"""Live station monitor page and JSON proxy (#57)."""
from unittest.mock import patch

import pytest


@pytest.fixture
def mock_api():
    with patch("blueprints.monitor.api_client") as m:
        yield m


def _login(client, roles, is_admin=False):
    with client.session_transaction() as sess:
        sess["api_key"] = "k"
        sess["user"] = {"id": 2, "username": "u", "display_name": "U", "roles": roles,
                        "is_admin": is_admin, "language_pref": "en", "theme_pref": "light",
                        "active": True}
        sess["language"] = "en"


def test_page_ok_for_supervisor(client, mock_api):
    _login(client, ["Supervisor"])
    resp = client.get("/monitor")
    assert resp.status_code == 200 and b"stationMonitor" in resp.data


def test_page_forbidden_for_operator(client, mock_api):
    _login(client, ["MeasurementTec"])
    assert client.get("/monitor").status_code == 403
    assert client.get("/monitor/api/runs").status_code == 403


def test_proxy_returns_backend_json(client, mock_api):
    _login(client, ["Supervisor"])
    mock_api.get.return_value = [{"id": 1, "station_code": "ST-1"}]
    resp = client.get("/monitor/api/runs")
    assert resp.status_code == 200 and resp.get_json()[0]["station_code"] == "ST-1"
    mock_api.get.assert_called_once_with("/api/production-runs/open")


def test_proxy_passes_backend_error(client, mock_api):
    _login(client, [], is_admin=True)
    mock_api.get.return_value = {"error": True, "status_code": 403, "detail": "no"}
    resp = client.get("/monitor/api/runs")
    assert resp.status_code == 403 and resp.get_json()["error"] is True