// Copyright 2018 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 version

import (
	"fmt"
	"runtime"

	genericversion "k8s.io/apimachinery/pkg/version"
)

// these come from ldflags
var (
	gitVersion   = "v0.0.0-master+$Format:%h$"
	gitCommit    = "$Format:%H$"          // sha1 from git, output of $(git rev-parse HEAD)
	gitTreeState = ""                     // state of git tree, either "clean" or "dirty"
	buildDate    = "1970-01-01T00:00:00Z" // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
)

// VersionInfo returns the version information for metrics-server.
func VersionInfo() *genericversion.Info {
	return &genericversion.Info{
		GitVersion:   gitVersion,
		GitCommit:    gitCommit,
		GitTreeState: gitTreeState,
		BuildDate:    buildDate,
		GoVersion:    runtime.Version(),
		Compiler:     runtime.Compiler,
		Platform:     fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH),
	}
}