링크로 로그인하기 구현 완료

backend/internal/handler/auth_handler.go

@@ -35,6 +35,7 @@ const (
 	prefixLoginCodeSmsTarget = "login_code_sms_target:"
 	prefixLoginCodeSmsLookup = "login_code_sms_lookup:"
 	prefixLoginCodeShort     = "login_code_short:"
+	prefixLoginCodeSmsOnly   = "login_code_sms_only:"
 	prefixPollMeta           = "poll_meta:"
 	prefixSignupEmail        = "signup:email:"
 	prefixSignupPhone        = "signup:phone:"
@@ -630,6 +631,11 @@ func (h *AuthHandler) InitEnchantedLink(c *fiber.Ctx) error {
 		if init.LoginID != "" {
 			keyLoginID = init.LoginID
 		}
+		if !strings.Contains(loginID, "@") && req.CodeOnly {
+			_ = h.RedisService.Set(prefixLoginCodeSmsOnly+keyLoginID, "1", loginCodeExpiration)
+		} else {
+			_ = h.RedisService.Delete(prefixLoginCodeSmsOnly + keyLoginID)
+		}
 		if init.FlowID != "" {
 			_ = h.RedisService.Set(prefixLoginCode+keyLoginID, init.FlowID, loginCodeExpiration)
 		}
@@ -644,6 +650,9 @@ func (h *AuthHandler) InitEnchantedLink(c *fiber.Ctx) error {
 		if !init.ExpiresAt.IsZero() {
 			expiresIn = int(time.Until(init.ExpiresAt).Seconds())
 		}
+		if expiresIn <= 0 {
+			expiresIn = int(loginCodeExpiration.Seconds())
+		}
 		return c.JSON(fiber.Map{
 			"linkId":      "Sent",
 			"pendingRef":  pendingRef,
@@ -1609,10 +1618,13 @@ type shortLoginCodePayload struct {
 }
 
 func (h *AuthHandler) buildKratosShortSmsBody(req *kratosCourierRequest, loginID, phone string) string {
-	_, link, ok := h.prepareKratosShortLogin(req, loginID)
+	shortCode, link, ok := h.prepareKratosShortLogin(req, loginID)
 	if !ok {
 		return ""
 	}
+	if h.isSmsCodeOnly(loginID) {
+		return fmt.Sprintf("[Baron 통합로그인] 로그인 코드: %s", shortCode)
+	}
 	return fmt.Sprintf("[Baron 통합로그인] %s", link)
 }
 
@@ -1667,6 +1679,14 @@ func (h *AuthHandler) prepareKratosShortLogin(req *kratosCourierRequest, loginID
 	return shortCode, link, true
 }
 
+func (h *AuthHandler) isSmsCodeOnly(loginID string) bool {
+	if loginID == "" {
+		return false
+	}
+	val, _ := h.RedisService.Get(prefixLoginCodeSmsOnly + loginID)
+	return val != ""
+}
+
 func (h *AuthHandler) generateShortCode(code string) string {
 	const letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 	for i := 0; i < 10; i++ {