import pytest
from sqlalchemy import select

from app.models.analytics import AnalyticsEvent
from tests.conftest import TestSessionLocal


@pytest.mark.asyncio
async def test_ingest_event_sets_anon_cookie_and_derives_session_server_side(client):
    response = await client.post(
        "/api/web/event",
        json={
            "event_type": "cta_click",
            "page": "/pack-walks",
            "element": "Book Now [pricing-card]",
            "metadata": {
                "variant": "pricing-card-weekly",
                "destination": "/contact",
                "screen": "1920x1080",
                "nested": {"drop": True},
            },
        },
        headers={"referer": "https://goodwalk.example/pack-walks"},
    )

    assert response.status_code == 201, response.text
    assert "__gw_anon=" in response.headers.get("set-cookie", "")
    assert "HttpOnly" in response.headers.get("set-cookie", "")

    async with TestSessionLocal() as session:
        result = await session.execute(
            select(AnalyticsEvent).order_by(AnalyticsEvent.created_at.desc()).limit(1)
        )
        event = result.scalar_one()

    assert event.session_id
    assert event.metadata_["variant"] == "pricing-card-weekly"
    assert event.metadata_["destination"] == "/contact"
    assert event.metadata_["referrer"] == "https://goodwalk.example/pack-walks"
    assert "screen" not in event.metadata_
    assert "nested" not in event.metadata_