import { expect, test } from '@playwright/test';
import { pagePath } from './helpers';

test.describe('keyboard and palette', () => {
  test('skip link is first and moves focus to main', async ({ page }) => {
    await page.goto('/');
    await page.keyboard.press('Tab');
    const skip = page.locator('.skip-link');
    await expect(skip).toBeFocused();
    await page.keyboard.press('Enter');
    await expect(page.locator('#main-content')).toBeFocused();
  });

  test('mobile nav toggle keeps aria-expanded in sync', async ({ page, request }) => {
    const ssr = await request.get('/');
    expect(ssr.ok()).toBe(true);
    const html = await ssr.text();
    expect(html).toContain('aria-expanded="true"');
    expect(html).toContain('id="primary-nav"');
    expect(html).toContain('class="site-nav"');
    expect(html).toMatch(/<div[^>]*class="site"/);
    expect(html).not.toMatch(/<div[^>]*class="[^"]*\bsite\b[^"]*\bnav-collapsed\b/);

    await page.setViewportSize({ width: 390, height: 844 });
    await page.goto('/');
    const toggle = page.locator('.nav-toggle');
    await expect(toggle).toBeVisible();
    await expect(toggle).toHaveAttribute('aria-expanded', 'false');
    await toggle.click();
    await expect(toggle).toHaveAttribute('aria-expanded', 'true');
    await toggle.click();
    await expect(toggle).toHaveAttribute('aria-expanded', 'false');
  });

  test('collapsed header stays under 25% of the viewport and is not sticky below md', async ({
    page,
  }) => {
    const viewport = { width: 390, height: 844 };
    await page.setViewportSize(viewport);
    await page.goto('/');

    const header = page.locator('.site-header');
    const box = await header.boundingBox();
    expect(box).toBeTruthy();
    expect(box!.height).toBeLessThan(viewport.height * 0.25);

    await expect
      .poll(async () => header.evaluate((element) => getComputedStyle(element).position))
      .not.toBe('sticky');

    await page.locator('.nav-toggle').click();
    await expect(page.locator('.nav-toggle')).toHaveAttribute('aria-expanded', 'true');
    expect(await header.evaluate((element) => getComputedStyle(element).position)).not.toBe(
      'sticky',
    );

    for (const width of [768, 820, 1024, 1280, 1440]) {
      await page.setViewportSize({ width, height: 900 });
      await page.goto('/');
      expect(
        await header.evaluate((element) => getComputedStyle(element).position),
        `header must not be sticky at ${width}px`,
      ).not.toBe('sticky');
    }
  });

  test('compact services submenu stays keyboard accessible at 1024px', async ({
    page,
  }, testInfo) => {
    test.skip(testInfo.project.name === 'mobile', 'compact submenu applies from md up');

    await page.setViewportSize({ width: 1024, height: 900 });
    await page.goto('/');

    const servicesParent = page.locator(
      `.primary-nav > li > a[href="${pagePath('services', 'de')}"]`,
    );
    const firstChild = page.locator(
      `.primary-nav > li > .submenu a[href="${pagePath('servicesSoftware', 'de')}"]`,
    );

    await servicesParent.focus();
    await expect(firstChild).toBeVisible();
    await page.keyboard.press('Tab');
    await expect(firstChild).toBeFocused();

    const headerBox = await page.locator('.site-header').boundingBox();
    expect(headerBox, 'header while submenu is open').toBeTruthy();
    expect(headerBox!.height, 'header height while submenu is open').toBeLessThanOrEqual(200);
  });

  test('palette opens with Control+K, traps focus, locks scroll and restores on Escape', async ({
    page,
  }) => {
    await page.goto('/');
    const trigger = page.locator('.command-palette-trigger');
    await trigger.focus();
    await page.keyboard.press('Control+k');

    const dialog = page.locator('[role="dialog"]');
    await expect(dialog).toBeVisible();
    await expect(page.locator('.site')).toHaveAttribute('inert', '');
    expect(await page.evaluate(() => document.body.style.overflow)).toBe('hidden');

    const focusable = dialog.locator(
      'a[href], button:not([disabled]), input:not([disabled]), textarea:not([disabled]), select:not([disabled])',
    );
    const count = await focusable.count();
    const first = focusable.first();
    const last = focusable.nth(count - 1);
    await last.focus();
    await page.keyboard.press('Tab');
    await expect(first).toBeFocused();
    await page.keyboard.press('Shift+Tab');
    await expect(last).toBeFocused();

    await page.keyboard.press('Escape');
    await expect(dialog).toHaveCount(0);
    await expect(page.locator('.site')).not.toHaveAttribute('inert');
    expect(await page.evaluate(() => document.body.style.overflow)).toBe('');
    await expect(trigger).toBeFocused();
  });
});