Align flights map date window with Angular

src/features/flights-map/components/FlightsMapStartPage.test.tsx

@@ -8,7 +8,10 @@ import { FlightsMapStartPage } from "./FlightsMapStartPage.js";
 import type * as DictionariesModuleNS from "@/shared/dictionaries/index.js";
 import { transformDictionaries } from "@/shared/dictionaries/index.js";
 import type { IDictionaries, IRawDictionaries } from "@/shared/dictionaries/index.js";
-import type { FlightsMapSearchParams } from "../types.js";
+import type {
+  FlightsMapCalendarParams,
+  FlightsMapSearchParams,
+} from "../types.js";
 import {
   resetCrossSectionStore,
   setMapFilter,
@@ -82,8 +85,12 @@ vi.mock("../hooks/useFlightsMapSearch.js", () => ({
   },
 }));
 
+const calendarCalls: Array<FlightsMapCalendarParams | null> = [];
 vi.mock("../hooks/useFlightsMapCalendar.js", () => ({
-  useFlightsMapCalendar: () => ({ availableDays: [] }),
+  useFlightsMapCalendar: (params: FlightsMapCalendarParams | null) => {
+    calendarCalls.push(params);
+    return { availableDays: [] };
+  },
 }));
 
 const dictState: {
@@ -984,6 +991,7 @@ describe("§4.1.24.5 R44: routes API uses [-1d, +6mo] date window", () => {
   beforeEach(() => {
     lastMapFilterProps = null;
     searchCalls.length = 0;
+    calendarCalls.length = 0;
     dictState.dictionaries = buildDictionaries();
     dictState.loading = false;
     dictState.error = null;
@@ -1000,21 +1008,36 @@ describe("§4.1.24.5 R44: routes API uses [-1d, +6mo] date window", () => {
     expect(callsWithDeparture).toHaveLength(0);
   });
 
-  it("4.1.24-R44: dateFrom/dateTo span today to +6 months when departure is set", () => {
+  it("4.1.24-R44: dateFrom starts yesterday and dateTo spans to +6 months when departure is set", () => {
     resetCrossSectionStore();
     setMapFilter({
       departure: "MOW", arrival: null, date: null,
       showInternal: false, showInternational: false, showTransfers: false,
     });
-    render(<FlightsMapStartPage />);
+    render(<FlightsMapStartPage today="20260506" />);
 
     const callsWithDeparture = searchCalls.filter((p) => p?.departure === "MOW");
-    if (callsWithDeparture.length > 0) {
-      const call = callsWithDeparture[0]!;
-      const today = new Date();
-      const expectedYear = today.getFullYear().toString();
-      expect(call.dateFrom.slice(0, 4)).toBe(expectedYear);
-      expect(call.dateTo.slice(0, 4)).toMatch(/^\d{4}$/);
-    }
+    expect(callsWithDeparture).not.toHaveLength(0);
+    expect(callsWithDeparture[0]).toMatchObject({
+      departure: "MOW",
+      dateFrom: "20260505",
+      dateTo: "20261105",
+    });
+  });
+
+  it("4.1.24-R44: calendar availability request starts from the same yesterday anchor", () => {
+    resetCrossSectionStore();
+    setMapFilter({
+      departure: "MOW", arrival: null, date: null,
+      showInternal: false, showInternational: false, showTransfers: false,
+    });
+    render(<FlightsMapStartPage today="20260506" />);
+
+    const callsWithDeparture = calendarCalls.filter((p) => p?.departure === "MOW");
+    expect(callsWithDeparture).not.toHaveLength(0);
+    expect(callsWithDeparture[0]).toMatchObject({
+      departure: "MOW",
+      date: "20260505",
+    });
   });
 });

src/features/flights-map/components/FlightsMapStartPage.tsx

@@ -63,6 +63,18 @@ function addMonthsYyyymmdd(base: string, months: number): string {
   return `${ry}${rm}${rd}`;
 }
 
+function addDaysYyyymmdd(base: string, days: number): string {
+  const y = Number(base.slice(0, 4));
+  const m = Number(base.slice(4, 6)) - 1;
+  const d = Number(base.slice(6, 8));
+  const date = new Date(y, m, d);
+  date.setDate(date.getDate() + days);
+  const ry = date.getFullYear().toString();
+  const rm = (date.getMonth() + 1).toString().padStart(2, "0");
+  const rd = date.getDate().toString().padStart(2, "0");
+  return `${ry}${rm}${rd}`;
+}
+
 // ---------------------------------------------------------------------------
 // Component
 // ---------------------------------------------------------------------------
@@ -94,6 +106,10 @@ export const FlightsMapStartPage: FC<FlightsMapStartPageProps> = ({
   // there but always called to keep hook order stable.
   const fallbackTodayYmd = useRef(todayYyyymmdd()).current;
   const todayYmd = today ?? fallbackTodayYmd;
+  const searchDateFromYmd = useMemo(
+    () => addDaysYyyymmdd(todayYmd, -1),
+    [todayYmd],
+  );
   const { t } = useTranslation();
   const { language } = useLocale();
 
@@ -171,23 +187,36 @@ export const FlightsMapStartPage: FC<FlightsMapStartPageProps> = ({
     return {
       departure: filterState.departure,
       arrival: filterState.arrival,
-      dateFrom: todayYmd,
-      dateTo: addMonthsYyyymmdd(todayYmd, 6),
+      // Angular starts the flights-map destinations window at minDateCalendar
+      // (today - 1 day). Keeping this aligned preserves Moscow domestic
+      // airport-internal directions such as DME-SVO and ZIA-SVO.
+      dateFrom: searchDateFromYmd,
+      dateTo: addMonthsYyyymmdd(searchDateFromYmd, 6),
       connections: filterState.arrival ? effectiveConnections : 0,
     };
-  }, [filterState.departure, filterState.arrival, effectiveConnections, todayYmd]);
+  }, [
+    filterState.departure,
+    filterState.arrival,
+    effectiveConnections,
+    searchDateFromYmd,
+  ]);
 
   // Build calendar params
   const calendarParams = useMemo<FlightsMapCalendarParams | null>(() => {
     if (!filterState.departure) return null;
 
     return {
-      date: todayYmd,
+      date: searchDateFromYmd,
       departure: filterState.departure,
       arrival: filterState.arrival,
       connections: filterState.arrival ? filterState.connections : false,
     };
-  }, [filterState.departure, filterState.arrival, filterState.connections, todayYmd]);
+  }, [
+    filterState.departure,
+    filterState.arrival,
+    filterState.connections,
+    searchDateFromYmd,
+  ]);
 
   const { routes, loading, error } = useFlightsMapSearch(searchParams);
   const { availableDays } = useFlightsMapCalendar(calendarParams);