forked from MapComplete/MapComplete
39 lines
1.5 KiB
TypeScript
39 lines
1.5 KiB
TypeScript
import FeaturePipeline from "./FeaturePipeline";
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import {Utils} from "../../Utils";
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/**
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* Exports given featurePipeline as a geojson FeatureLists (downloads as a json)
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* @param featurePipeline The FeaturePipeline you want to export
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* @param options The options object
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* @param options.metadata True if you want to include the MapComplete metadata, false otherwise
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*/
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export function exportAsGeoJson(featurePipeline: FeaturePipeline, options: { metadata?: boolean} = {}) {
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let defaults = {
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metadata: false,
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}
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options = Utils.setDefaults(options, defaults);
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// Select all features, ignore the freshness and other data
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let featureList: JSON[] = featurePipeline ? featurePipeline.features.data.map((feature) => feature.feature) : ["I'm empty"];
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/**
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* Removes the metadata of MapComplete (all properties starting with an underscore)
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* @param featureList JsonList containing features, output object
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*/
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function removeMetaData(featureList: JSON[]) {
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for (let i=0; i < featureList.length; i++) {
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let feature = featureList[i];
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for (let property in feature.properties) {
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if (property[0] == "_") {
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delete featureList[i]["properties"][property];
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}
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}
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}
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}
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if (!options.metadata) removeMetaData(featureList);
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let geojson = {type: "FeatureCollection", features: featureList}
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Utils.offerContentsAsDownloadableFile(JSON.stringify(geojson), "Geodata.json");
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}
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