main.go

// SPDX-FileCopyrightText: 2023 Kalle Fagerberg
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along
// with this program.  If not, see <http://www.gnu.org/licenses/>.

package main

import (
	_ "embed"
	"runtime/debug"
	"strings"

	"github.com/applejag/kubectl-klock/cmd"

	// Initiate client auth plugins
	_ "k8s.io/client-go/plugin/pkg/client/auth"
	_ "k8s.io/client-go/plugin/pkg/client/auth/exec"
)

// set via ldflags
var version string

func main() {
	cmd.Version = getVersion()
	cmd.InitAndExecute()
}

func getVersion() string {
	if trimmed := strings.TrimSpace(version); trimmed != "" {
		return trimmed
	}
	if info, ok := debug.ReadBuildInfo(); ok {
		if info.Main.Version != "(devel)" {
			return info.Main.Version
		}
		if v, ok := getVCSBuildVersion(info); ok {
			return v
		}
	}
	return "(unset)"
}

func getVCSBuildVersion(info *debug.BuildInfo) (string, bool) {
	var (
		revision string
		dirty    string
	)
	for _, v := range info.Settings {
		switch v.Key {
		case "vcs.revision":
			revision = v.Value
		case "vcs.modified":
			dirty = " (dirty)"
		}
	}
	if revision == "" {
		return "", false
	}
	return revision + dirty, true
}