feat: add global weather support

lib/store.ts

@@ -6,6 +6,8 @@ import type { SelectedLocation } from "@/types/location";
 import type { Province } from "@/types/province";
 import type { TemperatureUnit, WindSpeedUnit } from "@/types/units";
 import { DEFAULT_TEMPERATURE_UNIT, DEFAULT_WIND_SPEED_UNIT } from "@/lib/weather-utils";
+import type { WeatherRegion } from "@/types/weather-region";
+import { getWeatherRegionForCountryCode } from "@/types/weather-region";
 
 type NotificationProvinceMode = "selected" | "manual";
 
@@ -61,6 +63,30 @@ export const useWeatherStore = create<WeatherStore>()(
       setTemperatureUnit: (unit) => set({ temperatureUnit: unit }),
       setWindSpeedUnit: (unit) => set({ windSpeedUnit: unit }),
     }),
-    { name: "wtr:preferences" },
+    {
+      name: "wtr:preferences",
+      migrate: (persisted) => {
+        const state = persisted as Partial<WeatherStore> | undefined;
+        const location = state?.selectedLocation as (Partial<SelectedLocation> & { region?: WeatherRegion }) | null | undefined;
+        if (!state || !location) return persisted;
+        const countryCode = location.countryCode ?? (location.province ? "PL" : null);
+        const region = location.region ?? getWeatherRegionForCountryCode(countryCode);
+        return {
+          ...state,
+          selectedLocation: {
+            ...location,
+            country: location.country ?? (countryCode === "PL" ? "Polska" : null),
+            countryCode,
+            admin1: location.admin1 ?? location.province ?? null,
+            admin2: location.admin2 ?? location.district ?? null,
+            timezone: location.timezone ?? (countryCode === "PL" ? "Europe/Warsaw" : null),
+            region,
+            stationId: location.stationId ?? null,
+            stationName: location.stationName ?? null,
+            distanceKm: location.distanceKm ?? null,
+          },
+        };
+      },
+    },
   ),
 );