import { describe, expect, it } from "vitest";

// The platform layer (`components/ui/`) may not import a feature component or a domain API slice —
// eslint's `no-restricted-imports` enforces that. It cannot see an i18n KEY, though, and two
// primitives spoke domain vocabulary through one: `PriorityStepper` labelled itself with
// `channels.row.*` (and told every caller that it orders the Feed), `Combobox` said `plex.loading`
// and `plex.filter.moreRefine` on the feed sidebar. A primitive's strings live in a platform
// namespace; what a value MEANS where it is used arrives as a prop.
const PLATFORM_NAMESPACES = new Set([
  "common",
  "errors",
  "datatable",
  "keys",
  "palette",
  "sidebar",
  "notifications",
  "time",
]);

const files = import.meta.glob("./**/*.{ts,tsx}", {
  query: "?raw",
  import: "default",
  eager: true,
});
// `t("ns.…")` and `t(\`ns.…\`)` — the namespace is everything before the first dot.
const KEY = /\bt\(\s*["`]([A-Za-z]+)\./g;

describe("components/ui/ speaks only platform i18n namespaces", () => {
  it("names no feature namespace", () => {
    const sources = Object.entries(files).filter(([p]) => !/\.test\.tsx?$/.test(p));
    expect(sources.length).toBeGreaterThan(20); // the glob matched the layer
    const offenders = sources.flatMap(([p, src]) =>
      [...String(src).matchAll(KEY)]
        .map((m) => m[1]!)
        .filter((ns) => !PLATFORM_NAMESPACES.has(ns))
        .map((ns) => `${p}: ${ns}.*`),
    );
    expect(offenders).toEqual([]);
  });

  it("sees a feature namespace when one is used", () => {
    expect([...'t("plex.loading")'.matchAll(KEY)].map((m) => m[1])).toEqual(["plex"]);
  });
});