forked from MapComplete/MapComplete
88 lines
2.9 KiB
TypeScript
88 lines
2.9 KiB
TypeScript
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import Script from "./Script"
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import { Utils } from "../Utils"
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import { FeatureCollection } from "geojson"
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import fs from "fs"
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class DownloadEli extends Script {
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constructor() {
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super("Downloads a fresh copy of the editor layer index, removes all unnecessary data.")
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}
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async main(args: string[]): Promise<void> {
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const url = "https://osmlab.github.io/editor-layer-index/imagery.geojson"
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// Target should use '.json' instead of '.geojson', as the latter cannot be imported by the build systems
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const target = args[0] ?? "assets/editor-layer-index.json"
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const eli = <FeatureCollection>await Utils.downloadJson(url)
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const keptLayers = []
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console.log("Got", eli.features.length, "ELI-entries")
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for (let layer of eli.features) {
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const props = layer.properties
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if (props.type === "bing") {
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// A lot of work to implement - see https://github.com/pietervdvn/MapComplete/issues/648
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continue
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}
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if (props.id === "MAPNIK") {
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// Already added by default
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continue
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}
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if (props.overlay) {
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continue
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}
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if (props.url.toLowerCase().indexOf("apikey") > 0) {
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continue
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}
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if (props.permission_url === "no") {
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continue
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}
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if (props.max_zoom < 19) {
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// We want users to zoom to level 19 when adding a point
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// If they are on a layer which hasn't enough precision, they can not zoom far enough. This is confusing, so we don't use this layer
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continue
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}
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if (props.name === undefined) {
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console.warn("Editor layer index: name not defined on ", props)
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continue
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}
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const keptKeys = [
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"name",
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"id",
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"url",
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"attribution",
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"type",
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"category",
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"min_zoom",
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"max_zoom",
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"best",
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"default",
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"tile-size",
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]
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layer.properties = {}
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for (const keptKey of keptKeys) {
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if (props[keptKey]) {
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layer.properties[keptKey] = props[keptKey]
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}
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}
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layer = { properties: layer.properties, type: layer.type, geometry: layer.geometry }
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keptLayers.push(layer)
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}
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const contents =
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'{"type":"FeatureCollection",\n "features": [\n' +
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keptLayers.map((l) => JSON.stringify(l)).join(",\n") +
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"\n]}"
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fs.writeFileSync(target, contents, { encoding: "utf8" })
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console.log("Written", keptLayers.length + ", entries to the ELI")
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}
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}
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new DownloadEli().run()
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