module Restforce
  class Middleware::RaiseError < Faraday::Response::Middleware
    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

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

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