export const BACKGROUND_LAYER_OPTIONS = [ { id: "raster-base-layer", label: "Raster" }, { id: "graticules-line", label: "Graticules" }, { id: "land", label: "Land" }, { id: "bg-countries-fill", label: "Countries" }, { id: "bg-country-borders-line", label: "Country Borders" }, { id: "regions-line", label: "Regions" }, { id: "lakes-fill", label: "Lakes" }, { id: "rivers-line", label: "Rivers" }, { id: "geolines-line", label: "Geolines" }, ] as const; export type BackgroundLayerId = (typeof BACKGROUND_LAYER_OPTIONS)[number]["id"]; export type BackgroundLayerVisibility = Record; // Tạo map visibility mặc định cho toàn bộ background layers. function buildBackgroundLayerVisibility(value: boolean): BackgroundLayerVisibility { return BACKGROUND_LAYER_OPTIONS.reduce((acc, option) => { acc[option.id] = value; return acc; }, {} as BackgroundLayerVisibility); } export const DEFAULT_BACKGROUND_LAYER_VISIBILITY = buildBackgroundLayerVisibility(true); export const HIDDEN_BACKGROUND_LAYER_VISIBILITY = buildBackgroundLayerVisibility(false);