improve caching

src/App.tsx

@@ -1,39 +1,18 @@
-import React, { useEffect } from 'react';
+import React, { useEffect, useRef } from 'react';
 import useStore from '@store/store';
 
 import Chat from './components/Chat';
 import Menu from './components/Menu';
 import ConfigMenu from './components/ConfigMenu';
 
-import useSaveToLocalStorage from '@hooks/useSaveToLocalStorage';
 import useInitialiseNewChat from '@hooks/useInitialiseNewChat';
 
-import { ChatInterface } from '@type/chat';
-
 function App() {
-  useSaveToLocalStorage();
   const initialiseNewChat = useInitialiseNewChat();
 
-  const setChats = useStore((state) => state.setChats);
-  const setCurrentChatIndex = useStore((state) => state.setCurrentChatIndex);
-
   useEffect(() => {
-    const storedChats = localStorage.getItem('chats');
-    if (storedChats) {
-      try {
-        const chats: ChatInterface[] = JSON.parse(storedChats);
-        if (chats.length > 0) {
-          setChats(chats);
-          setCurrentChatIndex(0);
-        } else {
-          initialiseNewChat();
-        }
-      } catch (e: unknown) {
-        setChats([]);
-        setCurrentChatIndex(-1);
-        console.log(e);
-      }
-    } else {
+    const chats = useStore.getState().chats;
+    if (!chats || chats.length === 0) {
       initialiseNewChat();
     }
   }, []);

src/components/ConfigMenu/ConfigMenu.tsx

@@ -23,7 +23,6 @@ const ConfigMenu = () => {
 
       if (valid) {
         setApiKey(_apiKey);
-        localStorage.setItem('apiKey', _apiKey);
         setError(false);
         setOpenConfig(false);
       } else {
@@ -40,11 +39,9 @@ const ConfigMenu = () => {
   };
 
   useEffect(() => {
-    const storedApiKey = localStorage.getItem('apiKey');
-    if (storedApiKey) {
+    if (apiKey) {
       setApiFree(false);
-      setApiKey(storedApiKey);
-      _setApiKey(storedApiKey);
+      _setApiKey(apiKey);
     }
   }, []);
 

src/components/Menu/MenuOptions/ThemeSwitcher.tsx

@@ -1,8 +1,8 @@
-import React, { useEffect, useState } from 'react';
+import React, { useEffect } from 'react';
+import useStore from '@store/store';
 import SunIcon from '@icon/SunIcon';
 import MoonIcon from '@icon/MoonIcon';
-
-type Theme = 'light' | 'dark';
+import { Theme } from '@type/theme';
 
 const getOppositeTheme = (theme: Theme): Theme => {
   if (theme === 'dark') {
@@ -12,26 +12,15 @@ const getOppositeTheme = (theme: Theme): Theme => {
   }
 };
 const ThemeSwitcher = () => {
-  const [theme, setTheme] = useState<Theme>();
+  const theme = useStore((state) => state.theme);
+  const setTheme = useStore((state) => state.setTheme);
 
   const switchTheme = () => {
     setTheme(getOppositeTheme(theme!));
   };
 
   useEffect(() => {
-    const _theme = localStorage.getItem('theme');
-    if (_theme === 'light' || _theme === 'dark') {
-      setTheme(_theme);
-    } else {
-      setTheme('dark');
-    }
-  }, []);
-
-  useEffect(() => {
-    if (theme) {
-      document.documentElement.className = theme;
-      localStorage.setItem('theme', theme);
-    }
+    document.documentElement.className = theme;
   }, [theme]);
 
   return theme ? (

src/store/config-slice.ts

@@ -1,16 +1,26 @@
 import { StoreSlice } from './store';
+import { Theme } from '@type/theme';
 
 export interface ConfigSlice {
   openConfig: boolean;
+  theme: Theme;
   setOpenConfig: (openConfig: boolean) => void;
+  setTheme: (theme: Theme) => void;
 }
 
 export const createConfigSlice: StoreSlice<ConfigSlice> = (set, get) => ({
   openConfig: false,
+  theme: 'dark',
   setOpenConfig: (openConfig: boolean) => {
     set((prev: ConfigSlice) => ({
       ...prev,
       openConfig: openConfig,
     }));
   },
+  setTheme: (theme: Theme) => {
+    set((prev: ConfigSlice) => ({
+      ...prev,
+      theme: theme,
+    }));
+  },
 });

src/store/store.ts

@@ -1,4 +1,5 @@
 import create, { SetState, GetState } from 'zustand';
+import { persist } from 'zustand/middleware';
 import { ChatSlice, createChatSlice } from './chat-slice';
 import { InputSlice, createInputSlice } from './input-slice';
 import { AuthSlice, createAuthSlice } from './auth-slice';
@@ -11,11 +12,24 @@ export type StoreSlice<T> = (
   get: GetState<StoreState>
 ) => T;
 
-const useStore = create<StoreState>((set, get) => ({
-  ...createChatSlice(set, get),
-  ...createInputSlice(set, get),
-  ...createAuthSlice(set, get),
-  ...createConfigSlice(set, get),
-}));
+const useStore = create<StoreState>()(
+  persist(
+    (set, get) => ({
+      ...createChatSlice(set, get),
+      ...createInputSlice(set, get),
+      ...createAuthSlice(set, get),
+      ...createConfigSlice(set, get),
+    }),
+    {
+      name: 'free-chat-gpt',
+      partialize: (state) => ({
+        chats: state.chats,
+        currentChatIndex: state.currentChatIndex,
+        apiKey: state.apiKey,
+        theme: state.theme,
+      }),
+    }
+  )
+);
 
 export default useStore;

src/types/theme.ts

@@ -0,0 +1 @@
+export type Theme = 'light' | 'dark';