mapcomplete/Models/ThemeConfig/Conversion/PrepareTheme.ts

646 lines
23 KiB
TypeScript

import {
Concat,
Conversion,
DesugaringContext,
DesugaringStep,
Each,
Fuse,
On,
Pass,
SetDefault,
} from "./Conversion"
import { LayoutConfigJson } from "../Json/LayoutConfigJson"
import { PrepareLayer } from "./PrepareLayer"
import { LayerConfigJson } from "../Json/LayerConfigJson"
import { Utils } from "../../../Utils"
import Constants from "../../Constants"
import CreateNoteImportLayer from "./CreateNoteImportLayer"
import LayerConfig from "../LayerConfig"
import { TagRenderingConfigJson } from "../Json/TagRenderingConfigJson"
import DependencyCalculator from "../DependencyCalculator"
import { AddContextToTranslations } from "./AddContextToTranslations"
import ValidationUtils from "./ValidationUtils"
class SubstituteLayer extends Conversion<string | LayerConfigJson, LayerConfigJson[]> {
private readonly _state: DesugaringContext
constructor(state: DesugaringContext) {
super(
"Converts the identifier of a builtin layer into the actual layer, or converts a 'builtin' syntax with override in the fully expanded form",
[],
"SubstituteLayer"
)
this._state = state
}
convert(
json: string | LayerConfigJson,
context: string
): { result: LayerConfigJson[]; errors: string[]; information?: string[] } {
const errors = []
const information = []
const state = this._state
function reportNotFound(name: string) {
const knownLayers = Array.from(state.sharedLayers.keys())
const withDistance = knownLayers.map((lname) => [
lname,
Utils.levenshteinDistance(name, lname),
])
withDistance.sort((a, b) => a[1] - b[1])
const ids = withDistance.map((n) => n[0])
// Known builtin layers are "+.join(",")+"\n For more information, see "
errors.push(`${context}: The layer with name ${name} was not found as a builtin layer. Perhaps you meant ${ids[0]}, ${ids[1]} or ${ids[2]}?
For an overview of all available layers, refer to https://github.com/pietervdvn/MapComplete/blob/develop/Docs/BuiltinLayers.md`)
}
if (typeof json === "string") {
const found = state.sharedLayers.get(json)
if (found === undefined) {
reportNotFound(json)
return {
result: null,
errors,
}
}
return {
result: [found],
errors,
}
}
if (json["builtin"] !== undefined) {
let names = json["builtin"]
if (typeof names === "string") {
names = [names]
}
const layers = []
for (const name of names) {
const found = Utils.Clone(state.sharedLayers.get(name))
if (found === undefined) {
reportNotFound(name)
continue
}
if (
json["override"]["tagRenderings"] !== undefined &&
(found["tagRenderings"] ?? []).length > 0
) {
errors.push(
`At ${context}: when overriding a layer, an override is not allowed to override into tagRenderings. Use "+tagRenderings" or "tagRenderings+" instead to prepend or append some questions.`
)
}
try {
Utils.Merge(json["override"], found)
layers.push(found)
} catch (e) {
errors.push(
`At ${context}: could not apply an override due to: ${e}.\nThe override is: ${JSON.stringify(
json["override"]
)}`
)
}
if (json["hideTagRenderingsWithLabels"]) {
const hideLabels: Set<string> = new Set(json["hideTagRenderingsWithLabels"])
// These labels caused at least one deletion
const usedLabels: Set<string> = new Set<string>()
const filtered = []
for (const tr of found.tagRenderings) {
const labels = tr["labels"]
if (labels !== undefined) {
const forbiddenLabel = labels.findIndex((l) => hideLabels.has(l))
if (forbiddenLabel >= 0) {
usedLabels.add(labels[forbiddenLabel])
information.push(
context +
": Dropping tagRendering " +
tr["id"] +
" as it has a forbidden label: " +
labels[forbiddenLabel]
)
continue
}
}
if (hideLabels.has(tr["id"])) {
usedLabels.add(tr["id"])
information.push(
context +
": Dropping tagRendering " +
tr["id"] +
" as its id is a forbidden label"
)
continue
}
if (hideLabels.has(tr["group"])) {
usedLabels.add(tr["group"])
information.push(
context +
": Dropping tagRendering " +
tr["id"] +
" as its group `" +
tr["group"] +
"` is a forbidden label"
)
continue
}
filtered.push(tr)
}
const unused = Array.from(hideLabels).filter((l) => !usedLabels.has(l))
if (unused.length > 0) {
errors.push(
"This theme specifies that certain tagrenderings have to be removed based on forbidden layers. One or more of these layers did not match any tagRenderings and caused no deletions: " +
unused.join(", ") +
"\n This means that this label can be removed or that the original tagRendering that should be deleted does not have this label anymore"
)
}
found.tagRenderings = filtered
}
}
return {
result: layers,
errors,
information,
}
}
return {
result: [json],
errors,
}
}
}
class AddDefaultLayers extends DesugaringStep<LayoutConfigJson> {
private readonly _state: DesugaringContext
constructor(state: DesugaringContext) {
super(
"Adds the default layers, namely: " + Constants.added_by_default.join(", "),
["layers"],
"AddDefaultLayers"
)
this._state = state
}
convert(
json: LayoutConfigJson,
context: string
): { result: LayoutConfigJson; errors: string[]; warnings: string[] } {
const errors = []
const warnings = []
const state = this._state
json.layers = [...json.layers]
const alreadyLoaded = new Set(json.layers.map((l) => l["id"]))
for (const layerName of Constants.added_by_default) {
const v = state.sharedLayers.get(layerName)
if (v === undefined) {
errors.push("Default layer " + layerName + " not found")
continue
}
if (alreadyLoaded.has(v.id)) {
warnings.push(
"Layout " +
context +
" already has a layer with name " +
v.id +
"; skipping inclusion of this builtin layer"
)
continue
}
json.layers.push(v)
}
return {
result: json,
errors,
warnings,
}
}
}
class AddImportLayers extends DesugaringStep<LayoutConfigJson> {
constructor() {
super(
"For every layer in the 'layers'-list, create a new layer which'll import notes. (Note that priviliged layers and layers which have a geojson-source set are ignored)",
["layers"],
"AddImportLayers"
)
}
convert(
json: LayoutConfigJson,
context: string
): { result: LayoutConfigJson; errors?: string[]; warnings?: string[] } {
if (!(json.enableNoteImports ?? true)) {
return {
warnings: [
"Not creating a note import layers for theme " +
json.id +
" as they are disabled",
],
result: json,
}
}
const errors = []
json = { ...json }
const allLayers: LayerConfigJson[] = <LayerConfigJson[]>json.layers
json.layers = [...json.layers]
const creator = new CreateNoteImportLayer()
for (let i1 = 0; i1 < allLayers.length; i1++) {
const layer = allLayers[i1]
if (layer.source === undefined) {
// Priviliged layers are skipped
continue
}
if (layer.source["geoJson"] !== undefined) {
// Layer which don't get their data from OSM are skipped
continue
}
if (layer.title === undefined || layer.name === undefined) {
// Anonymous layers and layers without popup are skipped
continue
}
if (layer.presets === undefined || layer.presets.length == 0) {
// A preset is needed to be able to generate a new point
continue
}
try {
const importLayerResult = creator.convert(
layer,
context + ".(noteimportlayer)[" + i1 + "]"
)
if (importLayerResult.result !== undefined) {
json.layers.push(importLayerResult.result)
}
} catch (e) {
errors.push("Could not generate an import-layer for " + layer.id + " due to " + e)
}
}
return {
errors,
result: json,
}
}
}
class AddContextToTranslationsInLayout extends DesugaringStep<LayoutConfigJson> {
constructor() {
super(
"Adds context to translations, including the prefix 'themes:json.id'; this is to make sure terms in an 'overrides' or inline layer are linkable too",
["_context"],
"AddContextToTranlationsInLayout"
)
}
convert(
json: LayoutConfigJson,
context: string
): {
result: LayoutConfigJson
errors?: string[]
warnings?: string[]
information?: string[]
} {
const conversion = new AddContextToTranslations<LayoutConfigJson>("themes:")
return conversion.convert(json, json.id)
}
}
class ApplyOverrideAll extends DesugaringStep<LayoutConfigJson> {
constructor() {
super(
"Applies 'overrideAll' onto every 'layer'. The 'overrideAll'-field is removed afterwards",
["overrideAll", "layers"],
"ApplyOverrideAll"
)
}
convert(
json: LayoutConfigJson,
context: string
): { result: LayoutConfigJson; errors: string[]; warnings: string[] } {
const overrideAll = json.overrideAll
if (overrideAll === undefined) {
return { result: json, warnings: [], errors: [] }
}
json = { ...json }
delete json.overrideAll
const newLayers = []
for (let layer of json.layers) {
layer = Utils.Clone(<LayerConfigJson>layer)
Utils.Merge(overrideAll, layer)
newLayers.push(layer)
}
json.layers = newLayers
return { result: json, warnings: [], errors: [] }
}
}
class AddDependencyLayersToTheme extends DesugaringStep<LayoutConfigJson> {
private readonly _state: DesugaringContext
constructor(state: DesugaringContext) {
super(
`If a layer has a dependency on another layer, these layers are added automatically on the theme. (For example: defibrillator depends on 'walls_and_buildings' to snap onto. This layer is added automatically)
Note that these layers are added _at the start_ of the layer list, meaning that they will see _every_ feature.
Furthermore, \`passAllFeatures\` will be set, so that they won't steal away features from further layers.
Some layers (e.g. \`all_buildings_and_walls\' or \'streets_with_a_name\') are invisible, so by default, \'force_load\' is set too.
`,
["layers"],
"AddDependencyLayersToTheme"
)
this._state = state
}
private static CalculateDependencies(
alreadyLoaded: LayerConfigJson[],
allKnownLayers: Map<string, LayerConfigJson>,
themeId: string
): { config: LayerConfigJson; reason: string }[] {
const dependenciesToAdd: { config: LayerConfigJson; reason: string }[] = []
const loadedLayerIds: Set<string> = new Set<string>(alreadyLoaded.map((l) => l.id))
// Verify cross-dependencies
let unmetDependencies: {
neededLayer: string
neededBy: string
reason: string
context?: string
}[] = []
do {
const dependencies: {
neededLayer: string
reason: string
context?: string
neededBy: string
}[] = []
for (const layerConfig of alreadyLoaded) {
try {
const layerDeps = DependencyCalculator.getLayerDependencies(
new LayerConfig(layerConfig, themeId + "(dependencies)")
)
dependencies.push(...layerDeps)
} catch (e) {
console.error(e)
throw (
"Detecting layer dependencies for " + layerConfig.id + " failed due to " + e
)
}
}
for (const dependency of dependencies) {
if (loadedLayerIds.has(dependency.neededLayer)) {
// We mark the needed layer as 'mustLoad'
alreadyLoaded.find((l) => l.id === dependency.neededLayer).forceLoad = true
}
}
// During the generate script, builtin layers are verified but not loaded - so we have to add them manually here
// Their existence is checked elsewhere, so this is fine
unmetDependencies = dependencies.filter((dep) => !loadedLayerIds.has(dep.neededLayer))
for (const unmetDependency of unmetDependencies) {
if (loadedLayerIds.has(unmetDependency.neededLayer)) {
continue
}
const dep = Utils.Clone(allKnownLayers.get(unmetDependency.neededLayer))
const reason =
"This layer is needed by " +
unmetDependency.neededBy +
" because " +
unmetDependency.reason +
" (at " +
unmetDependency.context +
")"
if (dep === undefined) {
const message = [
"Loading a dependency failed: layer " +
unmetDependency.neededLayer +
" is not found, neither as layer of " +
themeId +
" nor as builtin layer.",
reason,
"Loaded layers are: " + alreadyLoaded.map((l) => l.id).join(","),
]
throw message.join("\n\t")
}
dep.forceLoad = true
dep.passAllFeatures = true
dep.description = reason
dependenciesToAdd.unshift({
config: dep,
reason,
})
loadedLayerIds.add(dep.id)
unmetDependencies = unmetDependencies.filter(
(d) => d.neededLayer !== unmetDependency.neededLayer
)
}
} while (unmetDependencies.length > 0)
return dependenciesToAdd
}
convert(
theme: LayoutConfigJson,
context: string
): { result: LayoutConfigJson; information: string[] } {
const state = this._state
const allKnownLayers: Map<string, LayerConfigJson> = state.sharedLayers
const knownTagRenderings: Map<string, TagRenderingConfigJson> = state.tagRenderings
const information = []
const layers: LayerConfigJson[] = <LayerConfigJson[]>theme.layers // Layers should be expanded at this point
knownTagRenderings.forEach((value, key) => {
value.id = key
})
const dependencies = AddDependencyLayersToTheme.CalculateDependencies(
layers,
allKnownLayers,
theme.id
)
for (const dependency of dependencies) {
}
if (dependencies.length > 0) {
for (const dependency of dependencies) {
information.push(
context +
": added " +
dependency.config.id +
" to the theme. " +
dependency.reason
)
}
}
layers.unshift(...dependencies.map((l) => l.config))
return {
result: {
...theme,
layers: layers,
},
information,
}
}
}
class PreparePersonalTheme extends DesugaringStep<LayoutConfigJson> {
private readonly _state: DesugaringContext
constructor(state: DesugaringContext) {
super("Adds every public layer to the personal theme", ["layers"], "PreparePersonalTheme")
this._state = state
}
convert(
json: LayoutConfigJson,
context: string
): {
result: LayoutConfigJson
errors?: string[]
warnings?: string[]
information?: string[]
} {
if (json.id !== "personal") {
return { result: json }
}
// The only thing this _really_ does, is adding the layer-ids into 'layers'
// All other preparations are done by the 'override-all'-block in personal.json
json.layers = Array.from(this._state.sharedLayers.keys())
.filter((l) => this._state.sharedLayers.get(l).source !== null)
.filter((l) => this._state.publicLayers.has(l))
return {
result: json,
information: ["The personal theme has " + json.layers.length + " public layers"],
}
}
}
class WarnForUnsubstitutedLayersInTheme extends DesugaringStep<LayoutConfigJson> {
constructor() {
super(
"Generates a warning if a theme uses an unsubstituted layer",
["layers"],
"WarnForUnsubstitutedLayersInTheme"
)
}
convert(
json: LayoutConfigJson,
context: string
): {
result: LayoutConfigJson
errors?: string[]
warnings?: string[]
information?: string[]
} {
if (json.hideFromOverview === true) {
return { result: json }
}
const warnings = []
for (const layer of json.layers) {
if (typeof layer === "string") {
continue
}
if (layer["builtin"] !== undefined) {
continue
}
if (layer["source"]["geojson"] !== undefined) {
// We turn a blind eye for import layers
continue
}
const wrn =
"The theme " +
json.id +
" has an inline layer: " +
layer["id"] +
". This is discouraged."
warnings.push(wrn)
}
return {
result: json,
warnings,
}
}
}
export class PrepareTheme extends Fuse<LayoutConfigJson> {
private state: DesugaringContext
constructor(
state: DesugaringContext,
options?: {
skipDefaultLayers: false | boolean
}
) {
super(
"Fully prepares and expands a theme",
new AddContextToTranslationsInLayout(),
new PreparePersonalTheme(state),
new WarnForUnsubstitutedLayersInTheme(),
new On("layers", new Concat(new SubstituteLayer(state))),
new SetDefault("socialImage", "assets/SocialImage.png", true),
// We expand all tagrenderings first...
new On("layers", new Each(new PrepareLayer(state))),
// Then we apply the override all
new ApplyOverrideAll(),
// And then we prepare all the layers _again_ in case that an override all contained unexpanded tagrenderings!
new On("layers", new Each(new PrepareLayer(state))),
options?.skipDefaultLayers
? new Pass("AddDefaultLayers is disabled due to the set flag")
: new AddDefaultLayers(state),
new AddDependencyLayersToTheme(state),
new AddImportLayers()
)
this.state = state
}
convert(
json: LayoutConfigJson,
context: string
): { result: LayoutConfigJson; errors: string[]; warnings: string[]; information: string[] } {
const result = super.convert(json, context)
if (this.state.publicLayers.size === 0) {
// THis is a bootstrapping run, no need to already set this flag
return result
}
const needsNodeDatabase = result.result.layers?.some((l: LayerConfigJson) =>
l.tagRenderings?.some((tr: TagRenderingConfigJson) =>
ValidationUtils.getSpecialVisualisations(tr)?.some(
(special) => special.needsNodeDatabase
)
)
)
if (needsNodeDatabase) {
result.information.push(
context +
": setting 'enableNodeDatabase' as this theme uses a special visualisation which needs to keep track of _all_ nodes"
)
result.result.enableNodeDatabase = true
}
return result
}
}