first commit

src/Context/AuthProvider.js

@@ -0,0 +1,45 @@
+import { useNavigate } from "react-router-dom";
+import { userStateListener } from "../firebase";
+import { createContext, useState, useEffect } from "react";
+
+export const AuthContext = createContext({
+  currentUserEmail: undefined,
+  currentUserCreatedAt: undefined
+});
+
+export const AuthProvider = ({ children, history }) => {
+  const [currentUser, setCurrentUser] = useState({
+    currentUserEmail: undefined,
+    currentUserCreatedAt: undefined
+  });
+  const navigate = useNavigate();
+
+  useEffect(() => {
+    const unsubscribe = userStateListener((user) => {
+      const token = user?.accessToken;
+      if (token) {
+        window.sessionStorage.setItem("token", token);
+      } else {
+        window.sessionStorage.removeItem("token");
+      }
+      if (!user) {
+        setCurrentUser({
+          currentUserEmail: null,
+          currentUserCreatedAt: undefined
+        });
+      } else {
+        let createdAt = new Date(parseInt(user.metadata.createdAt, 10));
+        if (isNaN(createdAt)) {
+          createdAt = undefined;
+        }
+        setCurrentUser({
+          currentUserEmail: user.email,
+          currentUserCreatedAt: createdAt
+        });
+      }
+    });
+    return unsubscribe;
+  }, [navigate]);
+
+  return <AuthContext.Provider value={currentUser}>{children}</AuthContext.Provider>;
+};