# ABOUTME: Tests for configuration loading.
# ABOUTME: Verifies TOML parsing, defaults, and path override behavior.

from pathlib import Path

from moonlock.config import Config, load_config


class TestLoadConfig:
    """Tests for config loading."""

    def test_defaults_when_no_config_file(self, tmp_path: Path):
        nonexistent = tmp_path / "nonexistent.toml"
        config = load_config(config_paths=[nonexistent])
        assert config.background_path is None
        assert config.fingerprint_enabled is True

    def test_reads_background_path(self, tmp_path: Path):
        config_file = tmp_path / "moonlock.toml"
        config_file.write_text('background_path = "/usr/share/wallpapers/moon.jpg"\n')
        config = load_config(config_paths=[config_file])
        assert config.background_path == "/usr/share/wallpapers/moon.jpg"

    def test_reads_fingerprint_disabled(self, tmp_path: Path):
        config_file = tmp_path / "moonlock.toml"
        config_file.write_text("fingerprint_enabled = false\n")
        config = load_config(config_paths=[config_file])
        assert config.fingerprint_enabled is False

    def test_later_paths_override_earlier(self, tmp_path: Path):
        system_conf = tmp_path / "system.toml"
        system_conf.write_text('background_path = "/system/wallpaper.jpg"\n')
        user_conf = tmp_path / "user.toml"
        user_conf.write_text('background_path = "/home/user/wallpaper.jpg"\n')
        config = load_config(config_paths=[system_conf, user_conf])
        assert config.background_path == "/home/user/wallpaper.jpg"

    def test_partial_config_uses_defaults(self, tmp_path: Path):
        config_file = tmp_path / "moonlock.toml"
        config_file.write_text('background_path = "/some/path.jpg"\n')
        config = load_config(config_paths=[config_file])
        assert config.fingerprint_enabled is True