/*
Copyright 2019 The Kubernetes Authors.
Licensed 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 (
	"strings"

	"github.com/pkg/errors"
	"k8s.io/apimachinery/pkg/util/validation"
)

// ValidateDriverName validates the driver name
func ValidateDriverName(driverName string) error {
	if len(driverName) == 0 {
		return errors.New("driver name is empty")
	}

	if len(driverName) > 63 {
		return errors.New("driver name length should be less than 63 chars")
	}
	var err error
	for _, msg := range validation.IsDNS1123Subdomain(strings.ToLower(driverName)) {
		if err == nil {
			err = errors.New(msg)
			continue
		}
		err = errors.Wrap(err, msg)
	}
	return err
}