added login and protected routes

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "prisma.pinToPrisma6": true
+}

src/app/(auth)/login/page.tsx

@@ -1,7 +1,7 @@
+import { requireGuest } from "@/src/lib/auth/getUser";
 import LoginView from "@/src/modules/auth/ui/views/login-view";
 
-const Login = () => {
+export default async function LoginPage() {
+  await requireGuest();
   return <LoginView />;
-};
-
-export default Login;
+}

src/app/(auth)/register/user/page.tsx

@@ -1,7 +1,7 @@
 import RegisterUserView from "@/src/modules/auth/ui/views/register-user-view";
+import { requireGuest } from "@/src/lib/auth/getUser";
 
-const RegisterUser = () => {
+export default async function RegisterUser() {
+  await requireGuest();
   return <RegisterUserView />;
-};
-
-export default RegisterUser;
+}

src/app/(main)/dashboard/page.tsx

@@ -1,5 +1,71 @@
-const Dashboard = () => {
-  return <div>Du hast dich erfolgreich eingeloggt</div>;
-};
+import { LogoutButton } from "@/src/components/layout/LogoutButton";
+import { requireAuthWithData } from "@/src/lib/auth/getUser";
 
-export default Dashboard;
+export default async function DashboardPage() {
+  const userData = await requireAuthWithData();
+
+  return (
+    <div className="space-y-6">
+      <div className="bg-white rounded-lg shadow p-6">
+        <h1 className="text-3xl font-bold text-gray-900 mb-4">Willkommen zurück!</h1>
+        <p className="text-gray-600">
+          Schön, dich wiederzusehen, {userData?.name || userData.email}
+        </p>
+      </div>
+
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
+        <div className="bg-white rounded-lg shadow p-6">
+          <h2 className="text-lg font-semibold mb-2">Profil</h2>
+          <p className="text-gray-600 text-sm">Verwalte deine persönlichen Daten</p>
+        </div>
+
+        <div className="bg-white rounded-lg shadow p-6">
+          <h2 className="text-lg font-semibold mb-2">Trainings</h2>
+          <p className="text-gray-600 text-sm">Deine gebuchten Trainingseinheiten</p>
+        </div>
+
+        <div className="bg-white rounded-lg shadow p-6">
+          <h2 className="text-lg font-semibold mb-2">Einstellungen</h2>
+          <p className="text-gray-600 text-sm">Passe deine Einstellungen an</p>
+        </div>
+      </div>
+
+      <div className="bg-white rounded-lg shadow p-6">
+        <h2 className="text-xl font-semibold mb-4">Benutzerdaten</h2>
+        <dl className="grid grid-cols-1 md:grid-cols-2 gap-4">
+          <div>
+            <dt className="text-sm font-medium text-gray-500">Name</dt>
+            <dd className="mt-1 text-sm text-gray-900">{userData?.name || "—"}</dd>
+          </div>
+          <div>
+            <dt className="text-sm font-medium text-gray-500">E-Mail</dt>
+            <dd className="mt-1 text-sm text-gray-900">{userData.email}</dd>
+          </div>
+          <div>
+            <dt className="text-sm font-medium text-gray-500">Geburtsdatum</dt>
+            <dd className="mt-1 text-sm text-gray-900">
+              {userData?.birthday ? new Date(userData.birthday).toLocaleDateString("de-DE") : "—"}
+            </dd>
+          </div>
+          <div>
+            <dt className="text-sm font-medium text-gray-500">Wohnort</dt>
+            <dd className="mt-1 text-sm text-gray-900">
+              {userData?.plz && userData?.city ? `${userData.plz} ${userData.city}` : "—"}
+            </dd>
+          </div>
+          <div>
+            <dt className="text-sm font-medium text-gray-500">Geschlecht</dt>
+            <dd className="mt-1 text-sm text-gray-900">{userData?.gender || "—"}</dd>
+          </div>
+          <div>
+            <dt className="text-sm font-medium text-gray-500">Registriert seit</dt>
+            <dd className="mt-1 text-sm text-gray-900">
+              {userData?.createdAt ? new Date(userData.createdAt).toLocaleDateString("de-DE") : "—"}
+            </dd>
+          </div>
+        </dl>
+      </div>
+      <LogoutButton />
+    </div>
+  );
+}

src/app/api/auth/login/route.ts

@@ -0,0 +1,31 @@
+// app/api/auth/login/route.ts
+import { createClient } from "@/src/lib/supabase/server";
+import { NextResponse } from "next/server";
+
+export async function POST(req: Request) {
+  try {
+    const body = await req.json();
+    const { email, password } = body;
+
+    if (!email || !password) {
+      return NextResponse.json({ error: "E-Mail und Passwort sind erforderlich" }, { status: 400 });
+    }
+
+    const supabase = await createClient();
+
+    const { data, error } = await supabase.auth.signInWithPassword({
+      email,
+      password,
+    });
+
+    if (error) {
+      console.error("❌ Login Error:", error.message);
+      return NextResponse.json({ error: "E-Mail oder Passwort ist falsch" }, { status: 401 });
+    }
+
+    return NextResponse.json({ user: data.user, session: data.session }, { status: 200 });
+  } catch (error) {
+    console.error("Error in /api/auth/login:", error);
+    return NextResponse.json({ error: "Internal Server Error" }, { status: 500 });
+  }
+}

src/app/api/auth/register/route.ts

@@ -1,14 +1,8 @@
-import { supabaseServer } from "@/src/lib/supabaseClient";
+// app/api/auth/register/route.ts
+import { createClient } from "@/src/lib/supabase/server";
 import { prisma } from "@/src/lib/prisma";
 import { NextResponse } from "next/server";
 
-/**
- ** Handles POST request to register and save a User in the DB
- *
- *
- * @param {Request} request - Incoming HTTP request containing user data in JSON format
- * @returns {Promise<NextResponse>} - JSON response with exisiting or newly created user
- */
 export async function POST(request: Request) {
   try {
     const body = await request.json();
@@ -18,11 +12,13 @@ export async function POST(request: Request) {
       return NextResponse.json({ error: "Pflichtfelder fehlen" }, { status: 400 });
     }
 
-    const { data, error } = await supabaseServer.auth.signUp({
+    const supabase = await createClient();
+
+    const { data, error } = await supabase.auth.signUp({
       email,
       password,
       options: {
-        emailRedirectTo: "http://localhost:3000/login",
+        emailRedirectTo: `${process.env.NEXT_PUBLIC_SITE_URL || "http://localhost:3000"}/login`,
         data: {
           name,
           gender,

src/app/layout.tsx

@@ -2,13 +2,14 @@ import type { Metadata } from "next";
 import localFont from "next/font/local";
 import "./globals.css";
 import { Toaster } from "../components/ui/sonner";
+import { AuthInitializer } from "../components/AuthInitializer";
 
 const salmondFont = localFont({
   src: "../public/font/salmond.woff",
 });
 
 export const metadata: Metadata = {
-  title: "Create Next App",
+  title: "Kumasy",
   description: "Generated by create next app",
 };
 
@@ -20,6 +21,7 @@ export default function RootLayout({
   return (
     <html lang="en" className={salmondFont.className}>
       <body className={`antialiased`}>
+        <AuthInitializer />
         <main>{children}</main>
         <Toaster
           toastOptions={{

src/components/AuthInitializer.tsx

@@ -0,0 +1,21 @@
+"use client";
+
+import { useEffect, useRef } from "react";
+import { useAuthStore } from "@/src/store/authStore";
+
+export function AuthInitializer() {
+  const initAuth = useAuthStore((state) => state.initAuth);
+  const initialized = useAuthStore((state) => state.initialized);
+  const hasRun = useRef(false);
+
+  useEffect(() => {
+    // Prevent double initialization in development (React StrictMode)
+    if (hasRun.current || initialized) return;
+
+    hasRun.current = true;
+    console.log("🎬 [INIT] AuthInitializer mounting");
+    initAuth();
+  }, [initAuth, initialized]);
+
+  return null;
+}

src/components/layout/LogoutButton.tsx

@@ -0,0 +1,14 @@
+"use client";
+
+import { useAuthStore } from "@/src/store/authStore";
+import { Button } from "@/src/components/ui/button";
+
+export function LogoutButton() {
+  const signOut = useAuthStore((state) => state.signOut);
+
+  return (
+    <Button onClick={signOut} variant="destructive" size="sm">
+      Logout
+    </Button>
+  );
+}

src/hooks/useAuth.ts

@@ -0,0 +1,122 @@
+"use client";
+
+import { useState } from "react";
+import { userRegisterSchema } from "../modules/auth/validation/userRegisterSchema";
+import { toast } from "sonner";
+import { ZodError } from "zod";
+import { userLoginSchema } from "../modules/auth/validation/userLoginSchema";
+import { createClient } from "@/src/lib/supabase/client";
+import { useAuthStore } from "@/src/store/authStore";
+import { useRouter } from "next/navigation";
+import { RegisterFormData } from "../types/auth";
+
+export const useAuth = () => {
+  const [loading, setLoading] = useState(false);
+  const [errors, setErrors] = useState<Record<string, string>>({});
+  const supabase = createClient();
+  const setUser = useAuthStore((state) => state.setUser);
+  const router = useRouter();
+
+  const registerUser = async (formData: RegisterFormData) => {
+    setErrors({});
+    setLoading(true);
+
+    try {
+      userRegisterSchema.parse(formData);
+
+      const res = await fetch("/api/auth/register", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({
+          email: formData.email,
+          password: formData.password,
+          name: formData.fullName,
+          birthday: formData.birthday,
+          plz: formData.plz,
+          city: formData.place,
+          street: formData.street,
+          houseNumber: "",
+          gender: formData.gender,
+        }),
+      });
+
+      const data = await res.json();
+
+      if (!res.ok) {
+        setErrors({ email: data.error || "Registrierung fehlgeschlagen" });
+        toast.error(data.error || "Registrierung fehlgeschlagen");
+        return false;
+      }
+
+      toast.success("Bitte bestätige deine E-Mail, um die Registrierung abzuschließen.");
+      return true;
+    } catch (err) {
+      if (err instanceof ZodError) {
+        const fieldErrors: Record<string, string> = {};
+        err.issues.forEach((issue) => {
+          const path = issue.path[0];
+          if (typeof path === "string") fieldErrors[path] = issue.message;
+        });
+        setErrors(fieldErrors);
+        return false;
+      }
+      toast.error("Ein unbekannter Fehler ist aufgetreten.");
+      return false;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const loginUser = async (email: string, password: string, remember: boolean) => {
+    setErrors({});
+    setLoading(true);
+
+    try {
+      userLoginSchema.parse({ email, password });
+
+      const { data, error } = await supabase.auth.signInWithPassword({
+        email,
+        password,
+      });
+
+      if (error) {
+        setErrors({ email: "E-Mail oder Passwort ist falsch" });
+        toast.error("E-Mail oder Passwort ist falsch");
+        return false;
+      }
+
+      // Update Zustand store
+      setUser(data.user);
+
+      toast.success("Erfolgreich eingeloggt 🎉");
+
+      // Navigate and refresh
+      router.push("/dashboard");
+      router.refresh();
+
+      return true;
+    } catch (err) {
+      if (err instanceof ZodError) {
+        const fieldErrors: Record<string, string> = {};
+        err.issues.forEach((issue) => {
+          const path = issue.path[0];
+          if (typeof path === "string") fieldErrors[path] = issue.message;
+        });
+        setErrors(fieldErrors);
+        return false;
+      }
+      toast.error("Ein unerwarteter Fehler ist aufgetreten.");
+      return false;
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return {
+    loading,
+    errors,
+    registerUser,
+    loginUser,
+    setErrors,
+  };
+};

src/lib/auth/getUser.ts

@@ -0,0 +1,109 @@
+import { createClient } from "@/src/lib/supabase/server";
+import { prisma } from "@/src/lib/prisma";
+import { cache } from "react";
+
+// Define the user data type
+export type UserData = {
+  id: string;
+  name: string | null;
+  email: string;
+  birthday: Date | null;
+  plz: string | null;
+  city: string | null;
+  street: string | null;
+  houseNumber: string | null;
+  gender: string | null;
+  pbSrc: string | null;
+  createdAt: Date | null;
+};
+
+// Cache entry type
+type CacheEntry = {
+  data: UserData;
+  timestamp: number;
+};
+
+// Simple in-memory cache with timestamp
+const userDataCache = new Map<string, CacheEntry>();
+const CACHE_TTL = 5 * 60 * 1000; // 5 minutes
+
+let userDataCallCount = 0;
+
+// Cache Supabase user (per request)
+export const getUser = cache(async () => {
+  const supabase = await createClient();
+  const {
+    data: { user },
+  } = await supabase.auth.getUser();
+  console.log("🔐 [AUTH] getUser called - User:", user?.email || "none");
+  return user;
+});
+
+// Cache user data from database with time-based cache
+export const getUserData = cache(async (): Promise<UserData | null> => {
+  userDataCallCount++;
+  console.log(`📊 [DB] getUserData called (count: ${userDataCallCount})`);
+
+  const user = await getUser();
+  if (!user) return null;
+
+  // Check in-memory cache
+  const cached = userDataCache.get(user.id);
+  const now = Date.now();
+
+  if (cached && now - cached.timestamp < CACHE_TTL) {
+    console.log(
+      `⚡ [CACHE] Using cached data (${Math.round((now - cached.timestamp) / 1000)}s old)`
+    );
+    return cached.data;
+  }
+
+  console.log("🗄️ [DB] Fetching user data from Prisma for:", user.email);
+
+  const userData = await prisma.user.findUnique({
+    where: { id: user.id },
+    select: {
+      id: true,
+      name: true,
+      email: true,
+      birthday: true,
+      plz: true,
+      city: true,
+      street: true,
+      houseNumber: true,
+      gender: true,
+      pbSrc: true,
+      createdAt: true,
+    },
+  });
+
+  console.log("✅ [DB] User data fetched:", userData?.name);
+
+  // Store in cache
+  if (userData) {
+    userDataCache.set(user.id, { data: userData, timestamp: now });
+  }
+
+  return userData;
+});
+
+export async function requireAuth() {
+  const user = await getUser();
+  return user!;
+}
+
+export async function requireAuthWithData() {
+  const userData = await getUserData();
+  if (!userData) {
+    throw new Error("User not found");
+  }
+  return userData;
+}
+
+export async function requireGuest() {
+  const user = await getUser();
+  if (user) {
+    const { redirect } = await import("next/navigation");
+    redirect("/dashboard");
+  }
+}

src/lib/supabase/client.ts

@@ -0,0 +1,8 @@
+import { createBrowserClient } from "@supabase/ssr";
+
+export function createClient() {
+  return createBrowserClient(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!
+  );
+}

src/lib/supabase/server.ts

@@ -0,0 +1,27 @@
+import { createServerClient } from "@supabase/ssr";
+import { cookies } from "next/headers";
+
+export async function createClient() {
+  const cookieStore = await cookies();
+
+  return createServerClient(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
+    {
+      cookies: {
+        getAll() {
+          return cookieStore.getAll();
+        },
+        setAll(cookiesToSet) {
+          try {
+            cookiesToSet.forEach(({ name, value, options }) =>
+              cookieStore.set(name, value, options)
+            );
+          } catch {
+            // Server Component - ignore
+          }
+        },
+      },
+    }
+  );
+}

src/lib/supabaseClient.ts

@@ -1,18 +0,0 @@
-import { createBrowserClient } from "@supabase/ssr";
-import { createClient } from "@supabase/supabase-js";
-
-export const supabaseBrowser = createBrowserClient(
-  process.env.NEXT_PUBLIC_SUPABASE_URL!,
-  process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!
-);
-
-if (!process.env.NEXT_PUBLIC_SUPABASE_URL || !process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY) {
-  throw new Error(
-    "❌ Missing Supabase environment variables! Make sure NEXT_PUBLIC_SUPABASE_URL and NEXT_PUBLIC_SUPABASE_ANON_KEY are set."
-  );
-}
-
-export const supabaseServer = createClient(
-  process.env.NEXT_PUBLIC_SUPABASE_URL!,
-  process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!
-);

src/middleware.ts

@@ -0,0 +1,58 @@
+// middleware.ts (at root level)
+import { createServerClient } from "@supabase/ssr";
+import { NextResponse, type NextRequest } from "next/server";
+
+export async function middleware(request: NextRequest) {
+  let supabaseResponse = NextResponse.next({ request });
+
+  const supabase = createServerClient(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
+    {
+      cookies: {
+        getAll() {
+          return request.cookies.getAll();
+        },
+        setAll(cookiesToSet) {
+          cookiesToSet.forEach(({ name, value }) => request.cookies.set(name, value));
+          supabaseResponse = NextResponse.next({ request });
+          cookiesToSet.forEach(({ name, value, options }) =>
+            supabaseResponse.cookies.set(name, value, options)
+          );
+        },
+      },
+    }
+  );
+
+  const {
+    data: { user },
+  } = await supabase.auth.getUser();
+
+  // Protected routes
+  const protectedRoutes = ["/dashboard", "/profile", "/trainings"];
+  const isProtectedRoute = protectedRoutes.some((route) =>
+    request.nextUrl.pathname.startsWith(route)
+  );
+
+  if (!user && isProtectedRoute) {
+    const url = request.nextUrl.clone();
+    url.pathname = "/login";
+    return NextResponse.redirect(url);
+  }
+
+  // Auth routes (redirect if already logged in)
+  const authRoutes = ["/login", "/register"];
+  const isAuthRoute = authRoutes.some((route) => request.nextUrl.pathname.startsWith(route));
+
+  if (user && isAuthRoute) {
+    const url = request.nextUrl.clone();
+    url.pathname = "/dashboard";
+    return NextResponse.redirect(url);
+  }
+
+  return supabaseResponse;
+}
+
+export const config = {
+  matcher: ["/((?!_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)"],
+};

src/modules/auth/ui/views/login-view.tsx

@@ -8,49 +8,20 @@ import { Label } from "@/src/components/ui/label";
 import { Checkbox } from "@/src/components/ui/checkbox";
 import { useState } from "react";
 import { useRouter } from "next/navigation";
-import { supabaseBrowser } from "@/src/lib/supabaseClient";
 import { Spinner } from "@/src/components/ui/spinner";
+import { useAuth } from "@/src/hooks/useAuth";
 
 const LoginView = () => {
-  //TODO: RIGHT LOGIN with Schema etc.
+  const { loginUser, errors, loading } = useAuth();
   const [email, setEmail] = useState("");
   const [password, setPassword] = useState("");
   const [remember, setRemember] = useState(false);
-  const [error, setError] = useState("");
-  const [loading, setLoading] = useState(false);
   const router = useRouter();
 
   const handleLogin = async () => {
-    setError("");
-    setLoading(true);
-
-    try {
-      const { data, error } = await supabaseBrowser.auth.signInWithPassword({
-        email,
-        password,
-      });
-
-      if (error) {
-        console.error("❌ Login Error:", error.message);
-        setError("E-Mail oder Passwort ist falsch");
-        setLoading(false);
-        return;
-      }
-
-      // Optional: Session speichern
-      if (remember) {
-        localStorage.setItem("since3_remember_me", "true");
-      } else {
-        localStorage.removeItem("since3_remember_me");
-      }
-
-      // Redirect nach Login
+    const success = await loginUser(email, password, remember);
+    if (success) {
       router.push("/dashboard");
-    } catch (err) {
-      console.error(err);
-      setError("Ein unerwarteter Fehler ist aufgetreten");
-    } finally {
-      setLoading(false);
     }
   };
 
@@ -79,6 +50,7 @@ const LoginView = () => {
             id="login-email"
             value={email}
             onChange={(e) => setEmail(e.target.value)}
+            error={errors.email}
           />
           <InputComponent
             isLabel
@@ -87,10 +59,11 @@ const LoginView = () => {
             id="login-password"
             value={password}
             onChange={(e) => setPassword(e.target.value)}
+            error={errors.password}
           />
 
           <Button onClick={handleLogin} disabled={loading} className="w-full mt-6">
-            {loading ? <Spinner /> : "Weiter"}
+            {loading ? <Spinner /> : "Anmelden"}
           </Button>
 
           <div className="flex flex-col sm:flex-row sm:justify-between w-full mt-6 gap-4 text-sm">
@@ -119,7 +92,7 @@ const LoginView = () => {
             <p>Ich habe noch keinen Account</p>
             <p
               className="text-yellow hover:underline cursor-pointer"
-              onClick={() => router.push("/register")}
+              onClick={() => router.push("/register/user")}
             >
               Sign Up
             </p>

src/modules/auth/ui/views/register-user-view.tsx

@@ -6,17 +6,16 @@ import { Button } from "@/src/components/ui/button";
 import AuthButton from "../components/AuthButton";
 import { FaGoogle, FaFacebook } from "react-icons/fa";
 import { useAuthFormStore } from "../../store/authFormState";
-import { userRegisterSchema, userRegisterStep1Schema } from "../../validation/userRegisterSchema";
+import { userRegisterStep1Schema } from "../../validation/userRegisterSchema";
 import { ZodError } from "zod";
 import DropdownComponent from "@/src/components/layout/DropdownComponent";
 import { Spinner } from "@/src/components/ui/spinner";
-import { toast } from "sonner";
 import { useRouter } from "next/navigation";
+import { useAuth } from "@/src/hooks/useAuth";
 
 const RegisterUserView = () => {
   const [step, setStep] = useState(1);
-  const [errors, setErrors] = useState<Record<string, string>>({});
-  const [loading, setLoading] = useState(false);
+  const { registerUser, loading, errors, setErrors } = useAuth();
   const router = useRouter();
   const formData = useAuthFormStore();
 
@@ -51,69 +50,26 @@ const RegisterUserView = () => {
   };
 
   const handleRegister = async () => {
-    setErrors({});
-    setLoading(true);
-    try {
-      userRegisterSchema.parse({
-        fullName: formData.fullName,
-        email: formData.email,
-        password: formData.password,
-        passwordConfirm: formData.passwordConfirm,
-        birthday: formData.birthday,
-        plz: formData.plz,
-        place: formData.place,
-        street: formData.street,
-        gender: formData.gender,
-      });
+    const success = await registerUser({
+      fullName: formData.fullName,
+      email: formData.email,
+      password: formData.password,
+      passwordConfirm: formData.passwordConfirm,
+      birthday: formData.birthday,
+      plz: formData.plz,
+      place: formData.place,
+      street: formData.street,
+      gender: formData.gender,
+    });
 
-      const res = await fetch("/api/auth/register", {
-        method: "POST",
-        headers: { "Content-Type": "application/json" },
-        body: JSON.stringify({
-          email: formData.email,
-          password: formData.password,
-          name: formData.fullName,
-          birthday: formData.birthday,
-          plz: formData.plz,
-          city: formData.place,
-          street: formData.street,
-          houseNumber: "",
-          gender: formData.gender,
-        }),
-      });
-
-      const data = await res.json();
-      if (!res.ok) {
-        setErrors({ email: data.error || "Registrierung fehlgeschlagen" });
-        return;
-      }
-
-      toast.info("Bitte Email bestätigen für erfolgreiche Registrierung");
+    if (success) {
       formData.resetForm();
-      setStep(1);
-      setErrors({});
-
       router.push("/login");
-    } catch (err) {
-      if (err instanceof ZodError) {
-        const fieldErrors: Record<string, string> = {};
-        err.issues.forEach((issue) => {
-          const path = issue.path[0];
-          if (typeof path === "string") {
-            fieldErrors[path] = issue.message;
-          }
-        });
-        setErrors(fieldErrors);
-      } else {
-        toast.error(`Registrierung fehlgeschlagen: ${err}`);
-      }
-    } finally {
-      setLoading(false);
     }
   };
 
   return (
-    <div className="flex min-h-screena">
+    <div className="flex min-h-screen">
       {/* Sidebar */}
       <div className="hidden lg:flex lg:w-1/6 ">
         <div className="fixed p-4 left-0 top-0 h-screen w-1/2 z-10">
@@ -173,7 +129,7 @@ const RegisterUserView = () => {
               />
 
               <Button className="w-full mt-6" onClick={handleNext}>
-                Weiter
+                {loading ? <Spinner /> : "Weiter"}
               </Button>
             </>
           )}

src/modules/auth/validation/userLoginSchema.ts

@@ -0,0 +1,8 @@
+import { z } from "zod";
+
+export const userLoginSchema = z.object({
+  email: z.string().email("Ungültige E-Mail-Adresse"),
+  password: z.string().min(8, "Passwort muss mindestens 8 Zeichen enthalten"),
+});
+
+export type UserLoginSchema = z.infer<typeof userLoginSchema>;

src/store/authStore.ts

@@ -0,0 +1,60 @@
+// src/store/authStore.ts
+import { create } from "zustand";
+import { createClient } from "@/src/lib/supabase/client";
+import { User } from "@supabase/supabase-js";
+
+interface AuthState {
+  user: User | null;
+  loading: boolean;
+  initialized: boolean;
+  setUser: (user: User | null) => void;
+  initAuth: () => Promise<void>;
+  signOut: () => Promise<void>;
+}
+
+export const useAuthStore = create<AuthState>((set, get) => ({
+  user: null,
+  loading: true,
+  initialized: false,
+
+  setUser: (user) => {
+    console.log("👤 [ZUSTAND] setUser:", user?.email || "null");
+    set({ user, loading: false });
+  },
+
+  initAuth: async () => {
+    // Prevent multiple initializations
+    if (get().initialized) {
+      console.log("⏭️ [ZUSTAND] Already initialized, skipping");
+      return;
+    }
+
+    console.log("🚀 [ZUSTAND] initAuth starting");
+    const supabase = createClient();
+
+    const {
+      data: { session },
+    } = await supabase.auth.getSession();
+
+    console.log("🔐 [ZUSTAND] Initial session:", session?.user?.email || "none");
+    set({ user: session?.user ?? null, loading: false, initialized: true });
+
+    // Listen for auth changes (login/logout only)
+    supabase.auth.onAuthStateChange((event, session) => {
+      console.log("🔄 [ZUSTAND] Auth event:", event, session?.user?.email || "none");
+
+      // Only update on actual auth changes, not on token refresh
+      if (event === "SIGNED_IN" || event === "SIGNED_OUT" || event === "USER_UPDATED") {
+        set({ user: session?.user ?? null, loading: false });
+      }
+    });
+  },
+
+  signOut: async () => {
+    console.log("👋 [ZUSTAND] Signing out");
+    const supabase = createClient();
+    await supabase.auth.signOut();
+    set({ user: null });
+    window.location.href = "/login";
+  },
+}));

src/types/auth.ts

@@ -0,0 +1,16 @@
+export interface RegisterFormData {
+  fullName: string;
+  email: string;
+  password: string;
+  passwordConfirm: string;
+  birthday: string;
+  plz: string;
+  place: string;
+  street: string;
+  gender: string;
+}
+
+export interface LoginFormData {
+  email: string;
+  password: string;
+}