forked from MapComplete/MapComplete
394 lines
16 KiB
TypeScript
394 lines
16 KiB
TypeScript
import {GeoOperations} from "./GeoOperations";
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import State from "../State";
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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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const cardinalDirections = {
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N: 0, NNE: 22.5, NE: 45, ENE: 67.5,
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E: 90, ESE: 112.5, SE: 135, SSE: 157.5,
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S: 180, SSW: 202.5, SW: 225, WSW: 247.5,
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W: 270, WNW: 292.5, NW: 315, NNW: 337.5
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}
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export default class SimpleMetaTagger {
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public static coder: any;
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public static readonly objectMetaInfo = new SimpleMetaTagger(
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{
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keys: ["_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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doc: "Information about the last edit of this object."
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},
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(feature) => {/*Note: also called by 'UpdateTagsFromOsmAPI'*/
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const tgs = feature.properties;
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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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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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private static latlon = new SimpleMetaTagger({
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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 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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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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return true;
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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`)",
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keys: ["Theme-defined keys"],
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},
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(feature => {
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const units = Utils.NoNull([].concat(...State.state?.layoutToUse?.layers?.map(layer => layer.units ?? [])));
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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)
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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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let canonical = denomination?.canonicalValue(value) ?? 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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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 country = new SimpleMetaTagger(
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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, _) => {
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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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SimpleMetaTagger.coder?.GetCountryCodeFor(lon, lat, (countries: string[]) => {
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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.state.allElements.getEventSourceById(feature.properties.id);
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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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return false;
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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", "_isOpen:description"],
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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 => {
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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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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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delete feature.properties._isOpen
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feature.properties._isOpen = undefined
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const tagsSource = State.state.allElements.getEventSourceById(feature.properties.id);
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tagsSource.addCallbackAndRunD(tags => {
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if (tags.opening_hours === undefined || tags._country === undefined) {
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return;
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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(tags["opening_hours"], {
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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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}
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}, {tag_key: "opening_hours"});
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// AUtomatically triggered on the next change
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const updateTags = () => {
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const oldValueIsOpen = tags["_isOpen"];
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const oldNextChange = tags["_isOpen:nextTrigger"] ?? 0;
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if (oldNextChange > (new Date()).getTime() &&
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tags["_isOpen:oldvalue"] === tags["opening_hours"]
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&& tags["_isOpen"] !== undefined) {
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// Already calculated and should not yet be triggered
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return false;
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}
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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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if (oldValueIsOpen !== tags._isOpen) {
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tagsSource.ping();
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}
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const nextChange = oh.getNextChange();
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if (nextChange !== undefined) {
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const timeout = nextChange.getTime() - (new Date()).getTime();
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tags["_isOpen:nextTrigger"] = nextChange.getTime();
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tags["_isOpen:oldvalue"] = tags.opening_hours
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window.setTimeout(
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() => {
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console.log("Updating the _isOpen tag for ", tags.id, ", it's timer expired after", timeout);
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updateTags();
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},
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timeout
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)
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}
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}
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updateTags();
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return true; // Our job is done, lets unregister!
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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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tags["_isOpen"] = "parse_error";
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}
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})
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return undefined
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}
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})
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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 = 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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// 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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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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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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if (typeof freshness === "string") {
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freshness = new Date(freshness)
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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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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 = [
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SimpleMetaTagger.latlon,
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SimpleMetaTagger.surfaceArea,
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SimpleMetaTagger.lngth,
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SimpleMetaTagger.canonicalize,
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SimpleMetaTagger.country,
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SimpleMetaTagger.isOpen,
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SimpleMetaTagger.directionSimplified,
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SimpleMetaTagger.currentTime,
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SimpleMetaTagger.objectMetaInfo
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];
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public static readonly lazyTags: string[] = [].concat(...SimpleMetaTagger.metatags.filter(tagger => tagger.isLazy)
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.map(tagger => tagger.keys));
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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: (feature: any, freshness: Date) => boolean;
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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(docs: { keys: string[], doc: string, includesDates?: boolean, isLazy?: boolean },
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f: ((feature: any, freshness: Date) => boolean)) {
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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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for (const key of docs.keys) {
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if (!key.startsWith('_') && key.toLowerCase().indexOf("theme") < 0) {
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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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public static HelpText(): BaseUIElement {
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const subElements: (string | BaseUIElement)[] = [
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new Combine([
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new Title("Metatags", 1),
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"Metatags are extra tags available, in order to display more data or to give better questions.",
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"The are calculated automatically on every feature when the data arrives in the webbrowser. This document gives an overview of the available metatags.",
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"**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"
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]).SetClass("flex-col")
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];
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subElements.push(new Title("Metatags calculated by MapComplete", 2))
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subElements.push(new FixedUiElement("The following values are always calculated, by default, by MapComplete and are available automatically on all elements in every theme"))
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for (const metatag of SimpleMetaTagger.metatags) {
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subElements.push(
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new Title(metatag.keys.join(", "), 3),
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metatag.doc,
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metatag.isLazy ? "This is a lazy metatag and is only calculated when needed" : ""
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)
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}
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return new Combine(subElements).SetClass("flex-col")
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}
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}
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