let handleUserLoginCallbacks = (data, success, error) => {
  let { username, password } = data
  server.login(username, password, (userdata) => {
    success(userdata)
  }, (err) => {
    if (err.needsAuth) {
      let requestAuth = (authType) => {
        app.requestUserAuth(authType, (authData) => {
          authResponse(authData)
        }, (requestAuthError) => {
          error(requestAuthError)
        })
      }
      let authResponse = (authData) => {
        server.authenticate(authData, (userdata) => {
          success(userdata)
        }, (authError) => {
          if (authError.needsAuth) {
            requestAuth(authError.authType)
          } else {
            error(err)
          }
        })
      }
      requestAuth(err.authType)
    } else {
      error(err)
    }
  })
}