"""Unit tests for the frontend endpoints (GET /, static assets) -- module 5 phase 4 §7.
Uses FastAPI's TestClient without entering it as a context manager, so the app's `lifespan`
(which needs a live kb-postgres DSN, app/main.py:34-49) never runs -- `/` and `/static/*` don't
touch `app.state`, so this is safe and keeps these tests DB-free like the rest of the suite.
`/search`/`/healthz` behavior is covered separately (tests/test_search.py) against the
DB-independent `run_search` core, not through this TestClient."""
from __future__ import annotations

import pathlib
import sys

sys.path.insert(0, str(pathlib.Path(__file__).resolve().parents[1]))

from fastapi.testclient import TestClient  # noqa: E402

from app.main import app  # noqa: E402

client = TestClient(app)


class TestIndex:
    def test_returns_html(self):
        response = client.get("/")
        assert response.status_code == 200
        assert response.headers["content-type"].startswith("text/html")

    def test_contains_search_form_and_polish_copy(self):
        response = client.get("/")
        assert 'id="search-form"' in response.text
        assert 'id="query"' in response.text
        assert 'id="mode-flat"' in response.text
        assert "Wyszukiwarka KB" in response.text

    def test_references_static_assets(self):
        response = client.get("/")
        assert "/static/app.js" in response.text
        assert "/static/style.css" in response.text


class TestStaticAssets:
    def test_app_js_served(self):
        response = client.get("/static/app.js")
        assert response.status_code == 200
        assert "buildSearchUrl" in response.text

    def test_style_css_served(self):
        response = client.get("/static/style.css")
        assert response.status_code == 200
