add generating secret key utility

cmd/security.go

@@ -0,0 +1,49 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/urfave/cli/v2"
+
+	"github.com/mayswind/ezbookkeeping/pkg/utils"
+)
+
+// SecurityUtils represents the security command
+var SecurityUtils = &cli.Command{
+	Name:  "security",
+	Usage: "ezBookkeeping security utilities",
+	Subcommands: []*cli.Command{
+		{
+			Name:   "gen-secret-key",
+			Usage:  "Generate a random secret key",
+			Action: genSecretKey,
+			Flags: []cli.Flag{
+				&cli.IntFlag{
+					Name:        "length",
+					Aliases:     []string{"l"},
+					Required:    false,
+					DefaultText: "32",
+					Usage:       "The length of secret key",
+				},
+			},
+		},
+	},
+}
+
+func genSecretKey(c *cli.Context) error {
+	length := c.Int("length")
+
+	if length <= 0 {
+		length = 32
+	}
+
+	secretKey, err := utils.GetRandomNumberOrLetter(length)
+
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("[Secret Key] %s\n", secretKey)
+
+	return nil
+}