import { useWidgetShallow } from './widget-store-registry'
import type { WidgetState } from './types'

/**
 * Reactive read of a single transform's `enabled` flag from the
 * per-widget store. Returns `false` if the transform hasn't been
 * registered yet (i.e., the action component hasn't mounted) — safe
 * default for "the feature is off".
 *
 * Used by widget composers that want to react to an action's on/off
 * cycle without having the widget primitive import the action. For
 * example, the `CategoryWidget` storybook composer wires the
 * SearcherToggle's open state into `<Widget.Category searcherOpen=…>`
 * so the library primitive stays renderer-agnostic.
 *
 * Magic-string `transformId` is intentional — it lives at the composer
 * layer where the action is already imported by JSX, so the string
 * appears alongside the same name in the toolbox.
 */
export function useTransformEnabled(id: string, transformId: string): boolean {
  return useWidgetShallow(
    id,
    (s: WidgetState) => s.transformStates?.[transformId]?.enabled === true,
  )
}