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import { LatLngBounds, Icon, MarkerCluster, DivIcon } from 'leaflet';
import React, { useMemo, useState } from 'react';
import ReactDom from 'react-dom/server';
import { GeoJSON, MapContainer, Marker, TileLayer, ZoomControl, useMap } from 'react-leaflet';
import { Group, MediaItem } from '../../models';
import MarkerClusterGroup from '../../lib/MarkerClusterGroup';
import 'leaflet/dist/leaflet.css';
import styles from './Map.module.css';
import TileLayerControl, { TileLayerType } from '../TileLayerControl/TileLayerControl';
import ReactLeafletControl from '../ReactLeafletControl/ReactLeafletControl';
import { LineString } from 'geojson';
interface Props {
group: Group | undefined;
handleMarkerClick: (photo: string) => void;
}
export default function Map({ group, handleMarkerClick }: Props): JSX.Element {
const [tileLayer, setTileLayer] = useState<TileLayerType>(TileLayerType.map);
const displayedMedia = useMemo(() => {
if (group?.media !== undefined) {
return group.media.filter(
(p) =>
p.latitude !== undefined &&
p.latitude !== null &&
!isNaN(p.latitude) &&
p.latitude !== 0 &&
p.longitude !== undefined &&
p.longitude !== null &&
!isNaN(p.longitude) &&
p.longitude !== 0 &&
p.longitude !== 0,
);
}
return [];
}, [group]);
const bounds = useMemo(() => {
if (group === undefined || (group.geoData === undefined && displayedMedia.length === 0)) {
return new LatLngBounds([75, -145], [-52, 145]);
}
const latitudes = displayedMedia.map((p) => p.latitude) as number[];
const longitudes = displayedMedia.map((p) => p.longitude) as number[];
group.geoData?.forEach((data) => {
if (data.bbox !== undefined) {
latitudes.push(data.bbox[1]);
latitudes.push(data.bbox[3]);
longitudes.push(data.bbox[0]);
longitudes.push(data.bbox[2]);
}
});
const minLatitude = Math.min(...latitudes);
const minLongitude = Math.min(...longitudes);
const maxLatitude = Math.max(...latitudes);
const maxLongitude = Math.max(...longitudes);
return new LatLngBounds([minLatitude, minLongitude], [maxLatitude, maxLongitude]);
}, [group]);
function getClusterGroupIcon(markerCluster: MarkerCluster): DivIcon {
const iconUrl = markerCluster
.getAllChildMarkers()
.filter((m) => m.getIcon().options.iconUrl !== '/icons/thumb-placeholder.png')[0]
.getIcon().options.iconUrl;
return new DivIcon({
html: ReactDom.renderToString(
<>
<img style={{ width: 36, height: 36 }} src={iconUrl} alt="" />
<span className={styles.markerItemCount}>{markerCluster.getChildCount()}</span>
</>,
),
iconSize: [36, 36],
className: styles.markerIcon,
});
}
function createMarkers(media: MediaItem[]): JSX.Element {
if (media.length === 0) {
return <></>;
}
return (
<MarkerClusterGroup iconCreateFunction={getClusterGroupIcon}>
{media.map((mediaItem, index) => (
<Marker
key={index}
position={[mediaItem.latitude as number, mediaItem.longitude as number]}
icon={
new Icon({
iconUrl: mediaItem.thumbnail ?? '/icons/thumb-placeholder.png',
iconSize: [36, 36],
className: styles.markerIcon,
})
}
eventHandlers={{ click: () => handleMarkerClick(mediaItem.name) }}
/>
))}
</MarkerClusterGroup>
);
}
const mapBounds = useMemo(() => {
function MapBounds({ bounds }: { bounds: LatLngBounds }): JSX.Element {
const map = useMap();
if (map !== undefined) {
map.setView(bounds.getCenter());
map.fitBounds(bounds, { padding: [40, 40] });
}
return <></>;
}
return <MapBounds bounds={bounds} />;
}, [group]);
return (
<MapContainer
bounds={bounds}
scrollWheelZoom
style={{ height: '100%', width: '100%' }}
keyboard
zoomControl={false}
>
<>
<ReactLeafletControl position="bottomleft">
<TileLayerControl
key="tile-layer-control"
tileType={tileLayer}
onClick={() =>
setTileLayer(
tileLayer === TileLayerType.map ? TileLayerType.satellite : TileLayerType.map,
)
}
/>
</ReactLeafletControl>
{tileLayer === TileLayerType.map ? (
<TileLayer
key="tile-layer"
attribution='© <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
maxNativeZoom={19}
maxZoom={19}
/>
) : (
<TileLayer
key="tile-layer-satellite"
attribution='© <a href="https://google.com/">Google</a>'
url="https://{s}.google.com/kh/v=930?x={x}&y={y}&z={z}"
subdomains={['khms0', 'khms1', 'khms2', 'khms3']}
maxNativeZoom={21}
maxZoom={21}
/>
)}
<ZoomControl key="zoom-control" position="bottomright" />
{mapBounds}
{createMarkers(displayedMedia)}
{group?.geoData?.map((data, i) => {
const coordinates = (data.features?.[0]?.geometry as LineString).coordinates;
const startCoords = coordinates[0].slice(0, 2).reverse();
const finishCoords = coordinates[coordinates.length - 1].slice(0, 2).reverse();
return (
<React.Fragment key={i}>
<GeoJSON key={`geodata-${group.id}-${i}`} data={data} />
<Marker
key={`start-marker-${group.id}-${i}`}
position={startCoords as [number, number]}
icon={new Icon({ iconUrl: '/icons/start.png', className: styles.iconShadow })}
/>
<Marker
key={`finish-marker-${group.id}-${i}`}
position={finishCoords as [number, number]}
icon={new Icon({ iconUrl: '/icons/finish.png', className: styles.iconShadow })}
/>
</React.Fragment>
);
})}
</>
</MapContainer>
);
}
|