import { afterEach, beforeAll, describe, expect, it, vi } from 'vitest'
import { labelsFor } from '../../assets/src/elements/labels'
import type { LinksData } from '../../assets/src/elements/links'
import { HostFailure, mountWidget, settle } from './host'

// E10 golem15-seo-links (UI-SPEC C19, D-82).

beforeAll(async () => {
  await import('../../assets/src/elements/index')
})

afterEach(() => {
  vi.unstubAllGlobals()
  vi.useRealTimers()
  document.body.replaceChildren()
})

const en = labelsFor('en')

const crawled: LinksData = {
  crawledAt: '2026-11-04T10:00:00Z',
  inbound: 0,
  outbound: 3,
  orphan: true,
  out: [{ phrase: 'shiitake', title: 'Shiitake', url: 'https://example.com/pages/shiitake' }],
  in: [{ phrase: 'lwia grzywa', title: 'Oyster', adminUrl: '/backend/acme/pages/pages/update/3' }],
}

function stubClipboard(): { writes: string[] } {
  const writes: string[] = []
  vi.stubGlobal('navigator', {
    ...navigator,
    clipboard: {
      writeText: (text: string) => {
        writes.push(text)
        return Promise.resolve()
      },
    },
  })
  return { writes }
}

describe('E10 golem15-seo-links', () => {
  it('asks for the links of the shown locale on connect and renders counters, the orphan callout and both lists', async () => {
    stubClipboard()
    const host = mountWidget('golem15-seo-links', { attrs: { 'ui-locale': 'en' }, answer: () => crawled })
    await settle()
    expect(host.posted).toEqual([{ op: 'links', locale: '' }])
    const node = host.node
    const values = [...node.querySelectorAll('.summer-stat__value')].map((n) => n.textContent)
    expect(values).toEqual(['0', '3'])
    expect([...node.querySelectorAll('.summer-stat__label')].map((n) => n.textContent)).toEqual([en.linksInbound, en.linksOutbound])
    expect(node.textContent).toContain('From the crawl of ')
    expect(node.querySelector('.summer-callout--warning')!.textContent).toContain(en.linksOrphanTitle)
    const headings = [...node.querySelectorAll('.seo-links__heading')].map((n) => n.textContent)
    expect(headings).toEqual([en.linksOut, en.linksIn])
    const out = node.querySelector('.seo-links__list--out .seo-links__row')!
    expect(out.textContent).toContain('“shiitake” → Shiitake')
    const link = out.querySelector('a')!
    expect(link.getAttribute('href')).toBe('https://example.com/pages/shiitake')
    expect(link.target).toBe('_blank')
    expect(link.rel).toBe('noopener')
    const inbound = node.querySelector('.seo-links__list--in .seo-links__row a')!
    expect(inbound.getAttribute('href')).toBe('/backend/acme/pages/pages/update/3')
    expect(node.querySelector('.seo-links__none')).toBeNull()
    expect(node.getAttribute('aria-busy')).toBe('false')
  })

  it('shows notCrawled instead of counters before a crawl and none under empty lists', async () => {
    const host = mountWidget('golem15-seo-links', {
      attrs: { 'ui-locale': 'en' },
      answer: () => ({ crawledAt: null, inbound: null, outbound: null, orphan: false, out: [], in: [] }),
    })
    await settle()
    const node = host.node
    expect(node.querySelector('.summer-stats')).toBeNull()
    expect(node.textContent).toContain(en.linksNotCrawled)
    expect(node.querySelector('.summer-callout')).toBeNull()
    expect(node.querySelectorAll('.seo-links__none')).toHaveLength(2)
    expect(node.querySelector('.seo-links__none')!.textContent).toBe(en.linksNone)
  })

  it('shows the checking line with aria-busy while loading and the danger line on failure', async () => {
    const host = mountWidget('golem15-seo-links', {
      attrs: { 'ui-locale': 'pl' },
      answer: () => {
        throw new HostFailure('down')
      },
    })
    await Promise.resolve()
    expect(host.node.getAttribute('aria-busy')).toBe('true')
    expect(host.node.querySelector('.seo-links__checking')!.getAttribute('role')).toBe('status')
    await settle()
    const error = host.node.querySelector('.seo-links__error')!
    expect(error.textContent).toBe(labelsFor('pl').linksFailed)
    expect(error.getAttribute('role')).toBe('status')
    expect(host.node.getAttribute('aria-busy')).toBe('false')
  })

  it('copies the address and says so for two seconds', async () => {
    const clip = stubClipboard()
    const host = mountWidget('golem15-seo-links', { attrs: { 'ui-locale': 'en' }, answer: () => crawled })
    await settle()
    vi.useFakeTimers()
    const button = host.node.querySelector<HTMLButtonElement>('.seo-links__copy')!
    expect(button.textContent).toBe(en.linksCopy)
    button.click()
    await Promise.resolve()
    await Promise.resolve()
    expect(clip.writes).toEqual(['https://example.com/pages/shiitake'])
    expect(host.node.querySelector('.seo-links__status')!.textContent).toBe(en.linksCopied)
    vi.advanceTimersByTime(2000)
    expect(host.node.querySelector('.seo-links__status')!.textContent).toBe('')
  })

  it('hides Copy address without a clipboard and keeps the address as text', async () => {
    vi.stubGlobal('navigator', { ...navigator, clipboard: undefined })
    const host = mountWidget('golem15-seo-links', { attrs: { 'ui-locale': 'en' }, answer: () => crawled })
    await settle()
    expect(host.node.querySelector('.seo-links__copy')).toBeNull()
    expect(host.node.querySelector('.seo-links__url')!.textContent).toBe('https://example.com/pages/shiitake')
  })

  it('asks again on the ML locale switch', async () => {
    const host = mountWidget('golem15-seo-links', { attrs: { 'ui-locale': 'en' }, answer: () => crawled })
    await settle()
    window.dispatchEvent(new CustomEvent('summer:ml-locale', { detail: 'pl' }))
    await settle()
    expect(host.posted).toEqual([
      { op: 'links', locale: '' },
      { op: 'links', locale: 'pl' },
    ])
  })
})