import { readFileSync } from 'node:fs'
import { resolve } from 'node:path'
import { afterEach, beforeEach, describe, expect, it } from 'vitest'
import { enableAutoUnmount, flushPromises, mount } from '@vue/test-utils'
import AppShell from '../../src/components/shell/AppShell.vue'
import { setNavigation } from '../../src/state/useNavigation'
import { NARROW_QUERY, setCollapsed } from '../../src/state/useSidebar'
import { showToast } from '../../src/state/useToasts'
import { navigationFixture } from '../fixtures/typed'
import { setBundle } from '../../src/app/i18n'
import { fakeMedia, resetState, routerAt, signIn } from '../helpers'
import { langFixture } from '../fixtures/typed'

async function mountShell(path: string) {
  await signIn()
  setNavigation(navigationFixture.data)
  const router = await routerAt(path)
  const wrapper = mount(AppShell, {
    slots: { default: '<p data-page>content</p>' },
    global: { plugins: [router] },
    attachTo: document.body,
  })
  await flushPromises()
  return wrapper
}

beforeEach(() => {
  resetState()
  setCollapsed(false)
})

afterEach(() => {
  setCollapsed(false)
  document.body.innerHTML = ''
})

enableAutoUnmount(afterEach)

describe('app shell', () => {
  it('renders rail, section panel, header landmarks and the page in main', async () => {
    const wrapper = await mountShell('/acme/demo/widgets')
    expect(wrapper.find('nav[aria-label="Wtyczki"]').exists()).toBe(true)
    expect(wrapper.find('aside[aria-label="Sekcje"]').exists()).toBe(true)
    expect(wrapper.find('header nav[aria-label="Ścieżka nawigacji"]').exists()).toBe(true)
    expect(wrapper.find('header [data-user-menu]').exists()).toBe(true)
    expect(wrapper.find('main [data-page]').text()).toBe('content')
  })

  it('has no section panel outside a permitted plugin', async () => {
    const wrapper = await mountShell('/settings')
    expect(wrapper.find('aside').exists()).toBe(false)
  })

  it('hides the section panel when collapsed by the admin or by the viewport', async () => {
    const wrapper = await mountShell('/acme/demo/widgets')
    setCollapsed(true)
    await flushPromises()
    expect(wrapper.find('aside').exists()).toBe(false)
    setCollapsed(false)
    await flushPromises()
    expect(wrapper.find('aside').exists()).toBe(true)
  })

  it('follows the viewport while mounted and stops listening on unmount', async () => {
    const media = fakeMedia({ [NARROW_QUERY]: false })
    const wrapper = await mountShell('/acme/demo/widgets')
    expect(media.listeners(NARROW_QUERY)).toBe(1)
    media.change(NARROW_QUERY, true)
    await flushPromises()
    expect(wrapper.find('aside').exists()).toBe(false)
    wrapper.unmount()
    expect(media.listeners(NARROW_QUERY)).toBe(0)
  })

  it('mounts the toast queue with status and alert roles', async () => {
    const wrapper = await mountShell('/acme/demo/widgets')
    showToast('Saved')
    showToast('Broken', 'danger')
    await flushPromises()
    expect(wrapper.find('[role="status"]').text()).toContain('Saved')
    expect(wrapper.find('[role="alert"]').text()).toContain('Broken')
  })
})

describe('View site link (Phase 16.2 quick follow-up)', () => {
  it('opens the site root in a new tab without an opener or referrer', async () => {
    const wrapper = await mountShell('/acme/demo/widgets')
    const link = wrapper.find('header a[data-view-site]')
    expect(link.exists()).toBe(true)
    expect(link.attributes('href')).toBe(`${window.location.origin}/`)
    expect(link.attributes('target')).toBe('_blank')
    expect(link.attributes('rel')?.split(' ').sort()).toEqual(['noopener', 'noreferrer'])
    // It sits next to the user menu, inside the header.
    expect(link.element.nextElementSibling?.matches('[data-user-menu], :has([data-user-menu])')).toBe(true)
    expect(link.find('svg').attributes('aria-hidden')).toBe('true')
  })

  it.each([
    ['pl', 'Zobacz stronę'],
    ['en', 'View site'],
  ])('labels the link from the phrasebook in %s', async (locale, label) => {
    setBundle({ ...langFixture.data, 'backend::lang.nav.view_site': { other: label } }, locale)
    const wrapper = await mountShell('/acme/demo/widgets')
    const link = wrapper.find('a[data-view-site]')
    expect(link.attributes('aria-label')).toBe(label)
    expect(link.attributes('title')).toBe(label)
  })

  it('has the label key in the backend phrasebook for en and pl', () => {
    for (const [locale, label] of [
      ['en', 'View site'],
      ['pl', 'Zobacz stronę'],
    ]) {
      // vitest runs from the admin directory.
      const yaml = readFileSync(resolve(process.cwd(), '../modules/phrasebook/backend/lang', locale!, 'lang.yaml'), 'utf8')
      expect(yaml).toMatch(new RegExp(`^nav:[\\s\\S]*?^  view_site: ${label}$`, 'm'))
    }
  })
})