// App-local message extensions, deep-merged over @vmall/shared locales.
// Each domain module owns its own namespace; register new domains below.
// (Never edit the shared locale files from an app agent.)

import shell from "./locales/shell";
import home from "./locales/home";
import search from "./locales/search";
import product from "./locales/product";
import cart from "./locales/cart";
import checkout from "./locales/checkout";
import auth from "./locales/auth";
import user from "./locales/user";
import stores from "./locales/stores";
import marketing from "./locales/marketing";

type Tree = Record<string, unknown>;

function deepMerge<T extends Tree>(base: T, extra: Tree): T {
  const out: Tree = { ...base };
  for (const [k, v] of Object.entries(extra)) {
    const b = out[k];
    out[k] = b && v && typeof b === "object" && typeof v === "object"
      ? deepMerge(b as Tree, v as Tree)
      : v;
  }
  return out as T;
}

// Keys referenced by retained shared components (PriceText) and generic handlers.
const legacyEn: Tree = {
  mall: {
    notAvailable: "—",
    loadFailed: "Unable to load data",
  },
};

const legacyZh: Tree = {
  mall: {
    notAvailable: "—",
    loadFailed: "加载失败",
  },
};

const domains = [shell, home, search, product, cart, checkout, auth, user, stores, marketing];

export const enExtra: Tree = domains.reduce<Tree>(
  (acc, m) => deepMerge(acc, m.en as Tree),
  legacyEn,
);
export const zhExtra: Tree = domains.reduce<Tree>(
  (acc, m) => deepMerge(acc, m.zh as Tree),
  legacyZh,
);