"""Play MP3 bytes via system player or bundled ffplay."""

from __future__ import annotations

import base64
import os
import shutil
import subprocess
import sys
import tempfile
from pathlib import Path

from voice_confirmation_client.core.paths import find_ffplay


def play_mp3_from_base64(b64: str) -> None:
    raw_b64 = "".join((b64 or "").split())
    if not raw_b64:
        raise ValueError("empty prompt_audio_mp3_base64")
    data = base64.b64decode(raw_b64, validate=False)
    with tempfile.NamedTemporaryFile(suffix=".mp3", delete=False) as f:
        f.write(data)
        tmp = f.name
    try:
        _play_mp3_path(Path(tmp))
    finally:
        try:
            os.unlink(tmp)
        except OSError:
            pass


def _play_mp3_path(path: Path) -> None:
    bundled = find_ffplay()
    if bundled and bundled.is_file():
        subprocess.run(
            [str(bundled), "-nodisp", "-autoexit", "-loglevel", "quiet", str(path)],
            check=True,
            timeout=600,
        )
        return
    ffplay = shutil.which("ffplay")
    if ffplay:
        subprocess.run(
            [ffplay, "-nodisp", "-autoexit", "-loglevel", "quiet", str(path)],
            check=True,
            timeout=600,
        )
        return
    if sys.platform == "darwin":
        subprocess.run(["afplay", str(path)], check=True, timeout=600)
        return
    if os.name == "nt":
        os.startfile(str(path))  # type: ignore[attr-defined]
        import time

        time.sleep(5)
        return
    raise RuntimeError(
        "No MP3 player found. Install ffmpeg (ffplay) or run on macOS with afplay."
    )