Modernize command

Signed-off-by: Knut Ahlers <knut@ahlers.me>

dice/go.mod

@@ -5,6 +5,7 @@ go 1.21
 require (
 	github.com/Luzifer/rconfig/v2 v2.4.0
 	github.com/Luzifer/twitch-bot/v3 v3.17.0
+	github.com/pkg/errors v0.9.1
 	github.com/sirupsen/logrus v1.9.3
 )
 
@@ -28,7 +29,6 @@ require (
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/mitchellh/hashstructure/v2 v2.0.2 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/robfig/cron/v3 v3.0.1 // indirect

dice/go.sum

@@ -22,7 +22,6 @@ github.com/go-irc/irc v2.1.0+incompatible/go.mod h1:jJILTRy8s/qOvusiKifAEfhQMVwf
 github.com/go-sql-driver/mysql v1.7.0/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
 github.com/go-sql-driver/mysql v1.7.1 h1:lUIinVbN1DY0xBg0eMOzmmtGoHwWBbvnWubQUrtU8EI=
 github.com/go-sql-driver/mysql v1.7.1/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
-github.com/gofrs/uuid v4.4.0+incompatible h1:3qXRTX8/NbyulANqlc0lchS1gqAVxRgsuW1YrTJupqA=
 github.com/gofrs/uuid/v3 v3.1.2 h1:V3IBv1oU82x6YIr5txe3azVHgmOKYdyKQTowm9moBlY=
 github.com/gofrs/uuid/v3 v3.1.2/go.mod h1:xPwMqoocQ1L5G6pXX5BcE7N5jlzn2o19oqAKxwZW/kI=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=

dice/main.go

@@ -9,7 +9,8 @@ import (
 	"os"
 	"text/template"
 
-	log "github.com/sirupsen/logrus"
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
 
 	"github.com/Luzifer/rconfig/v2"
 	"github.com/Luzifer/twitch-bot/v3/plugins"
@@ -29,51 +30,59 @@ var (
 	version = "dev"
 )
 
-func init() {
+func initApp() error {
 	rconfig.AutoEnv(true)
 	rconfig.SetVariableDefaults(map[string]string{
 		"tpl": `I threw {{.count}}x {{if eq .type "coin"}}coin{{else}}W{{.sides}}{{end}} for you and got:{{ range .results}} {{ if eq $.type "coin" }}{{ if eq . 1 }}Head{{ else }}Number{{ end }}{{ else }}{{ . }}{{ end }}{{ end }}`,
 	})
+
 	if err := rconfig.ParseAndValidate(&cfg); err != nil {
-		log.Fatalf("Unable to parse commandline options: %s", err)
+		return errors.Wrap(err, "parsing cli options")
 	}
 
-	if cfg.VersionAndExit {
+	l, err := logrus.ParseLevel(cfg.LogLevel)
-		fmt.Printf("dice %s\n", version)
+	if err != nil {
-		os.Exit(0)
+		return errors.Wrap(err, "parsing log-level")
 	}
+	logrus.SetLevel(l)
 
-	if l, err := log.ParseLevel(cfg.LogLevel); err != nil {
+	return nil
-		log.WithError(err).Fatal("Unable to parse log level")
-	} else {
-		log.SetLevel(l)
-	}
 }
 
 func main() {
 	var (
+		err     error
 		results []int64
 		sum     int64
 	)
 
+	if err = initApp(); err != nil {
+		logrus.WithError(err).Fatal("initializing app")
+	}
+
+	if cfg.VersionAndExit {
+		logrus.WithField("version", version).Info("twitch-bot-tools/dice")
+		os.Exit(0)
+	}
+
 	switch cfg.Type {
 	case "coin":
-		results, sum = getResults(2, cfg.Count)
+		results, sum = getResults(2, cfg.Count) //nolint:gomnd // Makes no sense to extract
 
 	case "dice":
 		if cfg.Sides == 0 {
 			// There is no [0..0] dice.
-			log.Fatal("There is no 0-sided dice")
+			logrus.Fatal("there is no 0-sided dice")
 		}
 		results, sum = getResults(cfg.Sides, cfg.Count)
 
 	default:
-		log.WithField("type", cfg.Type).Fatal("Don't know how to throw that")
+		logrus.WithField("type", cfg.Type).Fatal("don't know how to throw that")
 	}
 
 	t, err := template.New("output").Parse(cfg.Template)
 	if err != nil {
-		log.WithError(err).Fatal("Unable to parse template")
+		logrus.WithError(err).Fatal("parsing template")
 	}
 
 	text := new(bytes.Buffer)
@@ -84,11 +93,11 @@ func main() {
 		"sum":     sum,
 		"type":    cfg.Type,
 	}); err != nil {
-		log.WithError(err).Fatal("Unable to execute template")
+		logrus.WithError(err).Fatal("executing template")
 	}
 
 	if !cfg.BotRespond {
-		fmt.Println(text.String())
+		fmt.Println(text.String()) //nolint:forbidigo // This is an expected stdout output
 		return
 	}
 
@@ -102,7 +111,7 @@ func main() {
 	}
 
 	if err = json.NewEncoder(os.Stdout).Encode(output); err != nil {
-		log.WithError(err).Fatal("Unable to encode bot response")
+		logrus.WithError(err).Fatal("encoding bot response")
 	}
 }