Add better relation support

Customizations/JSON/LayerConfigJson.ts

@@ -130,8 +130,11 @@ export interface LayerConfigJson {
      */
     rotation?: string | TagRenderingConfigJson;
     /**
-     * A HTML-fragment that is shown at the center of the icon, for example: 
+     * A HTML-fragment that is shown below the icon, for example: 
      * <div style="background: white; display: block">{name}</div>
+     * 
+     * If the icon is undefined, then the label is shown in the center of the feature.
+     * Note that, if the wayhandling hides the icon then no label is shown as well.
      */
     label?: string | TagRenderingConfigJson ;
     

Customizations/JSON/TagRenderingConfig.ts

@@ -77,7 +77,8 @@ export default class TagRenderingConfig {
                 throw `Freeform.key is undefined or the empty string - this is not allowed; either fill out something or remove the freeform block alltogether. Error in ${context}`
             }
             if (ValidatedTextField.AllTypes[this.freeform.type] === undefined) {
-                throw `Freeform.key ${this.freeform.key} is an invalid type`
+                const knownKeys = ValidatedTextField.tpList.map(tp => tp.name).join(", ");
+                throw `Freeform.key ${this.freeform.key} is an invalid type. Known keys are ${knownKeys}`
             }
             if (this.freeform.addExtraTags) {
                 const usedKeys = new And(this.freeform.addExtraTags).usedKeys();
@@ -204,7 +205,7 @@ export default class TagRenderingConfig {
             return true;
         }
         if (this.multiAnswer) {
-            for (const m of this.mappings) {
+            for (const m of this.mappings ?? []) {
                 if (TagUtils.MatchesMultiAnswer(m.if, tags)) {
                     return true;
                 }

Docs/CalculatedTags.md

@@ -53,6 +53,7 @@ The above code will be executed for every feature in the layer. The feature is a
 *   distanceTo
 *   overlapWith
 *   closest
+*   memberships
 
 ### distanceTo
 
@@ -72,3 +73,7 @@ Gives a list of features from the specified layer which this feature overlaps wi
 Given either a list of geojson features or a single layer name, gives the single object which is nearest to the feature. In the case of ways/polygons, only the centerpoint is considered.
 
 *   list of features
+
+### memberships
+
+Gives a list of {role: string, relation: Relation}-objects, containing all the relations that this feature is part of. For example: \`\_part\_of\_walking\_routes=feat.memberships().map(r => r.relation.tags.name).join(';')\`

Logic/ExtraFunction.ts

@@ -1,6 +1,7 @@
 import {GeoOperations} from "./GeoOperations";
 import {UIElement} from "../UI/UIElement";
 import Combine from "../UI/Base/Combine";
+import State from "../State";
 
 export class ExtraFunction {
 
@@ -35,7 +36,7 @@ The above code will be executed for every feature in the layer. The feature is a
 Some advanced functions are available on <b>feat</b> as well:
 
 `
-    private static OverlapFunc = new ExtraFunction(
+    private static readonly OverlapFunc = new ExtraFunction(
         "overlapWith",
         "Gives a list of features from the specified layer which this feature overlaps with, the amount of overlap in m². The returned value is <b>{ feat: GeoJSONFeature, overlap: number}</b>",
         ["...layerIds - one or more layer ids  of the layer from which every feature is checked for overlap)"],
@@ -56,7 +57,7 @@ Some advanced functions are available on <b>feat</b> as well:
             }
         }
     )
-    private static DistanceToFunc = new ExtraFunction(
+    private static readonly DistanceToFunc = new ExtraFunction(
         "distanceTo",
         "Calculates the distance between the feature and a specified point",
         ["longitude", "latitude"],
@@ -75,7 +76,7 @@ Some advanced functions are available on <b>feat</b> as well:
         }
     )
 
-    private static ClosestObjectFunc = new ExtraFunction(
+    private static readonly ClosestObjectFunc = new ExtraFunction(
         "closest",
         "Given either a list of geojson features or a single layer name, gives the single object which is nearest to the feature. In the case of ways/polygons, only the centerpoint is considered.",
         ["list of features"],
@@ -113,7 +114,19 @@ Some advanced functions are available on <b>feat</b> as well:
     )
 
 
-    private static readonly allFuncs: ExtraFunction[] = [ExtraFunction.DistanceToFunc, ExtraFunction.OverlapFunc, ExtraFunction.ClosestObjectFunc];
+    private static readonly Memberships = new ExtraFunction(
+        "memberships",
+        "Gives a list of {role: string, relation: Relation}-objects, containing all the relations that this feature is part of. \n\nFor example: `_part_of_walking_routes=feat.memberships().map(r => r.relation.tags.name).join(';')`",
+        [],
+        (featuresPerLayer, feature) => {
+            return () => {
+               return State.state.knownRelations.data?.get(feature.id) ?? [];
+            }
+
+        }
+    )
+
+    private static readonly allFuncs: ExtraFunction[] = [ExtraFunction.DistanceToFunc, ExtraFunction.OverlapFunc, ExtraFunction.ClosestObjectFunc, ExtraFunction.Memberships];
     private readonly _name: string;
     private readonly _args: string[];
     private readonly _doc: string;

Logic/FeatureSource/FeaturePipeline.ts

@@ -12,6 +12,7 @@ import LayoutConfig from "../../Customizations/JSON/LayoutConfig";
 import Loc from "../../Models/Loc";
 import GeoJsonSource from "./GeoJsonSource";
 import MetaTaggingFeatureSource from "./MetaTaggingFeatureSource";
+import RegisteringFeatureSource from "./RegisteringFeatureSource";
 
 export default class FeaturePipeline implements FeatureSource {
 
@@ -24,33 +25,38 @@ export default class FeaturePipeline implements FeatureSource {
                 locationControl: UIEventSource<Loc>) {
 
         const amendedOverpassSource =
-            new RememberingSource(new FeatureDuplicatorPerLayer(flayers,
+            new RememberingSource(
-                new LocalStorageSaver(updater, layout))
+                new LocalStorageSaver(
-            );
+                    new MetaTaggingFeatureSource( // first we metatag, then we save to get the metatags into storage too
+                        new RegisteringFeatureSource(
+                            new FeatureDuplicatorPerLayer(flayers,
+                                updater)
+                        )), layout));
 
         const geojsonSources: GeoJsonSource [] = []
         for (const flayer of flayers.data) {
             const sourceUrl = flayer.layerDef.source.geojsonSource
             if (sourceUrl !== undefined) {
-                geojsonSources.push(
+                geojsonSources.push(new RegisteringFeatureSource(new FeatureDuplicatorPerLayer(flayers,
-                    new GeoJsonSource(flayer.layerDef.id, sourceUrl))
+                    new GeoJsonSource(flayer.layerDef.id, sourceUrl))))
             }
         }
 
         const amendedLocalStorageSource =
-            new RememberingSource(new FeatureDuplicatorPerLayer(flayers, new LocalStorageSource(layout))
+            new RememberingSource(new RegisteringFeatureSource(new FeatureDuplicatorPerLayer(flayers, new LocalStorageSource(layout))
-            );
+            ));
 
-        newPoints = new FeatureDuplicatorPerLayer(flayers, newPoints);
+        newPoints = new MetaTaggingFeatureSource(new FeatureDuplicatorPerLayer(flayers,
+            new RegisteringFeatureSource(newPoints)));
 
         const merged =
-            new MetaTaggingFeatureSource(
+
             new FeatureSourceMerger([
                 amendedOverpassSource,
                 amendedLocalStorageSource,
                 newPoints,
                 ...geojsonSources
-                ]));
+            ]);
 
         const source =
             new WayHandlingApplyingFeatureSource(flayers,

Logic/FeatureSource/MetaTaggingFeatureSource.ts

@@ -16,10 +16,6 @@ export default class MetaTaggingFeatureSource implements FeatureSource {
                 featuresFreshness.forEach(featureFresh => {
                     const feature = featureFresh.feature;
                     
-                    if(!State.state.allElements.has(feature.properties.id)){
-                        State.state.allElements.addOrGetElement(feature)
-                    }
-                    
                     if (Hash.hash.data === feature.properties.id) {
                         State.state.selectedElement.setData(feature);
                     }

Logic/FeatureSource/RegisteringFeatureSource.ts

@@ -0,0 +1,19 @@
+import FeatureSource from "./FeatureSource";
+import {UIEventSource} from "../UIEventSource";
+import State from "../../State";
+
+export default class RegisteringFeatureSource implements FeatureSource {
+    features: UIEventSource<{ feature: any; freshness: Date }[]>;
+
+    constructor(source: FeatureSource) {
+        this.features = source.features;
+        this.features.addCallbackAndRun(features => {
+            for (const feature of features ?? []) {
+                if (!State.state.allElements.has(feature.feature.properties.id)) {
+                    State.state.allElements.addOrGetElement(feature.feature)
+                }
+            }
+        })
+    }
+
+}

Logic/GeoOperations.ts

@@ -1,4 +1,4 @@
-import * as turf from 'turf'
+import * as turf from '@turf/turf'
 
 export class GeoOperations {
 
@@ -118,6 +118,9 @@ export class GeoOperations {
         return inside;
     };
 
+    static lengthInMeters(feature: any) {
+        return turf.length(feature) * 1000
+    }
 }
 
 

Logic/Osm/ExtractRelations.ts

@@ -0,0 +1,58 @@
+import State from "../../State";
+
+export interface Relation {
+    id: number,
+    type: "relation"
+    members: {
+        type: ("way" | "node" | "relation"),
+        ref: number,
+        role: string
+    }[],
+    tags: any,
+    // Alias for tags; tags == properties
+    properties: any
+}
+
+export default class ExtractRelations {
+
+    public static RegisterRelations(overpassJson: any) : void{
+        const memberships = ExtractRelations.BuildMembershipTable(ExtractRelations.GetRelationElements(overpassJson))
+        console.log("Assigned memberships: ", memberships)
+        State.state.knownRelations.setData(memberships)
+    }
+    
+    private static GetRelationElements(overpassJson: any): Relation[] {
+        const relations = overpassJson.elements.filter(element => element.type === "relation")
+        for (const relation of relations) {
+            relation.properties = relation.tags
+        }
+        return relations
+    }
+
+    /**
+     * Build a mapping of {memberId --> {role in relation, id of relation} }
+     * @param relations
+     * @constructor
+     */
+    private static BuildMembershipTable(relations: Relation[]): Map<string, { role: string, relation: Relation, }[]> {
+        const memberships = new Map<string, { role: string, relation: Relation }[]>()
+
+        for (const relation of relations) {
+            for (const member of relation.members) {
+
+                const role = {
+                    role: member.role,
+                    relation: relation
+                }
+                const key = member.type + "/" + member.ref
+                if (!memberships.has(key)) {
+                    memberships.set(key, [])
+                }
+                memberships.get(key).push(role)
+            }
+        }
+
+        return memberships
+    }
+
+}

Logic/Osm/Overpass.ts

@@ -1,7 +1,8 @@
 import * as $ from "jquery"
 import * as OsmToGeoJson from "osmtogeojson";
 import Bounds from "../../Models/Bounds";
-import {TagsFilter} from "../TagsFilter";
+import {TagsFilter} from "../Tags/TagsFilter";
+import ExtractRelations from "./ExtractRelations";
 
 /**
  * Interfaces overpass to get all the latest data
@@ -38,9 +39,9 @@ export class Overpass {
                     return;
                 }
 
+                ExtractRelations.RegisterRelations(json)
                 // @ts-ignore
                 const geojson = OsmToGeoJson.default(json);
-                console.log("Received geojson", geojson)
                 const osmTime = new Date(json.osm3s.timestamp_osm_base);
                 continuation(geojson, osmTime);
 

Logic/SimpleMetaTagger.ts

@@ -52,6 +52,18 @@ export default class SimpleMetaTagger {
             feature.area = sqMeters;
         })
     );
+    
+    private static lngth = new SimpleMetaTagger(
+        ["_length", "_length:km"], "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",
+        (feature => {
+            const l = GeoOperations.lengthInMeters(feature)
+            feature.properties["_length"] = "" + l
+            const km = Math.floor(l / 1000)
+            const kmRest = Math.round((l - km * 1000) / 100)
+            feature.properties["_length:km"] = "" + km+ "." + kmRest
+        })
+    )
+    
     private static country = new SimpleMetaTagger(
         ["_country"], "The country code of the property (with latlon2country)",
         feature => {
@@ -294,6 +306,7 @@ export default class SimpleMetaTagger {
     public static metatags = [
         SimpleMetaTagger.latlon,
         SimpleMetaTagger.surfaceArea,
+        SimpleMetaTagger.lngth,
         SimpleMetaTagger.country,
         SimpleMetaTagger.isOpen,
         SimpleMetaTagger.carriageWayWidth,

Models/Constants.ts

@@ -2,7 +2,7 @@ import { Utils } from "../Utils";
 
 export default class Constants {
     
-    public static vNumber = "0.6.8c";
+    public static vNumber = "0.6.9";
 
     // The user journey states thresholds when a new feature gets unlocked
     public static userJourney = {

State.ts

@@ -17,6 +17,7 @@ import UpdateFromOverpass from "./Logic/Actors/UpdateFromOverpass";
 import LayerConfig from "./Customizations/JSON/LayerConfig";
 import TitleHandler from "./Logic/Actors/TitleHandler";
 import PendingChangesUploader from "./Logic/Actors/PendingChangesUploader";
+import {Relation} from "./Logic/Osm/ExtractRelations";
 
 /**
  * Contains the global state: a bunch of UI-event sources
@@ -76,6 +77,11 @@ export default class State {
      */
     public readonly selectedElement = new UIEventSource<any>(undefined, "Selected element")
 
+    /**
+     * Keeps track of relations: which way is part of which other way?
+     * Set by the overpass-updater; used in the metatagging
+     */
+    public readonly knownRelations = new UIEventSource<Map<string, {role: string, relation: Relation}[]>>(undefined, "Relation memberships")
 
     public readonly featureSwitchUserbadge: UIEventSource<boolean>;
     public readonly featureSwitchSearch: UIEventSource<boolean>;

UI/Popup/TagRenderingAnswer.ts

@@ -46,7 +46,7 @@ export default class TagRenderingAnswer extends UIElement {
         if (this._configuration.multiAnswer) {
             
             let freeformKeyUsed = this._configuration.freeform?.key === undefined; // If it is undefined, it is "used" already, or at least we don't have to check for it anymore
-            const applicableThens: Translation[] = Utils.NoNull(this._configuration.mappings.map(mapping => {
+            const applicableThens: Translation[] = Utils.NoNull(this._configuration.mappings?.map(mapping => {
                 if (mapping.if === undefined) {
                     return mapping.then;
                 }
@@ -59,7 +59,7 @@ export default class TagRenderingAnswer extends UIElement {
                     return mapping.then;
                 }
                 return undefined;
-            }))
+            }) ?? [])
 
             if (!freeformKeyUsed
                 && tags[this._configuration.freeform.key] !== undefined) {

assets/themes/speelplekken/speelplekken.json

@@ -27,10 +27,126 @@
     "play_forest",
     "playground",
     "sport_pitch",
-    "slow_roads",
+    { "builtin": "slow_roads",
+      "override": {
+        "calculatedTags": [
+          "_part_of_walking_routes=feat.memberships().map(r => \"<a href='#relation/\"+r.relation.id+\"'>\" + r.relation.tags.name + \"</a>\").join(', ')"
+        ]
+      }
+    },
     "grass_in_parks",
-    "village_green"
+    "village_green",
+    {
+      "id": "walking_routes",
+      "name": {
+        "nl": "Wandelroutes van provincie Antwerpen"
+      },
+      "description": "Walking routes by 'provincie Antwerpen'",
+      "source": {
+        "osmTags": {
+          "and": [
+            "type=route",
+            "route=foot",
+            "operator=provincie Antwerpen"
+          ]
+        }
+      },
+      "title": {
+        "render": "Wandeling <i>{name}</i>",
+        "mappings": [
+          {
+            "if": "name~.*wandeling.*",
+            "then": "{name}"
+          }
+        ]
+      },
+      "tagRenderings": [
+        {
+          "render": {
+            "nl": "Deze wandeling is <b>{_length:km}km</b> lang"
+          }
+        },
+        {
+          "mappings": [
+            {
+              "if": "route=iwn",
+              "then": {
+                "nl": "Dit is een internationale wandelroute"
+              }
+            },
+            {
+              "if": "route=nwn",
+              "then": {
+                "nl": "Dit is een nationale wandelroute"
+              }
+            },
+            {
+              "if": "route=rwn",
+              "then": {
+                "nl": "Dit is een regionale wandelroute"
+              }
+            },
+            {
+              "if": "route=lwn",
+              "then": {
+                "nl": "Dit is een lokale wandelroute"
+              }
+            }
+          ]
+        },
+        {
+          "render": {
+            "nl": "<h3>Korte beschrijving:</h3>{description}"
+          },
+          "question": "Geef een korte beschrijving van de wandeling (max 255 tekens)",
+          "freeform": {
+            "key": "description",
+            "type": "text"
+          }
+        },
+        {
+          "question": {
+            "nl": "Wie beheert deze wandeling en plaatst dus de signalisatiebordjes?"
+          },
+          "render": "Signalisatie geplaatst door {operator}",
+          "freeform":{
+            "key": "operator"
+          }
+        },
+        {
+          "question": {
+            "nl": "Naar wie kan men emailen bij problemen rond signalisatie?"
+          },
+          "render": {
+            "nl": "Bij problemen met signalisatie kan men emailen naar <a href='mailto:{operator:email}'>{operator:email}</a>"
+          },
+          "freeform": {
+            "key": "operator:email",
+            "type": "email"
+          }
+        },
+        "questions",
+        "reviews"
+      ],
+      "color": {
+        "render": "#6d6",
+        "mappings":[
+          {
+            "if": "color~*",
+            "then": "{color}"
+          }
+        ]
+      },
+      "width": {
+        "render": "3"
+      }
+    }
 
   ],
-  "roamingRenderings": []
+  "roamingRenderings": [
+    {
+      "render": "Maakt deel uit van {_part_of_walking_routes}",
+      "condition": "_part_of_walking_routes~*"
+    }
+  ]
 }

package.json

@@ -38,7 +38,11 @@
   "dependencies": {
     "@babel/preset-env": "7.13.8",
     "@tailwindcss/postcss7-compat": "^2.0.2",
+    "@turf/buffer": "^6.3.0",
+    "@turf/collect": "^6.3.0",
     "@turf/distance": "^6.3.0",
+    "@turf/length": "^6.3.0",
+    "@turf/turf": "^6.3.0",
     "@types/jquery": "^3.5.5",
     "@types/leaflet-markercluster": "^1.0.3",
     "@types/leaflet-providers": "^1.2.0",