import { create } from 'zustand'
import { persist } from 'zustand/middleware'
import { STORE_NAMES } from './storeNames'
import { setUserDefine } from '@/lib/utils/api-common'

interface LuxunStore {
  // 存储每个场景（place）的已访问展品ID集合
  // 格式：{ place1: Set<1, 2>, place2: Set<1, 2>, ... }
  visitedExhibits: Record<string, Set<number>>

  // 体悟模块当前路由（reflection / reflection2 / reflection3）
  reflectionRoute: string
  setReflectionRoute: (route: string) => void

  // 上次访问的场景（place1~place4）
  lastVisitedPlace: string | null
  setLastVisitedPlace: (place: string) => void

  // 标记展品为已访问
  markExhibitVisited: (place: string, exhibitId: number) => void

  // 检查展品是否已访问
  isExhibitVisited: (place: string, exhibitId: number) => boolean

  // 获取某个场景已访问的展品ID数组
  getVisitedExhibits: (place: string) => number[]

  // 重置某个场景的访问记录
  resetPlace: (place: string) => void

  // 重置所有访问记录
  resetAll: () => void
}

// 将 Set 转换为数组以便序列化
const serializeVisitedExhibits = (
  visitedExhibits: Record<string, Set<number>>
): Record<string, number[]> => {
  const serialized: Record<string, number[]> = {}
  for (const [place, exhibits] of Object.entries(visitedExhibits)) {
    serialized[place] = Array.from(exhibits)
  }
  return serialized
}

// 将数组转换回 Set
const deserializeVisitedExhibits = (
  serialized: Record<string, number[]> | undefined
): Record<string, Set<number>> => {
  if (!serialized || typeof serialized !== 'object') {
    return {}
  }
  const visitedExhibits: Record<string, Set<number>> = {}
  for (const [place, exhibits] of Object.entries(serialized)) {
    if (Array.isArray(exhibits)) {
      visitedExhibits[place] = new Set(exhibits)
    } else {
      visitedExhibits[place] = new Set()
    }
  }
  return visitedExhibits
}

export const useLuxunStore = create<LuxunStore>()(
  persist(
    (set, get) => ({
      visitedExhibits: {},
      reflectionRoute: 'reflection',
      lastVisitedPlace: null,

      markExhibitVisited: (place: string, exhibitId: number) => {
        set((state) => {
          const currentExhibits = state.visitedExhibits[place] || new Set<number>()
          if (!currentExhibits.has(exhibitId)) {
            const newExhibits = {
              ...state.visitedExhibits,
              [place]: new Set([...currentExhibits, exhibitId]),
            }
            return { visitedExhibits: newExhibits }
          }
          return state
        })
      },

      isExhibitVisited: (place: string, exhibitId: number) => {
        const { visitedExhibits } = get()
        return visitedExhibits[place]?.has(exhibitId) || false
      },

      getVisitedExhibits: (place: string) => {
        const { visitedExhibits } = get()
        return Array.from(visitedExhibits[place] || [])
      },

      resetPlace: (place: string) => {
        set((state) => {
          const newExhibits = { ...state.visitedExhibits }
          delete newExhibits[place]
          return { visitedExhibits: newExhibits }
        })
      },

      resetAll: () => {
        set({ visitedExhibits: {} })
      },

      setLastVisitedPlace: (place: string) => set({ lastVisitedPlace: place }),
      setReflectionRoute: (route: string) => set({ reflectionRoute: route }),
    }),
    {
      name: STORE_NAMES.LUXUN,
      partialize: (state) => ({
        visitedExhibits: serializeVisitedExhibits(state.visitedExhibits),
        lastVisitedPlace: state.lastVisitedPlace,
        reflectionRoute: state.reflectionRoute,
      }),
      onRehydrateStorage: () => (state) => {
        if (state) {
          state.visitedExhibits = deserializeVisitedExhibits(state.visitedExhibits as any)
          if (state.lastVisitedPlace === undefined) {
            state.lastVisitedPlace = null
          }
          if ((state as any).reflectionRoute === undefined) {
            ;(state as any).reflectionRoute = 'reflection'
          }
        }
      },
    }
  )
)

// ========== 易班平台数据保存（对话模块） ==========
export const LUXUN_LESSON_ID = 'Lux_duihua'
export const LUXUN_KEY = 7

export const saveLuxunStore = (): void => {
  const state = useLuxunStore.getState()

  const payload = {
    visitedExhibits: serializeVisitedExhibits(state.visitedExhibits),
    lastVisitedPlace: state.lastVisitedPlace,
    reflectionRoute: state.reflectionRoute,
  }

  try {
    setUserDefine(LUXUN_LESSON_ID, LUXUN_KEY, JSON.stringify(payload))
  } catch (error) {
    console.error('Failed to save Luxun store', error)
  }
}