added login redirect

src/pages/Login.tsx

@@ -0,0 +1,53 @@
+import { RedirectLoginOptions, useAuth0 } from "@auth0/auth0-react";
+// import { useAuth } from "hooks";
+import queryString from "query-string";
+import { useCallback, useEffect } from "react";
+import { useLocation } from "react-router";
+// import Loading from "./Loading";
+import LoadingScreen from "app/LoadingScreen";
+
+interface Props {
+  prevPath?: string;
+}
+
+export default function Login(props: Props) {
+  const { prevPath } = props;
+  const location = useLocation();
+  const { loginWithRedirect } = useAuth0();
+
+  const setRouteBeforeLogin = useCallback((): Promise<string> => {
+    return new Promise(function(resolve) {
+      localStorage.setItem("routeBeforeLogin", prevPath ? prevPath : "/");
+      return resolve("success");
+    });
+  }, [prevPath]);
+
+  useEffect(() => {
+    const options: RedirectLoginOptions = {
+      authorizationParams: {}  // Initialize here
+    };
+    console.log(location)
+    if (location && location.search) {
+      let parsed = queryString.parse(location.search);
+
+      console.log(parsed.signup)
+      if (parsed.signup === "true") {
+        // if (options.authorizationParams) options.authorizationParams.screen_hint = "signup"; // 'signup' tells Auth0 to show the signup tab
+        options.authorizationParams!.screen_hint = "signup"; // 'signup' tells Auth0 to show the signup tab
+        console.log(options)
+      }
+
+      if (parsed.email && parsed.email !== "") {
+        // if (options.authorizationParams) options.authorizationParams.login_hint = parsed.email.toString(); // prefill email
+        options.authorizationParams!.login_hint = parsed.email.toString(); // prefill email
+      }
+    }
+
+    setRouteBeforeLogin().finally(() => {
+      loginWithRedirect(options);
+    });
+  }, [location, loginWithRedirect, setRouteBeforeLogin]);
+
+  // return <LoadingScreen fullViewport={true} />;
+  return <LoadingScreen message="login redirect" />;
+}