"""bgm 수동 확인용. **Suno는 실제 과금이 나간다.**

사용: uv run python -m tests.poster_alive.test_bgm <포스터경로>
test_result/<이름>.narration.txt(bgm_style)와 <이름>.tts.txt(total)를 재사용한다.
없으면 앞 단계부터 돌린다. 결과는 <이름>.bgm.mp3 와 <이름>.bgm.txt.
"""
import asyncio
import json
import sys
from pathlib import Path

from models.tts import NarrationTimeline
from services.bgm import generate_bgm
from services.tts import synthesize
from tests.poster_alive.test_tts import load_narration

TEST_RESULT_DIR = Path(__file__).parent.parent / "test_result" / "poster_alive"


async def load_timeline(sentences: list[str], voice: str, timeline_path: Path
                        ) -> NarrationTimeline:
    if timeline_path.exists():
        return NarrationTimeline.model_validate_json(timeline_path.read_text(encoding="utf-8"))
    audio = await synthesize(sentences, voice)
    timeline_path.write_text(audio.timeline.model_dump_json(indent=2), encoding="utf-8")
    return audio.timeline


async def main() -> None:
    poster_path = Path(sys.argv[1])
    TEST_RESULT_DIR.mkdir(exist_ok=True)
    output_base = TEST_RESULT_DIR / poster_path.stem

    answer = await load_narration(poster_path, output_base)
    timeline = await load_timeline(answer.narration, answer.voice,
                                   output_base.with_suffix(".tts.txt"))

    print(f"나레이션 {timeline.total}s → BGM 요청")
    print(f"  style : {answer.bgm_style.style}")
    print(f"  prompt: {answer.bgm_style.prompt}")
    print("Suno 생성 시작 — 최대 5분 폴링, 과금됩니다.")

    audio = await generate_bgm(answer.bgm_style, timeline.total, title=poster_path.stem)

    mp3_path = output_base.with_suffix(".bgm.mp3")
    meta_path = output_base.with_suffix(".bgm.txt")
    mp3_path.write_bytes(audio.mp3)
    meta_path.write_text(json.dumps(
        {"task_id": audio.task_id, "seconds": audio.seconds, "duration": audio.duration,
         "style": answer.bgm_style.style, "prompt": answer.bgm_style.prompt},
        ensure_ascii=False, indent=2), encoding="utf-8")

    print(f"\n목표 {audio.seconds}s → 실제 {audio.duration}s (taskId={audio.task_id})")
    print(f"{mp3_path}\n{meta_path}")


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