feat: add city name in snaphost name

src/pages/City/CityCreatePage/index.tsx

@@ -17,6 +17,7 @@ import {
   countryStore,
   languageStore,
   mediaStore,
+  snapshotStore,
   isMediaIdEmpty,
   SelectMediaDialog,
   UploadMediaDialog,
@@ -60,7 +61,13 @@ export const CityCreatePage = observer(() => {
   const handleCreate = async () => {
     try {
       setIsLoading(true);
+      const ruCityName = createCityData.ru.name.trim();
       await cityStore.createCity();
+      try {
+        await snapshotStore.createEmptySnapshot(`${ruCityName}_Пустой_Экспорт`);
+      } catch (e) {
+        console.warn("Failed to create empty snapshot for city:", e);
+      }
       toast.success("Город успешно создан");
       navigate("/city");
     } catch (error) {

src/pages/Snapshot/SnapshotCreatePage/index.tsx

@@ -6,14 +6,24 @@ import {
   DialogContent,
   DialogActions,
 } from "@mui/material";
-import { snapshotStore, authStore, routeStore, selectedCityStore } from "@shared";
+import { snapshotStore, authStore, routeStore, selectedCityStore, cityStore } from "@shared";
 import { observer } from "mobx-react-lite";
 import { ArrowLeft, Loader2, Save } from "lucide-react";
-import { useState, useEffect } from "react";
+import { useState, useEffect, useMemo } from "react";
 import { useNavigate } from "react-router-dom";
 import { toast } from "react-toastify";
 import { runInAction } from "mobx";
 
+function escapeRegex(s: string) {
+  return s.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+}
+
+function buildExportNameRegex(cityNames: string[]): RegExp {
+  if (!cityNames.length) return /.+/;
+  const pattern = cityNames.map(escapeRegex).join("|");
+  return new RegExp(`^(${pattern})_.+$`);
+}
+
 export const SnapshotCreatePage = observer(() => {
   const { createSnapshot, getSnapshotStatus, getStorageInfo, snapshotStatus } = snapshotStore;
   const navigate = useNavigate();
@@ -24,10 +34,22 @@ export const SnapshotCreatePage = observer(() => {
   }, []);
 
   const [name, setName] = useState("");
+  const [nameError, setNameError] = useState<string | null>(null);
   const [isLoading, setIsLoading] = useState(false);
   const [duplicateWarningOpen, setDuplicateWarningOpen] = useState(false);
   const [duplicateRouteNumbers, setDuplicateRouteNumbers] = useState<string[]>([]);
 
+  const exportNameRegex = useMemo(() => {
+    const names = cityStore.cities["ru"].data.map((c) => c.name.trim());
+    return buildExportNameRegex(names);
+  }, [cityStore.cities["ru"].data.length]);
+
+  useEffect(() => {
+    if (!cityStore.cities["ru"].loaded) {
+      cityStore.getCities("ru");
+    }
+  }, []);
+
   const canReadRoutes = authStore.canRead("routes");
 
   const startExport = async () => {
@@ -115,7 +137,19 @@ export const SnapshotCreatePage = observer(() => {
             label="Название"
             required
             value={name}
-            onChange={(e) => setName(e.target.value)}
+            error={!!nameError}
+            helperText={nameError ?? " "}
+            onChange={(e) => {
+              const val = e.target.value;
+              setName(val);
+              const trimmed = val.trim();
+              const hasFullFormat = trimmed.includes("_") && trimmed.split("_").slice(1).join("_").length > 0;
+              if (hasFullFormat && !exportNameRegex.test(trimmed)) {
+                setNameError("Название должно начинаться с названия существующего города");
+              } else {
+                setNameError(null);
+              }
+            }}
           />
 
           <Button
@@ -124,7 +158,7 @@ export const SnapshotCreatePage = observer(() => {
             className="w-min flex gap-2 items-center"
             startIcon={<Save size={20} />}
             onClick={handleSave}
-            disabled={isLoading || !name.trim()}
+            disabled={isLoading || !exportNameRegex.test(name.trim())}
           >
             {isLoading ? (
               <div className="flex items-center gap-2">

src/pages/Snapshot/SnapshotListPage/index.tsx

@@ -1,6 +1,6 @@
 import { DataGrid, GridColDef, GridRenderCellParams } from "@mui/x-data-grid";
 import { ruRU } from "@mui/x-data-grid/locales";
-import { authStore, languageStore, snapshotStore, SearchInput } from "@shared";
+import { authStore, languageStore, snapshotStore, cityStore, SearchInput } from "@shared";
 import { useEffect, useState, useMemo } from "react";
 import { observer } from "mobx-react-lite";
 import { DatabaseBackup, Trash2 } from "lucide-react";
@@ -9,6 +9,16 @@ import { Alert, Box, Button, CircularProgress, Dialog, DialogActions, DialogCont
 
 const LOW_STORAGE_THRESHOLD_GB = 10;
 
+function escapeRegex(s: string) {
+  return s.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+}
+
+function buildExportNameRegex(cityNames: string[]): RegExp {
+  if (!cityNames.length) return /.+/;
+  const pattern = cityNames.map(escapeRegex).join("|");
+  return new RegExp(`^(${pattern})_.+$`);
+}
+
 const SEGMENT_COLORS = [
   "#FF3B30",
   "#FF9500",
@@ -45,6 +55,12 @@ export const SnapshotListPage = observer(() => {
   const [searchQuery, setSearchQuery] = useState("");
   const [isEmptySnapshotModalOpen, setIsEmptySnapshotModalOpen] = useState(false);
   const [emptySnapshotName, setEmptySnapshotName] = useState("");
+  const [emptySnapshotNameError, setEmptySnapshotNameError] = useState<string | null>(null);
+
+  const exportNameRegex = useMemo(() => {
+    const names = cityStore.cities["ru"].data.map((c) => c.name.trim());
+    return buildExportNameRegex(names);
+  }, [cityStore.cities["ru"].data.length]);
   const [isCreatingEmpty, setIsCreatingEmpty] = useState(false);
   const [paginationModel, setPaginationModel] = useState({
     page: 0,
@@ -201,6 +217,7 @@ export const SnapshotListPage = observer(() => {
                 disabled={isLowStorage}
                 onClick={() => {
                   setEmptySnapshotName("");
+                  setEmptySnapshotNameError(null);
                   setIsEmptySnapshotModalOpen(true);
                 }}
               >
@@ -353,7 +370,19 @@ export const SnapshotListPage = observer(() => {
             fullWidth
             label="Название"
             value={emptySnapshotName}
-            onChange={(e) => setEmptySnapshotName(e.target.value)}
+            error={!!emptySnapshotNameError}
+            helperText={emptySnapshotNameError ?? " "}
+            onChange={(e) => {
+              const val = e.target.value;
+              setEmptySnapshotName(val);
+              const trimmed = val.trim();
+              const hasFullFormat = trimmed.includes("_") && trimmed.split("_").slice(1).join("_").length > 0;
+              if (hasFullFormat && !exportNameRegex.test(trimmed)) {
+                setEmptySnapshotNameError("Название должно начинаться с названия существующего города");
+              } else {
+                setEmptySnapshotNameError(null);
+              }
+            }}
             margin="normal"
           />
         </DialogContent>
@@ -363,7 +392,7 @@ export const SnapshotListPage = observer(() => {
           </Button>
           <Button
             variant="contained"
-            disabled={!emptySnapshotName.trim() || isCreatingEmpty}
+            disabled={!exportNameRegex.test(emptySnapshotName.trim()) || isCreatingEmpty}
             onClick={async () => {
               setIsCreatingEmpty(true);
               try {