import AxeBuilder from '@axe-core/playwright';
import { expect, test } from '@playwright/test';

import { contextForUser } from './helpers';

/**
 * VS-NfD marking pack (issue #244): in mode `marked`, catalog-listed
 * controls carry an accessible deviation marking that follows the CURRENT
 * (unsaved) value; in mode `off` nothing is marked anywhere. The api's
 * mode is deploy-level, so each half runs only against the matching stack:
 * CI runs the marked half (VS_NFD_MODE=marked on the e2e api), local full
 * runs against a default stack cover the off half.
 */
const BASE_URL = process.env.E2E_BASE_URL ?? 'http://localhost:5173';
const MODE = process.env.E2E_VS_NFD_MODE ?? 'off';

test('mode marked: card, checkbox marking, and point-of-choice marking', async ({ browser }) => {
  test.skip(MODE !== 'marked', 'needs an api started with VS_NFD_MODE=marked');
  const context = await contextForUser(browser, BASE_URL, 'fixture-admin');
  const page = await context.newPage();
  await page.goto('/admin');
  await page.waitForLoadState('networkidle');

  // The profile card shows mode and violation count (issue #243).
  await expect(page.locator('.vs-nfd-summary')).toBeVisible();

  // feeds.enabled defaults to true = violating: its toggle row is marked,
  // and the marking is part of the control's accessible description.
  const feedsInput = page.locator('input[aria-describedby="vs-nfd-mark-feeds.enabled"]');
  await expect(feedsInput).toBeVisible();
  await expect(page.locator('#vs-nfd-mark-feeds\\.enabled')).toBeVisible();

  // Point of choice: the registration-mode marking follows the UNSAVED
  // select value — compliant choice clears it, violating choice brings it
  // back, no save in between.
  const regField = page.locator('label.field', {
    has: page.locator('select[name="auth.registrationMode"]'),
  });
  const regSelect = regField.locator('select');
  await regSelect.selectOption('open');
  await expect(regField.locator('.vs-nfd-mark')).toBeVisible();
  await regSelect.selectOption('closed');
  await expect(regField.locator('.vs-nfd-mark')).toHaveCount(0);
  await regSelect.selectOption('open');
  await expect(regField.locator('.vs-nfd-mark')).toBeVisible();

  await context.close();
});

test('mode hidden: rows disappear, notes mark the hiding, a11y clean', async ({ browser }) => {
  test.skip(MODE !== 'hidden', 'needs an api started with VS_NFD_MODE=hidden');
  const context = await contextForUser(browser, BASE_URL, 'fixture-admin');
  const page = await context.newPage();
  await page.goto('/admin');
  await page.waitForLoadState('networkidle');

  // feeds.enabled defaults to true = ALREADY violating: never silently
  // hidden — the row stays visible with its marking.
  await expect(page.locator('#vs-nfd-mark-feeds\\.enabled')).toBeVisible();

  // Master switches: compliant (false) rows disappear, violating (true)
  // rows stay — derive the expectation from the actual instance settings,
  // the seed state differs between local and CI databases.
  const settings = (await (
    await context.request.get(`${BASE_URL}/api/v1/admin/settings`)
  ).json()) as Record<string, boolean>;
  const masterKeys = ['api.enabled', 'mcp.enabled', 'feeds.enabled', 'plugins.enabled'] as const;
  const visible = masterKeys.filter((key) => settings[key] === true).length;
  expect(visible).toBeLessThan(masterKeys.length); // at least one row is hidden
  await expect(page.locator('.api-opt-in__label')).toHaveCount(visible);
  await expect(page.locator('.vs-nfd-hidden-note').first()).toBeVisible();

  // Value-listed control: the compliant registration mode keeps only its
  // compliant choice (seed leaves it open = violating? then all options).
  const regSelect = page.locator('select[name="auth.registrationMode"]');
  const regField = page.locator('label.field', { has: regSelect });
  const optionCount = await regSelect.locator('option').count();
  const marked = await regField.locator('.vs-nfd-mark').count();
  // Exactly one of the two treatments applies, never a silent third state.
  expect(optionCount === 1 || marked === 1).toBe(true);

  // The hidden state and the policy note pass the axe WCAG A/AA scan.
  const results = await new AxeBuilder({ page }).withTags(['wcag2a', 'wcag2aa']).analyze();
  expect(results.violations).toEqual([]);

  await context.close();
});

test('mode off: no card, no markings', async ({ browser }) => {
  test.skip(MODE !== 'off', 'covers the default stack only');
  const context = await contextForUser(browser, BASE_URL, 'fixture-admin');
  const page = await context.newPage();
  await page.goto('/admin');
  await page.waitForLoadState('networkidle');

  await expect(page.locator('.vs-nfd-summary')).toHaveCount(0);
  await expect(page.locator('.vs-nfd-mark')).toHaveCount(0);

  await context.close();
});