import { fileURLToPath } from "node:url";

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

// `local/literal-a11y-text` (eslint.config.js): what a screen reader or a tooltip says is user-facing
// text, so it goes through t() like the rest. Five English `aria-label`s and a whole English panel
// survived every lane before it. A rule that matches nothing looks exactly like a clean codebase, so
// this asserts it fires.
const RULE = "local/literal-a11y-text";
const FRONTEND = fileURLToPath(new URL("../../", import.meta.url));

async function hits(source: string): Promise<number> {
  const eslint = new ESLint({ cwd: FRONTEND });
  const [result] = await eslint.lintText(source, { filePath: "src/components/__probe.tsx" });
  return (result?.messages ?? []).filter((m) => m.ruleId === RULE).length;
}

describe("a literal word in an attribute the user hears or sees", () => {
  it("is refused, in every spelling of a string", async () => {
    expect(await hits(`export const A = () => <button aria-label="remove" />;\n`)).toBe(1);
    expect(await hits(`export const B = () => <button title={"Collapse"} />;\n`)).toBe(1);
    expect(await hits("export const C = () => <input placeholder={`Search`} />;\n")).toBe(1);
    expect(await hits(`export const D = () => <img alt="A poster" src="" />;\n`)).toBe(1);
  });

  it("lets through a translation, a decorative image, a symbol and a URL shape", async () => {
    expect(await hits(`export const E = ({ t }) => <button aria-label={t("x.y")} />;\n`)).toBe(0);
    expect(await hits(`export const F = () => <img alt="" src="" />;\n`)).toBe(0);
    expect(await hits(`export const G = () => <span title="×" />;\n`)).toBe(0);
    expect(await hits(`export const H = () => <input placeholder="https://…" />;\n`)).toBe(0);
  });
});