From c4f75d5de095dda8ffc202a0e06165949678f85d Mon Sep 17 00:00:00 2001
From: NotBigGhost <ivan@arseniev.info>
Date: Wed, 15 Jul 2026 17:19:07 +0300
Subject: [PATCH] =?UTF-8?q?=D0=9D=D0=B0=D1=81=D1=82=D1=80=D0=BE=D0=B9?=
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Новый хук useRenameGroup (PATCH /api/groups/{id} — эндпойнт уже был на
бэкенде) с инвалидацией всех мест, где видно имя группы (шапка группы,
переключатель групп, главная). В настройках — карточка «Название» с
полем и кнопкой «Сохранить» (по образцу смены ника в аккаунте).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 frontend/src/hooks/groups.ts             | 20 +++++++++++
 frontend/src/pages/GroupSettingsPage.tsx | 45 +++++++++++++++++++++++-
 2 files changed, 64 insertions(+), 1 deletion(-)

diff --git a/frontend/src/hooks/groups.ts b/frontend/src/hooks/groups.ts
index eeaa183..27a3132 100644
--- a/frontend/src/hooks/groups.ts
+++ b/frontend/src/hooks/groups.ts
@@ -75,6 +75,26 @@ export function useCreateGroup() {
   });
 }
 
+export function useRenameGroup(groupId: number) {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async (name: string) =>
+      unwrap(
+        await api.PATCH("/api/groups/{group_id}", {
+          params: { path: { group_id: groupId } },
+          body: { name },
+        }),
+      ),
+    onSuccess: () => {
+      // Имя группы видно в шапке группы, переключателе групп (me), на главной.
+      qc.invalidateQueries({ queryKey: qk.group(groupId) });
+      qc.invalidateQueries({ queryKey: qk.groups });
+      qc.invalidateQueries({ queryKey: qk.me });
+      qc.invalidateQueries({ queryKey: qk.home });
+    },
+  });
+}
+
 export function useSetGroupExpansions(groupId: number) {
   const qc = useQueryClient();
   return useMutation({
diff --git a/frontend/src/pages/GroupSettingsPage.tsx b/frontend/src/pages/GroupSettingsPage.tsx
index f4d7f67..2166844 100644
--- a/frontend/src/pages/GroupSettingsPage.tsx
+++ b/frontend/src/pages/GroupSettingsPage.tsx
@@ -9,7 +9,13 @@ import { Switch } from "../components/Switch";
 import { MAX_GROUP_SIZE } from "../domain/constants";
 import { useToast } from "../context/ToastContext";
 import { useMe } from "../hooks/auth";
-import { useGroup, useGroupMembers, useRemoveMember, useSetGroupExpansions } from "../hooks/groups";
+import {
+  useGroup,
+  useGroupMembers,
+  useRemoveMember,
+  useRenameGroup,
+  useSetGroupExpansions,
+} from "../hooks/groups";
 import { useExpansions } from "../hooks/reference";
 
 export function GroupSettingsPage() {
@@ -19,10 +25,13 @@ export function GroupSettingsPage() {
   const { data: expansions } = useExpansions();
   const { data: members } = useGroupMembers(groupId);
   const setExpansions = useSetGroupExpansions(groupId ?? 0);
+  const renameGroup = useRenameGroup(groupId ?? 0);
   const removeMember = useRemoveMember(groupId ?? 0);
   const toast = useToast();
 
   const [selected, setSelected] = useState<Set<number>>(new Set());
+  // Название редактируется локально; до первого ввода берём значение из группы.
+  const [name, setName] = useState<string | null>(null);
   const [removeTarget, setRemoveTarget] = useState<{ userId: number; nickname: string } | null>(null);
 
   useEffect(() => {
@@ -40,6 +49,20 @@ export function GroupSettingsPage() {
       return next;
     });
 
+  const nameValue = name ?? group.name;
+
+  const saveName = async () => {
+    const trimmed = nameValue.trim();
+    if (!trimmed || trimmed === group.name) return;
+    try {
+      await renameGroup.mutateAsync(trimmed);
+      setName(null);
+      toast.show("Название сохранено");
+    } catch (e) {
+      toast.show(e instanceof ApiError ? e.message : "Ошибка");
+    }
+  };
+
   const saveExpansions = async () => {
     try {
       await setExpansions.mutateAsync([...selected]);
@@ -59,6 +82,26 @@ export function GroupSettingsPage() {
 
   return (
     <div>
+      <div className="card">
+        <h3>Название</h3>
+        <div className="row">
+          <input
+            value={nameValue}
+            onChange={(e) => setName(e.target.value)}
+            onKeyDown={(e) => {
+              if (e.key === "Enter") saveName();
+            }}
+          />
+          <button
+            className="btn btn-primary"
+            onClick={saveName}
+            disabled={renameGroup.isPending || !nameValue.trim() || nameValue.trim() === group.name}
+          >
+            Сохранить
+          </button>
+        </div>
+      </div>
+
       <div className="card">
         <h3>Дополнения</h3>
         <div className="stack">