feat: add command to generate template configuration file

cmd/cleura/configcmd/config.go

@@ -142,11 +142,12 @@ func TrySetConfigFromFile(c *cli.Context) error {
 func Command() *cli.Command {
 	return &cli.Command{
 		Name:        "config",
-		Description: "Command used for preparing cleura cli credentials and setting default parameter values",
+		Description: "Command used for working with configuration file for the cleura cli",
 		Subcommands: []*cli.Command{
 			setCommand(),
 			listCommand(),
 			showActiveCommand(),
+			generateConfigTemplateCommand(),
 		},
 	}
 }

cmd/cleura/configcmd/genconftmplcmd.go

@@ -0,0 +1,52 @@
+package configcmd
+
+import (
+	"os"
+
+	"github.com/aztekas/cleura-client-go/cmd/cleura/utils"
+	"github.com/urfave/cli/v2"
+	"gopkg.in/yaml.v2"
+)
+
+func generateConfigTemplateCommand() *cli.Command {
+	return &cli.Command{
+		Name:        "generate-template",
+		Description: "Generate configuration file template on the given path",
+		Usage:       "Generate configuration file template on the given path",
+		Flags: []cli.Flag{
+			&cli.StringFlag{
+				Name:    "output-file",
+				Aliases: []string{"o"},
+				Usage:   "Path to configuration file. $HOME/.config/cleura/config if not set. NB: Overwrites existing if found",
+			},
+		},
+		Action: func(ctx *cli.Context) error {
+			config := &Config{
+				ActiveConfig: "default",
+				Configurations: map[string]Configuration{
+					"default": {},
+				},
+			}
+			templateByte, err := yaml.Marshal(config)
+			if err != nil {
+				return err
+			}
+			path, err := utils.ChoosePath(ctx.String("output-file"))
+			if err != nil {
+				return err
+			}
+			f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE, 0600)
+			if err != nil {
+				return err
+			}
+			if _, err := f.Write(templateByte); err != nil {
+				f.Close() // ignore error; Write error takes precedence
+				return err
+			}
+			if err := f.Close(); err != nil {
+				return err
+			}
+			return nil
+		},
+	}
+}

cmd/cleura/utils/utils.go

@@ -16,8 +16,8 @@ func GetDefaultConfigPath() (string, error) {
 	return filepath.Join(homedir, ".config", "cleura", "config"), nil
 }
 
-// Choose path for the configuration file. Choose `--path PATH` if supplied
-// otherwise set default user directory
+// Choose path for the configuration file. Choose path` if supplied
+// otherwise set path within default user directory
 func ChoosePath(path string) (string, error) {
 	var err error
 	if path == "" {