feat: add validate command

cmd/cmd.go

@@ -1,7 +1,6 @@
 package cmd
 
 import (
-	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
 
@@ -25,21 +24,5 @@ func Execute() error {
 
 func init() {
 	rootCmd.AddCommand(runCmd)
-}
-
-func NewLogger(verbose int) *logrus.Logger {
-	log := logrus.New()
-
-	var level logrus.Level
-	switch verbose {
-	case 0:
-		level = logrus.WarnLevel
-	case 1:
-		level = logrus.InfoLevel
-	default:
-		level = logrus.TraceLevel
-	}
-	log.SetLevel(level)
-
-	return log
+	rootCmd.AddCommand(validateCmd)
 }

cmd/run.go

@@ -45,7 +45,7 @@ func Run(log *logrus.Logger) (err error) {
 	internal.AutoSu()
 
 	// Read config from --config cfgFile.
-	param, err := readConfig()
+	param, err := readConfig(cfgFile)
 	if err != nil {
 		return fmt.Errorf("readConfig: %w", err)
 	}
@@ -100,7 +100,7 @@ func Run(log *logrus.Logger) (err error) {
 	return nil
 }
 
-func readConfig() (params *config.Params, err error) {
+func readConfig(cfgFile string) (params *config.Params, err error) {
 	b, err := os.ReadFile(cfgFile)
 	if err != nil {
 		return nil, err

cmd/validate.go

@@ -0,0 +1,36 @@
+/*
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Copyright (c) since 2023, mzz2017 <mzz@tuta.io>
+ */
+
+package cmd
+
+import (
+	"fmt"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"os"
+)
+
+var (
+	validateCmd = &cobra.Command{
+		Use:   "validate",
+		Short: "Validate dae config",
+		Run: func(cmd *cobra.Command, args []string) {
+			if cfgFile == "" {
+				logrus.Fatalln("Argument \"--config\" or \"-c\" is required but not provided.")
+			}
+			// Read config from --config cfgFile.
+			_, err := readConfig(cfgFile)
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			fmt.Println("OK")
+		},
+	}
+)
+
+func init() {
+	validateCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "", "config file")
+}