import type { MudletMap } from '../mapIO';
import type { Command, NeighborEdit } from './types';
import type { SceneHandle } from './scene';
/**
 * Apply a command. When a `scene` is provided, mutations go through
 * `scene.reader` so the renderer stays in sync automatically. When it is
 * omitted (tests, etc.) we mutate the raw map directly — the caller is
 * responsible for triggering a rebuild.
 */
export declare function applyCommand(map: MudletMap, cmd: Command, scene?: SceneHandle | null): {
    structural: boolean;
};
export declare function revertCommand(map: MudletMap, cmd: Command, scene?: SceneHandle | null): {
    structural: boolean;
};
export declare function pushCommand(cmd: Command, scene?: SceneHandle | null): boolean;
export declare function pushBatch(cmds: Command[], scene?: SceneHandle | null): boolean;
export declare function undoOnce(scene?: SceneHandle | null): {
    changed: boolean;
    structural: boolean;
};
export declare function redoOnce(scene?: SceneHandle | null): {
    changed: boolean;
    structural: boolean;
};
/** Build setCustomLine commands that translate all waypoints of a room's custom lines by (dx, dy) in raw Mudlet space (y-up). */
export declare function buildCustomLineMoveCommands(map: MudletMap, roomId: number, dx: number, dy: number): Command[];
export declare function buildDeleteNeighborEdits(map: MudletMap, roomId: number): NeighborEdit[];
/**
 * Build commands that merge `selectedIds` into `keeperId` (which must be one of
 * them). Every exit — cardinal or special — that pointed at an absorbed room is
 * re-pointed to the keeper; outgoing exits the keeper lacks are copied onto it;
 * the absorbed rooms are then deleted. The keeper keeps its own position, name,
 * symbol, environment and other attributes. Returns an ordered command list
 * suitable for a single `batch` (fully undo-correct when reverted in reverse).
 *
 * Conflicts (keeper already has an exit in a direction a victim also uses) keep
 * the keeper's exit; the victim's competing exit is dropped. Stubs, doors, exit
 * weights and custom lines on absorbed rooms are not transferred.
 */
export declare function buildMergeRoomsCommands(map: MudletMap, keeperId: number, selectedIds: number[]): Command[];
/** O(n) version for batch deletion: one pass over all rooms, results for each deleted id. */
export declare function buildDeleteNeighborEditsForMany(map: MudletMap, ids: number[]): Map<number, NeighborEdit[]>;