forked from MapComplete/MapComplete
		
	
		
			
				
	
	
		
			606 lines
		
	
	
	
		
			23 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			606 lines
		
	
	
	
		
			23 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
| import { GeoOperations } from "./GeoOperations"
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| import { Utils } from "../Utils"
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| import opening_hours from "opening_hours"
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| import Combine from "../UI/Base/Combine"
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| import BaseUIElement from "../UI/BaseUIElement"
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| import Title from "../UI/Base/Title"
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| import { FixedUiElement } from "../UI/Base/FixedUiElement"
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| import LayerConfig from "../Models/ThemeConfig/LayerConfig"
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| import { CountryCoder } from "latlon2country"
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| import Constants from "../Models/Constants"
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| import { TagUtils } from "./Tags/TagUtils"
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| import { Feature, LineString } from "geojson"
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| 
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| export class SimpleMetaTagger {
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|     public readonly keys: string[]
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|     public readonly doc: string
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|     public readonly isLazy: boolean
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|     public readonly includesDates: boolean
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|     public readonly applyMetaTagsOnFeature: (
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|         feature: any,
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|         freshness: Date,
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|         layer: LayerConfig,
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|         state
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|     ) => boolean
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| 
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|     /***
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|      * A function that adds some extra data to a feature
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|      * @param docs: what does this extra data do?
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|      * @param f: apply the changes. Returns true if something changed
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|      */
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|     constructor(
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|         docs: {
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|             keys: string[]
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|             doc: string
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|             includesDates?: boolean
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|             isLazy?: boolean
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|             cleanupRetagger?: boolean
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|         },
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|         f: (feature: any, freshness: Date, layer: LayerConfig, state) => boolean
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|     ) {
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|         this.keys = docs.keys
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|         this.doc = docs.doc
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|         this.isLazy = docs.isLazy
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|         this.applyMetaTagsOnFeature = f
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|         this.includesDates = docs.includesDates ?? false
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|         if (!docs.cleanupRetagger) {
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|             for (const key of docs.keys) {
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|                 if (!key.startsWith("_") && key.toLowerCase().indexOf("theme") < 0) {
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|                     throw `Incorrect key for a calculated meta value '${key}': it should start with underscore (_)`
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|                 }
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|             }
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|         }
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|     }
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| }
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| 
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| export class CountryTagger extends SimpleMetaTagger {
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|     private static readonly coder = new CountryCoder(
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|         Constants.countryCoderEndpoint,
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|         Utils.downloadJson
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|     )
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|     public runningTasks: Set<any>
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| 
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|     constructor() {
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|         const runningTasks = new Set<any>()
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|         super(
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|             {
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|                 keys: ["_country"],
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|                 doc: "The country code of the property (with latlon2country)",
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|                 includesDates: false,
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|             },
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|             (feature, _, __, state) => {
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|                 let centerPoint: any = 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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|                 runningTasks.add(feature)
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|                 CountryTagger.coder
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|                     .GetCountryCodeAsync(lon, lat)
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|                     .then((countries) => {
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|                         runningTasks.delete(feature)
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|                         try {
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|                             const oldCountry = feature.properties["_country"]
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|                             feature.properties["_country"] = countries[0].trim().toLowerCase()
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|                             if (oldCountry !== feature.properties["_country"]) {
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|                                 const tagsSource = state?.allElements?.getEventSourceById(
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|                                     feature.properties.id
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|                                 )
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|                                 tagsSource?.ping()
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|                             }
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|                         } catch (e) {
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|                             console.warn(e)
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|                         }
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|                     })
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|                     .catch((_) => {
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|                         runningTasks.delete(feature)
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|                     })
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|                 return false
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|             }
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|         )
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|         this.runningTasks = runningTasks
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|     }
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| }
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| 
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| export default class SimpleMetaTaggers {
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|     public static readonly objectMetaInfo = new SimpleMetaTagger(
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|         {
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|             keys: [
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|                 "_last_edit:contributor",
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|                 "_last_edit:contributor:uid",
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|                 "_last_edit:changeset",
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|                 "_last_edit:timestamp",
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|                 "_version_number",
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|                 "_backend",
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|             ],
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|             doc: "Information about the last edit of this object.",
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|         },
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|         (feature) => {
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|             /*Note: also called by 'UpdateTagsFromOsmAPI'*/
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| 
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|             const tgs = feature.properties
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| 
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|             function move(src: string, target: string) {
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|                 if (tgs[src] === undefined) {
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|                     return
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|                 }
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|                 tgs[target] = tgs[src]
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|                 delete tgs[src]
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|             }
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| 
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|             move("user", "_last_edit:contributor")
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|             move("uid", "_last_edit:contributor:uid")
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|             move("changeset", "_last_edit:changeset")
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|             move("timestamp", "_last_edit:timestamp")
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|             move("version", "_version_number")
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|             return true
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|         }
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|     )
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|     public static country = new CountryTagger()
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|     public static geometryType = new SimpleMetaTagger(
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|         {
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|             keys: ["_geometry:type"],
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|             doc: "Adds the geometry type as property. This is identical to the GoeJson geometry type and is one of `Point`,`LineString`, `Polygon` and exceptionally `MultiPolygon` or `MultiLineString`",
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|         },
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|         (feature, _) => {
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|             const changed = feature.properties["_geometry:type"] === feature.geometry.type
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|             feature.properties["_geometry:type"] = feature.geometry.type
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|             return changed
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|         }
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|     )
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|     private static readonly cardinalDirections = {
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|         N: 0,
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|         NNE: 22.5,
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|         NE: 45,
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|         ENE: 67.5,
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|         E: 90,
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|         ESE: 112.5,
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|         SE: 135,
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|         SSE: 157.5,
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|         S: 180,
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|         SSW: 202.5,
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|         SW: 225,
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|         WSW: 247.5,
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|         W: 270,
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|         WNW: 292.5,
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|         NW: 315,
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|         NNW: 337.5,
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|     }
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|     private static latlon = new SimpleMetaTagger(
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|         {
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|             keys: ["_lat", "_lon"],
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|             doc: "The latitude and longitude of the point (or centerpoint in the case of a way/area)",
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|         },
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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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|             feature._lon = lon // This is dirty, I know
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|             feature._lat = lat
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|             return true
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|         }
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|     )
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|     private static layerInfo = new SimpleMetaTagger(
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|         {
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|             doc: "The layer-id to which this feature belongs. Note that this might be return any applicable if `passAllFeatures` is defined.",
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|             keys: ["_layer"],
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|             includesDates: false,
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|         },
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|         (feature, freshness, layer) => {
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|             if (feature.properties._layer === layer.id) {
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|                 return false
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|             }
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|             feature.properties._layer = layer.id
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|             return true
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|         }
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|     )
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|     private static noBothButLeftRight = new SimpleMetaTagger(
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|         {
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|             keys: [
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|                 "sidewalk:left",
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|                 "sidewalk:right",
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|                 "generic_key:left:property",
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|                 "generic_key:right:property",
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|             ],
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|             doc: "Rewrites tags from 'generic_key:both:property' as 'generic_key:left:property' and 'generic_key:right:property' (and similar for sidewalk tagging). Note that this rewritten tags _will be reuploaded on a change_. To prevent to much unrelated retagging, this is only enabled if the layer has at least some lineRenderings with offset defined",
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|             includesDates: false,
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|             cleanupRetagger: true,
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|         },
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|         (feature, state, layer) => {
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|             if (!layer.lineRendering.some((lr) => lr.leftRightSensitive)) {
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|                 return
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|             }
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| 
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|             return SimpleMetaTaggers.removeBothTagging(feature.properties)
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|         }
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|     )
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|     private static surfaceArea = new SimpleMetaTagger(
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|         {
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|             keys: ["_surface", "_surface:ha"],
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|             doc: "The surface area of the feature, in square meters and in hectare. Not set on points and ways",
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|             isLazy: true,
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|         },
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|         (feature) => {
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|             Object.defineProperty(feature.properties, "_surface", {
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|                 enumerable: false,
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|                 configurable: true,
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|                 get: () => {
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|                     const sqMeters = "" + GeoOperations.surfaceAreaInSqMeters(feature)
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|                     delete feature.properties["_surface"]
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|                     feature.properties["_surface"] = sqMeters
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|                     return sqMeters
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|                 },
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|             })
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| 
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|             Object.defineProperty(feature.properties, "_surface:ha", {
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|                 enumerable: false,
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|                 configurable: true,
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|                 get: () => {
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|                     const sqMeters = GeoOperations.surfaceAreaInSqMeters(feature)
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|                     const sqMetersHa = "" + Math.floor(sqMeters / 1000) / 10
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|                     delete feature.properties["_surface:ha"]
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|                     feature.properties["_surface:ha"] = sqMetersHa
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|                     return sqMetersHa
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|                 },
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|             })
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| 
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|             return true
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|         }
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|     )
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|     private static levels = new SimpleMetaTagger(
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|         {
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|             doc: "Extract the 'level'-tag into a normalized, ';'-separated value",
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|             keys: ["_level"],
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|         },
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|         (feature) => {
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|             if (feature.properties["level"] === undefined) {
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|                 return false
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|             }
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| 
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|             const l = feature.properties["level"]
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|             const newValue = TagUtils.LevelsParser(l).join(";")
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|             if (l === newValue) {
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|                 return false
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|             }
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|             feature.properties["level"] = newValue
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|             return true
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|         }
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|     )
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| 
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|     private static canonicalize = new SimpleMetaTagger(
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|         {
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|             doc: "If 'units' is defined in the layoutConfig, then this metatagger will rewrite the specified keys to have the canonical form (e.g. `1meter` will be rewritten to `1m`; `1` will be rewritten to `1m` as well)",
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|             keys: ["Theme-defined keys"],
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|         },
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|         (feature, _, __, state) => {
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|             const units = Utils.NoNull(
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|                 [].concat(...(state?.layoutToUse?.layers?.map((layer) => layer.units) ?? []))
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|             )
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|             if (units.length == 0) {
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|                 return
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|             }
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|             let rewritten = false
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|             for (const key in feature.properties) {
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|                 if (!feature.properties.hasOwnProperty(key)) {
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|                     continue
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|                 }
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|                 for (const unit of units) {
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|                     if (unit === undefined) {
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|                         continue
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|                     }
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|                     if (unit.appliesToKeys === undefined) {
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|                         console.error("The unit ", unit, "has no appliesToKey defined")
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|                         continue
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|                     }
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|                     if (!unit.appliesToKeys.has(key)) {
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|                         continue
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|                     }
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|                     const value = feature.properties[key]
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|                     const denom = unit.findDenomination(value, () => feature.properties["_country"])
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|                     if (denom === undefined) {
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|                         // no valid value found
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|                         break
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|                     }
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|                     const [, denomination] = denom
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|                     const defaultDenom = unit.getDefaultDenomination(
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|                         () => feature.properties["_country"]
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|                     )
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|                     let canonical =
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|                         denomination?.canonicalValue(value, defaultDenom == denomination) ??
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|                         undefined
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|                     if (canonical === value) {
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|                         break
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|                     }
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|                     console.log("Rewritten ", key, ` from '${value}' into '${canonical}'`)
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|                     if (canonical === undefined && !unit.eraseInvalid) {
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|                         break
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|                     }
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| 
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|                     feature.properties[key] = canonical
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|                     rewritten = true
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|                     break
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|                 }
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|             }
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|             return rewritten
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|         }
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|     )
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|     private static lngth = new SimpleMetaTagger(
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|         {
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|             keys: ["_length", "_length:km"],
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|             doc: "The total length of a feature in meters (and in kilometers, rounded to one decimal for '_length:km'). For a surface, the length of the perimeter",
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|         },
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|         (feature) => {
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|             const l = GeoOperations.lengthInMeters(feature)
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|             feature.properties["_length"] = "" + l
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|             const km = Math.floor(l / 1000)
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|             const kmRest = Math.round((l - km * 1000) / 100)
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|             feature.properties["_length:km"] = "" + km + "." + kmRest
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|             return true
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|         }
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|     )
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|     private static isOpen = new SimpleMetaTagger(
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|         {
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|             keys: ["_isOpen"],
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|             doc: "If 'opening_hours' is present, it will add the current state of the feature (being 'yes' or 'no')",
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|             includesDates: true,
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|             isLazy: true,
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|         },
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|         (feature, _, __, state) => {
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|             if (Utils.runningFromConsole) {
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|                 // We are running from console, thus probably creating a cache
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|                 // isOpen is irrelevant
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|                 return false
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|             }
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|             if (feature.properties.opening_hours === "24/7") {
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|                 feature.properties._isOpen = "yes"
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|                 return true
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|             }
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| 
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|             // _isOpen is calculated dynamically on every call
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|             Object.defineProperty(feature.properties, "_isOpen", {
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|                 enumerable: false,
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|                 configurable: true,
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|                 get: () => {
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|                     const tags = feature.properties
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|                     if (tags.opening_hours === undefined) {
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|                         return
 | |
|                     }
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|                     if (tags._country === undefined) {
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|                         return
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|                     }
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| 
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|                     try {
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|                         const [lon, lat] = GeoOperations.centerpointCoordinates(feature)
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|                         const oh = new opening_hours(
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|                             tags["opening_hours"],
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|                             {
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|                                 lat: lat,
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|                                 lon: lon,
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|                                 address: {
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|                                     country_code: tags._country.toLowerCase(),
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|                                     state: undefined,
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|                                 },
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|                             },
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|                             <any>{ tag_key: "opening_hours" }
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|                         )
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| 
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|                         // Recalculate!
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|                         return oh.getState() ? "yes" : "no"
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|                     } catch (e) {
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|                         console.warn("Error while parsing opening hours of ", tags.id, e)
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|                         delete tags._isOpen
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|                         tags["_isOpen"] = "parse_error"
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|                     }
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|                 },
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|             })
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| 
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|             const tagsSource = state.allElements.getEventSourceById(feature.properties.id)
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|         }
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|     )
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|     private static directionSimplified = new SimpleMetaTagger(
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|         {
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|             keys: ["_direction:numerical", "_direction:leftright"],
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|             doc: "_direction:numerical is a normalized, numerical direction based on 'camera:direction' or on 'direction'; it is only present if a valid direction is found (e.g. 38.5 or NE). _direction:leftright is either 'left' or 'right', which is left-looking on the map or 'right-looking' on the map",
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|         },
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|         (feature) => {
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|             const tags = feature.properties
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|             const direction = tags["camera:direction"] ?? tags["direction"]
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|             if (direction === undefined) {
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|                 return false
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|             }
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|             const n = SimpleMetaTaggers.cardinalDirections[direction] ?? Number(direction)
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|             if (isNaN(n)) {
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|                 return false
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|             }
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| 
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|             // The % operator has range (-360, 360). We apply a trick to get [0, 360).
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|             const normalized = ((n % 360) + 360) % 360
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| 
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|             tags["_direction:numerical"] = normalized
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|             tags["_direction:leftright"] = normalized <= 180 ? "right" : "left"
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|             return true
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|         }
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|     )
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| 
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|     private static directionCenterpoint = new SimpleMetaTagger(
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|         {
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|             keys: ["_direction:centerpoint"],
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|             isLazy: true,
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|             doc: "_direction:centerpoint is the direction of the linestring (in degrees) if one were standing at the projected centerpoint.",
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|         },
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|         (feature: Feature) => {
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|             if (feature.geometry.type !== "LineString") {
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|                 return false
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|             }
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| 
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|             const ls = <Feature<LineString>>feature
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| 
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|             Object.defineProperty(feature.properties, "_direction:centerpoint", {
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|                 enumerable: false,
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|                 configurable: true,
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|                 get: () => {
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|                     const centroid = GeoOperations.centerpoint(feature)
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|                     const projected = GeoOperations.nearestPoint(
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|                         ls,
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|                         <[number, number]>centroid.geometry.coordinates
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|                     )
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|                     const nextPoint = ls.geometry.coordinates[projected.properties.index + 1]
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|                     const bearing = GeoOperations.bearing(projected.geometry.coordinates, nextPoint)
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|                     delete feature.properties["_direction:centerpoint"]
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|                     feature.properties["_direction:centerpoint"] = bearing
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|                     return bearing
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|                 },
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|             })
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| 
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|             return true
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|         }
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|     )
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| 
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|     private static currentTime = new SimpleMetaTagger(
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|         {
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|             keys: ["_now:date", "_now:datetime", "_loaded:date", "_loaded:_datetime"],
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|             doc: "Adds the time that the data got loaded - pretty much the time of downloading from overpass. The format is YYYY-MM-DD hh:mm, aka 'sortable' aka ISO-8601-but-not-entirely",
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|             includesDates: true,
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|         },
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|         (feature, freshness) => {
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|             const now = new Date()
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| 
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|             if (typeof freshness === "string") {
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|                 freshness = new Date(freshness)
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|             }
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| 
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|             function date(d: Date) {
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|                 return d.toISOString().slice(0, 10)
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|             }
 | |
| 
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|             function datetime(d: Date) {
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|                 return d.toISOString().slice(0, -5).replace("T", " ")
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|             }
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| 
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|             feature.properties["_now:date"] = date(now)
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|             feature.properties["_now:datetime"] = datetime(now)
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|             feature.properties["_loaded:date"] = date(freshness)
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|             feature.properties["_loaded:datetime"] = datetime(freshness)
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|             return true
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|         }
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|     )
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|     public static metatags: SimpleMetaTagger[] = [
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|         SimpleMetaTaggers.latlon,
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|         SimpleMetaTaggers.layerInfo,
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|         SimpleMetaTaggers.surfaceArea,
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|         SimpleMetaTaggers.lngth,
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|         SimpleMetaTaggers.canonicalize,
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|         SimpleMetaTaggers.country,
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|         SimpleMetaTaggers.isOpen,
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|         SimpleMetaTaggers.directionSimplified,
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|         SimpleMetaTaggers.directionCenterpoint,
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|         SimpleMetaTaggers.currentTime,
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|         SimpleMetaTaggers.objectMetaInfo,
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|         SimpleMetaTaggers.noBothButLeftRight,
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|         SimpleMetaTaggers.geometryType,
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|         SimpleMetaTaggers.levels,
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|     ]
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|     public static readonly lazyTags: string[] = [].concat(
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|         ...SimpleMetaTaggers.metatags.filter((tagger) => tagger.isLazy).map((tagger) => tagger.keys)
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|     )
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| 
 | |
|     /**
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|      * Edits the given object to rewrite 'both'-tagging into a 'left-right' tagging scheme.
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|      * These changes are performed in-place.
 | |
|      *
 | |
|      * Returns 'true' is at least one change has been made
 | |
|      * @param tags
 | |
|      */
 | |
|     public static removeBothTagging(tags: any): boolean {
 | |
|         let somethingChanged = false
 | |
| 
 | |
|         /**
 | |
|          * Sets the key onto the properties (but doesn't overwrite if already existing)
 | |
|          */
 | |
|         function set(k, value) {
 | |
|             if (tags[k] === undefined || tags[k] === "") {
 | |
|                 tags[k] = value
 | |
|                 somethingChanged = true
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         if (tags["sidewalk"]) {
 | |
|             const v = tags["sidewalk"]
 | |
|             switch (v) {
 | |
|                 case "none":
 | |
|                 case "no":
 | |
|                     set("sidewalk:left", "no")
 | |
|                     set("sidewalk:right", "no")
 | |
|                     break
 | |
|                 case "both":
 | |
|                     set("sidewalk:left", "yes")
 | |
|                     set("sidewalk:right", "yes")
 | |
|                     break
 | |
|                 case "left":
 | |
|                     set("sidewalk:left", "yes")
 | |
|                     set("sidewalk:right", "no")
 | |
|                     break
 | |
|                 case "right":
 | |
|                     set("sidewalk:left", "no")
 | |
|                     set("sidewalk:right", "yes")
 | |
|                     break
 | |
|                 default:
 | |
|                     set("sidewalk:left", v)
 | |
|                     set("sidewalk:right", v)
 | |
|                     break
 | |
|             }
 | |
|             delete tags["sidewalk"]
 | |
|             somethingChanged = true
 | |
|         }
 | |
| 
 | |
|         const regex = /\([^:]*\):both:\(.*\)/
 | |
|         for (const key in tags) {
 | |
|             const v = tags[key]
 | |
|             if (key.endsWith(":both")) {
 | |
|                 const strippedKey = key.substring(0, key.length - ":both".length)
 | |
|                 set(strippedKey + ":left", v)
 | |
|                 set(strippedKey + ":right", v)
 | |
|                 delete tags[key]
 | |
|                 continue
 | |
|             }
 | |
| 
 | |
|             const match = key.match(regex)
 | |
|             if (match !== null) {
 | |
|                 const strippedKey = match[1]
 | |
|                 const property = match[1]
 | |
|                 set(strippedKey + ":left:" + property, v)
 | |
|                 set(strippedKey + ":right:" + property, v)
 | |
|                 console.log("Left-right rewritten " + key)
 | |
|                 delete tags[key]
 | |
|             }
 | |
|         }
 | |
| 
 | |
|         return somethingChanged
 | |
|     }
 | |
| 
 | |
|     public static HelpText(): BaseUIElement {
 | |
|         const subElements: (string | BaseUIElement)[] = [
 | |
|             new Combine([
 | |
|                 "Metatags are extra tags available, in order to display more data or to give better questions.",
 | |
|                 "They are calculated automatically on every feature when the data arrives in the webbrowser. This document gives an overview of the available metatags.",
 | |
|                 "**Hint:** when using metatags, add the [query parameter](URL_Parameters.md) `debug=true` to the URL. This will include a box in the popup for features which shows all the properties of the object",
 | |
|             ]).SetClass("flex-col"),
 | |
|         ]
 | |
| 
 | |
|         subElements.push(new Title("Metatags calculated by MapComplete", 2))
 | |
|         subElements.push(
 | |
|             new FixedUiElement(
 | |
|                 "The following values are always calculated, by default, by MapComplete and are available automatically on all elements in every theme"
 | |
|             )
 | |
|         )
 | |
|         for (const metatag of SimpleMetaTaggers.metatags) {
 | |
|             subElements.push(
 | |
|                 new Title(metatag.keys.join(", "), 3),
 | |
|                 metatag.doc,
 | |
|                 metatag.isLazy ? "This is a lazy metatag and is only calculated when needed" : ""
 | |
|             )
 | |
|         }
 | |
| 
 | |
|         return new Combine(subElements).SetClass("flex-col")
 | |
|     }
 | |
| }
 |