Grouped Notifications UI (#30440)

Co-authored-by: Eugen Rochko <eugen@zeonfederated.com>
Co-authored-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/mastodon/features/notifications_v2/components/notification_mention.tsx

@@ -0,0 +1,55 @@
+import { FormattedMessage } from 'react-intl';
+
+import ReplyIcon from '@/material-icons/400-24px/reply-fill.svg?react';
+import type { StatusVisibility } from 'mastodon/api_types/statuses';
+import type { NotificationGroupMention } from 'mastodon/models/notification_group';
+import { useAppSelector } from 'mastodon/store';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationWithStatus } from './notification_with_status';
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.mention'
+    defaultMessage='{name} mentioned you'
+    values={values}
+  />
+);
+
+const privateMentionLabelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.private_mention'
+    defaultMessage='{name} privately mentioned you'
+    values={values}
+  />
+);
+
+export const NotificationMention: React.FC<{
+  notification: NotificationGroupMention;
+  unread: boolean;
+}> = ({ notification, unread }) => {
+  const statusVisibility = useAppSelector(
+    (state) =>
+      state.statuses.getIn([
+        notification.statusId,
+        'visibility',
+      ]) as StatusVisibility,
+  );
+
+  return (
+    <NotificationWithStatus
+      type='mention'
+      icon={ReplyIcon}
+      iconId='reply'
+      accountIds={notification.sampleAccountIds}
+      count={notification.notifications_count}
+      statusId={notification.statusId}
+      labelRenderer={
+        statusVisibility === 'direct'
+          ? privateMentionLabelRenderer
+          : labelRenderer
+      }
+      unread={unread}
+    />
+  );
+};