pkg/util/input.go

// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package util

import (
	"errors"
	"io"
	"strings"

	"github.com/elastic/cloud-sdk-go/pkg/input"
	"github.com/elastic/cloud-sdk-go/pkg/output"
)

// AskForConfirmation scans the stdin for "y" or "yes" (case insensitive)
func AskForConfirmation(reader io.Reader, out *output.Device) bool {
	var scanner = input.NewScanner(reader, out)
	var s = strings.TrimSpace(strings.ToLower(scanner.Scan("Do you want to continue [y/n]: ")))
	return strings.HasPrefix(s, "y")
}

// ReadMFAToken reads an MFA token
func ReadMFAToken(reader io.Reader, out *output.Device) (string, error) {
	token := input.NewScanner(reader, out).Scan("Enter MFA token: ")
	if len(token) != 6 {
		return "", errors.New("auth: token must be 6 characters long")
	}
	return token, nil
}