from fastapi.testclient import TestClient

from app import session
from app.main import app

client = TestClient(app)


def _cookie_sessao_admin() -> dict:
    return {session.SESSION_COOKIE_NAME: session.criar_token("admin", "admin", "ADMIN")}


def test_raiz_sem_login_redireciona_para_login():
    resposta = client.get("/", follow_redirects=False)
    assert resposta.status_code == 303
    assert resposta.headers["location"] == "/login?next=/"


def test_docs_desabilitado_retorna_404():
    assert client.get("/docs").status_code == 404
    assert client.get("/redoc").status_code == 404
    assert client.get("/openapi.json").status_code == 404


def test_raiz_redireciona_para_clientes_com_login(monkeypatch):
    from app.routers import clientes as router_clientes

    monkeypatch.setattr(router_clientes.db_clientes, "listar_clientes", lambda busca=None, limite=100, offset=0, ordenar_por="razao", direcao="asc": [])
    monkeypatch.setattr(router_clientes.db_clientes, "contar_clientes", lambda busca=None, ordenar_por="razao": 0)
    resposta = client.get("/", cookies=_cookie_sessao_admin(), follow_redirects=False)
    assert resposta.status_code == 307
    assert resposta.headers["location"] == "/clientes"


def test_csrf_middleware_define_cookie_em_qualquer_resposta():
    client.cookies.clear()
    resposta = client.get("/docs")
    assert resposta.status_code == 404
    assert "csrf_token" in resposta.cookies


def test_csrf_bloqueia_post_com_token_que_nao_bate_com_cookie():
    client.cookies.clear()
    resposta = client.post(
        "/clientes/1/excluir", cookies=_cookie_sessao_admin(), data={"csrf_token": "token-forjado-sem-cookie"}
    )
    assert resposta.status_code == 403


def test_csrf_libera_post_quando_token_bate_com_cookie(monkeypatch):
    from app.routers import clientes as router_clientes

    monkeypatch.setattr(router_clientes.db_clientes, "excluir_cliente", lambda cliente_id: None)

    client.cookies.clear()
    client.get("/docs")  # só para o middleware definir o cookie csrf_token no client de teste
    token_cookie = client.cookies.get("csrf_token")
    assert token_cookie

    cookies = {**_cookie_sessao_admin(), "csrf_token": token_cookie}
    resposta = client.post(
        "/clientes/1/excluir", cookies=cookies, data={"csrf_token": token_cookie}, follow_redirects=False
    )
    assert resposta.status_code == 303