import { setAccessToken } from '../index'
import { STORAGE_KEY } from '../src/StorageKey'

describe('setAccessToken', () => {
  it('throws an error if there are no tokens stored', () => {
    // GIVEN
    // localStorage is empty
    localStorage.removeItem(STORAGE_KEY)

    // WHEN
    // I call setAccessToken
    // THEN
    // I expect an error to have been thrown
    expect(async () => {
      await setAccessToken('accesstoken')
    }).rejects.toThrow('Unable to update access token since there are no tokens currently stored')
  })

  it('throws an error if the stored tokens cannot be parsed', () => {
    // GIVEN
    // localStorage is empty
    localStorage.setItem(STORAGE_KEY, 'totallynotjson')

    // WHEN
    // I call setAuthTokens
    // THEN
    // I expect an error to be thrown
    expect(async () => {
      await setAccessToken('accesstoken')
    }).rejects.toThrow('Failed to parse auth tokens: totallynotjson')
  })

  it('stores the tokens in localstorage', async () => {
    // GIVEN
    // localStorage is empty
    const tokens = { accessToken: 'accesstoken', refreshToken: 'refreshtoken' }
    localStorage.setItem(STORAGE_KEY, JSON.stringify(tokens))

    // WHEN
    // I call setAccessToken
    await setAccessToken('newaccesstoken')

    // THEN
    // I expect the stored access token to have been updated
    const storedTokens = localStorage.getItem(STORAGE_KEY) as string
    expect(JSON.parse(storedTokens)).toEqual({
      accessToken: 'newaccesstoken',
      refreshToken: 'refreshtoken',
    })
  })
})