feat(config-revisions): implement configuration history for Firewall, GRE, and WireGuard

- Added configuration history management for Firewall, GRE, and WireGuard pages, enabling users to view and restore previous configurations.
- Introduced new components for displaying configuration history and integrated them into the respective pages.
- Enhanced API routes to support fetching and restoring configuration revisions, ensuring data consistency across the application.
- Updated state management to handle loading and restoring states effectively, improving user experience during data operations.
- Enhanced tests to cover new functionalities and ensure reliability.

Co-authored-by: Cursor <[email protected]>

app/(main)/firewall/page.tsx

@@ -49,12 +49,14 @@ import {
   PowerIcon, CheckCircleIcon,
   PlayIcon, SquareIcon, RotateCcwIcon, ZapIcon,
   CheckCircle2Icon, XCircleIcon, MinusCircleIcon, SkipForwardIcon,
-  SlidersHorizontalIcon, RefreshCwIcon,
+  SlidersHorizontalIcon, RefreshCwIcon, HistoryIcon,
 } from "lucide-react"
 import { CodeExportSheet } from "@/components/reui-kit/code-export-sheet"
 import { ServerRailLayout, ServerRailMobileButton } from "@/components/server-rail-layout"
 import { ALL_SERVERS_ID, type ServerTileItem } from "@/components/server-tile-rail"
 import { toast } from "sonner"
+import { ConfigHistorySheet } from "@/components/config-history-sheet"
+import type { ConfigRevisionDto } from "@/lib/config-revisions"
 
 // ─── Types ────────────────────────────────────────────────────────────────────
 
@@ -1947,6 +1949,10 @@ function FirewallPageInner() {
   const [exportOpen, setExportOpen] = useState(false)
   const [editingAddr, setEditingAddr] = useState<Partial<AddressListEntry> | null>(null)
   const [addrSheetOpen, setAddrSheetOpen] = useState(false)
+  const [historyOpen, setHistoryOpen] = useState(false)
+  const [revisions, setRevisions] = useState<ConfigRevisionDto[]>([])
+  const [historyLoading, setHistoryLoading] = useState(false)
+  const [historyRestoring, setHistoryRestoring] = useState(false)
 
   const loadLive = useCallback(async () => {
     if (!isLive) return
@@ -1970,6 +1976,42 @@ function FirewallPageInner() {
     }
   }, [isLive, apiFetch])
 
+  const historyServerId = selectedServerId === ALL_SERVERS_ID ? null : selectedServerId
+
+  const loadRevisions = useCallback(async () => {
+    if (!isLive || !historyServerId) return
+    setHistoryLoading(true)
+    try {
+      const res = await apiFetch<{ revisions: ConfigRevisionDto[] }>(
+        `/api/firewall/revisions?serverId=${encodeURIComponent(historyServerId)}`,
+      )
+      setRevisions(res.revisions)
+    } catch (err) {
+      toast.error("Не удалось загрузить историю", { description: String(err) })
+      setRevisions([])
+    } finally {
+      setHistoryLoading(false)
+    }
+  }, [isLive, historyServerId, apiFetch])
+
+  const restoreRevision = useCallback(async (id: string) => {
+    if (!isLive || !historyServerId) return
+    setHistoryRestoring(true)
+    try {
+      await apiFetch(
+        `/api/firewall/revisions/${encodeURIComponent(id)}/restore`,
+        { method: "POST", body: JSON.stringify({ serverId: historyServerId }) },
+      )
+      toast.success("Версия применена на роутер")
+      await loadLive()
+      await loadRevisions()
+    } catch (err) {
+      toast.error("Не удалось откатить", { description: String(err) })
+    } finally {
+      setHistoryRestoring(false)
+    }
+  }, [isLive, historyServerId, apiFetch, loadLive, loadRevisions])
+
   useEffect(() => {
     if (!isLive) {
       queueMicrotask(() => {
@@ -2373,6 +2415,19 @@ function FirewallPageInner() {
                 <RefreshCwIcon className={cn("size-4", dataLoading && "animate-spin")} />
                 Обновить
               </Button>
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={() => {
+                  setHistoryOpen(true)
+                  void loadRevisions()
+                }}
+                disabled={!isLive || !historyServerId || dataLoading}
+                title={!historyServerId ? "Выберите сервер, чтобы смотреть историю" : "История версий и откат на CHR"}
+              >
+                <HistoryIcon className="size-4" />
+                История
+              </Button>
               <Button variant="outline" size="sm" onClick={() => setExportOpen(true)}>
                 <CodeXmlIcon className="size-4" />Экспорт .rsc
               </Button>
@@ -2586,6 +2641,17 @@ function FirewallPageInner() {
         onClose={() => setExportOpen(false)}
         rules={familyRules}
       />
+
+      <ConfigHistorySheet
+        open={historyOpen}
+        onOpenChange={setHistoryOpen}
+        title="История Firewall"
+        itemLabel="объектов"
+        revisions={revisions}
+        loading={historyLoading}
+        restoring={historyRestoring}
+        onRestore={restoreRevision}
+      />
     </>
   )
 }

app/(main)/gre/page.tsx

@@ -13,11 +13,23 @@ import { useDataSource } from "@/lib/data-source"
 import { requestJson } from "@/shared/api/http-client"
 import { cn } from "@/lib/utils"
 import { toast } from "sonner"
-import { Frame, FramePanel } from "@/components/reui/frame"
 import { KpiStatGrid } from "@/components/reui-kit/kpi-stat-grid"
 import { OpsPanel } from "@/components/ops-panel"
 import { Button } from "@/components/ui/button"
 import { Input } from "@/components/ui/input"
+import { ConfigHistorySheet } from "@/components/config-history-sheet"
+import type { ConfigRevisionDto } from "@/lib/config-revisions"
+import {
+  AlertDialog,
+  AlertDialogAction,
+  AlertDialogCancel,
+  AlertDialogContent,
+  AlertDialogDescription,
+  AlertDialogFooter,
+  AlertDialogHeader,
+  AlertDialogMedia,
+  AlertDialogTitle,
+} from "@/components/ui/alert-dialog"
 import {
   Sheet, SheetContent, SheetHeader, SheetTitle,
   SheetDescription, SheetFooter, SheetClose,
@@ -31,7 +43,7 @@ import {
   LockIcon, LockOpenIcon, ShieldCheckIcon, NetworkIcon,
   EyeIcon, EyeOffIcon, ChevronDownIcon, ChevronRightIcon,
   CodeXmlIcon, PencilIcon, PowerIcon, Trash2Icon,
-  DatabaseIcon,
+  DatabaseIcon, HistoryIcon, TriangleAlertIcon,
 } from "lucide-react"
 import { CodeExportSheet } from "@/components/reui-kit/code-export-sheet"
 import { ServerRailLayout, ServerRailMobileButton } from "@/components/server-rail-layout"
@@ -164,6 +176,7 @@ interface BackendServer {
 
 interface GreTunnelsApiResponse {
   tunnels: GreTunnel[]
+  failures?: Array<{ serverId: string; serverName?: string; error: string }>
 }
 
 function makeApiFetch(backendUrl: string) {
@@ -244,6 +257,15 @@ export default function GrePage() {
   const [selectedServerId, setSelectedServerId] = useState(ALL_SERVERS_ID)
 
   const [tunnelOpen,      setTunnelOpen]      = useState(false)
+  const [tunnelMode,      setTunnelMode]      = useState<"create" | "edit">("create")
+  const [editingTunnel,   setEditingTunnel]   = useState<GreTunnel | null>(null)
+  const [pendingDelete,   setPendingDelete]   = useState<GreTunnel | null>(null)
+  const [mutateBusy,      setMutateBusy]      = useState(false)
+  const [liveStale,       setLiveStale]       = useState(false)
+  const [historyOpen,     setHistoryOpen]     = useState(false)
+  const [revisions,       setRevisions]       = useState<ConfigRevisionDto[]>([])
+  const [historyLoading,  setHistoryLoading]  = useState(false)
+  const [historyRestoring, setHistoryRestoring] = useState(false)
   const [poolOpen,        setPoolOpen]        = useState(false)
   const [codePreviewTunnel, setCodePreviewTunnel] = useState<GreTunnel | null>(null)
 
@@ -260,14 +282,19 @@ export default function GrePage() {
     try {
       const [backendServers, greRes] = await Promise.all([
         apiFetch<BackendServer[]>("/api/servers"),
-        apiFetch<GreTunnelsApiResponse>("/api/filters/gre-tunnels"),
+        apiFetch<GreTunnelsApiResponse>("/api/gre/tunnels"),
       ])
       setLiveServers(backendServers.map(mapBackendToServer))
       setLiveTunnels(greRes.tunnels)
+      setLiveStale(false)
+      if (greRes.failures?.length) {
+        toast.warning(
+          `Не удалось опросить: ${greRes.failures.map((f) => f.serverName ?? f.serverId).join(", ")}`,
+        )
+      }
     } catch (e) {
       setDataError(e instanceof Error ? e.message : "Ошибка загрузки")
-      setLiveServers([])
-      setLiveTunnels([])
+      setLiveStale(true)
     } finally {
       setDataLoading(false)
     }
@@ -279,6 +306,7 @@ export default function GrePage() {
         setLiveServers([])
         setLiveTunnels([])
         setDataError(null)
+        setLiveStale(false)
       })
       return
     }
@@ -322,6 +350,187 @@ export default function GrePage() {
     [displayPools],
   )
 
+  const historyServerId = selectedServerId === ALL_SERVERS_ID ? null : selectedServerId
+  const mutationsLocked = isLive && (mutateBusy || liveStale || historyRestoring)
+
+  const loadRevisions = useCallback(async () => {
+    if (!isLive || !historyServerId) return
+    setHistoryLoading(true)
+    try {
+      const res = await apiFetch<{ revisions: ConfigRevisionDto[] }>(
+        `/api/gre/revisions?serverId=${encodeURIComponent(historyServerId)}`,
+      )
+      setRevisions(res.revisions)
+    } catch (err) {
+      toast.error("Не удалось загрузить историю", { description: String(err) })
+      setRevisions([])
+    } finally {
+      setHistoryLoading(false)
+    }
+  }, [isLive, historyServerId, apiFetch])
+
+  const restoreRevision = useCallback(async (id: string) => {
+    if (!isLive || !historyServerId) return
+    setHistoryRestoring(true)
+    try {
+      await apiFetch(
+        `/api/gre/revisions/${encodeURIComponent(id)}/restore`,
+        { method: "POST", body: JSON.stringify({ serverId: historyServerId }) },
+      )
+      toast.success("Версия применена на роутер")
+      await loadLive()
+      await loadRevisions()
+    } catch (err) {
+      toast.error("Не удалось откатить", { description: String(err) })
+    } finally {
+      setHistoryRestoring(false)
+    }
+  }, [isLive, historyServerId, apiFetch, loadLive, loadRevisions])
+
+  function tunnelWriteBody(form: typeof defaultTunnelForm) {
+    return {
+      serverId: form.serverId,
+      name: form.name.trim(),
+      localAddress: form.localAddress.trim() || undefined,
+      remoteAddress: form.remoteAddress.trim(),
+      localInnerIp: form.localInnerIp.trim() || undefined,
+      remoteInnerIp: form.remoteInnerIp.trim() || undefined,
+      comment: form.comment || undefined,
+      enabled: form.enabled,
+      mtu: form.mtu,
+      keepaliveInterval: form.keepaliveInterval,
+      keepaliveRetries: form.keepaliveRetries,
+      dscp: form.dscp,
+      clampTcpMss: form.clampTcpMss,
+      allowFastPath: form.allowFastPath,
+      ipsecSecret: form.ipsecEnabled ? form.ipsecSecret : undefined,
+    }
+  }
+
+  async function submitTunnel() {
+    if (!isLive) {
+      toast.info("Создание на роутер доступно только в live-режиме")
+      return
+    }
+    if (liveStale) {
+      toast.error("Роутер недоступен — изменения заблокированы")
+      return
+    }
+    if (!tForm.name.trim() || !tForm.serverId || !tForm.remoteAddress.trim()) {
+      toast.error("Заполните имя, сервер и удалённый адрес")
+      return
+    }
+    if (tForm.ipsecEnabled && tForm.ipsecSecret.trim().length < 8) {
+      toast.error("Для IPsec нужен PSK не короче 8 символов")
+      return
+    }
+    setMutateBusy(true)
+    try {
+      if (tunnelMode === "edit" && editingTunnel) {
+        await apiFetch("/api/gre/tunnels", {
+          method: "PATCH",
+          body: JSON.stringify({
+            ...tunnelWriteBody(tForm),
+            rosId: editingTunnel.id,
+            name: editingTunnel.name,
+          }),
+        })
+        toast.success(`Туннель ${tForm.name} обновлён`)
+      } else {
+        await apiFetch("/api/gre/tunnels", {
+          method: "POST",
+          body: JSON.stringify(tunnelWriteBody(tForm)),
+        })
+        toast.success(`Туннель ${tForm.name} создан`)
+      }
+      setTunnelOpen(false)
+      setEditingTunnel(null)
+      await loadLive()
+    } catch (err) {
+      toast.error("Не удалось сохранить туннель", { description: String(err) })
+    } finally {
+      setMutateBusy(false)
+    }
+  }
+
+  async function toggleTunnel(t: GreTunnel) {
+    if (!isLive || mutationsLocked) return
+    setMutateBusy(true)
+    try {
+      await apiFetch("/api/gre/tunnels", {
+        method: "PATCH",
+        body: JSON.stringify({
+          serverId: t.serverId,
+          rosId: t.id,
+          name: t.name,
+          enabled: !t.enabled,
+          remoteAddress: t.remoteAddress,
+        }),
+      })
+      toast.success(t.enabled ? `Выключен ${t.name}` : `Включён ${t.name}`)
+      await loadLive()
+    } catch (err) {
+      toast.error("Не удалось изменить туннель", { description: String(err) })
+    } finally {
+      setMutateBusy(false)
+    }
+  }
+
+  async function confirmDeleteTunnel() {
+    const t = pendingDelete
+    if (!t || !isLive) return
+    setMutateBusy(true)
+    try {
+      await apiFetch("/api/gre/tunnels", {
+        method: "DELETE",
+        body: JSON.stringify({ serverId: t.serverId, rosId: t.id, name: t.name }),
+      })
+      toast.success(`Удалён ${t.name}`)
+      setPendingDelete(null)
+      await loadLive()
+    } catch (err) {
+      toast.error("Не удалось удалить туннель", { description: String(err) })
+    } finally {
+      setMutateBusy(false)
+    }
+  }
+
+  function openCreateTunnel() {
+    setTunnelMode("create")
+    setEditingTunnel(null)
+    setTForm({
+      ...defaultTunnelForm,
+      serverId: selectedServerId === ALL_SERVERS_ID ? "" : selectedServerId,
+    })
+    setTunnelOpen(true)
+  }
+
+  function openEditTunnel(t: GreTunnel) {
+    setTunnelMode("edit")
+    setEditingTunnel(t)
+    setTForm({
+      ...defaultTunnelForm,
+      name: t.name,
+      serverId: t.serverId,
+      localAddress: t.localAddress === "0.0.0.0" ? "" : t.localAddress,
+      remoteAddress: t.remoteAddress,
+      poolId: t.poolId === "live" ? "" : t.poolId,
+      localInnerIp: t.localInnerIp,
+      remoteInnerIp: t.remoteInnerIp,
+      comment: t.comment,
+      enabled: t.enabled,
+      ipsecEnabled: !!t.ipsec,
+      ipsecSecret: t.ipsec?.secret ?? "",
+      mtu: t.mtu,
+      keepaliveInterval: t.keepaliveInterval,
+      keepaliveRetries: t.keepaliveRetries,
+      dscp: String(t.dscp),
+      clampTcpMss: t.clampTcpMss,
+      allowFastPath: t.allowFastPath,
+    })
+    setTunnelOpen(true)
+  }
+
   useEffect(() => {
     if (dataError) toast.error(dataError)
   }, [dataError])
@@ -368,6 +577,14 @@ export default function GrePage() {
       showAll
       allCount={displayServers.length}
       loading={isLive && dataLoading && displayServers.length === 0}
+      banner={
+        isLive && liveStale ? (
+          <div className="shrink-0 border-b border-amber-500/30 bg-amber-500/10 px-6 py-2.5 text-xs text-amber-700 dark:text-amber-400 flex items-center gap-2">
+            <TriangleAlertIcon className="size-3.5 shrink-0" />
+            Роутер недоступен — показан кэш. Изменения заблокированы, пока не удастся прочитать CHR.
+          </div>
+        ) : null
+      }
       header={
         <PageHeader
           crumbs={[{ label: "Управление" }, { label: "GRE-туннели" }]}
@@ -384,7 +601,20 @@ export default function GrePage() {
                 <RefreshCwIcon className={cn("size-4", dataLoading && "animate-spin")} />
                 Обновить
               </Button>
-              <Button size="sm" onClick={() => { setTForm(defaultTunnelForm); setTunnelOpen(true) }}>
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={() => {
+                  setHistoryOpen(true)
+                  void loadRevisions()
+                }}
+                disabled={!isLive || !historyServerId || dataLoading}
+                title={!historyServerId ? "Выберите сервер, чтобы смотреть историю" : "История версий и откат на CHR"}
+              >
+                <HistoryIcon className="size-4" />
+                История
+              </Button>
+              <Button size="sm" onClick={openCreateTunnel} disabled={mutateBusy}>
                 <PlusIcon className="size-4" />Добавить туннель
               </Button>
             </>
@@ -476,6 +706,10 @@ export default function GrePage() {
                 servers={displayServers}
                 pools={displayPools}
                 onCodePreview={setCodePreviewTunnel}
+                onEdit={openEditTunnel}
+                onToggle={(t) => { void toggleTunnel(t) }}
+                onDelete={setPendingDelete}
+                mutationsLocked={mutationsLocked}
               />
             </DataPageCard>
           )}
@@ -593,18 +827,18 @@ export default function GrePage() {
       <Sheet open={tunnelOpen} onOpenChange={setTunnelOpen}>
         <SheetContent side="right" className="w-full sm:max-w-lg flex flex-col gap-0 p-0">
           <SheetHeader className="px-6 pt-6 pb-4 border-b shrink-0">
-            <SheetTitle>Новый GRE-туннель</SheetTitle>
-            <SheetDescription>RouterOS 7.20+ · /interface gre add</SheetDescription>
+            <SheetTitle>{tunnelMode === "edit" ? "Редактировать GRE-туннель" : "Новый GRE-туннель"}</SheetTitle>
+            <SheetDescription>RouterOS 7.20+ · /interface gre {tunnelMode === "edit" ? "set" : "add"}</SheetDescription>
           </SheetHeader>
 
           <div className="flex-1 overflow-y-auto px-6 py-5 flex flex-col gap-5">
             <div className="flex flex-col gap-4">
               <SectionTitle>Основные</SectionTitle>
               <FormField label="Имя интерфейса" required hint="Только латиница, цифры и дефис, например gre-msk-spb">
-                <Input className="font-mono" placeholder="gre-msk-spb" value={tForm.name} onChange={(e) => setT("name", e.target.value)} />
+                <Input className="font-mono" placeholder="gre-msk-spb" value={tForm.name} disabled={tunnelMode === "edit"} onChange={(e) => setT("name", e.target.value)} />
               </FormField>
               <FormField label="Сервер (MikroTik)" required>
-                <select value={tForm.serverId} onChange={(e) => setT("serverId", e.target.value)}
+                <select value={tForm.serverId} onChange={(e) => setT("serverId", e.target.value)} disabled={tunnelMode === "edit"}
                   className="h-8 w-full rounded-lg border border-input bg-background px-2.5 text-sm text-foreground outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50">
                   <option value="" disabled>Выбрать сервер…</option>
                   {displayServers.map((s) => <option key={s.id} value={s.id}>{s.name} ({s.site})</option>)}
@@ -631,7 +865,7 @@ export default function GrePage() {
 
             <div className="flex flex-col gap-4">
               <SectionTitle>Внутренний IP</SectionTitle>
-              <FormField label="IP-пул" required hint="Из какого пула выделяется /30-блок">
+              <FormField label="IP-пул" hint="Необязательно — внутренний IP можно указать вручную">
                 <select value={tForm.poolId} onChange={(e) => setT("poolId", e.target.value)}
                   className="h-8 w-full rounded-lg border border-input bg-background px-2.5 text-sm text-foreground outline-none focus-visible:border-ring focus-visible:ring-3 focus-visible:ring-ring/50">
                   <option value="" disabled>Выбрать пул…</option>
@@ -753,7 +987,9 @@ export default function GrePage() {
 
           <SheetFooter className="px-6 py-4 border-t shrink-0 flex-row gap-2">
             <SheetClose render={<Button variant="outline" className="flex-1" />}>Отмена</SheetClose>
-            <Button className="flex-1" onClick={() => setTunnelOpen(false)}>Создать туннель</Button>
+            <Button className="flex-1" onClick={() => void submitTunnel()} disabled={mutateBusy}>
+              {tunnelMode === "edit" ? "Сохранить" : "Создать туннель"}
+            </Button>
           </SheetFooter>
         </SheetContent>
       </Sheet>
@@ -800,6 +1036,39 @@ export default function GrePage() {
           </SheetFooter>
         </SheetContent>
       </Sheet>
+
+      <ConfigHistorySheet
+        open={historyOpen}
+        onOpenChange={setHistoryOpen}
+        title="История GRE"
+        itemLabel="туннелей"
+        revisions={revisions}
+        loading={historyLoading}
+        restoring={historyRestoring}
+        onRestore={restoreRevision}
+      />
+
+      <AlertDialog open={!!pendingDelete} onOpenChange={(v) => { if (!v) setPendingDelete(null) }}>
+        <AlertDialogContent size="default">
+          <AlertDialogHeader>
+            <AlertDialogMedia className="bg-destructive/10 text-destructive">
+              <Trash2Icon />
+            </AlertDialogMedia>
+            <AlertDialogTitle>Удалить GRE-туннель?</AlertDialogTitle>
+            <AlertDialogDescription>
+              {pendingDelete
+                ? `${pendingDelete.name} на сервере ${serverById[pendingDelete.serverId]?.name ?? pendingDelete.serverId}. Будут удалены интерфейс и связанный /ip/address.`
+                : null}
+            </AlertDialogDescription>
+          </AlertDialogHeader>
+          <AlertDialogFooter>
+            <AlertDialogCancel onClick={() => setPendingDelete(null)}>Отмена</AlertDialogCancel>
+            <AlertDialogAction variant="destructive" onClick={() => void confirmDeleteTunnel()}>
+              Удалить
+            </AlertDialogAction>
+          </AlertDialogFooter>
+        </AlertDialogContent>
+      </AlertDialog>
     </>
   )
 }

app/(main)/wireguard/page.tsx

@@ -57,10 +57,12 @@ import {
   type ServerTileItem,
 } from "@/components/server-tile-rail"
 import { toast } from "sonner"
+import { ConfigHistorySheet } from "@/components/config-history-sheet"
+import type { ConfigRevisionDto } from "@/lib/config-revisions"
 import {
   ShieldCheckIcon, PlusIcon, KeyRoundIcon,
   UsersIcon, ActivityIcon, RefreshCwIcon, UploadIcon, InfoIcon,
-  Trash2Icon, CodeXmlIcon, AlertCircleIcon,
+  Trash2Icon, CodeXmlIcon, AlertCircleIcon, HistoryIcon,
 } from "lucide-react"
 
 type WgWorkspaceTab = "interfaces" | "peers" | "cli"
@@ -188,6 +190,10 @@ export default function WireGuardPage() {
   const [exportPeerId, setExportPeerId] = useState<string | null>(null)
   const [peerIface, setPeerIface] = useState<WgIfaceWithServer | null>(null)
   const [pendingDelete, setPendingDelete] = useState<PendingDelete | null>(null)
+  const [historyOpen, setHistoryOpen] = useState(false)
+  const [revisions, setRevisions] = useState<ConfigRevisionDto[]>([])
+  const [historyLoading, setHistoryLoading] = useState(false)
+  const [historyRestoring, setHistoryRestoring] = useState(false)
   const [liveExport, setLiveExport] = useState<{
     rsc?: string
     conf?: string
@@ -242,6 +248,44 @@ export default function WireGuardPage() {
       ? selectedServerId
       : ALL_SERVERS_ID
 
+  const historyServerId = effectiveServerId === ALL_SERVERS_ID ? null : effectiveServerId
+
+  const loadRevisions = useCallback(async () => {
+    if (!isLive || !historyServerId) return
+    setHistoryLoading(true)
+    try {
+      const res = await requestJson<{ revisions: ConfigRevisionDto[] }>(
+        backendUrl,
+        `/api/wireguard/revisions?serverId=${encodeURIComponent(historyServerId)}`,
+      )
+      setRevisions(res.revisions)
+    } catch (err) {
+      toast.error("Не удалось загрузить историю", { description: String(err) })
+      setRevisions([])
+    } finally {
+      setHistoryLoading(false)
+    }
+  }, [isLive, historyServerId, backendUrl])
+
+  const restoreRevision = useCallback(async (id: string) => {
+    if (!isLive || !historyServerId) return
+    setHistoryRestoring(true)
+    try {
+      await requestJson(
+        backendUrl,
+        `/api/wireguard/revisions/${encodeURIComponent(id)}/restore`,
+        { method: "POST", body: JSON.stringify({ serverId: historyServerId }) },
+      )
+      toast.success("Версия применена на роутер")
+      await loadLive()
+      await loadRevisions()
+    } catch (err) {
+      toast.error("Не удалось откатить", { description: String(err) })
+    } finally {
+      setHistoryRestoring(false)
+    }
+  }, [isLive, historyServerId, backendUrl, loadLive, loadRevisions])
+
   const scopedIfaces = useMemo(() => {
     if (effectiveServerId === ALL_SERVERS_ID) return displayIfaces
     return displayIfaces.filter((i) => i.serverId === effectiveServerId)
@@ -544,6 +588,7 @@ export default function WireGuardPage() {
             <>
               <ServerRailMobileButton />
               {isLive && (
+                <>
                 <Button
                   size="sm"
                   variant="outline"
@@ -553,6 +598,20 @@ export default function WireGuardPage() {
                   <RefreshCwIcon className={`size-4 ${loading ? "animate-spin" : ""}`} />
                   Обновить
                 </Button>
+                <Button
+                  size="sm"
+                  variant="outline"
+                  disabled={loading || !historyServerId}
+                  title={!historyServerId ? "Выберите сервер, чтобы смотреть историю" : "История версий и откат на CHR"}
+                  onClick={() => {
+                    setHistoryOpen(true)
+                    void loadRevisions()
+                  }}
+                >
+                  <HistoryIcon className="size-4" />
+                  История
+                </Button>
+                </>
               )}
               <Button size="sm" variant="outline" onClick={() => setImportOpen(true)}>
                 <UploadIcon className="size-4" />
@@ -822,6 +881,17 @@ export default function WireGuardPage() {
           </AlertDialogFooter>
         </AlertDialogContent>
       </AlertDialog>
+
+      <ConfigHistorySheet
+        open={historyOpen}
+        onOpenChange={setHistoryOpen}
+        title="История WireGuard"
+        itemLabel="интерфейсов"
+        revisions={revisions}
+        loading={historyLoading}
+        restoring={historyRestoring}
+        onRestore={restoreRevision}
+      />
     </>
   )
 }