module.exports = authenticationBeforeRequest

function authenticationBeforeRequest (state, options) {
  if (!state.auth.type) {
    return
  }

  if (state.auth.type === 'basic') {
    const hash = Buffer.from(
      `${state.auth.username}:${state.auth.password}`, 'ascii'
    ).toString('base64')
    options.headers['authorization'] = `Basic ${hash}`
    return
  }

  if (state.auth.type === 'token') {
    options.headers['authorization'] = `token ${state.auth.token}`
    return
  }

  if (state.auth.type === 'integration') {
    options.headers['authorization'] = `Bearer ${state.auth.token}`
    options.headers['accept'] = 'application/vnd.github.machine-man-preview+json'
    return
  }

  options.url += options.url.indexOf('?') === -1 ? '?' : '&'

  if (state.auth.token) {
    options.url += `access_token=${encodeURIComponent(state.auth.token)}`
    return
  }

  const key = encodeURIComponent(state.auth.key)
  const secret = encodeURIComponent(state.auth.secret)
  options.url += `client_id=${key}&client_secret=${secret}`
}