if (map.getLayer('poi-point')) {
map.removeLayer('poi-point');
}
if (map.getLayer('poi-line')) {
map.removeLayer('poi-line');
}
if (map.getLayer('poi-title')) {
map.removeLayer('poi-title');
}
if (map.getSource(id)) {
map.removeSource(id);
}
};
}
return () => {};
}, [data]);
return null;
};
export default PoiMap;
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