"""Generate the Asterisk fallback prompt 'gogo-fallback' (§15) — played when the
voice pipeline is unreachable. Uses the configured TTS provider.

Run:  python scripts/generate_fallback_audio.py [asterisk-sounds-dir]
Then place gogo-fallback.wav into Asterisk's sounds dir (or mount it in compose).
"""

from __future__ import annotations

import asyncio
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from gogo.voice.audio import pcm_to_wav  # noqa: E402
from gogo.voice.tts import make_tts  # noqa: E402

TEXT = (
    "Poštovani, trenutno nismo u mogućnosti primiti vaš poziv. "
    "Molimo pozovite kasnije, ili posjetite našu web stranicu. Hvala i prijatno!"
)


async def main() -> None:
    out_dir = Path(sys.argv[1] if len(sys.argv) > 1 else "./asterisk/sounds")
    out_dir.mkdir(parents=True, exist_ok=True)
    tts, voice = make_tts()
    pcm = await tts.synthesize(TEXT, voice)
    path = out_dir / "gogo-fallback.wav"
    path.write_bytes(pcm_to_wav(pcm))
    print(f"wrote {path} ({len(pcm) // 16} ms)")


if __name__ == "__main__":
    asyncio.run(main())