What

apk/context/auth-context.tsx

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+import AsyncStorage from "@react-native-async-storage/async-storage";
+import * as React from "react";
+
+interface User {
+    email: string;
+}
+
+interface AuthContextValue {
+    user: User | null;
+    login: (email: string, password: string) => Promise<void>;
+    logout: () => void;
+}
+
+const authContext = React.createContext<AuthContextValue | undefined>(undefined);
+
+export function AuthProvider({ children }: { children: React.ReactNode }) {
+    const [user, setUser] = React.useState<User | null>(null);
+    
+    const login = async (email: string, password: string) => {
+        const fakeUser = { email };
+
+        await AsyncStorage.setItem("user", JSON.stringify(fakeUser));
+        setUser(fakeUser);
+    }
+
+    const logout = async () => {
+        await AsyncStorage.removeItem("user");
+        setUser(null);
+    }
+
+    return (
+        <authContext.Provider value={{ user, login, logout }}>
+            {children}
+        </authContext.Provider>
+    );
+}
+
+export function useAuth() {
+    const context = React.useContext(authContext);
+    if(!context) {
+        throw new Error("useAuth must be inside AuthProvider");
+    }
+    return context;
+}
+
+
+