apps/frontend/app/empty-toastify.css

@@ -0,0 +1 @@
+/* intentionally empty: used to stub react-toastify CSS in production builds */

apps/frontend/app/hooks/ResponseHelper.tsx

@@ -1,8 +1,11 @@
 import { Text } from '@radix-ui/themes';
 import { AxiosError } from 'axios';
 import { useLocation, useNavigate } from 'react-router';
-import { toast } from 'react-toastify';
+import { toast } from 'react-toastify/unstyled';
 import { SearchParamKeys } from '../lib/constants';
+import { useQueryMessage } from './useQueryMessage';
+import { QueryMessageCode, QueryMessageType } from '../lib/QueryMessages';
+import { useCallback } from 'react';
 
 export enum ResponseErrorToastId {
   NetworkError = 'network-error',
@@ -19,8 +22,15 @@ export type DefaultResponseErrorHandlerOptions = {
  * @param err error value
  * @returns {boolean} true if the error was handled, false otherwise
  */
-const defaultResponseErrorHandler =
-  (navigate: ReturnType<typeof useNavigate>, location: ReturnType<typeof useLocation>) =>
+
+export function useResponseErrorHandler(): {
+  defaultResponseErrorHandler: typeof defaultResponseErrorHandler;
+} {
+  const navigate = useNavigate();
+  const location = useLocation();
+  const { toSearchParamQueryMessage } = useQueryMessage();
+
+  const defaultResponseErrorHandler = useCallback(
     (err: unknown, options?: DefaultResponseErrorHandlerOptions): boolean => {
       if (!(err instanceof AxiosError) && !options?.disableHandleUnexpectedErrors) {
         toast.error(
@@ -76,7 +86,7 @@ const defaultResponseErrorHandler =
         const currentPath = location.pathname + location.search;
         const searchParam = new URLSearchParams();
         searchParam.set(SearchParamKeys.Redirect, currentPath);
-      searchParam.set(SearchParamKeys.Message, 'Session expired, please log in again');
+        searchParam.set(SearchParamKeys.Message, toSearchParamQueryMessage(QueryMessageCode.SessionExpired, QueryMessageType.Info));
         navigate(`/login?${searchParam.toString()}`);
         return true;
       }
@@ -102,12 +112,9 @@ const defaultResponseErrorHandler =
       }
 
       return false;
-  };
+    },
+    [location, navigate, toSearchParamQueryMessage]
+  );
 
-export function useResponseErrorHandler(): {
-  defaultResponseErrorHandler: ReturnType<typeof defaultResponseErrorHandler>;
-} {
-  const navigate = useNavigate();
-  const location = useLocation();
-  return { defaultResponseErrorHandler: defaultResponseErrorHandler(navigate, location) };
+  return { defaultResponseErrorHandler };
 }

apps/frontend/app/hooks/useQueryMessage.tsx

@@ -0,0 +1,111 @@
+import { useCallback, useEffect, useRef, type ReactNode } from 'react';
+import { useLocation, useSearchParams } from 'react-router';
+import { toast } from 'react-toastify/unstyled';
+import { SearchParamKeys } from '../lib/constants';
+import { CODE_TO_MESSAGE_MAP, QueryMessageCode, QueryMessageType } from '../lib/QueryMessages';
+
+type QueryMessageString = `${QueryMessageCode}__${QueryMessageType}`;
+
+export type QueryMessage = {
+  type: QueryMessageType;
+  code: QueryMessageCode;
+  message: ReactNode;
+};
+
+export type UseQueryMessageOptions = {
+  displayMessages?: boolean;
+};
+
+export type UseQueryMessageReturn = {
+  setQueryMessage: (messageCode: QueryMessageCode, messageType: QueryMessageType) => void;
+  clearQueryMessage: () => void;
+  toSearchParamQueryMessage: (message: QueryMessageCode, type: QueryMessageType) => QueryMessageString;
+};
+
+export function useQueryMessage(
+  { displayMessages }: UseQueryMessageOptions = {
+    displayMessages: true,
+  }
+): UseQueryMessageReturn {
+  const location = useLocation();
+  const [searchParams, setSearchParams] = useSearchParams();
+  const messageStr = useRef<QueryMessageString | null>(null);
+
+  useEffect(() => {
+    // Reset messageStr when location changes to allow re-displaying the same message on navigation
+    messageStr.current = null;
+  }, [location.pathname]);
+
+  useEffect(() => {
+    const queryMessageStr = searchParams.get(SearchParamKeys.Message);
+    if (!(queryMessageStr && queryMessageStr !== messageStr.current)) return;
+    const [queryMessage, queryMessageString] = toQueryMessage(queryMessageStr) ?? [null, null];
+    if (!queryMessage) return;
+
+    messageStr.current = queryMessageString;
+    if (displayMessages) {
+      toast[queryMessage.type](queryMessage.code, {
+        position: 'top-center',
+        autoClose: 5000,
+        hideProgressBar: false,
+        closeOnClick: true,
+        pauseOnHover: true,
+        draggable: false,
+        progress: undefined,
+        theme: 'colored',
+        toastId: 'login-route-info-message',
+      });
+    }
+  }, [displayMessages, searchParams]);
+
+  const setQueryMessage = useCallback(
+    (messageCode: QueryMessageCode, messageType: QueryMessageType) => {
+      const queryMessageString: QueryMessageString = `${messageCode}__${messageType}`;
+      messageStr.current = queryMessageString;
+      setSearchParams((prev) => {
+        prev.set(SearchParamKeys.Message, queryMessageString);
+        return prev;
+      });
+    },
+    [setSearchParams]
+  );
+
+  const clearQueryMessage = useCallback(() => {
+    messageStr.current = null;
+    setSearchParams((prev) => {
+      prev.delete(SearchParamKeys.Message);
+      return prev;
+    });
+  }, [setSearchParams]);
+
+  const toSearchParamQueryMessage = useCallback((message: QueryMessageCode, type: QueryMessageType): QueryMessageString => {
+    return `${message}__${type}`;
+  }, []);
+
+  return {
+    setQueryMessage,
+    clearQueryMessage,
+    toSearchParamQueryMessage,
+  };
+}
+
+function isValidQueryMessageCode(code: string): code is QueryMessageCode {
+  return Object.values(QueryMessageCode).includes(code as QueryMessageCode);
+}
+
+function isValidQueryMessageType(type: string): type is QueryMessageType {
+  return Object.values(QueryMessageType).includes(type as QueryMessageType);
+}
+
+function toQueryMessage(value: string): [QueryMessage, QueryMessageString] | null {
+  const [code, type] = value.split('__');
+  if (!isValidQueryMessageCode(code) || !isValidQueryMessageType(type)) return null;
+  return [
+    {
+      code: code,
+      type: type,
+      message: CODE_TO_MESSAGE_MAP[code],
+    },
+    `${code}__${type}`,
+  ];
+}

apps/frontend/app/lib/QueryMessages.tsx

@@ -0,0 +1,20 @@
+import type { ReactNode } from 'react';
+
+export enum QueryMessageType {
+  Info = 'info',
+  Success = 'success',
+  Warning = 'warning',
+  Error = 'error',
+}
+
+export enum QueryMessageCode {
+  SessionExpired = 'SESSION_EXPIRED',
+  InitializationRequired = 'INITIALIZATION_REQUIRED',
+  InitializationSuccessful = 'INITIALIZATION_SUCCESSFUL',
+}
+
+export const CODE_TO_MESSAGE_MAP: Record<QueryMessageCode, ReactNode> = {
+  [QueryMessageCode.SessionExpired]: 'Your session has expired. Please log in again.',
+  [QueryMessageCode.InitializationRequired]: 'The application requires initialization. Please follow the setup instructions.',
+  [QueryMessageCode.InitializationSuccessful]: 'Initialization successful. Please log in.',
+} as const;

apps/frontend/app/root.tsx

@@ -2,6 +2,11 @@ import { isRouteErrorResponse, Links, Meta, Outlet, Scripts, ScrollRestoration }
 import type { Route } from './+types/root';
 import '@radix-ui/themes/styles.css';
 import './app.css';
+// start: react-toastify special import
+// ! MUST use unstyled version for dev server build, styled version for production build is handled in vite.config.ts
+import { ToastContainer } from 'react-toastify/unstyled';
+import 'react-toastify/ReactToastify.css';
+// end: react-toastify special import
 import AppTheme from './components/theme';
 import { ApiProvider } from './providers/ApiProvider';
 import { LayoutProvider } from './providers/LayoutProvider';
@@ -19,8 +24,6 @@ export function Layout({ children }: { children: React.ReactNode }) {
         <meta name="viewport" content="width=device-width, initial-scale=1" />
         <Meta />
         <Links />
-        {/* Required for react-toastify */}
-        <style />
       </head>
       <body>
         {children}
@@ -33,6 +36,7 @@ export function Layout({ children }: { children: React.ReactNode }) {
 
 export default function App() {
   return (
+    <>
       <AppTheme>
         <ApiProvider>
           <Tooltip.Provider delayDuration={250}>
@@ -46,6 +50,9 @@ export default function App() {
           </Tooltip.Provider>
         </ApiProvider>
       </AppTheme>
+
+      <ToastContainer />
+    </>
   );
 }
 

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

@@ -1,15 +1,15 @@
 import { Box, Container, Flex, Heading } from '@radix-ui/themes';
 import { useMutation } from '@tanstack/react-query';
 import { useLocation, useNavigate } from 'react-router';
-import { Slide, toast, ToastContainer } from 'react-toastify';
+import { toast } from 'react-toastify/unstyled';
 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';
 import { AxiosError } from 'axios';
+import { useQueryMessage } from '../../hooks/useQueryMessage';
 
 const loginFormSchema = v.object({
   username: v.pipe(v.string(), v.trim(), v.minLength(1, 'Username is required')),
@@ -27,7 +27,7 @@ export default function LoginRoute() {
   const location = useLocation();
   const { tanstackApiClient } = useApi();
   const { defaultResponseErrorHandler } = useResponseErrorHandler();
-  const [previousSearchParamMessage, setPreviousSearchParamMessage] = useState<string>('');
+  useQueryMessage();
 
   const { mutateAsync: login, isPending } = useMutation({
     ...tanstackApiClient.mutation('post', '/api/auth/login').mutationOptions,
@@ -75,25 +75,6 @@ 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)' }}>
@@ -167,17 +148,6 @@ export default function LoginRoute() {
           </Box>
         </Container>
       </Flex>
-      <ToastContainer
-        position="top-center"
-        autoClose={false}
-        newestOnTop={false}
-        closeOnClick
-        rtl={false}
-        pauseOnFocusLoss
-        draggable={false}
-        theme="colored"
-        transition={Slide}
-      />
     </>
   );
 }

apps/frontend/app/routes/init.tsx

@@ -1,13 +1,15 @@
 import { Box, Container, Flex, Heading, Text } from '@radix-ui/themes';
 import { useMutation, useQuery } from '@tanstack/react-query';
 import { useNavigate } from 'react-router';
-import { Slide, toast, ToastContainer } from 'react-toastify';
+import { toast } from 'react-toastify/unstyled';
 import * as v from 'valibot';
 import { useResponseErrorHandler } from '../hooks/ResponseHelper';
 import { useApi } from '../providers/ApiProvider';
 import { formHook } from '../providers/FormProvider';
 import { TooltipContentContainer } from '../components/info';
 import { SearchParamKeys } from '../lib/constants';
+import { useQueryMessage } from '../hooks/useQueryMessage';
+import { QueryMessageCode, QueryMessageType } from '../lib/QueryMessages';
 
 const initFormSchema = v.object({
   username: v.pipe(v.string(), v.trim(), v.minLength(1, 'Username is required')),
@@ -19,12 +21,13 @@ export default function InitRoute() {
   const navigate = useNavigate();
   const { tanstackApiClient } = useApi();
   const { defaultResponseErrorHandler } = useResponseErrorHandler();
+  const { toSearchParamQueryMessage } = useQueryMessage();
 
   const { mutateAsync: initAdmin, isPending } = useMutation({
     ...tanstackApiClient.mutation('post', '/api/auth/init_admin').mutationOptions,
     onSuccess: async () => {
       const searchParams = new URLSearchParams();
-      searchParams.set(SearchParamKeys.Message, 'Initialization successful. Please log in.');
+      searchParams.set(SearchParamKeys.Message, toSearchParamQueryMessage(QueryMessageCode.InitializationSuccessful, QueryMessageType.Success));
       navigate(`/login?${searchParams.toString()}`);
     },
     onError: (error) => {
@@ -40,7 +43,7 @@ export default function InitRoute() {
       try {
         const data = await healthInfoQuery.queryFn!(...args);
         if (data.is_initialized) {
-          navigate('/');
+          navigate('/login', { replace: true });
           return data;
         }
         return data;
@@ -153,18 +156,6 @@ export default function InitRoute() {
           </Box>
         </Container>
       </Flex>
-
-      <ToastContainer
-        position="top-center"
-        autoClose={false}
-        newestOnTop={false}
-        closeOnClick
-        rtl={false}
-        pauseOnFocusLoss
-        draggable={false}
-        theme="colored"
-        transition={Slide}
-      />
     </>
   );
 }

apps/frontend/vite.config.ts

@@ -5,7 +5,10 @@ import tsconfigPaths from 'vite-tsconfig-paths';
 // @ts-expect-error vite-plugin-eslint has no types
 import eslint from 'vite-plugin-eslint';
 
-export default defineConfig({
+export default defineConfig(({ command }) => {
+  const isBuild = command === 'build';
+
+  return {
     plugins: [
       tailwindcss(),
       reactRouter(),
@@ -14,5 +17,22 @@ export default defineConfig({
         failOnError: false,
       }),
     ],
+    resolve: {
+      alias: isBuild
+        ? [
+            {
+              // replace unstyled import with styled for SPA build
+              find: 'react-toastify/unstyled',
+              replacement: 'react-toastify',
+            },
+            {
+              // point to the empty CSS file to stub out the import during build, SPA build does not require extra CSS imports
+              find: 'react-toastify/ReactToastify.css',
+              replacement: '~/empty-toastify.css',
+            },
+          ]
+        : [],
+    },
     appType: 'spa',
+  };
 });