import { createContext, use } from "react";

/**
 * Creates context values along with a pre-bound use(Context) hook that throws
 * if context value is falsy.
 *
 * @param [debugName="Value"] Optionally, provide a debug name for this context
 * value to be used within error messages if context value is nullish.
 *
 * @example
 * ```ts
 * export const [KnightContext, useKnight] = createStrictContext<Knight>("KnightContext");
 * ```
 */
export function createStrictContext<T>(debugName: string = "Value") {
  const Context = createContext<T | null>(null);

  const useStrictContext = () => {
    const value = use(Context);
    if (!value) {
      throw new Error(`${debugName} not found in context.`);
    }
    return value;
  };

  return [Context, useStrictContext] as const;
}