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 TodayEnvironment } from './TodayEnvironmentStrip.vue'

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

async function mountStrip(props: { environment: TodayEnvironment | 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:#302a24;font-size:23px;line-height:1.15;font-weight:760')
    expect(css).toContain('margin-top:6px;color:#655b50;font-size:12px;font-weight:450')
    expect(css).toContain('.today-environment__eyeline{color:#8b8275;font-size:11px')
    expect(css).toContain('.today-environment__item+.today-environment__item{border-left:1px solid var(--line)}')
    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(--line);border-left:0!important}')
    expect(css).toContain('.today-environment__gold{grid-column:2;grid-row:2;border-top:1px solid var(--line)}')
    expect(css).toContain('.today-environment__weather,.today-environment__gold{padding:13px 10px;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')
  })
})