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

test('first home visit teaches on the real page and dismissing is remembered', async ({ page }) => {
  const errors: string[] = [];
  page.on('pageerror', error => errors.push(error.message));
  await page.goto('/?demo=1&city=1&stop=101');
  const guide = page.locator('.featureDiscovery');
  await expect(guide).toBeVisible();
  await expect(guide.locator('.discoveryCard')).toHaveAttribute('data-step', 'stop-picker');
  await expect(page.locator('[data-discovery="stop-picker"]')).toBeVisible();
  await expect(page.locator('#departures')).toBeVisible();
  await guide.getByRole('button', { name: 'Пропустить', exact: true }).click();
  await expect(guide).toHaveCount(0);
  expect(await page.evaluate(() => localStorage.getItem('ridebus:discovery:v1'))).toBe('done');
  await page.reload();
  await expect(page.locator('#departures')).toBeVisible();
  await expect(guide).toHaveCount(0);
  expect(errors).toEqual([]);
});

test('all guide steps fit a narrow dark viewport, keep the target clear, and work from the keyboard', async ({ page }, info) => {
  await page.setViewportSize({ width: 320, height: 568 });
  await page.emulateMedia({ reducedMotion: 'reduce' });
  await page.addInitScript(() => localStorage.setItem('ridebus:theme', 'dark'));
  await page.goto('/?demo=1&city=1&stop=101');
  const guide = page.locator('.featureDiscovery');
  const card = guide.locator('.discoveryCard');
  const targets = ['stop-picker', 'departures', 'favorites', 'quick-trips', 'settings'];
  for (const [index, target] of targets.entries()) {
    await expect(card).toHaveAttribute('data-step', target);
    await expect.poll(async () => page.evaluate(() => {
      const hint = document.querySelector('.discoveryCard')!.getBoundingClientRect();
      const light = document.querySelector('.discoverySpotlight')!.getBoundingClientRect();
      const overlaps = hint.left < light.right && hint.right > light.left && hint.top < light.bottom && hint.bottom > light.top;
      return { fits: hint.left >= 0 && hint.top >= 0 && hint.right <= innerWidth && hint.bottom <= innerHeight, overlaps };
    })).toEqual({ fits: true, overlaps: false });
    expect(await page.evaluate(() => document.documentElement.scrollWidth <= innerWidth)).toBe(true);
    await expect(card).toHaveCSS('animation-name', 'none');
    await expect(card.getByRole('button', { name: index === 4 ? 'Понятно' : 'Далее', exact: true })).toBeInViewport({ ratio: 1 });
    await expect(card.getByRole('button', { name: 'Пропустить подсказки', exact: true })).toHaveCSS('min-width', '44px');
    if (index === 0) {
      await expect.poll(async () => card.evaluate(element => {
        const bounds = element.getBoundingClientRect();
        const copy = element.querySelector<HTMLElement>('.discoveryCopy')!;
        const copyBounds = copy.getBoundingClientRect();
        const description = copy.querySelector('p')!.getBoundingClientRect();
        const actions = element.querySelector('.discoveryActions')!.getBoundingClientRect();
        return copy.scrollHeight <= copy.clientHeight + 1 && description.bottom <= copyBounds.bottom + 1 && copyBounds.top >= bounds.top && copyBounds.bottom <= actions.top;
      })).toBe(true);
      await page.setViewportSize({ width: 320, height: 360 });
      await expect(card.getByRole('button', { name: 'Далее', exact: true })).toBeInViewport({ ratio: 1 });
      const body = card.locator('.discoveryCopy');
      await expect.poll(async () => card.evaluate(element => {
        const copy = element.querySelector<HTMLElement>('.discoveryCopy')!;
        const overflowing = copy.scrollHeight > copy.clientHeight + 1;
        return overflowing === Boolean(element.querySelector('.discoveryScrollHint'));
      })).toBe(true);
      expect(await body.evaluate(element => element.getBoundingClientRect().bottom <= element.closest('.discoveryCard')!.querySelector('.discoveryActions')!.getBoundingClientRect().top)).toBe(true);
      const dimensions = await body.evaluate(element => ({ scroll: element.scrollHeight, visible: element.clientHeight }));
      if (dimensions.scroll > dimensions.visible + 1) {
        await expect(card.locator('.discoveryScrollHint')).toBeVisible();
        await expect(body).toHaveAttribute('role', 'region');
        await body.evaluate(element => { element.scrollTop = element.scrollHeight; });
        expect(await body.evaluate(element => element.scrollTop)).toBeGreaterThan(0);
      } else {
        await expect(card.locator('.discoveryScrollHint')).toHaveCount(0);
        expect(await body.evaluate(element => element.querySelector('p')!.getBoundingClientRect().bottom <= element.getBoundingClientRect().bottom + 1)).toBe(true);
      }
      await page.setViewportSize({ width: 320, height: 568 });
      await expect(card.locator('.discoveryScrollHint')).toHaveCount(0);
    }
    if (index === 2) {
      await page.keyboard.press('ArrowLeft');
      await expect(card).toHaveAttribute('data-step', 'departures');
      await page.keyboard.press('ArrowRight');
      await expect(card).toHaveAttribute('data-step', target);
    }
    if (index === 0 || index === 4) await page.screenshot({ path: `test-results/discovery-${target}-${info.project.name}.png`, animations: 'disabled' });
    await page.keyboard.press('ArrowRight');
  }
  await expect(guide).toHaveCount(0);
  expect(await page.evaluate(() => localStorage.getItem('ridebus:discovery:v1'))).toBe('done');
});

test('guide can be replayed from settings and Escape dismisses it', async ({ page }, info) => {
  await page.addInitScript(() => localStorage.setItem('ridebus:discovery:v1', 'done'));
  await page.goto('/settings?demo=1');
  await expect(page.locator('.featureDiscovery')).toHaveCount(0);
  await page.getByRole('button', { name: 'Показать подсказки снова', exact: true }).click();
  await expect(page.locator('.discoveryCard')).toHaveAttribute('data-step', 'stop-picker');
  await page.keyboard.press('Escape');
  await expect(page.locator('.featureDiscovery')).toHaveCount(0);
  const nav = page.getByRole('navigation', { name: info.project.name === 'mobile' ? 'Навигация на телефоне' : 'Основная навигация' });
  await nav.getByRole('link', { name: 'Настройки', exact: true }).click();
  await page.getByRole('button', { name: 'Показать подсказки снова', exact: true }).click();
  await expect(page.locator('.discoveryCard')).toHaveAttribute('data-step', 'stop-picker');
});

test('blocked storage does not trap visitors in the guide or prevent a manual replay', async ({ page }, info) => {
  const errors: string[] = [];
  page.on('pageerror', error => errors.push(error.message));
  await page.addInitScript(() => {
    Storage.prototype.getItem = () => { throw new DOMException('Blocked', 'SecurityError'); };
    Storage.prototype.setItem = () => { throw new DOMException('Blocked', 'SecurityError'); };
  });
  await page.goto('/?demo=1');
  await expect(page.locator('.featureDiscovery')).toBeVisible();
  await page.keyboard.press('Escape');
  await expect(page.locator('.featureDiscovery')).toHaveCount(0);
  const nav = page.getByRole('navigation', { name: info.project.name === 'mobile' ? 'Навигация на телефоне' : 'Основная навигация' });
  await nav.getByRole('link', { name: 'Настройки', exact: true }).click();
  await nav.getByRole('link', { name: 'Главная', exact: true }).click();
  await expect(page.locator('.featureDiscovery')).toHaveCount(0);
  await nav.getByRole('link', { name: 'Настройки', exact: true }).click();
  await page.getByRole('button', { name: 'Показать подсказки снова', exact: true }).click();
  await expect(page.locator('.discoveryCard')).toHaveAttribute('data-step', 'stop-picker');
  expect(errors).toEqual([]);
});