{:ok, scopes} <- validate_scopes(app, params),
{:ok, auth} <- Authorization.create_authorization(app, user, scopes),
{:ok, token} <- Token.exchange_token(app, auth) do
{:ok, scopes} <- validate_scopes(app, params),
{:ok, auth} <- Authorization.create_authorization(app, user, scopes),
{:ok, token} <- Token.exchange_token(app, auth) do