import pytest
from pydantic import ValidationError

from arbitrade.config.settings import Settings


def test_dashboard_auth_requires_both_fields() -> None:
    with pytest.raises(ValidationError):
        Settings(_env_file=None, DASHBOARD_AUTH_USERNAME="admin")


def test_kraken_api_auth_requires_key_and_secret() -> None:
    with pytest.raises(ValidationError):
        Settings(
            _env_file=None,
            KRAKEN_API_KEY="key-only",
            KRAKEN_API_SECRET="",
        )


def test_kraken_permissions_require_query_and_trade() -> None:
    with pytest.raises(ValidationError):
        Settings(
            _env_file=None,
            KRAKEN_API_KEY="k",
            KRAKEN_API_SECRET="s",
            KRAKEN_API_KEY_PERMISSIONS="query",
        )


def test_kraken_permissions_forbid_withdrawal_scope() -> None:
    with pytest.raises(ValidationError):
        Settings(
            _env_file=None,
            KRAKEN_API_KEY="k",
            KRAKEN_API_SECRET="s",
            KRAKEN_API_KEY_PERMISSIONS="query,trade,withdraw",
        )


def test_alert_min_severity_is_validated() -> None:
    with pytest.raises(ValidationError):
        Settings(_env_file=None, ALERT_MIN_SEVERITY="nope")


def test_valid_security_configuration_passes() -> None:
    settings = Settings(
        _env_file=None,
        KRAKEN_API_KEY="k",
        KRAKEN_API_SECRET="s",
        KRAKEN_API_KEY_PERMISSIONS="query,trade",
        ALERT_MIN_SEVERITY="warning",
    )

    assert settings.kraken_api_key_permissions == "query,trade"


def test_stat_arb_entry_zscore_must_exceed_exit_zscore() -> None:
    with pytest.raises(ValidationError):
        Settings(
            _env_file=None,
            STRATEGY_STAT_ARB_ENTRY_ZSCORE="0.5",
            STRATEGY_STAT_ARB_EXIT_ZSCORE="0.5",
        )


def test_stat_arb_lookback_window_must_be_at_least_two() -> None:
    with pytest.raises(ValidationError):
        Settings(
            _env_file=None,
            STRATEGY_STAT_ARB_LOOKBACK_WINDOW="1",
        )