52 lines
1.7 KiB
TypeScript
52 lines
1.7 KiB
TypeScript
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import { Store, Stores, UIEventSource } from "../UIEventSource"
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import GeocodingProvider, {
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GeocodeResult,
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GeocodingOptions,
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ReverseGeocodingProvider,
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ReverseGeocodingResult,
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} from "./GeocodingProvider"
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import { decode as pluscode_decode } from "pluscodes"
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export default class OpenLocationCodeSearch implements GeocodingProvider {
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/**
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* A regex describing all plus-codes
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*/
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public static readonly _isPlusCode = /^([2-9CFGHJMPQRVWX]{2}|00){2,4}\+([2-9CFGHJMPQRVWX]{2,3})?$/
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/**
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*
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* OpenLocationCodeSearch.isPlusCode("9FFW84J9+XG") // => true
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* OpenLocationCodeSearch.isPlusCode("9FFW84J9+") // => true
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* OpenLocationCodeSearch.isPlusCode("9AFW84J9+") // => false
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* OpenLocationCodeSearch.isPlusCode("9FFW+") // => true
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* OpenLocationCodeSearch.isPlusCode("9FFW0000+") // => true
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* OpenLocationCodeSearch.isPlusCode("9FFw0000+") // => true
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* OpenLocationCodeSearch.isPlusCode("9FFW000+") // => false
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*
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*/
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public static isPlusCode(str: string) {
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return str.toUpperCase().match(this._isPlusCode) !== null
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}
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async search(query: string, options?: GeocodingOptions): Promise<GeocodeResult[]> {
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if (!OpenLocationCodeSearch.isPlusCode(query)) {
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return undefined
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}
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const { latitude, longitude } = pluscode_decode(query)
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return [{
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lon: longitude,
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lat: latitude,
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description: "Open Location Code",
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osm_id: query,
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display_name: query.toUpperCase(),
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}]
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}
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suggest?(query: string, options?: GeocodingOptions): Store<GeocodeResult[]> {
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return Stores.FromPromise(this.search(query, options))
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}
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}
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