"""
Tests for BATON-ARCH-013: Keep-alive mechanism / health endpoint.

Acceptance criteria:
1. GET /health returns HTTP 200 OK.
2. Response body contains JSON with {"status": "ok"}.
3. Endpoint does not require authorization (no token, no secret header needed).
4. Keep-alive loop is started when APP_URL is set, and NOT started when APP_URL is unset.
"""
from __future__ import annotations

import os

os.environ.setdefault("BOT_TOKEN", "test-bot-token")
os.environ.setdefault("CHAT_ID", "-1001234567890")
os.environ.setdefault("WEBHOOK_SECRET", "test-webhook-secret")
os.environ.setdefault("WEBHOOK_URL", "https://example.com/api/webhook/telegram")
os.environ.setdefault("FRONTEND_ORIGIN", "http://localhost:3000")

from unittest.mock import AsyncMock, patch

import pytest

from tests.conftest import make_app_client, temp_db


# ---------------------------------------------------------------------------
# Criterion 1 & 2 & 3 — GET /health → 200 OK, {"status": "ok"}, no auth
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_health_returns_200_ok():
    """GET /health должен вернуть HTTP 200 без какого-либо заголовка авторизации."""
    async with make_app_client() as client:
        response = await client.get("/health")

    assert response.status_code == 200


@pytest.mark.asyncio
async def test_health_returns_status_ok():
    """GET /health должен вернуть JSON содержащий {"status": "ok"}."""
    async with make_app_client() as client:
        response = await client.get("/health")

    data = response.json()
    assert data.get("status") == "ok"


# ---------------------------------------------------------------------------
# Criterion 4 — keep-alive task lifecycle
# ---------------------------------------------------------------------------


@pytest.mark.asyncio
async def test_keepalive_started_when_app_url_set():
    """Keep-alive задача должна стартовать при наличии APP_URL."""
    from backend.main import app

    with temp_db():
        with patch("backend.telegram.set_webhook", new_callable=AsyncMock):
            with patch("backend.config.APP_URL", "https://example.com"):
                with patch("backend.main._keep_alive_loop", new_callable=AsyncMock) as mock_loop:
                    async with app.router.lifespan_context(app):
                        pass

    # asyncio.create_task вызывается с корутиной _keep_alive_loop — проверяем что она была вызвана
    assert mock_loop.called


@pytest.mark.asyncio
async def test_keepalive_not_started_when_app_url_unset():
    """Keep-alive задача НЕ должна стартовать при отсутствии APP_URL."""
    from backend.main import app

    with temp_db():
        with patch("backend.telegram.set_webhook", new_callable=AsyncMock):
            with patch("backend.config.APP_URL", None):
                with patch("backend.main._keep_alive_loop", new_callable=AsyncMock) as mock_loop:
                    async with app.router.lifespan_context(app):
                        pass

    assert not mock_loop.called