// @vitest-environment happy-dom

import { defineComponent, nextTick, onMounted, onUnmounted } from 'vue'
import { flushPromises, mount } from '@vue/test-utils'
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
import IndexPage from '@/pages/index/index.vue'

const testState = vi.hoisted(() => ({
  threeMapMountCount: 0,
  threeMapUnmountCount: 0,
  onShowHandler: null as null | (() => Promise<void> | void)
}))

vi.mock('@dcloudio/uni-app', () => ({
  onLoad: vi.fn(),
  onShow: (handler: () => Promise<void> | void) => {
    testState.onShowHandler = handler
  }
}))

vi.mock('@/utils/hostEnvironment', () => ({
  isEmbeddedInWechatMiniProgram: () => false
}))

const modelSource = {
  loadPackage: async () => ({ overviewModelUrl: '', floors: [] }),
  loadFloorPois: async () => []
}

vi.mock('@/usecases/guideUseCase', () => ({
  guideUseCase: {
    getAssetBaseUrl: () => '/static/nav-assets',
    getModelSource: () => modelSource,
    normalizeFloorId: (value: string) => value,
    getFloors: async () => []
  }
}))

vi.mock('@/usecases/guideRouteUseCase', () => ({
  guideRouteUseCase: {
    listTargets: async () => [],
    searchTargets: async () => [],
    getRouteReadiness: async () => ({ ready: false, message: '' }),
    planRoute: async () => null
  }
}))

vi.mock('@/usecases/explainUseCase', () => ({
  explainUseCase: {
    loadExplainHalls: async () => [],
    loadExplainHallSummaries: async () => ({}),
    listHalls: async () => [],
    searchExplain: async () => []
  }
}))

const GuidePageFrameStub = defineComponent({
  name: 'GuidePageFrame',
  template: '<main><slot /></main>'
})

const GuideMapShellStub = defineComponent({
  name: 'GuideMapShell',
  props: {
    mapType: { type: String, default: 'indoor' }
  },
  emits: ['initial-model-ready', 'initial-model-failed', 'mode-change'],
  setup() {
    onMounted(() => {
      testState.threeMapMountCount += 1
    })
    onUnmounted(() => {
      testState.threeMapUnmountCount += 1
    })
    return {}
  },
  template: `
    <section data-testid="guide-map-shell">
      <div v-if="mapType === 'indoor'" data-testid="three-map"></div>
      <div v-else data-testid="tencent-map"></div>
    </section>
  `
})

const stubs = {
  GuidePageFrame: GuidePageFrameStub,
  GuideMapShell: GuideMapShellStub,
  PoiSearchPanel: true,
  RoutePlannerPanel: true,
  ArrivalPanel: true,
  ExplainHallSelect: true
}

const mountIndex = async () => {
  const wrapper = mount(IndexPage, { global: { stubs } })
  await flushPromises()
  return wrapper
}

const initialModelReady = { view: 'overview' as const, floorId: 'L1' }
const initialModelFailed = { view: 'overview' as const, floorId: 'L1', message: 'network failed' }

beforeEach(() => {
  vi.useFakeTimers()
  testState.threeMapMountCount = 0
  testState.threeMapUnmountCount = 0
  testState.onShowHandler = null
  window.history.replaceState({}, '', '/#/pages/index/index?tab=guide')
  vi.stubGlobal('uni', {
    navigateTo: vi.fn(),
    navigateBack: vi.fn(),
    reLaunch: vi.fn(),
    showToast: vi.fn(),
    hideKeyboard: vi.fn()
  })
})

afterEach(() => {
  vi.useRealTimers()
  vi.restoreAllMocks()
  vi.unstubAllGlobals()
})

describe('首页启动遮罩与馆内模型生命周期', () => {
  it('12 秒超时后仍保持 indoor，且不会挂载 TencentMap', async () => {
    const wrapper = await mountIndex()

    await vi.advanceTimersByTimeAsync(12000)
    await vi.advanceTimersByTimeAsync(360)

    expect(wrapper.getComponent(GuideMapShellStub).props('mapType')).toBe('indoor')
    expect(wrapper.get('[data-testid="three-map"]').exists()).toBe(true)
    expect(wrapper.find('[data-testid="tencent-map"]').exists()).toBe(false)
    expect(testState.threeMapMountCount).toBe(1)
    expect(testState.threeMapUnmountCount).toBe(0)
    wrapper.unmount()
  })

  it('超时后的迟到 initialModelReady 仍可完成当前 ThreeMap 加载', async () => {
    const wrapper = await mountIndex()
    const shell = wrapper.getComponent(GuideMapShellStub)

    await vi.advanceTimersByTimeAsync(12000)
    shell.vm.$emit('initial-model-ready', initialModelReady)
    await nextTick()
    await vi.advanceTimersByTimeAsync(360)

    expect(shell.props('mapType')).toBe('indoor')
    expect(wrapper.find('.app-launch-overlay').exists()).toBe(false)
    expect(testState.threeMapMountCount).toBe(1)
    expect(testState.threeMapUnmountCount).toBe(0)
    wrapper.unmount()
  })

  it('initialModelFailed 后保留 ThreeMap，重试就绪不产生额外挂载', async () => {
    const wrapper = await mountIndex()
    const shell = wrapper.getComponent(GuideMapShellStub)

    shell.vm.$emit('initial-model-failed', initialModelFailed)
    await nextTick()
    await vi.advanceTimersByTimeAsync(360)

    expect(shell.props('mapType')).toBe('indoor')
    expect(wrapper.get('[data-testid="three-map"]').exists()).toBe(true)
    expect(wrapper.find('[data-testid="tencent-map"]').exists()).toBe(false)

    shell.vm.$emit('initial-model-ready', initialModelReady)
    await nextTick()
    expect(testState.threeMapMountCount).toBe(1)
    expect(testState.threeMapUnmountCount).toBe(0)
    wrapper.unmount()
  })

  it('仅在用户主动切换到馆外 2D 时才挂载 TencentMap', async () => {
    const wrapper = await mountIndex()
    const shell = wrapper.getComponent(GuideMapShellStub)

    shell.vm.$emit('mode-change', '2d')
    await nextTick()
    expect(shell.props('mapType')).toBe('outdoor')
    expect(wrapper.get('[data-testid="tencent-map"]').exists()).toBe(true)

    shell.vm.$emit('mode-change', '3d')
    await nextTick()
    expect(shell.props('mapType')).toBe('indoor')
    wrapper.unmount()
  })
})