import { existsSync, readdirSync, readFileSync, statSync } from "node:fs";
import { join } from "node:path";
import { describe, expect, test } from "vitest";

const root = process.cwd();
const uiSourceRoot = existsSync(join(root, "packages/ui/src"))
  ? join(root, "packages/ui/src")
  : join(root, "src");

const forbiddenTerms = [
  "dimensionlab",
  "dimension lab",
  "vaultwarden",
  "forgejo",
  "grafana",
  "uptime kuma",
  "prometheus",
  "backrest",
  "open webui",
  "comfyui",
  "adminer",
  "cockpit",
  "ollama",
];

describe("UI package content boundary", () => {
  test("contains the reusable dashboard component inventory", () => {
    expect(existsSync(join(uiSourceRoot, "index.ts"))).toBe(true);
    expect(existsSync(join(uiSourceRoot, "components/DashboardFrame.tsx"))).toBe(
      true,
    );
    expect(existsSync(join(uiSourceRoot, "components/ThemeToggle.tsx"))).toBe(
      true,
    );
    expect(existsSync(join(uiSourceRoot, "styles.css"))).toBe(true);
  });

  test("keeps environment-specific content out of reusable UI source", () => {
    const source = readUiSource(uiSourceRoot).toLowerCase();

    expect(forbiddenTerms.filter((term) => source.includes(term))).toEqual([]);
  });

  test("does not import website runtime modules", () => {
    const source = readUiSource(uiSourceRoot);

    expect(source).not.toMatch(
      /from ["'](?:apps\/web|\$lib\/server|\$lib\/model)/,
    );
    expect(source).not.toContain("../web/");
  });

  test("keeps icon rendering driven by icon identifiers", () => {
    const source = readUiSource(uiSourceRoot);

    expect(source).not.toContain("@iconify-json/");
    expect(source).not.toContain("/icons/");
  });
});

function readUiSource(path: string): string {
  if (!existsSync(path)) return "";

  const stats = statSync(path);
  if (stats.isFile()) {
    if (path.endsWith(".test.ts") || path.endsWith(".test.tsx")) return "";
    if (!/\.(tsx|ts|css)$/.test(path)) return "";
    return readFileSync(path, "utf8");
  }

  return readdirSync(path)
    .map((entry) => readUiSource(join(path, entry)))
    .join("\n");
}