import { expect, test } from "vitest";

import { siteLayout, getPaths } from "@data/site-layout.ts";

export const setDifference = <T>(a: Set<T>, b: Set<T>) =>
  new Set([...a].filter((x) => !b.has(x)));

// Paths that should be known to Astro statically
const astroStaticPaths = new Set(
  Object.keys(import.meta.glob("/src/pages/**/*.astro")).map(
    (path) =>
      path
        .replace("/src/pages", "")
        .replace(/index\.astro$/, "")
        .replace(/\.astro$|\.md$/, "")
        .replace(/\/$/, "") || "/",
  ),
);

// Paths that exist in the site layout
const siteLayoutPaths = new Set([
  ...getPaths(siteLayout),
  ...getPaths(siteLayout, [], true),
]);

test("Astro Paths Not Empty", () => {
  expect(astroStaticPaths).not.toHaveLength(0);
});

test("Site Layout Paths Not Empty", () => {
  expect(siteLayoutPaths).not.toHaveLength(0);
});

test("Pages Missing from Site Layout", () => {
  const astroNotLayoutPaths = setDifference(astroStaticPaths, siteLayoutPaths);
  expect(astroNotLayoutPaths).toHaveLength(0);
});

test("Pages Missing from Astro Paths", () => {
  const siteLayoutNotAstroPaths = setDifference(
    siteLayoutPaths,
    astroStaticPaths,
  );
  expect(siteLayoutNotAstroPaths).toHaveLength(0);
});