import type {
  MuseumExhibit,
  MuseumHall
} from '@/domain/museum'
import {
  SGS_SCENE_EXPLAIN_DATASET,
  type SgsSceneExhibitMock,
  type SgsSceneSpaceMock
} from '@/data/mock/sgsSceneExplainData'

export interface MuseumContentProvider {
  listExhibits(): Promise<MuseumExhibit[]>
  listHalls(): Promise<MuseumHall[]>
}

const normalizeContentId = (prefix: string, value: string | number) => `${prefix}-sgs-${value}`

const categoryLabelMap: Record<SgsSceneSpaceMock['spaceCategory'], string> = {
  EXHIBITION: '展陈空间',
  EXPERIENCE: '体验空间',
  SERVICE: '服务空间',
  COMMERCIAL: '商业空间',
  EDUCATION: '教育空间',
  CIRCULATION: '公共交通空间',
  BACK_OFFICE: '后勤空间'
}

const boundaryLabelMap: Record<NonNullable<SgsSceneSpaceMock['boundaryStatus']>, string> = {
  DEFINED: '已定义空间边界',
  UNDEFINED: '空间边界待完善'
}

const publicSceneSpaces = SGS_SCENE_EXPLAIN_DATASET.spaces.filter((space) => space.isPublic)
const publicSpaceById = new Map(publicSceneSpaces.map((space) => [space.id, space]))

const formatArea = (area?: number) => (typeof area === 'number' ? `${area}㎡` : undefined)

const hallDescription = (space: SgsSceneSpaceMock) => {
  const category = categoryLabelMap[space.spaceCategory]
  const area = formatArea(space.area)
  const boundary = space.boundaryStatus ? boundaryLabelMap[space.boundaryStatus] : undefined
  const facts = [space.floorLabel, category, area, boundary].filter(Boolean).join(' · ')

  return `${space.name}来自 SGS 前端地图项目“场景设置”的空间管理数据。${facts ? `当前空间信息：${facts}。` : ''}讲解业务据此展示展厅/展区内容，并通过稳定空间、展品与 POI ID 关联到位置预览。`
}

const exhibitDescription = (exhibit: SgsSceneExhibitMock, hall: SgsSceneSpaceMock | undefined) => {
  const facts = [
    exhibit.category,
    exhibit.era,
    exhibit.origin,
    exhibit.zoneName
  ].filter(Boolean).join(' · ')

  return [
    exhibit.description,
    facts ? `展陈信息：${facts}。` : '',
    hall ? `所属空间：${hall.name}（${hall.floorLabel}）。` : ''
  ].filter(Boolean).join('\n\n')
}

const tagsForExhibit = (exhibit: SgsSceneExhibitMock, hall: SgsSceneSpaceMock | undefined) => [
  'SGS场景设置',
  exhibit.category,
  exhibit.zoneName,
  exhibit.audioUrl ? '源数据含音频地址' : '图文讲解',
  hall ? categoryLabelMap[hall.spaceCategory] : undefined
].filter(Boolean) as string[]

const toMuseumHall = (space: SgsSceneSpaceMock): MuseumHall => ({
  id: normalizeContentId('hall', space.id),
  name: space.name,
  floorId: space.floorId,
  floorLabel: space.floorLabel,
  description: hallDescription(space),
  image: '',
  exhibitCount: SGS_SCENE_EXPLAIN_DATASET.exhibits.filter((exhibit) => exhibit.spaceId === space.id).length || space.exhibitCount || 0,
  area: formatArea(space.area),
  poiId: space.poiId
})

const toMuseumExhibit = (exhibit: SgsSceneExhibitMock): MuseumExhibit => {
  const hall = publicSpaceById.get(exhibit.spaceId)

  return {
    id: normalizeContentId('exhibit', exhibit.id),
    name: exhibit.name,
    hallId: hall ? normalizeContentId('hall', hall.id) : undefined,
    hallName: hall?.name || exhibit.spaceName,
    floorId: hall?.floorId || SGS_SCENE_EXPLAIN_DATASET.floorId,
    floorLabel: hall?.floorLabel || SGS_SCENE_EXPLAIN_DATASET.floorLabel,
    image: '',
    description: exhibitDescription(exhibit, hall),
    poiId: exhibit.poiId || hall?.poiId,
    year: exhibit.era,
    material: exhibit.origin,
    size: exhibit.code,
    tags: tagsForExhibit(exhibit, hall)
  }
}

export class StaticMuseumContentProvider implements MuseumContentProvider {
  async listExhibits() {
    return SGS_SCENE_EXPLAIN_DATASET.exhibits.map(toMuseumExhibit)
  }

  async listHalls() {
    return publicSceneSpaces.map(toMuseumHall)
  }
}

export const staticMuseumContentProvider = new StaticMuseumContentProvider()