import { BBox, FeatureCategory, FeatureCategoryDescriptor, GisFeature } from 'js/cue-gis';
export type GisBBox = BBox;
export type { FeatureCategory };
export type GisCategoryDescriptor = FeatureCategoryDescriptor;
export type { GisFeature };
export type GisFeaturesMap = Map<FeatureCategory, GisFeature[]>;
type Listener<T> = (value: T) => void;
/**
 * Reactive GIS service, exposed lazily as `cue.gis`.
 *
 * Push-based: consumers set the active bbox and selected categories; results are
 * delivered via subscription callbacks.  All debouncing and request cancellation
 * are handled internally.
 *
 * @example
 * ```ts
 * cue.gis.setProjectId('my-project-id');
 * cue.gis.onAvailableCategories(cats => console.log(cats));
 *
 * // On every map pan/zoom:
 * cue.gis.setBbox([west, south, east, north]);
 *
 * // When the user toggles a category:
 * cue.gis.setSelectedCategories(new Set(['cadastre', 'building']));
 *
 * // Cleanup:
 * cue.gis.destroy();
 * ```
 */
export declare class CueGis {
    private readonly _getAuthHeaders;
    private readonly _gatewayUrl;
    private _bbox;
    private _projectId;
    private _selectedCategories;
    private _queryToken;
    private _categoryTokens;
    private _debounceTimer;
    private _availableCategories;
    private _features;
    private readonly _catListeners;
    private readonly _featListeners;
    private readonly _loadListeners;
    private _gatewayCache;
    private _gatewayProjectId;
    /** @internal — construct via `cue.gis`, not directly. */
    constructor(_getAuthHeaders: () => Promise<Record<string, string>>, _gatewayUrl: string);
    /**
     * Update the current map viewport.
     * Triggers a debounced query for available categories and reloads selected ones.
     */
    setBbox(bbox: BBox): void;
    /**
     * Set or clear the active project.
     * Rebuilds the authenticated adapter so subsequent requests carry the new project header.
     */
    setProjectId(projectId: string | null): void;
    /**
     * Replace the full set of selected categories.
     * Newly added categories begin loading immediately; removed categories are cleared.
     */
    setSelectedCategories(categories: Set<FeatureCategory>): void;
    /**
     * Subscribe to available-category updates.
     * Replays the current value immediately, then fires on every bbox change.
     * @returns An unsubscribe function.
     */
    onAvailableCategories(cb: Listener<GisCategoryDescriptor[]>): () => void;
    /**
     * Subscribe to the feature map (category → GisFeature[]).
     * Replays the current value immediately, then fires whenever features change.
     * @returns An unsubscribe function.
     */
    onFeaturesChange(cb: Listener<GisFeaturesMap>): () => void;
    /**
     * Subscribe to the global loading state.
     * Fires `true` while the category list is being queried, `false` when done.
     * @returns An unsubscribe function.
     */
    onLoadingChange(cb: Listener<boolean>): () => void;
    /** Cancel all pending requests and clear all listeners. */
    destroy(): void;
    private _scheduleDebouncedQuery;
    private _getGateway;
    private _queryLayers;
    private _loadCategory;
    private _emitFeatures;
    private _emitLoading;
}