chore: add SEND_EMAIL_ERROR exception code for email-related validations

Author: wxg0103

apps/common/constants/exception_code_constants.py

@@ -42,3 +42,4 @@ class ExceptionCodeConstants(Enum):
     PASSWORD_NOT_EQ_RE_PASSWORD = ExceptionCodeConstantsValue(1007,
                                                               _('Password and confirmation password are inconsistent'))
     NICKNAME_IS_EXIST = ExceptionCodeConstantsValue(1008, _('The nickname is already registered'))
+    SEND_EMAIL_ERROR = ExceptionCodeConstantsValue(1009, _("Email sending failed"))

apps/users/serializers/user.py

@@ -1047,9 +1047,9 @@ def is_valid(self, *, raise_exception=False):
         super().is_valid(raise_exception=raise_exception)
         user_exists = QuerySet(User).filter(email=self.data.get('email')).exists()
         if not user_exists and self.data.get('type') == 'reset_password':
-            raise ExceptionCodeConstants.EMAIL_IS_NOT_EXIST.value.to_app_api_exception()
+            raise ExceptionCodeConstants.SEND_EMAIL_ERROR.value.to_app_api_exception()
         elif user_exists and self.data.get('type') == 'register':
-            raise ExceptionCodeConstants.EMAIL_IS_EXIST.value.to_app_api_exception()
+            raise ExceptionCodeConstants.SEND_EMAIL_ERROR.value.to_app_api_exception()
         code_cache_key = self.data.get('email') + ":" + self.data.get("type")
         code_cache_key_lock = code_cache_key + "_lock"
         ttl = cache.ttl(code_cache_key_lock, version=version)