from __future__ import annotations

from ha_deconz_bridge.settings import Settings


def test_from_env_uses_dataclass_defaults(monkeypatch) -> None:
    monkeypatch.delenv("HA_DECONZ_BRIDGE_DECONZ_RETRY_TIMEOUT", raising=False)
    monkeypatch.delenv("HA_DECONZ_BRIDGE_MQTT_HOST", raising=False)
    monkeypatch.delenv("HA_DECONZ_BRIDGE_TARGET_CACHE_SCALE", raising=False)
    monkeypatch.delenv("HOME_LIGHTS_DECONZ_RETRY_TIMEOUT", raising=False)
    monkeypatch.delenv("HOME_LIGHTS_MQTT_HOST", raising=False)
    monkeypatch.delenv("HOME_LIGHTS_TARGET_CACHE_SCALE", raising=False)

    settings = Settings.from_env()

    assert settings.mqtt_host == "homeassistant"
    assert settings.deconz_retry_timeout == 2.0
    assert settings.target_cache_scale == 10000


def test_from_env_reads_target_cache_scale(monkeypatch) -> None:
    monkeypatch.setenv("HA_DECONZ_BRIDGE_TARGET_CACHE_SCALE", "750")

    settings = Settings.from_env()

    assert settings.target_cache_scale == 750


def test_from_env_reads_warmup_flag(monkeypatch) -> None:
    monkeypatch.setenv("HA_DECONZ_BRIDGE_WARMUP_ON_STARTUP", "false")

    settings = Settings.from_env()

    assert settings.warmup_on_startup is False


def test_from_env_keeps_legacy_prefix_fallback(monkeypatch) -> None:
    monkeypatch.delenv("HA_DECONZ_BRIDGE_MQTT_HOST", raising=False)
    monkeypatch.setenv("HOME_LIGHTS_MQTT_HOST", "legacy-host")

    settings = Settings.from_env()

    assert settings.mqtt_host == "legacy-host"