feat: add auth router with login/logout/me and login template

app/modules/auth/router.py

@@ -0,0 +1,57 @@
+from fastapi import APIRouter, Depends, Form, Request
+from fastapi.responses import HTMLResponse, RedirectResponse
+from fastapi.templating import Jinja2Templates
+from sqlalchemy.orm import Session
+
+from app.core.auth import clear_auth_cookie, create_access_token, set_auth_cookie
+from app.core.config import get_settings
+from app.core.database import get_db
+from app.modules.auth.dependencies import get_current_user
+from app.modules.auth.schemas import UserOut
+from app.modules.auth.service import authenticate_user
+
+router = APIRouter(prefix="/auth", tags=["auth"])
+templates = Jinja2Templates(directory="app/templates")
+settings = get_settings()
+
+_NAV: list[dict] = []
+
+
+@router.get("/login", response_class=HTMLResponse)
+async def login_page(request: Request):
+    return templates.TemplateResponse(
+        request, "auth/login.html", {"nav_items": _NAV, "app_version": "0.1.0"}
+    )
+
+
+@router.post("/login", response_class=HTMLResponse)
+async def login(
+    request: Request,
+    username: str = Form(...),
+    password: str = Form(...),
+    db: Session = Depends(get_db),
+):
+    user = authenticate_user(db, username, password, ldap_enabled=settings.LDAP_ENABLED)
+    if user is None:
+        return templates.TemplateResponse(
+            request,
+            "auth/login.html",
+            {"nav_items": _NAV, "app_version": "0.1.0", "error": "Ungültige Zugangsdaten."},
+            status_code=401,
+        )
+    token = create_access_token(username=user.username, is_admin=user.is_admin)
+    response = RedirectResponse(url="/", status_code=303)
+    set_auth_cookie(response, token)
+    return response
+
+
+@router.get("/logout")
+async def logout():
+    response = RedirectResponse(url="/auth/login", status_code=303)
+    clear_auth_cookie(response)
+    return response
+
+
+@router.get("/me", response_model=UserOut)
+async def me(user=Depends(get_current_user)):
+    return user

app/templates/auth/login.html

@@ -0,0 +1,54 @@
+{% extends "base.html" %}
+
+{% block title %}Anmelden · EFI Hub{% endblock %}
+
+{% block content %}
+<div class="min-h-[80vh] flex items-center justify-center px-4">
+  <div class="w-full max-w-sm">
+
+    <div class="text-center mb-8">
+      <p class="text-xs font-semibold uppercase tracking-widest text-efi mb-1">
+        Fakultät EFI · TH Nürnberg
+      </p>
+      <h1 class="text-xl font-bold text-gray-900">Anmelden</h1>
+      <p class="text-sm text-gray-500 mt-1">Bitte melde dich mit deinen Zugangsdaten an.</p>
+    </div>
+
+    {% if error %}
+    <div class="mb-4 px-4 py-3 rounded-md bg-red-50 border border-red-200 text-sm text-red-700">
+      {{ error }}
+    </div>
+    {% endif %}
+
+    <form method="post" action="/auth/login" class="bg-white rounded-lg border border-gray-200 shadow-sm p-6 space-y-4">
+      <div>
+        <label class="block text-xs font-semibold text-gray-600 uppercase tracking-wide mb-1" for="username">
+          Benutzername
+        </label>
+        <input
+          id="username" name="username" type="text"
+          class="w-full border border-gray-300 rounded-md px-3 py-2 text-sm focus:outline-none focus:border-efi focus:ring-1 focus:ring-efi"
+          autocomplete="username" autofocus required
+        >
+      </div>
+      <div>
+        <label class="block text-xs font-semibold text-gray-600 uppercase tracking-wide mb-1" for="password">
+          Passwort
+        </label>
+        <input
+          id="password" name="password" type="password"
+          class="w-full border border-gray-300 rounded-md px-3 py-2 text-sm focus:outline-none focus:border-efi focus:ring-1 focus:ring-efi"
+          autocomplete="current-password" required
+        >
+      </div>
+      <button
+        type="submit"
+        class="w-full bg-efi text-white text-sm font-semibold py-2 px-4 rounded-md hover:opacity-90 transition-opacity"
+      >
+        Anmelden
+      </button>
+    </form>
+
+  </div>
+</div>
+{% endblock %}

tests/test_auth_router.py

@@ -0,0 +1,72 @@
+import pytest
+from fastapi.testclient import TestClient
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.pool import StaticPool
+
+from app.core.database import Base, get_db
+from app.main import app
+from app.modules.auth.models import User
+from app.modules.auth.service import hash_password
+
+
+@pytest.fixture(autouse=True)
+def override_db():
+    engine = create_engine(
+        "sqlite:///:memory:",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+    Base.metadata.create_all(bind=engine)
+    Session = sessionmaker(bind=engine)
+    session = Session()
+    app.dependency_overrides[get_db] = lambda: session
+    yield session
+    app.dependency_overrides.clear()
+    session.close()
+    Base.metadata.drop_all(bind=engine)
+
+
+@pytest.fixture
+def client():
+    return TestClient(app, follow_redirects=False)
+
+
+@pytest.fixture
+def alice(override_db):
+    user = User(username="alice", full_name="Alice Smith", pw_hash=hash_password("secret123"))
+    override_db.add(user)
+    override_db.commit()
+    return user
+
+
+def test_get_login_page(client):
+    response = client.get("/auth/login")
+    assert response.status_code == 200
+    assert "text/html" in response.headers["content-type"]
+    assert "Anmelden" in response.text
+
+
+def test_login_correct_credentials_redirects(client, alice):
+    response = client.post("/auth/login", data={"username": "alice", "password": "secret123"})
+    assert response.status_code in (302, 303, 307)
+    assert "access_token" in response.cookies
+
+
+def test_login_wrong_password_shows_error(client, alice):
+    response = client.post("/auth/login", data={"username": "alice", "password": "wrong"})
+    assert response.status_code == 200
+    assert "Ungültige" in response.text
+
+
+def test_login_unknown_user_shows_error(client):
+    response = client.post("/auth/login", data={"username": "ghost", "password": "any"})
+    assert response.status_code == 200
+    assert "Ungültige" in response.text
+
+
+def test_logout_clears_cookie(client, alice):
+    client.post("/auth/login", data={"username": "alice", "password": "secret123"})
+    response = client.get("/auth/logout")
+    assert response.status_code in (302, 303, 307)
+    assert response.cookies.get("access_token", "") == ""