import pytest
from openvpncertupdate import load_settings_overrides, ConfigError


def _script_path(tmp_path):
    return str(tmp_path / "openvpncertupdate.py")


def test_default_path_missing_returns_empty_silently(tmp_path):
    overrides = load_settings_overrides(None, "", _script_path(tmp_path))
    assert overrides == {}


def test_default_path_found_loads_overrides(tmp_path):
    conf = tmp_path / "openvpncertupdate.py.conf"
    conf.write_text('EASYRSA_DIR = "/custom/easyrsa"\n')
    overrides = load_settings_overrides(None, "", _script_path(tmp_path))
    assert overrides == {"EASYRSA_DIR": "/custom/easyrsa"}


def test_explicit_cli_path_missing_raises(tmp_path):
    missing = str(tmp_path / "missing.conf")
    with pytest.raises(ConfigError, match=missing):
        load_settings_overrides(missing, "", _script_path(tmp_path))


def test_explicit_configured_path_missing_raises(tmp_path):
    missing = str(tmp_path / "missing2.conf")
    with pytest.raises(ConfigError, match=missing):
        load_settings_overrides(None, missing, _script_path(tmp_path))


def test_cli_path_takes_priority_over_configured_path(tmp_path):
    cli_conf = tmp_path / "from_cli.conf"
    cli_conf.write_text('EASYRSA_DIR = "/from/cli"\n')
    configured_conf = tmp_path / "from_configured.conf"
    configured_conf.write_text('EASYRSA_DIR = "/from/configured"\n')

    overrides = load_settings_overrides(str(cli_conf), str(configured_conf), _script_path(tmp_path))
    assert overrides == {"EASYRSA_DIR": "/from/cli"}


def test_unrecognized_and_config_path_names_are_filtered_out(tmp_path):
    conf = tmp_path / "openvpncertupdate.py.conf"
    conf.write_text(
        'EASYRSA_DIR = "/custom/easyrsa"\n'
        'SOME_RANDOM_NAME = "y"\n'
        'CONFIG_PATH = "/should/not/apply"\n'
    )
    overrides = load_settings_overrides(None, "", _script_path(tmp_path))
    assert overrides == {"EASYRSA_DIR": "/custom/easyrsa"}


def test_comments_and_non_string_types_supported(tmp_path):
    conf = tmp_path / "openvpncertupdate.py.conf"
    conf.write_text(
        "# a comment\n"
        "SMTP_PORT = 2525\n"
        'CA_PASSPHRASE = ""   # inline comment\n'
    )
    overrides = load_settings_overrides(None, "", _script_path(tmp_path))
    assert overrides == {"SMTP_PORT": 2525, "CA_PASSPHRASE": ""}