text: // Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  import api from '../api'
  import * as cache from './cache'
  
  export default async function() {
    const storedToken = cache.get('accessToken')
    let token
  
    if (!storedToken || Date.parse(storedToken.expiry) < Date.now()) {
      // If we don't have a token stored or it's expired, we want to retrieve it
  
      // Remove stored, invalid token
      clear()
  
      // Retrieve new token and store it
      const response = await api.console.token()
      token = response.data
      cache.set('accessToken', token)
      return token
    }
  
    // If we have a stored token and its valid, we want to use it
    return storedToken
  }
  
  export function clear() {
    cache.remove('accessToken')
  }
  