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