import { readdirSync, readFileSync } from "node:fs";
import { dirname, resolve } from "node:path";
import { fileURLToPath } from "node:url";
import { describe, expect, it } from "vitest";

// components/ui/README.md is how the platform layer is found: "reuse before build" only works if a
// primitive is listed where the next author looks. A dozen files had slipped in unlisted, so every
// source file in the directory must be named there, in backticks, by its file name.
const UI = resolve(dirname(fileURLToPath(import.meta.url)), "../components/ui");

describe("the platform layer's README", () => {
  it("names every file in components/ui", () => {
    const readme = readFileSync(resolve(UI, "README.md"), "utf8");
    const unlisted = readdirSync(UI)
      .filter((f) => /\.tsx?$/.test(f) && !/\.test\.tsx?$/.test(f) && !f.endsWith(".testkit.ts"))
      .map((f) => f.replace(/\.tsx?$/, ""))
      .filter((name) => !readme.includes("`" + name + "`"));
    expect(unlisted).toEqual([]);
  });
});