import os

from packages.config.settings import get_settings


def _with_env(**kwargs):
    old = {}
    for k, v in kwargs.items():
        old[k] = os.environ.get(k)
        os.environ[k] = v
    get_settings.cache_clear()
    return old


def _restore(old: dict):
    for k, v in old.items():
        if v is None:
            os.environ.pop(k, None)
        else:
            os.environ[k] = v
    get_settings.cache_clear()


def test_issue_token_ok():
    from apps.api.auth import expected_token, issue_token

    old = _with_env(
        AUTH_SECRET="unit-secret",
        ADMIN_USERNAME="admin",
        ADMIN_PASSWORD="pass123",
    )
    try:
        tok = issue_token("admin", "pass123")
        assert tok is not None
        assert tok == expected_token()
        assert issue_token("admin", "wrong") is None
        assert issue_token("wrong", "pass123") is None
    finally:
        _restore(old)


def test_auth_disabled():
    from apps.api.auth import auth_disabled

    old = _with_env(AUTH_SECRET="disabled")
    try:
        assert auth_disabled() is True
    finally:
        _restore(old)