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setAOI.js
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setAOI.js
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import React, { useState } from 'react';
import * as turf from '@turf/turf';
import { FormattedMessage } from 'react-intl';
import messages from './messages';
import { paintOptions } from './create';
import { Button } from '../button';
import { makeGrid } from './setTaskSizes';
var tj = require('@mapbox/togeojson');
var osmtogeojson = require('osmtogeojson');
var shp = require('shpjs');
export default function SetAOI({ mapObj, metadata, updateMetadata, setErr }) {
const [arbitraryTasks, setArbitrary] = useState(metadata.arbitraryTasks);
const layer_name = 'aoi';
const setDataGeom = geom => {
const area = turf.area(geom) / 1e6;
const zoomLevel = mapObj.map.getZoom() + 4;
const grid = makeGrid(geom, zoomLevel, {});
mapObj.map.fitBounds(turf.bbox(geom), { padding: 20 });
updateMetadata({
...metadata,
geom: geom,
area: area.toFixed(2),
zoomLevel: zoomLevel,
taskGrid: grid,
tempTaskGrid: grid,
});
if (mapObj.map.getLayer(layer_name)) {
mapObj.map.removeLayer(layer_name);
}
if (mapObj.map.getSource(layer_name)) {
mapObj.map.removeSource(layer_name);
}
mapObj.map.addLayer({
id: layer_name,
type: 'fill',
source: {
type: 'geojson',
data: geom,
},
paint: paintOptions,
});
};
const verifyAndSetData = event => {
try {
setDataGeom(event.features[0].geometry);
} catch (e) {
deleteHandler();
setErr({ error: true, message: 'Invalid file' });
}
};
const uploadFile = event => {
setArbitrary(true);
let files = event.target.files;
let file = files[0];
if (!file) {
return null;
}
const format = file.name.split('.')[1].toLowerCase();
let fileReader = new FileReader();
fileReader.onload = e => {
let geom = null;
switch (format) {
case 'json':
geom = JSON.parse(e.target.result);
break;
case 'geojson':
geom = JSON.parse(e.target.result);
break;
case 'kml':
let kml = new DOMParser().parseFromString(e.target.result, 'text/xml');
geom = tj.kml(kml);
break;
case 'osm':
let osm = new DOMParser().parseFromString(e.target.result, 'text/xml');
geom = osmtogeojson(osm);
break;
case 'xml':
let xml = new DOMParser().parseFromString(e.target.result, 'text/xml');
geom = osmtogeojson(xml);
break;
case 'zip':
shp(e.target.result).then(function(geom) {
verifyAndSetData(geom);
});
break;
default:
break;
}
if (format !== 'zip') {
verifyAndSetData(geom);
}
};
if (format === 'zip') {
fileReader.readAsArrayBuffer(file);
} else {
fileReader.readAsText(file);
}
};
const deleteHandler = () => {
if (mapObj.map.getLayer(layer_name)) {
mapObj.map.removeLayer(layer_name);
}
if (mapObj.map.getSource(layer_name)) {
mapObj.map.removeSource(layer_name);
}
updateMetadata({ ...metadata, area: 0 });
};
const drawHandler = () => {
const updateArea = event => {
// Validate area first.
const id = event.features[0].id;
const geom = turf.featureCollection(event.features);
mapObj.draw.delete(id);
setArbitrary(false);
setDataGeom(geom);
};
mapObj.map.once('draw.create', updateArea);
mapObj.draw.changeMode('draw_polygon');
};
return (
<>
<h3 className="f3 fw6 mt2 mb3 ttu barlow-condensed blue-dark">
<FormattedMessage {...messages.step1} />
</h3>
<div className="pb4">
<h3>
<FormattedMessage {...messages.option1} />:
</h3>
<p>
<FormattedMessage {...messages.drawDescription} />
</p>
<Button className="bg-blue-dark white" onClick={drawHandler}>
<FormattedMessage {...messages.draw} />
</Button>
</div>
<div className="pb4">
<h3>
<FormattedMessage {...messages.option2} />:
</h3>
<p>
<FormattedMessage {...messages.importDescription} />
</p>
<div className="pb2">
<input
type="checkbox"
className="v-mid"
defaultChecked={metadata.arbitraryTasks}
onChange={() => {
if (arbitraryTasks === true) {
updateMetadata({ ...metadata, arbitraryTasks: !metadata.arbitraryTasks });
}
}}
/>
<span className="pl2 v-mid">
<FormattedMessage {...messages.arbitraryTasks} />
</span>
</div>
<div className="pt3">
<label
for="file-upload"
className="bg-blue-dark white br1 f5 bn pointer"
style={{ padding: '.75rem 1.5rem' }}
>
<FormattedMessage {...messages.uploadFile} />
</label>
<input onChange={uploadFile} style={{ display: 'none' }} id="file-upload" type="file" />
</div>
</div>
{metadata.geom && (
<div className="pt4">
<Button className="bg-red white" onClick={deleteHandler}>
<FormattedMessage {...messages.deleteArea} />
</Button>
</div>
)}
</>
);
}