import "server-only";
import { cookies } from "next/headers";
import { orderReferenceSchema, type CartSnapshot, type OrderSnapshot } from "@salixcommerce/core";
import { commerceRepository } from "./commerce";
import { CART_CAPABILITY_COOKIE, hashCartCapability, parseCartCapability } from "./capability";

export async function loadCurrentCart(): Promise<CartSnapshot | null> {
  const capabilityHash = await currentCapabilityHash();
  return capabilityHash === null ? null : commerceRepository.loadCart(capabilityHash);
}

export async function loadCurrentOrder(reference: string): Promise<OrderSnapshot | null> {
  const parsedReference = orderReferenceSchema.safeParse(reference);
  if (!parsedReference.success) return null;
  const capabilityHash = await currentCapabilityHash();
  return capabilityHash === null
    ? null
    : commerceRepository.loadOrder(capabilityHash, parsedReference.data);
}

export async function currentCapabilityHash(): Promise<string | null> {
  const cookieStore = await cookies();
  const capability = parseCartCapability(cookieStore.get(CART_CAPABILITY_COOKIE)?.value);
  return capability === null ? null : hashCartCapability(capability);
}