import { createContext, useContext } from "solid-js";
import type { ToastStore } from "../toast-store";

/**
 * Context carrying the ambient `<Toast.Provider>`'s store.
 *
 * Solid 2's `useContext` throws `ContextNotFoundError` when the resolved
 * value is `undefined`, so the sentinel for "no provider mounted" is `null`
 * — `useToastManager` is a public hook that users can legitimately call
 * outside a provider (mistakenly), and we want the Base UI error message,
 * not Solid's raw `ContextNotFoundError`.
 */
export const ToastProviderContext = createContext<ToastStore | null>(null);

export function useToastProviderContext(): ToastStore {
	let store: ToastStore | null = null;
	try {
		store = useContext(ToastProviderContext);
	} catch {
		// Belt-and-braces for cross-module-instance ownership (e.g. a hook
		// test that sets up its owner via a CJS `require("solid-js")` while
		// this module's `createContext` came from the ESM bundle — Solid's
		// two copies don't share the context registry and `useContext`
		// throws `ContextNotFoundError` despite the `null` default).
	}
	if (store == null) {
		throw new Error(
			"Base UI: useToastManager must be used within <Toast.Provider>.",
		);
	}
	return store;
}