@kweli/cs-rest/src/axios-factory.js

const axios = require('axios')
const get = require('lodash.get')
const FormDataFactory = require('./handlers/form-data-factory')

function getInstance (options) {
  const instance = axios.create(options)

  instance.interceptors.response.use(response => {
    const otcsticket = get(response, 'headers.otcsticket')

    if (otcsticket) {
      instance.defaults.headers.common.OTCSTicket = otcsticket
    }
    return response
  }, error => {
    return Promise.reject(error)
  })

  return instance
}

function axiosFactory (options) {
  const instance = getInstance(options)

  const username = get(options, 'username')
  const password = get(options, 'password')
  const otcsticket = get(options, 'otcsticket')

  if (otcsticket) {
    instance.defaults.headers.common.OTCSTicket = otcsticket
  } else if (username && password) {
    instance.interceptors.request.use(async request => {
      if (request.headers.common.OTCSTicket) {
        return request
      } else {
        const formData = FormDataFactory.createFormData()

        formData.append('username', username)
        formData.append('password', password)

        const response = process.node
          ? await axios.post(`${options.baseURL}/api/v1/auth/`, formData.getBuffer(), { headers: formData.getHeaders() })
          : await axios.post(`${options.baseURL}/api/v1/auth/`, formData)

        request.headers.common.OTCSTicket = get(response, 'data.ticket')

        return request
      }
    })
  } else {
    throw Error('You must provide an otcsticket or username and password.')
  }

  return instance
}

module.exports = axiosFactory