from collections.abc import Generator
from typing import Any

import pytest
from flask.testing import FlaskClient

from src.app import app, db


@pytest.fixture
def client() -> Generator[FlaskClient, Any, Any]:
    app.config["TESTING"] = True
    app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///:memory:"
    with app.app_context():
        db.create_all()
        yield app.test_client()
        db.drop_all()


def test_heartbeat_status_code(client: FlaskClient) -> None:
    response = client.get("/heartbeat")
    assert response.status_code == 200


def test_camera_start(client: FlaskClient) -> None:
    response = client.post("/camera/start")
    assert response.status_code == 200
    assert response.get_json()["status"] in ("started", "already_running")


def test_camera_stop(client: FlaskClient) -> None:
    client.post("/camera/start")
    response = client.post("/camera/stop")
    assert response.status_code == 200
    assert response.get_json()["status"] in ("stopped", "already_stopped")


def test_double_start_is_idempotent(client):
    client.post("/camera/start")
    res = client.post("/camera/start")
    assert res.get_json()["status"] == "already_running"


def test_camera_status(client: FlaskClient) -> None:
    response = client.get("/camera/status")
    assert response.status_code == 200
    data = response.get_json()
    assert "running" in data
    assert "ready" in data
    assert "updated_at" in data


def test_camera_log(client):
    client.post("/camera/start")
    client.post("/camera/stop")
    res = client.get("/camera/log")
    assert res.status_code == 200
    events = res.get_json()
    assert len(events) == 2
    assert events[0]["action"] == "stop"  # most recent first
    assert events[1]["action"] == "start"
    assert "ip_address" in events[0]
    assert "timestamp" in events[0]


def test_hls_404_when_not_running(client: FlaskClient) -> None:
    response = client.get("/camera/hls/stream.m3u8")
    assert response.status_code == 404


def test_index_page(client: FlaskClient) -> None:
    response = client.get("/")
    assert response.status_code == 200
    assert b"Pi Camera" in response.data