import { afterEach, describe, expect, it } from 'vitest'
import { readFileSync } from 'node:fs'
import { resolve } from 'node:path'
import { createApp, h, nextTick } from 'vue'
import TodayEnvironmentStrip, { type TodayCountdown, type TodayEnvironment } from './TodayEnvironmentStrip.vue'

const cleanups: Array<() => void> = []

async function mountStrip(props: { environment: TodayEnvironment | null; countdown?: TodayCountdown | null; loading?: boolean; failed?: boolean }) {
  const host = document.createElement('div')
  document.body.append(host)
  const app = createApp(() => h(TodayEnvironmentStrip, props))
  app.mount(host)
  cleanups.push(() => { app.unmount(); host.remove() })
  await nextTick()
  return host
}

afterEach(() => cleanups.splice(0).forEach((cleanup) => cleanup()))

const environment: TodayEnvironment = {
  calendar: { solar_date: '2026年9月16日', weekday: '星期三', lunar_date: '农历八月初六' },
  weather: { status: 'fresh', location: '宁波海曙', text: '多云', temperature_c: 27, observed_at: '2026-09-16T09:00:00+08:00' },
  gold: { status: 'stale', symbol: 'Au99.99', price_cny_per_gram: 782.35, market_date: '2026-09-15', source: '上海黄金交易所' },
}

describe('TodayEnvironmentStrip', () => {
  it('renders date, fixed-location weather, and delayed SGE Au99.99 quote', async () => {
    const host = await mountStrip({ environment })
    expect(host.querySelector('.today-environment')?.getAttribute('aria-label')).toBe('今日环境信息')
    expect(host.textContent).toContain('9月16日 周三')
    expect(host.textContent).toContain('农历八月初六')
    const weather = host.querySelector('.today-environment__weather')!
    expect(weather.children).toHaveLength(2)
    expect(weather.querySelector('strong')?.textContent).toBe('宁波 27°C 多云')
    expect(weather.querySelector('small')?.textContent).toBe('海曙 09:00')
    expect(host.textContent).toContain('Au99.99 ¥782.35/g')
    expect(host.textContent).toContain('上金所延迟价 09-15')
    expect(host.querySelector('.today-environment__gold')?.classList.contains('is-stale')).toBe(true)
  })

  it('accepts the aggregation endpoint field names and derives source status', async () => {
    const host = await mountStrip({ environment: {
      date: { solar_date: '2026-09-16', weekday: '星期三', lunar: '农历八月初六', timezone: 'Asia/Shanghai' },
      weather: { temperature_c: 28.4, weather_code: 2, observed_at: '2026-09-16T14:15:00+08:00', source: 'Open-Meteo', stale: false },
      gold: { contract: 'Au99.99', latest_price: '935.990', market_date: '2026-09-16', delayed: true, source: '上海黄金交易所', stale: true },
    } as TodayEnvironment })
    expect(host.textContent).toContain('9月16日 周三')
    expect(host.textContent).toContain('宁波 28.4°C 多云')
    expect(host.textContent).toContain('Au99.99 ¥935.99/g')
    expect(host.textContent).toContain('上金所延迟价 09-16')
    expect(host.querySelector('.today-environment__gold')?.classList.contains('is-stale')).toBe(true)
  })

  it('shows local loading, cached, and per-source unavailable states', async () => {
    const loading = await mountStrip({ environment: null, loading: true })
    expect(loading.querySelector('.today-environment')?.getAttribute('aria-busy')).toBe('true')
    expect(loading.textContent).toContain('环境信息加载中')

    const partial = await mountStrip({ environment: {
      calendar: environment.calendar,
      weather: { status: 'stale', location: '宁波海曙', text: '小雨', temperature_c: 24 },
      gold: { status: 'unavailable', symbol: 'Au99.99' },
    } })
    expect(partial.textContent).toContain('缓存')
    expect(partial.textContent).toContain('Au99.99 暂不可用')
    expect(partial.textContent).not.toContain('环境信息加载中')
  })

  it('keeps existing values visible while a refresh is in progress', async () => {
    const host = await mountStrip({ environment, loading: true })
    expect(host.textContent).toContain('宁波 27°C 多云')
    expect(host.textContent).toContain('海曙 09:00')
    expect(host.textContent).toContain('¥782.35/g')
    expect(host.querySelector('.today-environment')?.getAttribute('aria-busy')).toBe('true')
    const status = host.querySelector('.today-environment__status')
    expect(status?.getAttribute('role')).toBe('status')
    expect(status?.getAttribute('aria-live')).toBe('polite')
    expect(status?.textContent).toContain('更新中')
    expect(status?.classList.contains('sr-only')).toBe(true)
  })

  it('announces refresh failure through the same live status slot', async () => {
    const host = await mountStrip({ environment, failed: true })
    const status = host.querySelector('.today-environment__status')
    expect(status?.getAttribute('role')).toBe('status')
    expect(status?.getAttribute('aria-live')).toBe('polite')
    expect(status?.textContent).toContain('更新失败')
    expect(host.querySelectorAll('.today-environment__refreshing')).toHaveLength(0)
  })

  it('renders compact mobile date copy while preserving desktop and gold date semantics', async () => {
    const host = await mountStrip({ environment })
    expect(host.querySelector('.today-environment__calendar-main--desktop')?.textContent).toBe('9月16日 周三')
    expect(host.querySelector('.today-environment__calendar-main--mobile')?.textContent).toBe('9月16日 周三')
    const goldDate = host.querySelector('.today-environment__gold-date--mobile')
    expect(goldDate?.textContent).toBe('09-15')
    expect(goldDate?.getAttribute('title')).toBe('市场日期 2026-09-15')
    expect(goldDate?.getAttribute('aria-label')).toBe('市场日期 2026-09-15')
    const desktopGoldDate = host.querySelector('.today-environment__gold-date--desktop')
    expect(desktopGoldDate?.textContent).toBe('09-15')
    expect(desktopGoldDate?.getAttribute('aria-label')).toBe('市场日期 2026-09-15')
  })

  it('shows edit-line state only when attention is required', async () => {
    const fresh = await mountStrip({ environment: { ...environment, gold: { ...environment.gold!, status: 'fresh' } } })
    expect(fresh.querySelector('.today-environment')?.classList.contains('has-attention')).toBe(false)
    expect(fresh.querySelector('.today-environment__status')?.textContent).toBe('')

    const refreshing = await mountStrip({ environment, loading: true })
    expect(refreshing.querySelector('.today-environment')?.classList.contains('is-refreshing')).toBe(true)
    expect(refreshing.querySelector('.today-environment__status')?.textContent).toContain('更新中')

    const failed = await mountStrip({ environment, failed: true })
    expect(failed.querySelector('.today-environment')?.classList.contains('has-attention')).toBe(true)
    expect(failed.querySelector('.today-environment__status')?.textContent).toContain('更新失败 · 上次信息')
  })

  it('renders unavailable sources as two-line placeholders without adding a status row', async () => {
    const host = await mountStrip({ environment: {
      calendar: environment.calendar,
      weather: { status: 'unavailable' },
      gold: { status: 'unavailable' },
    } })
    expect(host.querySelectorAll('.today-environment__skeleton')).toHaveLength(4)
    expect(host.querySelectorAll('.today-environment__weather > .today-environment__skeleton')).toHaveLength(2)
    expect(host.querySelectorAll('.today-environment__gold > .today-environment__skeleton')).toHaveLength(2)
  })

  it('uses the selected landing-page typography and full-height separators', () => {
    const css = readFileSync(resolve(process.cwd(), 'src/style.css'), 'utf8')
    expect(css).toContain('.today-environment{grid-column:1/-1;position:relative;min-width:0;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr) minmax(0,1fr);align-items:stretch')
    expect(css).toContain('color:var(--text-primary);font-size:23px;line-height:1.15;font-weight:800')
    expect(css).toContain('margin-top:var(--space-6);color:var(--text-secondary);font-size:12px;font-weight:400')
    expect(css).toContain('.today-environment__eyeline{color:var(--text-secondary);font-size:11px')
    expect(css).toContain('.today-environment__item+.today-environment__item{border-left:1px solid var(--border-cream)}')
    expect(css).not.toContain('.today-environment.has-attention:before')
    expect(css).not.toMatch(/\.today-environment[^}]*gradient|\.today-environment[^}]*box-shadow|\.today-environment[^}]*backdrop-filter/)
  })

  it('matches the selected two-row mobile composition', () => {
    const css = readFileSync(resolve(process.cwd(), 'src/style.css'), 'utf8')
    expect(css).not.toContain('.today-track-head{')
    expect(css).toContain('@media(max-width:720px){.today-environment{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:auto auto}')
    expect(css).toContain('.today-environment__calendar{grid-column:1/-1;grid-row:1;display:flex;flex-direction:row;align-items:baseline;justify-content:space-between')
    expect(css).toContain('.today-environment__weather{grid-column:1;grid-row:2;border-top:1px solid var(--border-cream);border-left:0!important}')
    expect(css).toContain('.today-environment__gold{grid-column:2;grid-row:2;border-top:1px solid var(--border-cream)}')
    expect(css).toContain('.today-environment__weather,.today-environment__gold{padding:var(--space-12) var(--space-10);display:flex;flex-direction:column;')
    expect(css).toContain('.today-environment__calendar-main--desktop,.today-environment__gold-date--desktop{display:none}')
    expect(css).toContain('.today-environment__calendar-main--mobile,.today-environment__gold-date--mobile{display:inline}')
    const mobileBlock = css.slice(css.indexOf('@media(max-width:720px){.today-environment'), css.indexOf('/* Solid cream material system'))
    expect(mobileBlock).not.toContain('text-overflow:ellipsis')
  })

  it('shows umbrella probability and Chinese AQI instead of the observation time', async () => {
    const host = await mountStrip({ environment: {
      calendar: environment.calendar,
      weather: { status: 'fresh', text: '多云', temperature_c: 27, precipitation_probability: 60, observed_at: '2026-09-16T09:00:00+08:00' },
      gold: environment.gold,
      air: { status: 'fresh', aqi: 36, level: '优' },
    } })
    const weather = host.querySelector('.today-environment__weather')!
    expect(weather.querySelector('strong')?.textContent).toBe('宁波 27°C 多云')
    expect(weather.querySelector('small')?.textContent).toBe('降雨60% · AQI 36 优')
    expect(host.textContent).not.toContain('海曙')
  })

  it('marks stale weather with cached data after the rain and AQI segments', async () => {
    const host = await mountStrip({ environment: {
      calendar: environment.calendar,
      weather: { status: 'stale', text: '小雨', temperature_c: 24, precipitation_probability: 20 },
      gold: environment.gold,
      air: { status: 'stale', aqi: 85, level: '良' },
    } })
    expect(host.querySelector('.today-environment__weather small')?.textContent).toBe('降雨20% · AQI 85 良 · 缓存')
  })

  it('falls back to the observation time when rain and AQI are unavailable', async () => {
    const host = await mountStrip({ environment: {
      calendar: environment.calendar,
      weather: { status: 'fresh', text: '晴', temperature_c: 30, observed_at: '2026-09-16T09:00:00+08:00' },
      gold: environment.gold,
      air: null,
    } })
    expect(host.querySelector('.today-environment__weather small')?.textContent).toBe('海曙 09:00')
  })

  it('renders Zhejiang oil and the SSE index with compact metadata', async () => {
    const host = await mountStrip({ environment: {
      calendar: environment.calendar,
      weather: environment.weather,
      gold: environment.gold,
      oil: { status: 'fresh', gas_92: '8.58', gas_95: 9.12, gas_98: '11.12', diesel_0: '8.28', effective_at: '2026-09-24T00:12:00' },
      ashare: { status: 'fresh', name: '上证指数', price: '3888.3738', prev_close: '3936.5199', change_percent: -1.22, as_of: '2026-09-24' },
    } })
    const oil = host.querySelector('.today-environment__oil')!
    expect(oil.classList.contains('is-fresh')).toBe(true)
    expect(oil.querySelector('strong')?.textContent).toBe('92# 8.58')
    expect(oil.querySelector('small')?.textContent).toBe('09-24生效')
    const ashare = host.querySelector('.today-environment__ashare')!
    expect(ashare.querySelector('strong')?.textContent).toBe('上证 3888.37')
    expect(ashare.querySelector('small')?.textContent).toBe('-1.22% · 09-24')
  })

  it('signs index gains and marks stale oil', async () => {
    const host = await mountStrip({ environment: {
      calendar: environment.calendar,
      weather: environment.weather,
      gold: environment.gold,
      oil: { status: 'stale', gas_92: '8.58', gas_95: '9.12', gas_98: '11.12', effective_at: '2026-09-24T00:12:00', stale: true },
      ashare: { status: 'fresh', name: '上证指数', price: '3900.5', change_percent: 0.35, as_of: '2026-09-25' },
    } })
    expect(host.querySelector('.today-environment__ashare small')?.textContent).toBe('+0.35% · 09-25')
    const oil = host.querySelector('.today-environment__oil')!
    expect(oil.classList.contains('is-stale')).toBe(true)
    expect(oil.querySelector('small')?.textContent).toBe('09-24生效 · 缓存')
  })

  it('renders unavailable oil and index sources as two-line placeholders', async () => {
    const host = await mountStrip({ environment: {
      calendar: environment.calendar,
      weather: environment.weather,
      gold: environment.gold,
      oil: null,
      ashare: null,
    } })
    expect(host.querySelectorAll('.today-environment__oil > .today-environment__skeleton')).toHaveLength(2)
    expect(host.querySelectorAll('.today-environment__ashare > .today-environment__skeleton')).toHaveLength(2)
    expect(host.textContent).toContain('浙江油价暂不可用')
    expect(host.textContent).toContain('上证指数暂不可用')
  })

  it('hides the new slots when an older payload does not carry their keys', async () => {
    const host = await mountStrip({ environment })
    expect(host.querySelector('.today-environment__oil')).toBeNull()
    expect(host.querySelector('.today-environment__ashare')).toBeNull()
    expect(host.querySelector('.today-environment__countdown')).toBeNull()
  })

  it('shows the next countdown and truncates very long titles', async () => {
    const host = await mountStrip({ environment, countdown: { title: '国庆节', days: 6, day_text: '还有 6 天' } })
    const countdown = host.querySelector('.today-environment__countdown')!
    expect(countdown.querySelector('strong')?.textContent).toBe('国庆节')
    expect(countdown.querySelector('small')?.textContent).toBe('还有 6 天')

    const long = await mountStrip({ environment, countdown: { title: '一二三四五六七八九十甲乙丙', days: 3, day_text: '还有 3 天' } })
    expect(long.querySelector('.today-environment__countdown strong')?.textContent).toBe('一二三四五六七八九十甲…')
  })

  it('keeps a today countdown slot with its own copy', async () => {
    const host = await mountStrip({ environment, countdown: { title: '中秋节', days: 0, day_text: '就是今天' } })
    expect(host.querySelector('.today-environment__countdown small')?.textContent).toBe('就是今天')
  })
})