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import 'maplibre-gl/dist/maplibre-gl.css';
import maplibregl from 'maplibre-gl';
import React, {
useRef, useLayoutEffect, useEffect, useState,
} from 'react';
import { SwitcherControl } from '../switcher/switcher';
import { useAttributePreference } from '../../common/util/preferences';
import usePersistedState, { savePersistedState } from '../../common/util/usePersistedState';
import { mapImages } from './preloadImages';
import useMapStyles from './useMapStyles';
const element = document.createElement('div');
element.style.width = '100%';
element.style.height = '100%';
element.style.boxSizing = 'initial';
export const map = new maplibregl.Map({
container: element,
attributionControl: false,
});
let ready = false;
const readyListeners = new Set();
const addReadyListener = (listener) => {
readyListeners.add(listener);
listener(ready);
};
const removeReadyListener = (listener) => {
readyListeners.delete(listener);
};
const updateReadyValue = (value) => {
ready = value;
readyListeners.forEach((listener) => listener(value));
};
const initMap = async () => {
if (ready) return;
if (!map.hasImage('background')) {
Object.entries(mapImages).forEach(([key, value]) => {
map.addImage(key, value, {
pixelRatio: window.devicePixelRatio,
});
});
}
updateReadyValue(true);
};
map.addControl(new maplibregl.NavigationControl());
const switcher = new SwitcherControl(
() => updateReadyValue(false),
(styleId) => savePersistedState('selectedMapStyle', styleId),
() => {
map.once('styledata', () => {
const waiting = () => {
if (!map.loaded()) {
setTimeout(waiting, 33);
} else {
initMap();
}
};
waiting();
});
},
);
map.addControl(switcher);
const MapView = ({ children }) => {
const containerEl = useRef(null);
const [mapReady, setMapReady] = useState(false);
const mapStyles = useMapStyles();
const [activeMapStyles] = usePersistedState('activeMapStyles', ['locationIqStreets', 'osm', 'carto']);
const [defaultMapStyle] = usePersistedState('selectedMapStyle', 'locationIqStreets');
const mapboxAccessToken = useAttributePreference('mapboxAccessToken');
const maxZoom = useAttributePreference('web.maxZoom');
useEffect(() => {
if (maxZoom) {
map.setMaxZoom(maxZoom);
}
}, [maxZoom]);
useEffect(() => {
maplibregl.accessToken = mapboxAccessToken;
}, [mapboxAccessToken]);
useEffect(() => {
const filteredStyles = mapStyles.filter((style) => style.available && activeMapStyles.includes(style.id));
switcher.updateStyles(filteredStyles, defaultMapStyle);
}, [mapStyles, defaultMapStyle]);
useEffect(() => {
const listener = (ready) => setMapReady(ready);
addReadyListener(listener);
return () => {
removeReadyListener(listener);
};
}, []);
useLayoutEffect(() => {
const currentEl = containerEl.current;
currentEl.appendChild(element);
map.resize();
return () => {
currentEl.removeChild(element);
};
}, [containerEl]);
return (
<div style={{ width: '100%', height: '100%' }} ref={containerEl}>
{mapReady && children}
</div>
);
};
export default MapView;
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