import { NextResponse } from "next/server";

export function jsonOk<T>(payload: T, init?: ResponseInit) {
  return NextResponse.json(payload, init);
}

export function jsonError(error: unknown, status = 400) {
  const resolvedStatus = statusFromError(error) || status;
  return NextResponse.json({
    error: error instanceof Error ? error.message : String(error)
  }, { status: resolvedStatus });
}

export async function readJsonBody<T extends Record<string, unknown>>(request: Request): Promise<T> {
  try {
    return await request.json() as T;
  } catch {
    return {} as T;
  }
}

function statusFromError(error: unknown): number | undefined {
  if (typeof error !== "object" || error === null || !("status" in error)) return undefined;
  const status = Number((error as { status?: unknown }).status);
  return Number.isInteger(status) && status >= 400 && status <= 599 ? status : undefined;
}