fix: update user plan and rearrange structur project

internal/utilities/utils/auth.go

@@ -0,0 +1,32 @@
+package utils
+
+import (
+	"fmt"
+
+	"github.com/golang-jwt/jwt/v5"
+	"golang.org/x/crypto/bcrypt"
+)
+
+func VerifyToken(signature string) jwt.Keyfunc {
+	return func(token *jwt.Token) (any, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
+		}
+
+		return []byte(signature), nil
+	}
+}
+
+func HashPassword(password string) (string, error) {
+	// Hashing the password with a cost of 14 (default)
+	hash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		return "", err
+	}
+	return string(hash), nil
+}
+
+func ComparePassword(storedPassword, inputPassword string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(storedPassword), []byte(inputPassword))
+	return err == nil
+}