import json

import pytest

from v1.config import ConfigError, load_config


def _write_config(path, source):
    path.write_text(
        json.dumps(
            {
                "source": source,
                "model": {
                    "path": "models/best.pt",
                    "sha256": "a" * 64,
                    "confidence_threshold": 0.25,
                },
                "event": {
                    "keypoint_confidence_threshold": 0.4,
                    "suspect_window_seconds": 0.5,
                    "confirm_window_seconds": 1.8,
                    "recovery_window_seconds": 2.0,
                    "cooldown_seconds": 10.0,
                },
                "artifacts": {"event_dir": "artifacts/events"},
            },
            ensure_ascii=False,
        ),
        encoding="utf-8",
    )


def test_load_config_resolves_source_from_environment_variable(tmp_path, monkeypatch):
    config_file = tmp_path / "config.json"
    _write_config(
        config_file,
        {"id": "lobby-camera-01", "rtsp_url_env": "SILVER_POSE_RTSP_URL"},
    )
    monkeypatch.setenv("SILVER_POSE_RTSP_URL", "rtsp://demo.invalid/live")

    config = load_config(config_file)

    assert config.source_id == "lobby-camera-01"
    assert config.source_url == "rtsp://demo.invalid/live"
    assert config.event.confirm_window_seconds == 1.8


def test_load_config_rejects_embedded_source_address(tmp_path):
    config_file = tmp_path / "config.json"
    _write_config(
        config_file,
        {"id": "lobby-camera-01", "url": "rtsp://demo.invalid/live"},
    )

    with pytest.raises(ConfigError, match="rtsp_url_env"):
        load_config(config_file)


def test_runtime_config_version_is_stable_and_excludes_rtsp_address(tmp_path, monkeypatch):
    config_file = tmp_path / "config.json"
    _write_config(
        config_file,
        {"id": "lobby-camera-01", "rtsp_url_env": "SILVER_POSE_RTSP_URL"},
    )
    monkeypatch.setenv("SILVER_POSE_RTSP_URL", "rtsp://operator:secret@camera-a/live")
    first = load_config(config_file)
    monkeypatch.setenv("SILVER_POSE_RTSP_URL", "rtsp://operator:other-secret@camera-b/live")
    second = load_config(config_file)

    assert first.runtime_config_version == second.runtime_config_version
    assert first.runtime_config_version.startswith("cfg-")