from __future__ import annotations

import httpx

from cpv3.infrastructure.settings import get_settings
from cpv3.modules.transcription.schemas import Document


async def generate_captions(
    *, video_s3_path: str, folder: str, transcription: Document
) -> str:
    """Generate captions for a video using the Remotion service."""
    settings = get_settings()

    payload = {
        "folder": folder,
        "videoSrc": video_s3_path,
        "transcription": transcription.model_dump(),
    }

    async with httpx.AsyncClient(timeout=300) as client:
        resp = await client.post(
            f"{settings.remotion_service_url}/api/render", json=payload
        )
        resp.raise_for_status()
        data = resp.json()

    if not isinstance(data, dict) or "output" not in data:
        raise RuntimeError("Unexpected response from remotion service")

    return str(data["output"])