import { test, expect, type Page } from '@playwright/test';

import { login, navigateTo } from '../smoke/helpers';

/**
 * Visual regression baselines for stable list/landing pages.
 *
 * On first run (or after intentional UI changes), regenerate:
 *   pnpm exec playwright test --project=visual --update-snapshots
 *
 * Subsequent runs diff against the committed PNGs under
 * tests/e2e/visual/snapshots.spec.ts-snapshots/.
 *
 * Pages chosen are list/landing screens that don't depend on per-row
 * fixture data - they tolerate seed drift between runs. Detail screens
 * (yacht detail, EOI dialog, invoice form review) are intentionally
 * deferred until we have stable fixtures wired up.
 */

const PAGES = [
  { name: 'portal-login', path: '/portal/login', requireAuth: false },
  { name: 'dashboard', path: '/dashboard', requireAuth: true },
  { name: 'clients-list', path: '/clients', requireAuth: true },
  { name: 'yachts-list', path: '/yachts', requireAuth: true },
  { name: 'berths-list', path: '/berths', requireAuth: true },
  { name: 'invoices-list', path: '/invoices', requireAuth: true },
  { name: 'hub-root', path: '/documents', requireAuth: true },
] as const;

async function settle(page: Page) {
  // Quiet the page so dynamic content (timers, spinners, blinking cursors)
  // doesn't cause flaky pixel diffs.
  await page.addStyleTag({
    content: `
      *, *::before, *::after {
        animation-duration: 0s !important;
        animation-delay: 0s !important;
        transition-duration: 0s !important;
        transition-delay: 0s !important;
        caret-color: transparent !important;
      }
    `,
  });
  await page.waitForLoadState('networkidle');
  // Tiny pause to let TanStack Query flush
  await page.waitForTimeout(500);
}

test.describe('Visual regression', () => {
  for (const p of PAGES) {
    test(`${p.name} matches baseline`, async ({ page }) => {
      if (p.requireAuth) {
        await login(page, 'super_admin');
        await navigateTo(page, p.path);
      } else {
        await page.goto(p.path);
      }

      await settle(page);

      await expect(page).toHaveScreenshot(`${p.name}.png`, {
        fullPage: true,
        // Tolerate small text-rendering differences across machines/runs.
        maxDiffPixelRatio: 0.02,
      });
    });
  }

  /**
   * Hub entity-folder visual - click into the Clients system root, then into
   * the first visible entity sub-folder. This is a best-effort baseline:
   * if no entity sub-folders exist yet the test skips with a clear message
   * rather than failing.
   */
  test('hub-entity-folder matches baseline', async ({ page }) => {
    await login(page, 'super_admin');
    await navigateTo(page, '/documents');
    await page.waitForLoadState('networkidle');

    // Expand the Clients system root.
    const expandBtn = page.locator('aside').getByRole('button', { name: 'Expand' }).first();
    const hasExpand = await expandBtn.isVisible({ timeout: 5_000 }).catch(() => false);
    if (!hasExpand) {
      test.skip(true, 'No expandable folder found in sidebar - hub-entity-folder baseline skipped');
      return;
    }
    await expandBtn.click();

    // Wait briefly for children to appear.
    await page.waitForTimeout(500);

    // Find the first entity sub-folder button (deeper indent = child of Clients).
    // We look for any button in the aside that is NOT one of the fixed pseudo-rows.
    const pseudoNames = ['All documents', 'Root (no folder)', 'Clients', 'Companies', 'Yachts'];
    const allFolderBtns = page.locator('aside button[type="button"]');
    let entityFolderBtn: ReturnType<typeof page.locator> | null = null;

    const count = await allFolderBtns.count();
    for (let i = 0; i < count; i++) {
      const btn = allFolderBtns.nth(i);
      const text = (await btn.textContent())?.trim() ?? '';
      if (text && !pseudoNames.includes(text) && text !== 'Expand' && text !== 'Collapse') {
        entityFolderBtn = btn;
        break;
      }
    }

    if (!entityFolderBtn) {
      test.skip(
        true,
        'No entity sub-folder visible after expanding - hub-entity-folder baseline skipped',
      );
      return;
    }

    await entityFolderBtn.click();
    await settle(page);

    await expect(page).toHaveScreenshot('hub-entity-folder.png', {
      fullPage: true,
      maxDiffPixelRatio: 0.02,
    });
  });
});
