Support suffixed online-board flight numbers

src/features/online-board/components/OnlineBoardFilter.test.tsx

@@ -410,6 +410,22 @@ describe("OnlineBoardFilter – operating days calendar parity (TIRREDESIGN-12)"
     expect(disabledDates).toContain("2026-05-04");
     expect(disabledDates).toContain("2026-05-05");
   });
+
+  it("requests flight calendar days with a normalized suffix flight number", () => {
+    render(
+      <OnlineBoardFilter
+        initialTab="flight"
+        initialFlightNumber="38d"
+        today="20260505"
+      />,
+    );
+
+    expect(calendarDaysMock.params).toContainEqual({
+      date: "2026-05-04",
+      searchType: "flight",
+      flightNumber: "SU0038D",
+    });
+  });
 });
 
 describe("OnlineBoardFilter – flight-number validation per TZ §4.1.9.3", () => {
@@ -451,7 +467,26 @@ describe("OnlineBoardFilter – flight-number validation per TZ §4.1.9.3", () =
     expect(url).toMatch(/SU1234/);
   });
 
-  it("4.1.9.3-R: letters in flight number show error and block submit", () => {
+  it("TIRREDESIGN-13: suffix flight number submits as normalized SU0038D URL", () => {
+    render(<OnlineBoardFilter initialTab="flight" initialDate="20260601" />);
+    fireEvent.change(screen.getByTestId("flight-number-input"), {
+      target: { value: "38d" },
+    });
+    fireEvent.submit(screen.getByTestId("search-form"));
+    expect(mockNavigate).toHaveBeenCalled();
+    const url = mockNavigate.mock.calls[0]![0] as string;
+    expect(url).toContain("/ru-ru/onlineboard/flight/SU0038D-20260601");
+  });
+
+  it("TIRREDESIGN-13: suffix flight number normalizes on blur like Angular", () => {
+    render(<OnlineBoardFilter initialTab="flight" />);
+    const input = screen.getByTestId("flight-number-input") as HTMLInputElement;
+    fireEvent.change(input, { target: { value: "123d" } });
+    fireEvent.blur(input);
+    expect(input.value).toBe("0123D");
+  });
+
+  it("4.1.9.3-R: letters without digits show error and block submit", () => {
     render(<OnlineBoardFilter initialTab="flight" />);
     fireEvent.change(screen.getByTestId("flight-number-input"), {
       target: { value: "abc" },

src/features/online-board/components/OnlineBoardFilter.tsx

@@ -53,28 +53,45 @@ function dateToIsoYmd(value: Date): string {
   return `${y}-${m}-${d}`;
 }
 
+interface NormalizedFlightNumber {
+  flightNumber: string;
+  suffix?: string;
+  display: string;
+}
+
 /**
- * Validates a flight number string per TZ §4.1.9.3:
- * - Must be 1-4 digits only (no letters, no spaces).
- * - Error message: "только из цифр и не должен быть длиннее 4-х символов".
- * Shorter inputs (1-3 digits) are valid; they get zero-padded at submit time.
+ * Normalise the Angular flight-number field:
+ * `38` -> `0038`, `38D` -> `0038D`, `123d` -> `0123D`.
  */
+function normalizeFlightNumberInput(value: string): NormalizedFlightNumber | null {
+  const raw = value.trim();
+  const match = /^(\d{1,4})([A-Za-z])?$/.exec(raw);
+  if (!match) return null;
+  const digits = match[1];
+  if (!digits) return null;
+  const flightNumber = digits.padStart(4, "0");
+  const suffix = match[2]?.toUpperCase();
+  return suffix
+    ? { flightNumber, suffix, display: `${flightNumber}${suffix}` }
+    : { flightNumber, display: flightNumber };
+}
+
+function formatFlightNumberInput(value: string): string {
+  const normalized = normalizeFlightNumberInput(value);
+  return normalized?.display ?? value.toUpperCase();
+}
+
 function validateFlightNumber(value: string): string | null {
-  if (!value.trim()) {
+  const raw = value.trim();
+  if (!raw) {
     return "BOARD.FLIGHT_NUMBER-ERROR-EMPTY";
   }
-  const reg = /^\d{1,4}$/;
-  if (!reg.test(value.trim())) {
+  if (!normalizeFlightNumberInput(raw)) {
     return "BOARD.FLIGHT_NUMBER-ERROR-ONLY-NUMBER";
   }
   return null;
 }
 
-/** Zero-pads a 1-3 digit flight number to 4 digits per TZ §4.1.9.3 (e.g. "38" → "0038"). */
-function padFlightNumber(value: string): string {
-  return value.trim().padStart(4, "0");
-}
-
 export interface OnlineBoardFilterProps {
   /** Pre-populate filter from URL params on search results pages */
   initialDeparture?: string;
@@ -217,12 +234,12 @@ export const OnlineBoardFilter: FC<OnlineBoardFilterProps> = ({
   // flight number or empty route produces no API call.
   const flightCalendarParams = useMemo<CalendarParams | null>(() => {
     if (activeTab !== "flight") return null;
-    const digits = flightNumber.trim();
-    if (digits.length < 1 || !/^\d{1,4}$/.test(digits)) return null;
+    const normalized = normalizeFlightNumberInput(flightNumber);
+    if (!normalized) return null;
     return {
       date: boardCalendarBaseDate,
       searchType: "flight",
-      flightNumber: `SU${padFlightNumber(digits)}`,
+      flightNumber: `SU${normalized.flightNumber}${normalized.suffix ?? ""}`,
     };
   }, [activeTab, flightNumber, boardCalendarBaseDate]);
 
@@ -415,14 +432,13 @@ export const OnlineBoardFilter: FC<OnlineBoardFilterProps> = ({
       // the placeholder ДД.ММ.ГГГГ is left untouched.
       const dateParam = dateToYyyymmdd(flightDate ?? new Date());
       const carrier = "SU";
-      // TZ §4.1.9.3: zero-pad to 4 digits (38 → 0038, 383 → 0383).
-      const num = padFlightNumber(flightNumber);
-      if (!num) return;
+      const normalized = normalizeFlightNumberInput(flightNumber);
+      if (!normalized) return;
 
       // TZ §4.1.8: persist filter snapshot for cross-section hydration.
       setBoardFilter({
         mode: "flight-number",
-        flightNumber: `${carrier}${num}`,
+        flightNumber: `${carrier}${normalized.flightNumber}${normalized.suffix ?? ""}`,
         date: dateParam,
         timeFrom: "0000",
         timeTo: "2400",
@@ -434,7 +450,21 @@ export const OnlineBoardFilter: FC<OnlineBoardFilterProps> = ({
       setSubmitLockedUntil(Date.now() + 30_000);
       setNow(Date.now());
 
-      const url = buildOnlineBoardUrl({ type: "flight", carrier, flightNumber: num, date: dateParam });
+      const urlParams = normalized.suffix
+        ? {
+            type: "flight" as const,
+            carrier,
+            flightNumber: normalized.flightNumber,
+            suffix: normalized.suffix,
+            date: dateParam,
+          }
+        : {
+            type: "flight" as const,
+            carrier,
+            flightNumber: normalized.flightNumber,
+            date: dateParam,
+          };
+      const url = buildOnlineBoardUrl(urlParams);
       void navigate(`/${locale}/${url}`);
     },
     [flightNumber, flightDate, navigate, locale, isSubmitLocked, flightSearchSignature],
@@ -579,6 +609,7 @@ export const OnlineBoardFilter: FC<OnlineBoardFilterProps> = ({
                             setFlightNumber(e.target.value);
                             if (flightNumberError) setFlightNumberError(null);
                           }}
+                          onBlur={(e) => setFlightNumber(formatFlightNumberInput(e.target.value))}
                           data-testid="flight-number-input"
                         />
                         {flightNumber && (

src/features/online-board/components/OnlineBoardSearchPage.test.tsx

@@ -34,8 +34,12 @@ vi.mock("@/ui/layout/PageTabs.js", () => ({
   PageTabs: () => <div data-testid="page-tabs" />,
 }));
 
+let capturedFilterProps: Record<string, unknown> | undefined;
 vi.mock("./OnlineBoardFilter.js", () => ({
-  OnlineBoardFilter: () => <div data-testid="online-board-filter" />,
+  OnlineBoardFilter: (props: Record<string, unknown>) => {
+    capturedFilterProps = props;
+    return <div data-testid="online-board-filter" />;
+  },
 }));
 
 vi.mock("@/shared/hooks/useSearchHistory.js", () => ({
@@ -46,13 +50,17 @@ vi.mock("@/features/flights-map/hooks/useFeatureFlag.js", () => ({
   useFeatureFlag: () => false,
 }));
 
+let capturedSearchParams: Record<string, unknown> | undefined;
 vi.mock("../hooks/useOnlineBoard.js", () => ({
-  useOnlineBoard: () => ({
-    flights: [],
-    loading: false,
-    error: null,
-    refresh: vi.fn(),
-  }),
+  useOnlineBoard: (params: Record<string, unknown>) => {
+    capturedSearchParams = params;
+    return {
+      flights: [],
+      loading: false,
+      error: null,
+      refresh: vi.fn(),
+    };
+  },
 }));
 
 vi.mock("../hooks/useLiveBoardSearch.js", () => ({
@@ -143,6 +151,8 @@ describe("OnlineBoardSearchPage", () => {
   beforeEach(() => {
     vi.clearAllMocks();
     capturedInitialCurrentFlightId = undefined;
+    capturedFilterProps = undefined;
+    capturedSearchParams = undefined;
   });
 
   afterEach(() => {
@@ -176,6 +186,23 @@ describe("OnlineBoardSearchPage", () => {
     expect(screen.getByTestId("online-board-search")).toBeTruthy();
   });
 
+  it("TIRREDESIGN-13: preserves suffix in flight API params and filter value", () => {
+    render(
+      <OnlineBoardSearchPage
+        params={{
+          type: "flight",
+          carrier: "SU",
+          flightNumber: "0100",
+          suffix: "D",
+          date: "20250115",
+        }}
+      />,
+    );
+
+    expect(capturedSearchParams?.flightNumber).toBe("SU0100D");
+    expect(capturedFilterProps?.initialFlightNumber).toBe("0100D");
+  });
+
   it("renders for route search type", () => {
     render(
       <OnlineBoardSearchPage

src/features/online-board/components/OnlineBoardSearchPage.tsx

@@ -115,7 +115,7 @@ function toSearchParams(
 
   switch (params.type) {
     case "flight":
-      base.flightNumber = `${params.carrier}${params.flightNumber}`;
+      base.flightNumber = `${params.carrier}${params.flightNumber}${params.suffix ?? ""}`;
       break;
     case "departure":
       base.departure = params.station;
@@ -159,7 +159,7 @@ function toCalendarParams(
 
   switch (params.type) {
     case "flight":
-      base.flightNumber = `${params.carrier}${params.flightNumber}`;
+      base.flightNumber = `${params.carrier}${params.flightNumber}${params.suffix ?? ""}`;
       break;
     case "departure":
       base.departure = params.station;
@@ -229,7 +229,7 @@ export const OnlineBoardSearchPage: FC<OnlineBoardSearchPageProps> = ({
         : params.type === "arrival" ? params.station
         : undefined;
     const flightNumber = isFlightNumber
-      ? `${params.carrier} ${params.flightNumber}`
+      ? `${params.carrier} ${params.flightNumber}${params.type === "flight" ? params.suffix ?? "" : ""}`
       : undefined;
     const labelParts: string[] = [];
     if (departure) labelParts.push(departure);
@@ -256,6 +256,7 @@ export const OnlineBoardSearchPage: FC<OnlineBoardSearchPageProps> = ({
       : undefined,
     params.type === "flight" ? params.carrier : undefined,
     params.type === "flight" ? params.flightNumber : undefined,
+    params.type === "flight" ? params.suffix : undefined,
     params.date,
   ]);
 
@@ -295,7 +296,7 @@ export const OnlineBoardSearchPage: FC<OnlineBoardSearchPageProps> = ({
       if (dateLabel) searchHeading += `, ${dateLabel}`;
       break;
     case "flight":
-      searchHeading = `${t("SHARED.NUMBER")}: ${params.carrier} ${params.flightNumber}`;
+      searchHeading = `${t("SHARED.NUMBER")}: ${params.carrier} ${params.flightNumber}${params.suffix ?? ""}`;
       if (dateLabel) searchHeading += `, ${dateLabel}`;
       break;
     default:
@@ -503,7 +504,7 @@ export const OnlineBoardSearchPage: FC<OnlineBoardSearchPageProps> = ({
                       }
                     : params.type === "flight"
                       ? {
-                          initialFlightNumber: params.flightNumber,
+                          initialFlightNumber: `${params.flightNumber}${params.suffix ?? ""}`,
                           initialDate: params.date,
                           initialTab: "flight" as const,
                         }

src/i18n/locales/en/common.json

@@ -23,7 +23,7 @@
     "FLIGHT_NUMBER": "Flight number",
     "FLIGHT_NUMBER-ERROR-BIG": "Incorrect flight number. The flight number may not be longer than 4 digits",
     "FLIGHT_NUMBER-ERROR-EMPTY": "Specify flight number",
-    "FLIGHT_NUMBER-ERROR-ONLY-NUMBER": "Incorrect flight number. The flight number may only consist of digits and must not exceed 4 characters.",
+    "FLIGHT_NUMBER-ERROR-ONLY-NUMBER": "Incorrect flight number. The flight number must consist of 1-4 digits and may include one Latin-letter suffix at the end.",
     "GPS-BUTTON": "Detect my location",
     "GPS-HELP": "Enable geolocation in your browser to detect the city automatically. Geolocation will not work if any anonymizers are enabled.",
     "NOT-FOUND-LOCATION": "You are seeing this page because we could not access your current location. \nAllow the app to access your location to view flights to your destination.",

src/i18n/locales/ru/common.json

@@ -23,7 +23,7 @@
     "FLIGHT_NUMBER": "Номер рейса",
     "FLIGHT_NUMBER-ERROR-BIG": "Неверно указан номер рейса. Номер рейса не должен быть длиннее 4-х символов",
     "FLIGHT_NUMBER-ERROR-EMPTY": "Укажите номер рейса",
-    "FLIGHT_NUMBER-ERROR-ONLY-NUMBER": "Неверно указан номер рейса. Номер рейса может состоять только из цифр и не должен быть длиннее 4-х символов.",
+    "FLIGHT_NUMBER-ERROR-ONLY-NUMBER": "Неверно указан номер рейса. Номер рейса должен состоять из 1-4 цифр и может содержать в конце одну латинскую букву-суффикс.",
     "GPS-BUTTON": "Определить мое местоположение",
     "GPS-HELP": "Для автоматического определения города разрешите браузеру доступ к геолокации. Определение может не работать при включенных анонимайзерах.",
     "NOT-FOUND-LOCATION": "Мы не смогли определить Ваше месторасположение — поэтому Вы видите эту страницу. \nРазрешите определение месторасположения — сразу будет открыта страница рейсов в ваш город.",