class Restforce::Middleware::RaiseError

def body
  @body ||= JSON.parse(@env[:body])
end

def message
  "#{body.first['errorCode']}: #{body.first['message']}"
end

def on_complete(env)
  @env = env
  case env[:status]
  when 404
    raise Faraday::Error::ResourceNotFound, message
  when 401
    raise Restforce::UnauthorizedError, message
  when 400...600
    raise Faraday::Error::ClientError, message
  end
end