54 lines
1.8 KiB
TypeScript
54 lines
1.8 KiB
TypeScript
import {Bounds} from "../Bounds";
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import {TagsFilter} from "../Tags";
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import * as $ from "jquery"
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import * as OsmToGeoJson from "osmtogeojson";
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/**
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* Interfaces overpass to get all the latest data
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*/
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export class Overpass {
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private _filter: TagsFilter
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public static testUrl: string = null
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constructor(filter: TagsFilter) {
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this._filter = filter
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}
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private buildQuery(bbox: string): string {
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const filters = this._filter.asOverpass()
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let filter = ""
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for (const filterOr of filters) {
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filter += 'nwr' + filterOr + ';'
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}
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const query =
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'[out:json][timeout:25]' + bbox + ';(' + filter + ');out body;>;out skel qt;'
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return "https://overpass-api.de/api/interpreter?data=" + encodeURIComponent(query)
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}
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queryGeoJson(bounds: Bounds, continuation: ((any) => void), onFail: ((reason) => void)): void {
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let query = this.buildQuery("[bbox:" + bounds.south + "," + bounds.west + "," + bounds.north + "," + bounds.east + "]")
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if (Overpass.testUrl !== null) {
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console.log("Using testing URL")
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query = Overpass.testUrl;
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}
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$.getJSON(query,
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function (json, status) {
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if (status !== "success") {
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console.log("Query failed")
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onFail(status);
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}
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if (json.elements === [] && json.remarks.indexOf("runtime error") > 0) {
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console.log("Timeout or other runtime error");
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onFail("Runtime error (timeout)")
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return;
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}
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// @ts-ignore
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const geojson = OsmToGeoJson.default(json);
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continuation(geojson);
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}).fail(onFail)
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}
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}
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