46 lines
No EOL
1.5 KiB
TypeScript
46 lines
No EOL
1.5 KiB
TypeScript
import {UIEventSource} from "../UIEventSource";
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import {Utils} from "../../Utils";
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export default interface FeatureSource {
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features: UIEventSource<{ feature: any, freshness: Date }[]>;
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/**
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* Mainly used for debuging
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*/
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name: string;
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}
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export class FeatureSourceUtils {
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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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public static extractGeoJson(featurePipeline: FeatureSource, 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: any[] = featurePipeline.features.data.map((feature) =>
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JSON.parse(JSON.stringify((feature.feature)))); // Make a deep copy!
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if (!options.metadata) {
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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] == "_" && property !== "_lat" && property !== "_lon") {
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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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return {type: "FeatureCollection", features: featureList}
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}
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} |