// Copyright 2024 PingCAP, Inc.
//
// 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 data

import (
	"math/rand"

	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)

const (
	nsBaseName = "e2e-tidb-operator"
)

// NewNamespace returns a random namespace object for testing.
func NewNamespace() *v1.Namespace {
	return &v1.Namespace{
		ObjectMeta: metav1.ObjectMeta{
			Name: nsBaseName + "-" + randString(5), //nolint:mnd // refactor to a constant if needed
		},
	}
}

func randString(n int) string {
	const letterBytes = "abcdefghijklmnopqrstuvwxyz"
	b := make([]byte, n)
	for i := range b {
		//nolint:gosec // no need to use cryptographically secure random number generator
		b[i] = letterBytes[rand.Intn(len(letterBytes))]
	}
	return string(b)
}