import pytest
import yaml

from frg.configuration import Config, get_configuration


@pytest.fixture(autouse=True)
def mock_env(tmp_path, monkeypatch):
    monkeypatch.setenv("HOME", str(tmp_path))


def test_get_configuration_fails_if_noexist():
    with pytest.raises(FileNotFoundError):
        get_configuration(path="does-not-exist.yml")


def test_get_configuration_default_if_no_path_provided(tmp_path):
    config_dir = tmp_path / ".config"
    config_file = config_dir / "frg.yaml"

    config_dir.mkdir()

    mock_config = {"domain_aliases": {"a": "b"}}
    config_file.write_text(yaml.dump(mock_config))

    config_data = get_configuration()

    assert config_data.domain_aliases == mock_config["domain_aliases"]


def test_get_configuration_use_path_provided(tmp_path):
    config_dir = tmp_path / ".config"
    config_file = config_dir / "frg.yaml"
    custom_config_file = tmp_path / "my_config.yaml"

    config_dir.mkdir()

    mock_config = {"domain_aliases": {"a": "b"}}

    mock_config_ignored = {"domain_aliases": {"c": "d"}}
    config_file.write_text(yaml.dump(mock_config_ignored))
    custom_config_file.write_text(yaml.dump(mock_config))

    config_data = get_configuration(path=str(custom_config_file))

    assert config_data.domain_aliases == mock_config["domain_aliases"]


def test_get_configuration_parses_config(tmp_path):
    config_dir = tmp_path / ".config"
    config_file = config_dir / "frg.yaml"

    config_dir.mkdir()

    mock_config = {"domain_aliases": {"a": "b"}}

    expected = Config(**mock_config)
    config_file.write_text(yaml.dump(mock_config))

    config_data = get_configuration()

    assert config_data == expected