/**
 * calendar.spec.ts — TEST-01 + TEST-02
 *
 * Route-specific state assertions for /calendar (UI-SPEC Rules 4/5):
 *   - Populated state: Schedule-X grid visible, EmptyState absent
 *   - Error state: 'Couldn't load events' heading + Retry button ≥44px + no overflow
 *   - Auth-bypass precondition: authed content reached via DEV_AUTH_BYPASS (no OIDC mock)
 *   - SW-block precondition: navigator.serviceWorker.controller is null (no controlling SW)
 *
 * Requires the dev stack running with DEV_AUTH_BYPASS=true (see e2e/README.md).
 * global-setup seeds 'Seeded Test Event' on calendar_id=10 for user_id=1.
 *
 * Runs on both device profiles automatically (playwright.config.ts matrix):
 *   iphone: iPhone 14 / WebKit / 390×844
 *   pixel:  Pixel 7 / Chromium / 412×915
 *
 * Run:
 *   pnpm --filter @familysync/pwa test:e2e
 *   pnpm --filter @familysync/pwa exec playwright test --project=pixel calendar.spec.ts
 */
import { test, expect } from '@playwright/test'

// ── TEST-02 preconditions: DEV_AUTH_BYPASS + no SW controller ─────────────────

test.describe('TEST-02 preconditions — auth bypass and SW block', () => {
  test('DEV_AUTH_BYPASS reached authed PWA without OIDC mock', async ({ page }) => {
    await page.goto('/calendar')

    // Wait for the authed content to appear — DEV_AUTH_BYPASS should resolve immediately
    // without Authelia redirect. The BottomTabBar nav landmark is only rendered after auth.
    const nav = page.getByRole('navigation', { name: 'Main navigation' })
    await expect(nav).toBeVisible()

    // Confirm we are NOT on an external auth host (Authelia login page would redirect the URL)
    const url = new URL(page.url())
    expect(url.hostname, `Expected to remain on localhost or 127.0.0.1, got: ${url.hostname}`).toMatch(
      /^(localhost|127\.0\.0\.1)$/,
    )
  })

  test('no service-worker controller (serviceWorkers: block enforced)', async ({ page }) => {
    await page.goto('/calendar')

    // serviceWorkers: 'block' in playwright.config.ts prevents SW registration.
    // navigator.serviceWorker.controller is null when no SW is controlling the page.
    // Note: navigator.serviceWorker may be undefined in some contexts (e.g. non-https),
    // but in the dev server context it is defined. Treat undefined as no-controller (safe).
    const controller = await page.evaluate(() => {
      if (typeof navigator === 'undefined') return null
      if (!('serviceWorker' in navigator)) return null
      return navigator.serviceWorker.controller
    })
    expect(controller, 'Service worker controller should be null (serviceWorkers:block enforced)').toBeNull()
  })
})

// ── Rule 5: Populated state ───────────────────────────────────────────────────

test.describe('Rule 5 — populated calendar state', () => {
  test.beforeEach(async ({ page }) => {
    await page.goto('/calendar')
    // Wait for auth and Schedule-X to render before asserting
    await expect(page.getByRole('navigation', { name: 'Main navigation' })).toBeVisible()
  })

  test('Schedule-X calendar grid is visible after seeding', async ({ page }) => {
    // The Schedule-X React adapter emits a div.sx-react-calendar-wrapper.
    // Prefer a stable locator: the class name is documented in apps/pwa/src/styles/index.css.
    // No semantic role exists for the widget wrapper, so CSS class is the documented fallback.
    // NOTE: the wrapper renders on any successful auth — this proves the grid mounts, NOT that
    // the seed reached the UI. The DB→UI proof is the separate "seeded event is rendered" test.
    const calendarGrid = page.locator('.sx-react-calendar-wrapper')
    await expect(calendarGrid).toBeVisible()
  })

  test('seeded event "Seeded Test Event" is rendered in the grid (DB→UI proof)', async ({ page }) => {
    // The one assertion that actually proves the seeded row flows DB → API → query → grid.
    // global-setup seeds a timed event titled 'Seeded Test Event' (noon today) on calendar 10.
    // Schedule-X renders the event with its title text inside the grid. If the seed broke, the
    // /api/events join regressed, or hydration dropped events, THIS fails (unlike a wrapper /
    // dead-EmptyState check, which would stay green). Deep-review BL-01.
    await expect(page.getByText('Seeded Test Event').first()).toBeVisible()
  })

  test('no horizontal overflow on populated /calendar (Rule 2)', async ({ page }) => {
    const overflow = await page.evaluate(() => ({
      scrollWidth: document.documentElement.scrollWidth,
      clientWidth: document.documentElement.clientWidth,
    }))
    expect(
      overflow.scrollWidth,
      `scrollWidth (${overflow.scrollWidth}) must be ≤ clientWidth (${overflow.clientWidth}) on populated /calendar`,
    ).toBeLessThanOrEqual(overflow.clientWidth)
  })
})

// ── Rule 5: Error state ───────────────────────────────────────────────────────

test.describe('Rule 5 — calendar error state (API mocked to 500)', () => {
  test('error heading + Retry button visible when /api/events returns 500', async ({ page }) => {
    // Register route BEFORE page.goto — the intercept must be in place before navigation
    // so the very first events request is caught (Pattern 5).
    await page.route('/api/events*', (route) =>
      route.fulfill({ status: 500, body: JSON.stringify({ error: 'simulated' }) }),
    )

    await page.goto('/calendar')

    // Wait for auth (DEV_AUTH_BYPASS)
    await expect(page.getByRole('navigation', { name: 'Main navigation' })).toBeVisible()

    // eventsQuery has retry:2 so Playwright may need to wait for all retries before
    // the error branch renders. Use default Playwright timeout.
    const errorHeading = page.getByRole('heading', { name: "Couldn't load events" })
    await expect(errorHeading).toBeVisible()

    const retryBtn = page.getByRole('button', { name: 'Retry' })
    await expect(retryBtn).toBeVisible()

    // Unroute so the mock does not leak to subsequent tests (T-07-11)
    await page.unroute('/api/events*')
  })

  test('Retry button meets 44px touch-target minimum in error state (Rule 1)', async ({
    page,
  }) => {
    await page.route('/api/events*', (route) =>
      route.fulfill({ status: 500, body: JSON.stringify({ error: 'simulated' }) }),
    )

    await page.goto('/calendar')
    await expect(page.getByRole('navigation', { name: 'Main navigation' })).toBeVisible()

    const retryBtn = page.getByRole('button', { name: 'Retry' })
    await expect(retryBtn).toBeVisible()

    const box = await retryBtn.boundingBox()
    expect(box, 'Retry button bounding box must not be null').not.toBeNull()
    expect(box!.height, 'Retry button height must be ≥ 44px (Rule 1)').toBeGreaterThanOrEqual(44)

    await page.unroute('/api/events*')
  })

  test('no horizontal overflow in error state (Rule 2)', async ({ page }) => {
    await page.route('/api/events*', (route) =>
      route.fulfill({ status: 500, body: JSON.stringify({ error: 'simulated' }) }),
    )

    await page.goto('/calendar')
    await expect(page.getByRole('navigation', { name: 'Main navigation' })).toBeVisible()

    // Wait for error heading to confirm the error branch has rendered
    await expect(page.getByRole('heading', { name: "Couldn't load events" })).toBeVisible()

    const overflow = await page.evaluate(() => ({
      scrollWidth: document.documentElement.scrollWidth,
      clientWidth: document.documentElement.clientWidth,
    }))
    expect(
      overflow.scrollWidth,
      `scrollWidth (${overflow.scrollWidth}) must be ≤ clientWidth (${overflow.clientWidth}) in error state`,
    ).toBeLessThanOrEqual(overflow.clientWidth)

    await page.unroute('/api/events*')
  })
})