import { type Accessor, createContext, useContext } from "solid-js";

/**
 * Context value handed down by `<Field.Item>` so nested controls can inherit
 * the item-level `disabled` override without walking back to the root.
 *
 * Mirrors Base UI React's `FieldItemContext` — a narrow per-item scope used
 * when a single `<Field.Root>` contains multiple logical sub-controls (e.g.
 * a `<CheckboxGroup>` with per-checkbox labels + descriptions).
 */
export interface FieldItemContextValue {
	disabled: Accessor<boolean>;
	readonly present: boolean;
}

export const NOOP_FIELD_ITEM_CONTEXT: FieldItemContextValue = {
	disabled: () => false,
	present: false,
};

export const FieldItemContext = createContext<FieldItemContextValue>(
	NOOP_FIELD_ITEM_CONTEXT,
);

/**
 * Read the nearest `<Field.Item>` context. Returns the noop context when no
 * item is above — callers can branch on `.present` if they need to detect
 * the "not in an item" case.
 */
export function useFieldItemContext(): FieldItemContextValue {
	return useContext(FieldItemContext);
}