"""Entry point: INV-5, offline before torch/transformers load. Contract: intern-decision-serve.contract.md."""
import os

from fake_engine import FakeEngine


def test_app_from_env_goes_offline_before_the_engine_loads(monkeypatch):
    from intern_decision_serve import engine as engine_module
    from intern_decision_serve import main
    seen = {}

    def fake_load(settings, **_kw):
        seen["offline"] = (os.environ.get("HF_HUB_OFFLINE"), os.environ.get("TRANSFORMERS_OFFLINE"))
        seen["token"] = settings.api_token
        return FakeEngine()

    monkeypatch.delenv("HF_HUB_OFFLINE", raising=False)
    monkeypatch.delenv("TRANSFORMERS_OFFLINE", raising=False)
    monkeypatch.setenv("INTERN_DECISION_API_TOKEN", "k" * 40)
    monkeypatch.setattr(engine_module.TorchEngine, "load", staticmethod(fake_load))
    app = main.app_from_env()
    assert seen == {"offline": ("1", "1"), "token": "k" * 40}
    assert app.title == "intern-decision-serve"