import type { ActionFunctionArgs } from "@remix-run/node";
import { authenticate } from "../shopify.server";
import { setShopTier, tierFromPlanName } from "../services/billing.server";

// Fires whenever an AppSubscription's status changes (created, activated,
// cancelled, expired, frozen for non-payment, declined) — the durable,
// authoritative way to keep Shop.tier in sync, since it fires even when the
// merchant cancels from Shopify's own billing page rather than /app/billing.
export const action = async ({ request }: ActionFunctionArgs) => {
  const { shop, topic, payload } = await authenticate.webhook(request);

  const subscription = (payload as { app_subscription?: { name?: string; status?: string } })
    .app_subscription;

  const tier = subscription?.status === "ACTIVE" ? tierFromPlanName(subscription.name) : "free";
  await setShopTier(shop, tier);

  console.log(`[billing] ${topic} for ${shop}: ${subscription?.name ?? "none"} (${subscription?.status}) -> tier=${tier}`);

  return new Response();
};