"""Smoke tests for the vision service in STUB mode (no model weights needed)."""

from __future__ import annotations

from fastapi.testclient import TestClient

from vision_service.app import app


def make_client() -> TestClient:
    # TestClient runs the lifespan, building the (stub) recognizer.
    return TestClient(app)


def test_health_ok_in_stub_mode() -> None:
    with make_client() as client:
        res = client.get("/health")
        assert res.status_code == 200
        body = res.json()
        assert body["status"] == "ok"
        assert body["ready"] is True
        assert body["recognizer"] == "stub"
        assert body["model_version"] == "stub-0"


def test_analyze_returns_contract_shape() -> None:
    with make_client() as client:
        # The stub recognizes nothing, but the response must match the contract.
        res = client.post(
            "/analyze",
            content=b"\xff\xd8\xff\xe0not-a-real-jpeg",
            headers={"content-type": "application/octet-stream"},
        )
        assert res.status_code == 200
        body = res.json()
        assert body["plate"] is None
        assert body["plates"] == []
        assert body["vehicle"] is None
        assert body["low_confidence"] is False
        assert body["model_version"] == "stub-0"
        assert "took_ms" in body


def test_analyze_rejects_empty_body() -> None:
    with make_client() as client:
        res = client.post(
            "/analyze",
            content=b"",
            headers={"content-type": "application/octet-stream"},
        )
        assert res.status_code == 400