import { chromium } from 'playwright'
import fs from 'node:fs'

const results = { url: 'http://localhost:4173/', checks: [] }
const add = (name, passed, detail) => { results.checks.push({ name, passed, detail }); console.log(passed ? 'PASS' : 'FAIL', name, '-', detail) }

const browser = await chromium.launch()
const page = await browser.newPage({ viewport: { width: 1920, height: 1080 } })
const errors = []
page.on('pageerror', (e) => errors.push(String(e)))
page.on('console', (m) => { if (m.type() === 'error') errors.push(m.text()) })

await page.goto(results.url, { waitUntil: 'networkidle' })
await page.evaluate(() => document.fonts.ready)
await page.waitForTimeout(500)

// 1. runtime render
const rootChildren = await page.evaluate(() => document.getElementById('root').children.length)
add('react-root-renders', rootChildren > 0, `#root has ${rootChildren} child nodes`)

// 2. section order
const order = await page.evaluate(() =>
  [...document.querySelectorAll('header, section, footer')].map(el => el.className || el.tagName).join(' > ')
)
add('section-order', /header.*hero.*projects.*clients.*manifest.*cta.*footer/i.test(order), order)

// 3. page height ~8520
const height = await page.evaluate(() => document.documentElement.scrollHeight)
add('page-height', Math.abs(height - 8520) < 130, `rendered ${height}px vs reference 8520px`)

// 4. cards
const cards = await page.locator('.card').count()
add('project-cards', cards === 6, `${cards} project cards`)

// 5. nav interaction
await page.locator('.nav-item', { hasText: 'Referenzen' }).click()
await page.waitForTimeout(700)
const activeLabel = await page.locator('.nav-item.is-active').textContent()
const scrolled = await page.evaluate(() => window.scrollY)
add('nav-clickable', activeLabel === 'Referenzen' && scrolled > 300, `active="${activeLabel}", scrollY=${scrolled}`)
await page.locator('.nav-item', { hasText: 'Home' }).click()
await page.waitForTimeout(600)

// 6. carousel arrows
const before = await page.locator('.manifest-card-title').textContent()
await page.locator('.carousel-arrow--right').click()
const after = await page.locator('.manifest-card-title').textContent()
await page.locator('.carousel-arrow--left').click()
const back = await page.locator('.manifest-card-title').textContent()
add('carousel-arrows', before !== after && back === before, `slide changes on next ("${before.slice(0, 16)}" -> "${after.slice(0, 16)}") and returns on prev`)

// 7. card hover/click affordance
const cardCursor = await page.locator('.card').first().evaluate(el => getComputedStyle(el).cursor)
add('cards-clickable', cardCursor === 'pointer', `card cursor=${cardCursor}`)

// 8. images loaded
const imgs = await page.evaluate(() => [...document.images].map(i => ({ src: i.src.split('/').pop(), ok: i.complete && i.naturalWidth > 0 })))
add('images-loaded', imgs.every(i => i.ok), `${imgs.filter(i => i.ok).length}/${imgs.length} images ok`)

// 9. no console/page errors
add('no-runtime-errors', errors.length === 0, errors.join('; ') || 'clean console')

// final screenshot
await page.evaluate(() => window.scrollTo(0, 0))
await page.waitForTimeout(400)
await page.screenshot({ path: '/workspace/repo/screenshots/full-page.png', fullPage: true })
add('screenshot-captured', fs.existsSync('/workspace/repo/screenshots/full-page.png'), 'screenshots/full-page.png')

await browser.close()
results.passed = results.checks.every(c => c.passed)
fs.writeFileSync('/workspace/tmp/validate.json', JSON.stringify(results, null, 2))
console.log('ALL', results.passed ? 'PASSED' : 'FAILED')