settings: Move check_settings_values to user_settings.py.

This commit moves check_settings_values to user_settings.py
from validator.py such that we can import the functions at
the top without any issue of cyclic imports.

zerver/lib/validator.py

@@ -582,36 +582,3 @@ def check_string_or_int(var_name: str, val: object) -> Union[str, int]:
         return val
 
     raise ValidationError(_("{var_name} is not a string or integer").format(var_name=var_name))
-
-
-def check_settings_values(
-    notification_sound: Optional[str],
-    email_notifications_batching_period_seconds: Optional[int],
-    default_language: Optional[str] = None,
-) -> None:
-    from zerver.lib.actions import get_available_notification_sounds
-    from zerver.lib.i18n import get_available_language_codes
-
-    # We can't use REQ for this widget because
-    # get_available_language_codes requires provisioning to be
-    # complete.
-    if default_language is not None and default_language not in get_available_language_codes():
-        raise JsonableError(_("Invalid default_language"))
-
-    if (
-        notification_sound is not None
-        and notification_sound not in get_available_notification_sounds()
-        and notification_sound != "none"
-    ):
-        raise JsonableError(_("Invalid notification sound '{}'").format(notification_sound))
-
-    if email_notifications_batching_period_seconds is not None and (
-        email_notifications_batching_period_seconds <= 0
-        or email_notifications_batching_period_seconds > 7 * 24 * 60 * 60
-    ):
-        # We set a limit of one week for the batching period
-        raise JsonableError(
-            _("Invalid email batching period: {} seconds").format(
-                email_notifications_batching_period_seconds
-            )
-        )

zerver/views/realm.py

@@ -31,12 +31,12 @@ from zerver.lib.validator import (
     check_dict,
     check_int,
     check_int_in,
-    check_settings_values,
     check_string_in,
     check_string_or_int,
     to_non_negative_int,
 )
 from zerver.models import Realm, RealmUserDefault, UserProfile
+from zerver.views.user_settings import check_settings_values
 
 
 @require_realm_admin

zerver/views/user_settings.py

@@ -26,6 +26,7 @@ from zerver.lib.actions import (
     do_change_user_setting,
     do_regenerate_api_key,
     do_start_email_change_process,
+    get_available_notification_sounds,
 )
 from zerver.lib.avatar import avatar_url
 from zerver.lib.email_validation import (
@@ -34,17 +35,12 @@ from zerver.lib.email_validation import (
     validate_email_not_already_in_realm,
 )
 from zerver.lib.exceptions import JsonableError, RateLimited
+from zerver.lib.i18n import get_available_language_codes
 from zerver.lib.request import REQ, has_request_variables
 from zerver.lib.response import json_success
 from zerver.lib.send_email import FromAddress, send_email
 from zerver.lib.upload import upload_avatar_image
-from zerver.lib.validator import (
-    check_bool,
-    check_int,
-    check_int_in,
-    check_settings_values,
-    check_string_in,
-)
+from zerver.lib.validator import check_bool, check_int, check_int_in, check_string_in
 from zerver.models import UserProfile, avatar_changes_disabled, name_changes_disabled
 from zproject.backends import check_password_strength, email_belongs_to_ldap
 
@@ -93,6 +89,36 @@ emojiset_choices = {emojiset["key"] for emojiset in UserProfile.emojiset_choices
 default_view_options = ["recent_topics", "all_messages"]
 
 
+def check_settings_values(
+    notification_sound: Optional[str],
+    email_notifications_batching_period_seconds: Optional[int],
+    default_language: Optional[str] = None,
+) -> None:
+    # We can't use REQ for this widget because
+    # get_available_language_codes requires provisioning to be
+    # complete.
+    if default_language is not None and default_language not in get_available_language_codes():
+        raise JsonableError(_("Invalid default_language"))
+
+    if (
+        notification_sound is not None
+        and notification_sound not in get_available_notification_sounds()
+        and notification_sound != "none"
+    ):
+        raise JsonableError(_("Invalid notification sound '{}'").format(notification_sound))
+
+    if email_notifications_batching_period_seconds is not None and (
+        email_notifications_batching_period_seconds <= 0
+        or email_notifications_batching_period_seconds > 7 * 24 * 60 * 60
+    ):
+        # We set a limit of one week for the batching period
+        raise JsonableError(
+            _("Invalid email batching period: {} seconds").format(
+                email_notifications_batching_period_seconds
+            )
+        )
+
+
 @human_users_only
 @has_request_variables
 def json_change_settings(