mapcomplete/Models/ThemeConfig/Conversion/PrepareLayer.ts

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TypeScript

import {Concat, Conversion, DesugaringContext, DesugaringStep, Each, FirstOf, Fuse, On, SetDefault} from "./Conversion";
import {LayerConfigJson} from "../Json/LayerConfigJson";
import {TagRenderingConfigJson} from "../Json/TagRenderingConfigJson";
import {Utils} from "../../../Utils";
import RewritableConfigJson from "../Json/RewritableConfigJson";
import SpecialVisualizations from "../../../UI/SpecialVisualizations";
import Translations from "../../../UI/i18n/Translations";
import {Translation} from "../../../UI/i18n/Translation";
import * as tagrenderingconfigmeta from "../../../assets/tagrenderingconfigmeta.json"
import {AddContextToTranslations} from "./AddContextToTranslations";
class ExpandTagRendering extends Conversion<string | TagRenderingConfigJson | { builtin: string | string[], override: any }, TagRenderingConfigJson[]> {
private readonly _state: DesugaringContext;
private readonly _self: LayerConfigJson;
constructor(state: DesugaringContext, self: LayerConfigJson) {
super("Converts a tagRenderingSpec into the full tagRendering, e.g. by substituting the tagRendering by the shared-question", [], "ExpandTagRendering");
this._state = state;
this._self = self;
}
convert(json: string | TagRenderingConfigJson | { builtin: string | string[]; override: any }, context: string): { result: TagRenderingConfigJson[]; errors: string[]; warnings: string[] } {
const errors = []
const warnings = []
return {
result: this.convertUntilStable(json, warnings, errors, context),
errors, warnings
};
}
private lookup(name: string): TagRenderingConfigJson[] {
const state = this._state;
if (state.tagRenderings.has(name)) {
return [state.tagRenderings.get(name)]
}
if (name.indexOf(".") < 0) {
return undefined;
}
const spl = name.split(".");
let layer = state.sharedLayers.get(spl[0])
if (spl[0] === this._self.id) {
layer = this._self
}
if (spl.length !== 2 || layer === undefined) {
return undefined
}
const id = spl[1];
const layerTrs = <TagRenderingConfigJson[]>layer.tagRenderings.filter(tr => tr["id"] !== undefined)
let matchingTrs: TagRenderingConfigJson[]
if (id === "*") {
matchingTrs = layerTrs
} else if (id.startsWith("*")) {
const id_ = id.substring(1)
matchingTrs = layerTrs.filter(tr => tr.group === id_ || tr.labels?.indexOf(id_) >= 0)
} else {
matchingTrs = layerTrs.filter(tr => tr.id === id)
}
const contextWriter = new AddContextToTranslations<TagRenderingConfigJson>("layers:")
for (let i = 0; i < matchingTrs.length; i++) {
// The matched tagRenderings are 'stolen' from another layer. This means that they must match the layer condition before being shown
let found: TagRenderingConfigJson = Utils.Clone(matchingTrs[i]);
if (found.condition === undefined) {
found.condition = layer.source.osmTags
} else {
found.condition = {and: [found.condition, layer.source.osmTags]}
}
found = contextWriter.convertStrict(found, layer.id + ".tagRenderings." + found["id"])
matchingTrs[i] = found
}
if (matchingTrs.length !== 0) {
return matchingTrs
}
return undefined;
}
private convertOnce(tr: string | any, warnings: string[], errors: string[], ctx: string): TagRenderingConfigJson[] {
const state = this._state
if (tr === "questions") {
return [{
id: "questions"
}]
}
if (typeof tr === "string") {
const lookup = this.lookup(tr);
if (lookup === undefined) {
const isTagRendering = ctx.indexOf("On(mapRendering") < 0
if (isTagRendering) {
warnings.push(ctx + "A literal rendering was detected: " + tr)
}
return [{
render: tr,
id: tr.replace(/[^a-zA-Z0-9]/g, "")
}]
}
return lookup
}
if (tr["builtin"] !== undefined) {
let names: string | string[] = tr["builtin"]
if (typeof names === "string") {
names = [names]
}
for (const key of Object.keys(tr)) {
if (key === "builtin" || key === "override" || key === "id" || key.startsWith("#")) {
continue
}
errors.push("At " + ctx + ": an object calling a builtin can only have keys `builtin` or `override`, but a key with name `" + key + "` was found. This won't be picked up! The full object is: " + JSON.stringify(tr))
}
const trs: TagRenderingConfigJson[] = []
for (const name of names) {
const lookup = this.lookup(name)
if (lookup === undefined) {
let candidates = Array.from(state.tagRenderings.keys())
if (name.indexOf(".") > 0) {
const [layerName, search] = name.split(".")
let layer = state.sharedLayers.get(layerName)
if (layerName === this._self.id) {
layer = this._self;
}
if (layer === undefined) {
const candidates = Utils.sortedByLevenshteinDistance(layerName, Array.from(state.sharedLayers.keys()), s => s)
if(state.sharedLayers.size === 0){
warnings.push(ctx + ": BOOTSTRAPPING. Rerun generate layeroverview. While reusing tagrendering: " + name + ": layer " + layerName + " not found. Maybe you meant on of " + candidates.slice(0, 3).join(", "))
}else{
errors.push(ctx + ": While reusing tagrendering: " + name + ": layer " + layerName + " not found. Maybe you meant on of " + candidates.slice(0, 3).join(", "))
}
continue
}
candidates = Utils.NoNull(layer.tagRenderings.map(tr => tr["id"])).map(id => layerName + "." + id)
}
candidates = Utils.sortedByLevenshteinDistance(name, candidates, i => i);
errors.push(ctx + ": The tagRendering with identifier " + name + " was not found.\n\tDid you mean one of " + candidates.join(", ") + "?")
continue
}
for (let foundTr of lookup) {
foundTr = Utils.Clone<any>(foundTr)
Utils.Merge(tr["override"] ?? {}, foundTr)
trs.push(foundTr)
}
}
return trs;
}
return [tr]
}
private convertUntilStable(spec: string | any, warnings: string[], errors: string[], ctx: string): TagRenderingConfigJson[] {
const trs = this.convertOnce(spec, warnings, errors, ctx);
const result = []
for (const tr of trs) {
if (typeof tr === "string" || tr["builtin"] !== undefined) {
const stable = this.convertUntilStable(tr, warnings, errors, ctx + "(RECURSIVE RESOLVE)")
result.push(...stable)
} else {
result.push(tr)
}
}
return result;
}
}
export class ExpandRewrite<T> extends Conversion<T | RewritableConfigJson<T>, T[]> {
constructor() {
super("Applies a rewrite", [], "ExpandRewrite");
}
/**
* Used for left|right group creation and replacement.
* Every 'keyToRewrite' will be replaced with 'target' recursively. This substitution will happen in place in the object 'tr'
*
* // should substitute strings
* const spec = {
* "someKey": "somevalue {xyz}"
* }
* ExpandRewrite.RewriteParts("{xyz}", "rewritten", spec) // => {"someKey": "somevalue rewritten"}
*
* // should substitute all occurances in strings
* const spec = {
* "someKey": "The left|right side has {key:left|right}"
* }
* ExpandRewrite.RewriteParts("left|right", "left", spec) // => {"someKey": "The left side has {key:left}"}
*
*/
public static RewriteParts<T>(keyToRewrite: string, target: string | any, tr: T): T {
const targetIsTranslation = Translations.isProbablyATranslation(target)
function replaceRecursive(obj: string | any, target) {
if (obj === keyToRewrite) {
return target
}
if (typeof obj === "string") {
// This is a simple string - we do a simple replace
while (obj.indexOf(keyToRewrite) >= 0) {
obj = obj.replace(keyToRewrite, target)
}
return obj
}
if (Array.isArray(obj)) {
// This is a list of items
return obj.map(o => replaceRecursive(o, target))
}
if (typeof obj === "object") {
obj = {...obj}
const isTr = targetIsTranslation && Translations.isProbablyATranslation(obj)
for (const key in obj) {
let subtarget = target
if (isTr && target[key] !== undefined) {
// The target is a translation AND the current object is a translation
// This means we should recursively replace with the translated value
subtarget = target[key]
}
obj[key] = replaceRecursive(obj[key], subtarget)
}
return obj
}
return obj
}
return replaceRecursive(tr, target)
}
/**
* // should convert simple strings
* const spec = <RewritableConfigJson<string>>{
* rewrite: {
* sourceString: ["xyz","abc"],
* into: [
* ["X", "A"],
* ["Y", "B"],
* ["Z", "C"]],
* },
* renderings: "The value of xyz is abc"
* }
* new ExpandRewrite().convertStrict(spec, "test") // => ["The value of X is A", "The value of Y is B", "The value of Z is C"]
*
* // should rewrite with translations
* const spec = <RewritableConfigJson<any>>{
* rewrite: {
* sourceString: ["xyz","abc"],
* into: [
* ["X", {en: "value", nl: "waarde"}],
* ["Y", {en: "some other value", nl: "een andere waarde"}],
* },
* renderings: {en: "The value of xyz is abc", nl: "De waarde van xyz is abc"}
* }
* const expected = [
* {
* en: "The value of X is value",
* nl: "De waarde van X is waarde"
* },
* {
* en: "The value of Y is some other value",
* nl: "De waarde van Y is een andere waarde"
* }
* ]
* new ExpandRewrite().convertStrict(spec, "test") // => expected
*/
convert(json: T | RewritableConfigJson<T>, context: string): { result: T[]; errors?: string[]; warnings?: string[]; information?: string[] } {
if (json === null || json === undefined) {
return {result: []}
}
if (json["rewrite"] === undefined) {
// not a rewrite
return {result: [(<T>json)]}
}
const rewrite = <RewritableConfigJson<T>>json;
const keysToRewrite = rewrite.rewrite
const ts: T[] = []
{// sanity check: rewrite: ["xyz", "longer_xyz"] is not allowed as "longer_xyz" will never be triggered
for (let i = 0; i < keysToRewrite.sourceString.length; i++) {
const guard = keysToRewrite.sourceString[i];
for (let j = i + 1; j < keysToRewrite.sourceString.length; j++) {
const toRewrite = keysToRewrite.sourceString[j]
if (toRewrite.indexOf(guard) >= 0) {
throw `${context} Error in rewrite: sourcestring[${i}] is a substring of sourcestring[${j}]: ${guard} will be substituted away before ${toRewrite} is reached.`
}
}
}
}
{// sanity check: {rewrite: ["a", "b"] should have the right amount of 'intos' in every case
for (let i = 0; i < rewrite.rewrite.into.length; i++) {
const into = keysToRewrite.into[i]
if (into.length !== rewrite.rewrite.sourceString.length) {
throw `${context}.into.${i} Error in rewrite: there are ${rewrite.rewrite.sourceString.length} keys to rewrite, but entry ${i} has only ${into.length} values`
}
}
}
for (let i = 0; i < keysToRewrite.into.length; i++) {
let t = Utils.Clone(rewrite.renderings)
for (let j = 0; j < keysToRewrite.sourceString.length; j++) {
const key = keysToRewrite.sourceString[j];
const target = keysToRewrite.into[i][j]
t = ExpandRewrite.RewriteParts(key, target, t)
}
ts.push(t)
}
return {result: ts};
}
}
/**
* Converts a 'special' translation into a regular translation which uses parameters
*/
export class RewriteSpecial extends DesugaringStep<TagRenderingConfigJson> {
constructor() {
super("Converts a 'special' translation into a regular translation which uses parameters", ["special"], "RewriteSpecial");
}
/**
* Does the heavy lifting and conversion
*
* // should not do anything if no 'special'-key is present
* RewriteSpecial.convertIfNeeded({"en": "xyz", "nl": "abc"}, [], "test") // => {"en": "xyz", "nl": "abc"}
*
* // should handle a simple special case
* RewriteSpecial.convertIfNeeded({"special": {"type":"image_carousel"}}, [], "test") // => {'*': "{image_carousel()}"}
*
* // should handle special case with a parameter
* RewriteSpecial.convertIfNeeded({"special": {"type":"image_carousel", "image_key": "some_image_key"}}, [], "test") // => {'*': "{image_carousel(some_image_key)}"}
*
* // should handle special case with a translated parameter
* const spec = {"special": {"type":"image_upload", "label": {"en": "Add a picture to this object", "nl": "Voeg een afbeelding toe"}}}
* const r = RewriteSpecial.convertIfNeeded(spec, [], "test")
* r // => {"en": "{image_upload(,Add a picture to this object)}", "nl": "{image_upload(,Voeg een afbeelding toe)}" }
*
* // should handle special case with a prefix and postfix
* const spec = {"special": {"type":"image_upload" }, before: {"en": "PREFIX "}, after: {"en": " POSTFIX", nl: " Achtervoegsel"} }
* const r = RewriteSpecial.convertIfNeeded(spec, [], "test")
* r // => {"en": "PREFIX {image_upload(,)} POSTFIX", "nl": "PREFIX {image_upload(,)} Achtervoegsel" }
*
* // should warn for unexpected keys
* const errors = []
* RewriteSpecial.convertIfNeeded({"special": {type: "image_carousel"}, "en": "xyz"}, errors, "test") // => {'*': "{image_carousel()}"}
* errors // => ["At test: Unexpected key in a special block: en"]
*
* // should give an error on unknown visualisations
* const errors = []
* RewriteSpecial.convertIfNeeded({"special": {type: "qsdf"}}, errors, "test") // => undefined
* errors.length // => 1
* errors[0].indexOf("Special visualisation 'qsdf' not found") >= 0 // => true
*
* // should give an error is 'type' is missing
* const errors = []
* RewriteSpecial.convertIfNeeded({"special": {}}, errors, "test") // => undefined
* errors // => ["A 'special'-block should define 'type' to indicate which visualisation should be used"]
*/
private static convertIfNeeded(input: (object & { special: { type: string } }) | any, errors: string[], context: string): any {
const special = input["special"]
if (special === undefined) {
return input
}
for (const wrongKey of Object.keys(input).filter(k => k !== "special" && k !== "before" && k !== "after")) {
errors.push(`At ${context}: Unexpected key in a special block: ${wrongKey}`)
}
const type = special["type"]
if (type === undefined) {
errors.push("A 'special'-block should define 'type' to indicate which visualisation should be used")
return undefined
}
const vis = SpecialVisualizations.specialVisualizations.find(sp => sp.funcName === type)
if (vis === undefined) {
const options = Utils.sortedByLevenshteinDistance(type, SpecialVisualizations.specialVisualizations, sp => sp.funcName)
errors.push(`Special visualisation '${type}' not found. Did you perhaps mean ${options[0].funcName}, ${options[1].funcName} or ${options[2].funcName}?\n\tFor all known special visualisations, please see https://github.com/pietervdvn/MapComplete/blob/develop/Docs/SpecialRenderings.md`)
return undefined
}
const argNamesList = vis.args.map(a => a.name)
const argNames = new Set<string>(argNamesList)
// Check for obsolete and misspelled arguments
errors.push(...Object.keys(special)
.filter(k => !argNames.has(k))
.filter(k => k !== "type")
.map(wrongArg => {
const byDistance = Utils.sortedByLevenshteinDistance(wrongArg, argNamesList, x => x)
return `Unexpected argument with name '${wrongArg}'. Did you mean ${byDistance[0]}?\n\tAll known arguments are ${argNamesList.join(", ")}`;
}))
// Check that all obligated arguments are present. They are obligated if they don't have a preset value
for (const arg of vis.args) {
if (arg.required !== true) {
continue;
}
const param = special[arg.name]
if (param === undefined) {
errors.push(`Obligated parameter '${arg.name}' not found`)
}
}
const foundLanguages = new Set<string>()
const translatedArgs = argNamesList.map(nm => special[nm])
.filter(v => v !== undefined)
.filter(v => Translations.isProbablyATranslation(v))
for (const translatedArg of translatedArgs) {
for (const ln of Object.keys(translatedArg)) {
foundLanguages.add(ln)
}
}
const before = Translations.T(input.before)
const after = Translations.T(input.after)
for (const ln of Object.keys(before?.translations ?? {})) {
foundLanguages.add(ln)
}
for (const ln of Object.keys(after?.translations ?? {})) {
foundLanguages.add(ln)
}
if (foundLanguages.size === 0) {
const args = argNamesList.map(nm => special[nm] ?? "").join(",")
return {
'*': `{${type}(${args})}`
}
}
const result = {}
const languages = Array.from(foundLanguages)
languages.sort()
for (const ln of languages) {
const args = []
for (const argName of argNamesList) {
const v = special[argName] ?? ""
if (Translations.isProbablyATranslation(v)) {
args.push(new Translation(v).textFor(ln))
} else {
args.push(v)
}
}
const beforeText = before?.textFor(ln) ?? ""
const afterText = after?.textFor(ln) ?? ""
result[ln] = `${beforeText}{${type}(${args.join(",")})}${afterText}`
}
return result
}
/**
* const tr = {
* render: {special: {type: "image_carousel", image_key: "image" }},
* mappings: [
* {
* if: "other_image_key",
* then: {special: {type: "image_carousel", image_key: "other_image_key"}}
* }
* ]
* }
* const result = new RewriteSpecial().convert(tr,"test").result
* const expected = {render: {'*': "{image_carousel(image)}"}, mappings: [{if: "other_image_key", then: {'*': "{image_carousel(other_image_key)}"}} ]}
* result // => expected
*
* const tr = {
* render: {special: {type: "image_carousel", image_key: "image"}, before: {en: "Some introduction"} },
* }
* const result = new RewriteSpecial().convert(tr,"test").result
* const expected = {render: {'en': "Some introduction{image_carousel(image)}"}}
* result // => expected
*/
convert(json: TagRenderingConfigJson, context: string): { result: TagRenderingConfigJson; errors?: string[]; warnings?: string[]; information?: string[] } {
const errors = []
json = Utils.Clone(json)
const paths: { path: string[], type?: any, typeHint?: string }[] = tagrenderingconfigmeta["default"] ?? tagrenderingconfigmeta
for (const path of paths) {
if (path.typeHint !== "rendered") {
continue
}
Utils.WalkPath(path.path, json, ((leaf, travelled) => RewriteSpecial.convertIfNeeded(leaf, errors, travelled.join("."))))
}
return {
result: json,
errors
};
}
}
export class PrepareLayer extends Fuse<LayerConfigJson> {
constructor(state: DesugaringContext) {
super(
"Fully prepares and expands a layer for the LayerConfig.",
new On("tagRenderings", new Each(new RewriteSpecial())),
new On("tagRenderings", new Concat(new ExpandRewrite()).andThenF(Utils.Flatten)),
new On("tagRenderings", layer => new Concat(new ExpandTagRendering(state, layer))),
new On("mapRendering", new Concat(new ExpandRewrite()).andThenF(Utils.Flatten)),
new On("mapRendering", layer => new Each(new On("icon", new FirstOf(new ExpandTagRendering(state, layer))))),
new SetDefault("titleIcons", ["defaults"]),
new On("titleIcons", layer => new Concat(new ExpandTagRendering(state, layer)))
);
}
}