access token from auth0provider outside of react components

Question

I'm using the auth0 token provided by the user on login to make api calls via useAuth0.getTokenSilently.

In this example, fetchTodoList, addTodoItem, and updateTodoItem all require a token for authorization. I'd like to be able to extract these functions out in to a separate file (like utils/api-client.js and import them without having to explicitly pass in the token.

import React, { useContext } from 'react'
import { Link, useParams } from 'react-router-dom'
import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
import { faCircle, faList } from '@fortawesome/free-solid-svg-icons'
import axios from 'axios'
import { queryCache, useMutation, useQuery } from 'react-query'
import { TodoItem } from '../models/TodoItem'
import { TodoInput } from './TodoInput'
import { TodoList as TodoListComponent } from './TodoList'
import { TodoListsContext } from '../store/todolists'
import { TodoListName } from './TodoListName'
import { TodoList } from '../models/TodoList'
import { useAuth0 } from '../utils/react-auth0-wrapper'

export const EditTodoList = () => {

  const { getTokenSilently } = useAuth0()

  const fetchTodoList = async (todoListId: number): Promise<TodoList> => {
    try {
      const token = await getTokenSilently!()

      const { data } = await axios.get(
        `/api/TodoLists/${todoListId}`,
        {
          headers: {
            Authorization: `Bearer ${token}`
          }
        }
      )
      return data
    } catch (error) {
      return error
    }
  }

  const addTodoItem = async (todoItem: TodoItem): Promise<TodoItem> => {
    try {
      const token = await getTokenSilently!()

      const { data } = await axios.post(
        '/api/TodoItems',
        todoItem,
        {
          headers: {
            Authorization: `Bearer ${token}`,
          }
        }
      )
      return data
    } catch (addTodoListError) {
      return addTodoListError
    }
  }

  const updateTodoItem = async (todoItem: TodoItem) => {
    try {
      const token = await getTokenSilently!()

      const { data } = await axios.put(
        '/api/TodoItems',
        todoItem,
        {
          headers: {
            Authorization: `Bearer ${token}`,
          }
        }
      )
      return data
    } catch (addTodoListError) {
      return addTodoListError
    }
  }

  const [updateTodoItemMutation] = useMutation(updateTodoItem, {
    onSuccess: () => {
      queryCache.refetchQueries(['todoList', todoListId])
    }
  })

  const [addTodoItemMutation] = useMutation(addTodoItem, {
    onSuccess: () => {
      console.log('success')
      queryCache.refetchQueries(['todoList', todoListId])
    }
  })

  const onAddTodoItem = async (todoItem: TodoItem) => {
    try {
      await addTodoItemMutation({ 
        ...todoItem, 
        todoListId: parseInt(todoListId, 10) 
      })
    } catch (error) {
      // Uh oh, something went wrong
    }
  }

  const { todoListId } = useParams()
  const { status, data: todoList, error } = useQuery(['todoList', todoListId], () => fetchTodoList(todoListId))
  const { todoLists, setTodoList } = useContext(TodoListsContext)
  const todoListIndex = todoLists.findIndex(
    list => todoListId === list.id.toString()
  )

  const setTodoItems = (todoItems: TodoItem[]) => {
    // if(todoList) {
    //   const list = { ...todoList, todoItems }
    //   setTodoList(todoListIndex, list)
    // }
  }

  const setTodoListName = (name: string) => {
    // setTodoList(todoListIndex, { ...todoList, name })
  }

  return (
    <>
      <Link className="block flex align-items-center mt-8" to="/">
        <span className="fa-layers fa-fw fa-3x block m-auto group">
          <FontAwesomeIcon 
            icon={faCircle} 
            className="text-teal-500 transition-all duration-200 ease-in-out group-hover:text-teal-600" 
          />
          <FontAwesomeIcon icon={faList} inverse transform="shrink-8" />
        </span>
      </Link>

      {status === 'success' && !!todoList && (
        <>
          <TodoListName
            todoListName={todoList.name}
            setTodoListName={setTodoListName}
          />
          <TodoInput 
            onAddTodoItem={onAddTodoItem} 
          />

          <TodoListComponent
            todoItems={todoList.todoItems}
            setTodoItems={setTodoItems}
            updateTodo={updateTodoItemMutation}
          />
        </>
      )}
    </>
  )
}

Here's a link to the repo: https://github.com/gpspake/todo-client

Answer 1

I was having a similar issue on how to use getAccessTokenSilently outside of a React component, what I ended up with was this:

My HTTP client wrapper

export class HttpClient {
  constructor() {
    HttpClient.instance = axios.create({ baseURL: process.env.API_BASE_URL });

    HttpClient.instance.interceptors.request.use(
      async config => {
        const token = await this.getToken();

        return {
          ...config,
          headers: { ...config.headers, Authorization: `Bearer ${token}` },
        };
      },
      error => {
        Promise.reject(error);
      },
    );

    return this;
  }

  setTokenGenerator(tokenGenerator) {
    this.tokenGenerator = tokenGenerator;
    return this;
  }

  getToken() {
    return this.tokenGenerator();
  }
}

On my App root, I pass the getAccessTokenSilently from auth0

 useEffect(() => {
    httpClient.setTokenGenerator(getAccessTokenSilently);
  }, [getAccessTokenSilently]);

And that's it!

You now have an axios instance ready to do authenticated requests with