feat: add search parameter keys for redirect and message handling in login flow

apps/frontend/app/routes/auth/login.tsx

@@ -1,12 +1,14 @@
 import { Box, Container, Flex, Heading } from '@radix-ui/themes';
 import { useMutation } from '@tanstack/react-query';
-import { useNavigate } from 'react-router';
+import { useLocation, useNavigate } from 'react-router';
 import { Slide, toast, ToastContainer } from 'react-toastify';
 import * as v from 'valibot';
 import { useResponseErrorHandler } from '../../hooks/ResponseHelper';
 import { useApi } from '../../providers/ApiProvider';
 import { formHook } from '../../providers/FormProvider';
 import type { Route } from './+types/login';
+import { SearchParamKeys } from '../../lib/constants';
+import { useEffect, useState } from 'react';
 
 const loginFormSchema = v.object({
   username: v.pipe(v.string(), v.trim(), v.minLength(1, 'Username is required')),
@@ -18,14 +20,23 @@ export function meta({}: Route.MetaArgs): Route.MetaDescriptors {
   return [{ title: 'Login | YANPM' }];
 }
 
+// TODO: remember me
 export default function LoginRoute() {
   const navigate = useNavigate();
+  const location = useLocation();
   const { tanstackApiClient } = useApi();
   const { defaultResponseErrorHandler } = useResponseErrorHandler();
+  const [previousSearchParamMessage, setPreviousSearchParamMessage] = useState<string>('');
 
   const { mutateAsync: login, isPending } = useMutation({
     ...tanstackApiClient.mutation('post', '/api/auth/login').mutationOptions,
     onSuccess: async () => {
+      const searchParams = new URLSearchParams(location.search);
+      const redirectTo = searchParams.get(SearchParamKeys.Redirect);
+      if (redirectTo) {
+        navigate(redirectTo);
+        return;
+      }
       navigate('/');
     },
     onError: (error) => {
@@ -50,6 +61,25 @@ export default function LoginRoute() {
     },
   });
 
+  useEffect(() => {
+    const searchParams = new URLSearchParams(location.search);
+    const message = searchParams.get(SearchParamKeys.Message);
+    if (message && message !== previousSearchParamMessage) {
+      setPreviousSearchParamMessage(message);
+      toast.info(message, {
+        position: 'top-center',
+        autoClose: 5000,
+        hideProgressBar: false,
+        closeOnClick: true,
+        pauseOnHover: true,
+        draggable: false,
+        progress: undefined,
+        theme: 'colored',
+        toastId: 'login-route-info-message',
+      });
+    }
+  }, [location.search]);
+
   return (
     <>
       <Flex align="center" justify="center" style={{ minHeight: 'calc(100vh - 64px)' }}>
@@ -110,7 +140,7 @@ export default function LoginRoute() {
                 )}
               />
 
-              <div style={{ marginTop: 18, display: 'flex', gap: 8 }}>
+              <div style={{ marginTop: 18, display: 'flex', gap: 8, justifySelf: 'center' }}>
                 <form.SubmitButton
                   loading={isPending}
                   label={{