from __future__ import annotations

from pathlib import Path
from typing import Any

import pytest
from ruamel.yaml import YAML

VALID_CONFIG: dict[str, Any] = {
    "general": {
        "figure_folder": "music",
        "serial_port": "/dev/ttyUSB0",
        "min_volume": 0,
        "max_volume": 60,
        "initial_volume": 40,
    },
    "figures": {
        "fuchs": {"id": "04a1b2c3d4", "colors": ["#ff6600", "#ffcc00", "#331100", "wff"]},
        "eule": {"id": "04b2c3d4e5", "colors": ["#3355ff", "#66aaff", "#001133", "#ffffff"]},
    },
}


@pytest.fixture
def config_dir(tmp_path: Path) -> Path:
    """A directory with a valid ``music/`` tree and two figures' worth of tracks."""
    for figure, tracks in (("fuchs", 3), ("eule", 2)):
        folder = tmp_path / "music" / figure
        folder.mkdir(parents=True)
        for index in range(tracks):
            (folder / f"{index:02d} - track.mp3").write_bytes(b"")
    return tmp_path


def write_config(directory: Path, data: dict[str, Any], name: str = "config.yml") -> Path:
    path = directory / name
    with path.open("w", encoding="utf-8") as handle:
        YAML(typ="safe").dump(data, handle)
    return path