const axios = require('axios')
const config = require('@config/index')
const baseURL = `https://api.twitch.tv/helix`
const client = axios.create({
  baseURL,
  headers: {
    'Client-ID': config.twitch.clientid
  }
})

const tokenHeader = (token) => {
  if (typeof token !== 'string' || token.trim().length === 0) return null
  return {
    'Authorization': `Bearer ${token}`
  }
}

module.exports.getUserData = async (token = '') => {
  let headers = tokenHeader(token)
  if (headers === null) return null
  let url = '/users'

  let result = await client({
    method: 'get',
    headers,
    url
  })

  if (!('data' in result) || !('data' in result.data) || !Array.isArray(result.data.data)) return null
  if (result.data.data.length === 0) return null
  return result.data.data[0]
}