使用Firebase Auth对用户进行身份验证后，是否有更好的方法从数据库中获取用户？

Question

使用Firebase Auth（带有REST），并具有一个单独的firebase数据库，用于存储无法存储在auth中的其他用户信息。注册或登录后，我需要将状态设置为当前用户。

我设法使其正常运行，但是只能通过从数据库中获取所有用户，然后一直循环直到Firebase Auth的Uid匹配。然后提交突变以设置用户。这似乎很笨拙。有更好的方法吗？

import Vuex from 'vuex'
import axios from '@/axios-auth'
import globalAxios from 'axios'

Vue.use(Vuex)

export default new Vuex.Store({
  state: {
    idToken: null,
    userId: null,
    user: null
  },
  mutations: {
    authUser(state, userData) {
      state.idToken = userData.token
      state.userId = userData.userId
    },
    SET_USER(state, payload) {
      state.user = payload
    }
  },
  actions: {
    signUp({ commit, dispatch }, authData) {
      axios
        .post('/signupNewUser?key=[API KEY]', {
          email: authData.email,
          password: authData.password,
          returnSecureToken: true
        })
        .then(res => {
          console.log(res)
          commit('authUser', {
            token: res.data.idToken,
            userId: res.data.localId
          })
          dispatch('storeUser', authData)
        })
        .catch(error => console.log(error))
    },
    storeUser({ commit, state }, userData) {
      console.log(userData)
      if (!state.idToken) {
        return
      }
      globalAxios.post('/users.json' + '?auth=' + state.idToken, {
        name: userData.name,
        email: userData.email,
        username: userData.username,
        userId: state.userId
      })
      commit('SET_USER', { user: userData })
    },
    login({ commit, dispatch }, authData) {
      axios
        .post('/verifyPassword?key=[API KEY]', {
          email: authData.email,
          password: authData.password,
          returnSecureToken: true
        })
        .then(res => {
          console.log(res)
          commit('authUser', {
            token: res.data.idToken,
            userId: res.data.localId
          })
          dispatch('fetchUser', authData)
        })
        .catch(error => console.log(error))
    },
    fetchUser({ commit, state }, payload) {
      globalAxios.get('/users.json?auth=' + state.idToken).then(res => {
        const data = res.data
        const users = []
        let cuser = {}
        for (let key in data) {
          const user = data[key]
          if (user.userId === state.userId) {
            cuser = user
          }
          user.id = key
          users.push(user)
        }
        commit('SET_USER', { user: cuser })
      })
    }
  },
  getters: {}
})```