import { buildLocationServiceMap } from "../location-services"

import { LocationServiceMap } from "../location-service-map"

import { LayerNode } from "./layer-node"

import { makeGlobalNode } from "./app-node"

export function build<A, E>(root: LayerNode.Node<A, E, any>, replacements: LayerNode.Replacements = []) {

let allReplacements = replacements

// Only build the location service map if it's actually needed

if (LayerNode.hasUnbound(root, LocationServiceMap.node) && !hasReplacement(replacements, LocationServiceMap.node)) {

const locationMap = buildLocationServiceMap(replacements)

const locationMapNode = makeGlobalNode({ service: LocationServiceMap.Service, layer: locationMap, deps: [] })

allReplacements = replacements.concat([[LocationServiceMap.node, locationMapNode]])

}

return LayerNode.compile(root, allReplacements)

}

function hasReplacement(replacements: LayerNode.Replacements, node: LayerNode.Node<unknown, unknown, any>) {

return replacements.some(([source]) => source.name === node.name)

}

export * as AppNodeBuilder from "./app-node-builder"