internal/app/server/auth_handler_v2.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
-	"time"
 
 	"github.com/gin-gonic/gin"
 )
@@ -32,12 +31,13 @@ func (s *Server) GoogleCallbackHandlerV2(ctx *gin.Context) {
 	domain := s.deps.EnvironmentConfig.FrontendDomain
 
 	if jwt, err := s.deps.AuthService.GoogleAuthSuccess(state, code); err != nil {
-		url := fmt.Sprintf("%s/v2/web/login?error=%s", domain, url.QueryEscape(err.Error()))
-		ctx.Redirect(http.StatusSeeOther, url)
+		redirectUrl := fmt.Sprintf("%s/v2/web/login?error=%s", domain, url.QueryEscape(err.Error()))
+		ctx.Redirect(http.StatusSeeOther, redirectUrl)
 	} else {
-		url := fmt.Sprintf("%s/v2/web/home", domain)
-		s.SetCookie(ctx, "jwt_token", jwt, time.Hour*24*7)
-		ctx.Redirect(http.StatusSeeOther, url)
+		// Pass JWT via query param - frontend will set the cookie
+		// This bypasses cross-origin cookie issues with Cloudflare/proxies
+		redirectUrl := fmt.Sprintf("%s/v2/web/auth/callback?token=%s", domain, url.QueryEscape(jwt))
+		ctx.Redirect(http.StatusSeeOther, redirectUrl)
 	}
 }
 

web/src/App.tsx

@@ -13,6 +13,7 @@ import { use, type ReactNode } from 'react';
 import { AuthContext } from './context/AuthContext';
 import RecipePage from './pages/Recipe';
 import SearchPage from './pages/Search';
+import AuthCallback from './pages/AuthCallback';
 
 function ProtectedRoute({ children }: { children: ReactNode }) {
   const { isLoggedIn } = use(AuthContext)
@@ -37,6 +38,9 @@ function App() {
         {/* Login page does not inherit WebLayout */}
         <Route path="/v2/web/login" element={<LoginPage />} />
 
+        {/* Auth callback - handles token from OAuth redirect */}
+        <Route path="/v2/web/auth/callback" element={<AuthCallback />} />
+
         <Route path="/v2/web" element={<WebLayout />}>
           <Route index element={<Navigate to={ROUTE_CONSTANTS.Home} replace />} />
           <Route path="home" element={<Home />} />

web/src/pages/AuthCallback.tsx

@@ -0,0 +1,29 @@
+import { useEffect } from "react";
+import { useSearchParams, useNavigate } from "react-router-dom";
+import { useCookies } from "react-cookie";
+
+export default function AuthCallback() {
+  const [searchParams] = useSearchParams();
+  const navigate = useNavigate();
+  const [, setCookie] = useCookies(["jwt_token"]);
+
+  useEffect(() => {
+    const token = searchParams.get("token");
+
+    if (token) {
+      // Set cookie with 7 day expiration, accessible across all subdomains
+      setCookie("jwt_token", token, {
+        path: "/",
+        maxAge: 60 * 60 * 24 * 7, // 7 days in seconds
+        secure: true,
+        sameSite: "lax",
+      });
+      void navigate("/v2/web/home", { replace: true });
+    } else {
+      // No token provided, redirect to login
+      void navigate("/v2/web/login", { replace: true });
+    }
+  }, [searchParams, setCookie, navigate]);
+
+  return null;
+}