feat: build production-ready wtr weather PWA

lib/store.ts

@@ -0,0 +1,28 @@
+"use client";
+
+import { create } from "zustand";
+import { persist } from "zustand/middleware";
+
+interface WeatherStore {
+  favorites: string[];
+  selectedStationId: string | null;
+  toggleFavorite: (id: string) => void;
+  selectStation: (id: string) => void;
+}
+
+export const useWeatherStore = create<WeatherStore>()(
+  persist(
+    (set) => ({
+      favorites: [],
+      selectedStationId: null,
+      toggleFavorite: (id) =>
+        set((state) => ({
+          favorites: state.favorites.includes(id)
+            ? state.favorites.filter((favoriteId) => favoriteId !== id)
+            : [...state.favorites, id],
+        })),
+      selectStation: (id) => set({ selectedStationId: id }),
+    }),
+    { name: "wtr:preferences" },
+  ),
+);