import { ZodError } from "zod";
import { handleActionError as foundationHandle } from "@/lib/foundation/action";

export type ActionResult<T = Record<string, unknown>> =
  | { ok: true; data?: T }
  | { ok: false; error: string; fieldErrors?: Record<string, string[]> };

export function actionOk<T = Record<string, unknown>>(data?: T): ActionResult<T> {
  return { ok: true, data: data ?? ({} as T) };
}

export function actionError(message: string): ActionResult<never> {
  return { ok: false, error: message };
}

export class ActionError extends Error {
  constructor(message: string) {
    super(message);
    this.name = "ActionError";
  }
}

export function handleActionError(error: unknown): ActionResult<never> {
  if (error instanceof ZodError) {
    return {
      ok: false,
      error: "Validation failed",
      fieldErrors: error.flatten().fieldErrors as Record<string, string[]>,
    };
  }
  if (error instanceof Error && error.name === "ActionError") {
    return { ok: false, error: error.message };
  }
  return foundationHandle(error) as ActionResult<never>;
}