import Vue from 'vue'
import Vuex from 'vuex'

Vue.use(Vuex)

const store = new Vuex.Store({
  state: {
    token: '',
    userId: '',
    role: 'student',
    alumniVerify: 'pending',
    classId: '',
    name: '',
    nickname: '',
    phone: '',
    newUser: false
  },
  getters: {
    // 单一可信源：优先 store，store 空时兜底读 storage（热启动/HBuilderX 热更新场景 store 可能未恢复）
    isLoggedIn: function(state) {
      if (state.token) return true
      return !!uni.getStorageSync('token')
    },
    isVerified: function(state) {
      return state.alumniVerify === 'accepted'
    },
    hasClass: function(state) {
      return state.classId !== '' && state.classId !== null
    }
  },
  mutations: {
    setToken(state, token) {
      state.token = token
      uni.setStorageSync('token', token)
    },
    setUserInfo(state, userInfo) {
      state.userId = userInfo.userId
      state.role = userInfo.role || 'student'
      state.alumniVerify = userInfo.alumniVerify || 'pending'
      state.classId = userInfo.classId || ''
      state.name = userInfo.name || ''
      state.nickname = userInfo.nickname || ''
      state.phone = userInfo.phone || ''
      state.newUser = userInfo.newUser || false
      uni.setStorageSync('userId', userInfo.userId)
      uni.setStorageSync('role', state.role)
      uni.setStorageSync('alumniVerify', state.alumniVerify)
      uni.setStorageSync('classId', state.classId)
      uni.setStorageSync('userInfo', {
        userId: userInfo.userId,
        role: state.role,
        alumniVerify: state.alumniVerify,
        classId: state.classId,
        name: state.name,
        nickname: state.nickname,
        phone: state.phone
      })
    },
    setClassId(state, classId) {
      state.classId = classId
      uni.setStorageSync('classId', classId)
    },
    setAlumniVerify(state, status) {
      state.alumniVerify = status
      uni.setStorageSync('alumniVerify', status)
      var userInfo = uni.getStorageSync('userInfo') || {}
      userInfo.alumniVerify = status
      uni.setStorageSync('userInfo', userInfo)
    },
    logout(state) {
      state.token = ''
      state.userId = ''
      state.role = 'student'
      state.alumniVerify = 'pending'
      state.classId = ''
      state.name = ''
      state.nickname = ''
      state.phone = ''
      state.newUser = false
      uni.removeStorageSync('token')
      uni.removeStorageSync('userId')
      uni.removeStorageSync('role')
      uni.removeStorageSync('alumniVerify')
      uni.removeStorageSync('classId')
      uni.removeStorageSync('userInfo')
    }
  },
  actions: {
    login({ commit }, data) {
      commit('setToken', data.token)
      commit('setUserInfo', {
        userId: data.userId,
        role: data.role,
        alumniVerify: data.alumniVerify,
        classId: data.classId,
        name: data.name,
        nickname: data.nickname,
        phone: data.phone,
        newUser: data.newUser
      })
    },
    // 冷启动/热更新后从 storage 恢复登录态到 store，保证 state 与 storage 一致
    restore({ commit }) {
      var token = uni.getStorageSync('token')
      if (!token) return
      commit('setToken', token)
      var userInfo = uni.getStorageSync('userInfo')
      if (userInfo) {
        commit('setUserInfo', userInfo)
      }
      var classId = uni.getStorageSync('classId')
      if (classId) {
        commit('setClassId', classId)
      }
    }
  }
})

export default store