137 lines
4.9 KiB
TypeScript
137 lines
4.9 KiB
TypeScript
import {GeoOperations} from "./GeoOperations";
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import CodeGrid from "./Web/CodeGrid";
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import State from "../State";
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import opening_hours from "opening_hours";
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class SimpleMetaTagger {
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private _f: (feature: any, index: number) => void;
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public readonly keys: string[];
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public readonly doc: string;
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constructor(keys: string[], doc: string, f: ((feature: any, index: number) => void)) {
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this.keys = keys;
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this.doc = doc;
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this._f = f;
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for (const key of keys) {
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if (!key.startsWith('_')) {
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throw `Incorrect metakey ${key}: it should start with underscore (_)`
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}
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}
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}
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addMetaTags(features: any[]) {
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for (let i = 0; i < features.length; i++) {
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let feature = features[i];
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this._f(feature, i);
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}
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}
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}
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/**
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* Metatagging adds various tags to the elements, e.g. lat, lon, surface area, ...
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*
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* All metatags start with an underscore
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*/
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export default class MetaTagging {
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public static metatags = [
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new SimpleMetaTagger(["_lat", "_lon"], "The latitude and longitude of the point (or centerpoint in the case of a way/area)",
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(feature => {
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const centerPoint = GeoOperations.centerpoint(feature);
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const lat = centerPoint.geometry.coordinates[1];
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const lon = centerPoint.geometry.coordinates[0];
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feature.properties["_lat"] = "" + lat;
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feature.properties["_lon"] = "" + lon;
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})
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),
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new SimpleMetaTagger(
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["_surface", "_surface:ha"], "The surface area of the feature, in square meters and in hectare. Not set on points and ways",
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(feature => {
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const sqMeters = GeoOperations.surfaceAreaInSqMeters(feature);
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feature.properties["_surface"] = "" + sqMeters;
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feature.properties["_surface:ha"] = "" + Math.floor(sqMeters / 1000) / 10;
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})
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),
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new SimpleMetaTagger(
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["_country"], "The country code of the point",
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((feature, index) => {
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const centerPoint = GeoOperations.centerpoint(feature);
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const lat = centerPoint.geometry.coordinates[1];
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const lon = centerPoint.geometry.coordinates[0]
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// But the codegrid SHOULD be a number!
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CodeGrid.getCode(lat, lon, (error, code) => {
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if (error === null) {
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feature.properties["_country"] = code;
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// There is a huge performance issue: if there are ~1000 features receiving a ping at the same time,
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// The application hangs big time
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// So we disable pinging all together
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} else {
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console.warn("Could not determine country for", feature.properties.id, error);
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}
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});
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})
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),
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new SimpleMetaTagger(
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["_isOpen", "_isOpen:description"], "If 'opening_hours' is present, it will add the current state of the feature (being 'yes' or 'no",
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(feature => {
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const tagsSource = State.state.allElements.addOrGetElement(feature);
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tagsSource.addCallback(tags => {
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if (tags["opening_hours"] !== undefined && tags["_country"] !== undefined) {
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if (tags._isOpen !== undefined) {
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// Already defined
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return;
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}
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const oh = new opening_hours(tags["opening_hours"], {
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lat: tags._lat,
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lon: tags._lon,
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address: {
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country_code: tags._country
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}
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}, {tag_key: "opening_hours"});
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const updateTags = () => {
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tags["_isOpen"] = oh.getState() ? "yes" : "no";
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const comment = oh.getComment();
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if (comment) {
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tags["_isOpen:description"] = comment;
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}
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const nextChange = oh.getNextChange() as Date;
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if (nextChange !== undefined) {
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window.setTimeout(
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updateTags,
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(nextChange.getTime() - (new Date()).getTime())
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)
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}
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}
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updateTags();
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}
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})
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})
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)
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];
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static addMetatags(features: any[]) {
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for (const metatag of MetaTagging.metatags) {
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metatag.addMetaTags(features);
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}
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}
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}
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