from pathlib import Path

import pytest

import reachy_mini_receptionist.config as config_mod


def test_config_raises_on_external_profile_name_collision(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    """Config should fail fast when external/built-in profile names collide."""
    external_profiles = tmp_path / "external_profiles"
    external_profiles.mkdir(parents=True)
    (external_profiles / "default").mkdir()

    monkeypatch.setattr(config_mod.Config, "PROFILES_DIRECTORY", external_profiles)
    monkeypatch.setattr(config_mod.Config, "TOOLS_DIRECTORY", None)

    with pytest.raises(RuntimeError, match="Ambiguous profile names"):
        config_mod.Config()


def test_config_raises_on_external_tool_name_collision(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    """Config should fail fast when external/built-in tool names collide."""
    external_tools = tmp_path / "external_tools"
    external_tools.mkdir(parents=True)
    (external_tools / "dance.py").write_text("# collision with built-in dance tool\n", encoding="utf-8")

    monkeypatch.setattr(config_mod.Config, "PROFILES_DIRECTORY", config_mod.DEFAULT_PROFILES_DIRECTORY)
    monkeypatch.setattr(config_mod.Config, "TOOLS_DIRECTORY", external_tools)

    with pytest.raises(RuntimeError, match="Ambiguous tool names"):
        config_mod.Config()


def test_config_raises_when_selected_external_profile_is_missing(
    tmp_path: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    """Config should fail fast when selected profile is absent from external root."""
    external_profiles = tmp_path / "external_profiles"
    external_profiles.mkdir(parents=True)

    monkeypatch.setattr(config_mod.Config, "REACHY_MINI_CUSTOM_PROFILE", "missing_profile")
    monkeypatch.setattr(config_mod.Config, "PROFILES_DIRECTORY", external_profiles)
    monkeypatch.setattr(config_mod.Config, "TOOLS_DIRECTORY", None)

    with pytest.raises(RuntimeError, match="Selected profile 'missing_profile' was not found"):
        config_mod.Config()