import type { Task } from "../../Task/model";
import type { Managed } from "../model";
import { onExitFirst, onExitFirst_ } from "./onExitFirst";

/**
 * Ensures that `f` is executed when this `Managed` is finalized, before
 * the existing finalizer.
 *
 * For use cases that need access to the Managed's result, see `onExitFirst`.
 */
export function ensuringFirst<R1>(
   f: Task<R1, never, unknown>
): <R, E, A>(self: Managed<R, E, A>) => Managed<R & R1, E, A> {
   return onExitFirst(() => f);
}

/**
 * Ensures that `f` is executed when this `Managed` is finalized, before
 * the existing finalizer.
 *
 * For use cases that need access to the Managed's result, see `onExitFirst_`.
 */
export function ensuringFirst_<R, E, A, R1>(
   self: Managed<R, E, A>,
   f: Task<R1, never, unknown>
): Managed<R & R1, E, A> {
   return onExitFirst_(self, () => f);
}