import { getAllDicitemsAll } from '@/api/data'
import db from '@/utils/localstorage'

const DICT_STORAGE_KEY = 'ALL_DICT_DATA'

// 从 localStorage 恢复字典数据
const restoreDictFromStorage = () => {
  return db.get(DICT_STORAGE_KEY, [])
}

const state = {
  allDictData: restoreDictFromStorage(),
  dictLoaded: restoreDictFromStorage().length > 0,
  loading: false // 添加 loading 锁，防止并发请求
}

const mutations = {
  SET_ALL_DICT_DATA(state, data) {
    state.allDictData = data
    state.dictLoaded = true
    // 持久化到 localStorage
    db.save(DICT_STORAGE_KEY, data)
  },
  SET_LOADING(state, loading) {
    state.loading = loading
  }
}

const actions = {
  // 获取所有字典数据
  async LoadAllDicts({ commit, state }) {
    // 已加载直接返回
    if (state.dictLoaded && state.allDictData.length > 0) {
      return state.allDictData
    }
    // 如果正在加载中，等待加载完成
    if (state.loading) {
      // 轮询等待加载完成
      return new Promise((resolve) => {
        const checkLoaded = setInterval(() => {
          if (!state.loading && state.dictLoaded) {
            clearInterval(checkLoaded)
            resolve(state.allDictData)
          }
        }, 100)
      })
    }
    // 开始加载
    commit('SET_LOADING', true)
    try {
      const response = await getAllDicitemsAll()
      const data = response || []
      commit('SET_ALL_DICT_DATA', data)
      return data
    } catch (error) {
      console.error('加载字典数据失败:', error)
      return []
    } finally {
      commit('SET_LOADING', false)
    }
  }
}

const getters = {
  // 根据类型获取字典
  getDictByType: (state) => (dictType) => {
    // console.log('dicType=', dictType)
    //  console.log('data', state.allDictData)
    return state.allDictData.filter(item => item.dicCode === dictType)
  },
  // 获取所有字典数据
  allDictData: state => state.allDictData,
  // 是否已加载
  dictLoaded: state => state.dictLoaded
}

export default {
  namespaced: true,
  state,
  mutations,
  actions,
  getters
}