import assert from 'node:assert/strict'

const exhibitionSpaceTypeWhitelist = new Set([
  'exhibition_hall',
  'theater',
  'education_activity',
  'ramp'
])

const exhibitionSpaceKeywords = [
  '展厅',
  '临展',
  '展览',
  '影院',
  '球幕',
  '巨幕',
  '报告厅',
  '活动室',
  '科普',
  '实验室',
  '展览坡道',
  '宇宙',
  '地球',
  '演化',
  '恐龙',
  '人类',
  '生物',
  '生态',
  '家园'
]

const normalizedText = (value) => (value || '').trim()
const normalizedHallName = (value) => normalizedText(value).replace(/[\s（）()【】\[\]_-]/g, '')
const hasExhibitionKeyword = (value) => exhibitionSpaceKeywords.some((keyword) => normalizedText(value).includes(keyword))

const isEligiblePublicExhibitionSpace = (space) => {
  const type = normalizedText(space.type).toLowerCase()
  const name = normalizedText(space.name)

  // Finding 2: Enforce whitelist first, reject unrelated types before keyword heuristics
  if (!exhibitionSpaceTypeWhitelist.has(type)) return false

  if (type === 'exhibition_hall') return true
  if (type === 'theater') return hasExhibitionKeyword(name)
  if (type === 'education_activity') return hasExhibitionKeyword(name)
  if (type === 'ramp') return name.includes('展览坡道')

  return false
}

const placeHallName = (place) => (
  normalizedText(place.ownerName)
  || normalizedText(place.name)
    .replace(/(?:主)?(?:出入口|入口|出口|门)\s*[A-Za-z0-9一二三四五六七八九十号-]*$/u, '')
    .trim()
  || normalizedText(place.name)
)

const isExhibitionHallNavigablePlace = (place) => {
  const searchableText = [
    place.name,
    place.ownerName,
    place.category,
    place.type,
    place.typeCode,
    place.typeName
  ]
    .map(normalizedText)
    .filter(Boolean)
    .join(' ')

  return hasExhibitionKeyword(searchableText)
}

const findMatchedHallSpace = (place, spaces) => {
  const placeName = normalizedHallName(placeHallName(place))
  if (!placeName) return undefined

  return spaces.find((space) => {
    const spaceName = normalizedHallName(space.name)
    return spaceName && (placeName.includes(spaceName) || spaceName.includes(placeName))
  })
}

const normalizePositionSource = (source) => {
  const x = Number(source?.x)
  const y = Number(source?.y)
  const z = Number(source?.z)
  if (![x, y, z].every(Number.isFinite)) return undefined
  return [x, y, z]
}

const normalizePlacePosition = (place) => normalizePositionSource(
  place.position
    ? { x: place.position.x, y: place.position.y ?? 0, z: place.position.z }
    : { x: place.x, y: place.y ?? 0, z: place.z }
)

const normalizeSpaceCenter = (space) => normalizePositionSource(space.center || {})

const createHallPoiId = (space, place, fallbackIndex) => {
  if (space?.id) return `hall-${space.id}`
  const ownerName = normalizedHallName(placeHallName(place))
  if (ownerName) return `hall-place-${ownerName}`
  return `hall-place-${place.id || fallbackIndex + 1}`
}

const toHallPois = (spaces, navigablePlaces, fallbackFloorId) => {
  const hallSpaces = spaces.filter(isEligiblePublicExhibitionSpace)
  const hallPlaces = navigablePlaces.filter(isExhibitionHallNavigablePlace)
  const halls = new Map()

  hallPlaces.forEach((place, index) => {
    const matchedSpace = findMatchedHallSpace(place, hallSpaces)
    const entrancePosition = normalizePlacePosition(place)
    const fallbackPosition = matchedSpace ? normalizeSpaceCenter(matchedSpace) : undefined
    const position = entrancePosition || fallbackPosition
    const poiId = createHallPoiId(matchedSpace, place, index)

    if (!position) return

    const existing = halls.get(poiId)
    if (existing) {
      existing.entrances.push({ name: place.name, positionGltf: entrancePosition })
      return
    }

    halls.set(poiId, {
      id: poiId,
      name: matchedSpace?.name || placeHallName(place),
      floorId: String(place.floorId || matchedSpace?.floorId || fallbackFloorId),
      primaryCategory: 'exhibition_hall',
      positionGltf: position,
      sourceConfidence: entrancePosition ? 'backend-sgs-sdk-hall-entrance' : 'backend-sgs-sdk-space-center',
      entrances: [{ name: place.name, positionGltf: entrancePosition }]
    })
  })

  hallSpaces.forEach((space) => {
    const poiId = `hall-${space.id}`
    if (halls.has(poiId)) return
    const position = normalizeSpaceCenter(space)
    if (!position) return
    halls.set(poiId, {
      id: poiId,
      name: space.name,
      floorId: String(space.floorId || fallbackFloorId),
      primaryCategory: 'exhibition_hall',
      positionGltf: position,
      sourceConfidence: 'backend-sgs-sdk-space-center',
      entrances: []
    })
  })

  return Array.from(halls.values())
}

const spaces = [
  { id: 1, name: '展厅1宇宙厅', type: 'exhibition_hall', floorId: 'B2', center: { x: 10, y: 0, z: 20 } },
  { id: 2, name: '巨幕影院', type: 'theater', floorId: 'L1', center: { x: 30, y: 0, z: 40 } },
  { id: 3, name: '博物馆之友活动室', type: 'education_activity', floorId: 'L4', center: { x: 50, y: 0, z: 60 } },
  { id: 4, name: '展览坡道', type: 'ramp', floorId: 'L1.5', center: { x: 70, y: 0, z: 80 } },
  { id: 5, name: '茶水间', type: 'service', floorId: 'L1', center: { x: 90, y: 0, z: 100 } },
  // Finding 3: unmatched exhibition space with center coordinates emits fallback POI
  { id: 6, name: '自然科学展厅', type: 'exhibition_hall', floorId: 'L2', center: { x: 110, y: 0, z: 120 } },
  // Finding 4: space that will match when entrance has no coordinates
  { id: 7, name: '地球科学展厅', type: 'exhibition_hall', floorId: 'L3', center: { x: 130, y: 0, z: 140 } }
]

const places = [
  { id: 101, name: '展厅1宇宙厅 出入口 1', ownerName: '展厅1宇宙厅', floorId: 'B2', position: { x: 11, y: 0, z: 21 }, nodeId: 'n101' },
  { id: 102, name: '巨幕影院 出入口 1', ownerName: '巨幕影院', floorId: 'L1', position: { x: 31, y: 0, z: 41 }, nodeId: 'n102' },
  // Finding 4: entrance with missing coordinates falls back to matched space.center
  { id: 104, name: '地球科学展厅 出入口', ownerName: '地球科学展厅', floorId: 'L3' }
]

const result = toHallPois(spaces, places, 'B2')
const byName = new Map(result.map((poi) => [poi.name, poi]))

// Original coverage
assert.equal(result.length, 6)
assert.deepEqual(byName.get('展厅1宇宙厅').positionGltf, [11, 0, 21])
assert.deepEqual(byName.get('巨幕影院').positionGltf, [31, 0, 41])
assert.deepEqual(byName.get('博物馆之友活动室').positionGltf, [50, 0, 60])
assert.deepEqual(byName.get('展览坡道').positionGltf, [70, 0, 80])
assert.equal(byName.has('茶水间'), false)
assert.equal(byName.get('博物馆之友活动室').sourceConfidence, 'backend-sgs-sdk-space-center')

// Finding 2: whitelist enforcement prevents unrelated types
assert.equal(byName.has('茶水间'), false, 'service type rejected by whitelist')

// Finding 3: unmatched exhibition space with center emits fallback POI
assert.equal(byName.has('自然科学展厅'), true, 'unmatched space-center POI emitted')
assert.deepEqual(byName.get('自然科学展厅').positionGltf, [110, 0, 120])
assert.equal(byName.get('自然科学展厅').sourceConfidence, 'backend-sgs-sdk-space-center')
assert.deepEqual(byName.get('自然科学展厅').entrances, [])

// Finding 4: entrance with missing coordinates falls back to matched space.center
assert.equal(byName.has('地球科学展厅'), true, 'entrance fallback to space.center')
assert.deepEqual(byName.get('地球科学展厅').positionGltf, [130, 0, 140])
assert.equal(byName.get('地球科学展厅').sourceConfidence, 'backend-sgs-sdk-space-center', 'Finding 5: sourceConfidence from space-center not entrance')
// Finding 4: entrance still recorded even with undefined positionGltf (no coordinates)
assert.equal(byName.get('地球科学展厅').entrances[0].name, '地球科学展厅 出入口')
assert.equal(byName.get('地球科学展厅').entrances[0].positionGltf, undefined)

console.log('SGS hall POI adapter smoke check passed')