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

type WindowWithExport = Window & {
  __exportPreview?: () => { html: string; css: string; js: string }
}

const builderUrl = '/en/builder'

// This test exports the preview, then loads the exported HTML/CSS in a fresh page
// and verifies that the skip-link becomes visible on focus.
test('Exported page skip-link becomes visible on focus', async ({ page, context }) => {
  await page.goto(builderUrl)

  // Minimal content to allow export to produce sections and styles
  await page.getByTestId('card-hero').click()

  await page.waitForFunction(() => Boolean((window as unknown as WindowWithExport).__exportPreview), { timeout: 5000 })
  const exported = await page.evaluate(() => (window as unknown as WindowWithExport).__exportPreview?.() ?? null)
  expect(exported).not.toBeNull()

  // Open a clean page to render exported HTML/CSS and interact with it
  const preview = await context.newPage()
  await preview.setContent(exported!.html)

  // Inject CSS into the same document head if not already present
  await preview.addStyleTag({ content: exported!.css })

  // Ensure skip-link exists and is initially off-screen
  const skip = preview.locator('a.skip-link')
  await expect(skip).toHaveCount(1)

  // Focus the skip-link and assert it moved on-screen (left not -9999px)
  await skip.focus()
  const box = await skip.boundingBox()
  expect(box).not.toBeNull()
  // left should be >= 0 when focused as per our CSS rule (left:1rem)
  if (!box) throw new Error('skip-link bounding box was null')
  expect(box.x).toBeGreaterThanOrEqual(0)

  await preview.close()
})