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.auth import create_access_token
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 auth_cookies(override_db):
    user = User(username="testuser", full_name="Test User", pw_hash=hash_password("pw"))
    override_db.add(user)
    override_db.commit()
    token = create_access_token(username="testuser", is_admin=False)
    return {"access_token": token}


def test_landing_without_auth_redirects(client):
    response = client.get("/")
    assert response.status_code == 307
    assert "/auth/login" in response.headers["location"]


def test_landing_returns_html(client, auth_cookies):
    response = client.get("/", cookies=auth_cookies)
    assert response.status_code == 200
    assert "text/html" in response.headers["content-type"]


def test_landing_contains_title(client, auth_cookies):
    response = client.get("/", cookies=auth_cookies)
    assert "University Process Hub" in response.text


def test_landing_contains_rss_module(client, auth_cookies):
    response = client.get("/", cookies=auth_cookies)
    assert "RSS-Feed Server" in response.text


def test_landing_navbar_links_present(client, auth_cookies):
    response = client.get("/", cookies=auth_cookies)
    assert "Übersicht" in response.text


def test_landing_info_strip_shows_db_mode(client, auth_cookies):
    response = client.get("/", cookies=auth_cookies)
    assert "SQLite" in response.text or "MariaDB" in response.text