refactor: Creare RandomPassword in random_utils and use in `slu rando…

…m password`

cmd/random/password/password.go

@@ -3,8 +3,6 @@ package password
 import (
 	"fmt"
 	"log"
-	"strings"
-	"unicode"
 
 	random_cmd "github.com/sikalabs/slu/cmd/random"
 	"github.com/sikalabs/slu/utils/random_utils"
@@ -18,60 +16,14 @@ var Cmd = &cobra.Command{
 	Aliases: []string{"pwd", "passwd", "pass"},
 	Args:    cobra.NoArgs,
 	Run: func(c *cobra.Command, args []string) {
-		i := 0
-		for {
-			s := random_utils.RandomString(16, random_utils.ALL)
-			if containsLowercase(s) && containsUpercase(s) && containsDigit(s) {
-				fmt.Println(addUnderscores(s))
-				break
-			}
-			if i > 20 {
-				log.Fatalln("Cannot generate password")
-			}
+		password, err := random_utils.RandomPassword()
+		if err != nil {
+			log.Fatal(err)
 		}
+		fmt.Println(password)
 	},
 }
 
 func init() {
 	random_cmd.Cmd.AddCommand(Cmd)
 }
-
-func containsLowercase(s string) bool {
-	for _, r := range s {
-		if unicode.IsLower(r) {
-			return true
-		}
-	}
-	return false
-}
-
-func containsUpercase(s string) bool {
-	for _, r := range s {
-		if unicode.IsLower(r) {
-			return true
-		}
-	}
-	return false
-}
-
-func containsDigit(s string) bool {
-	for _, r := range s {
-		if unicode.IsDigit(r) {
-			return true
-		}
-	}
-	return false
-}
-
-func addUnderscores(input string) string {
-	var blocks []string
-	for i := 0; i < len(input); i += 4 {
-		end := i + 4
-		if end > len(input) {
-			end = len(input)
-		}
-		blocks = append(blocks, input[i:end])
-	}
-
-	return strings.Join(blocks, "_")
-}

utils/random_utils/random_password_utils.go

@@ -0,0 +1,60 @@
+package random_utils
+
+import (
+	"fmt"
+	"strings"
+	"unicode"
+)
+
+func RandomPassword() (string, error) {
+	i := 0
+	for {
+		s := RandomString(16, ALL)
+		if containsLowercase(s) && containsUpercase(s) && containsDigit(s) {
+			return addUnderscores(s), nil
+		}
+		if i > 20 {
+			return "", fmt.Errorf("cannot generate password")
+		}
+	}
+}
+
+func containsLowercase(s string) bool {
+	for _, r := range s {
+		if unicode.IsLower(r) {
+			return true
+		}
+	}
+	return false
+}
+
+func containsUpercase(s string) bool {
+	for _, r := range s {
+		if unicode.IsLower(r) {
+			return true
+		}
+	}
+	return false
+}
+
+func containsDigit(s string) bool {
+	for _, r := range s {
+		if unicode.IsDigit(r) {
+			return true
+		}
+	}
+	return false
+}
+
+func addUnderscores(input string) string {
+	var blocks []string
+	for i := 0; i < len(input); i += 4 {
+		end := i + 4
+		if end > len(input) {
+			end = len(input)
+		}
+		blocks = append(blocks, input[i:end])
+	}
+
+	return strings.Join(blocks, "_")
+}