import logging

import httpx

logger = logging.getLogger(__name__)

MESSENGER_API_BASE = "https://graph.facebook.com/v22.0"


async def download_media(media_url: str) -> bytes | None:
    try:
        async with httpx.AsyncClient(timeout=httpx.Timeout(30.0)) as client:
            resp = await client.get(media_url)
            if resp.status_code == 200:
                return resp.content
            logger.warning(f"messenger media download failed: {resp.status_code}")
            return None
    except Exception:
        logger.exception("messenger media download error")
        return None


async def upload_attachment(
    page_id: str,
    access_token: str,
    file_data: bytes,
    file_name: str,
    media_type: str,
    mime_type: str,
) -> str | None:
    try:
        files = {
            "filedata": (file_name, file_data, mime_type),
        }
        data = {
            "message": str(
                {
                    "attachment": {
                        "type": media_type,
                        "payload": {"is_reusable": True},
                    }
                }
            ),
        }

        async with httpx.AsyncClient(timeout=httpx.Timeout(60.0)) as client:
            resp = await client.post(
                f"{MESSENGER_API_BASE}/{page_id}/message_attachments",
                params={"access_token": access_token},
                files=files,
                data=data,
            )
            if resp.status_code == 200:
                result = resp.json()
                attachment_id = result.get("attachment_id", "")
                logger.info(f"messenger attachment uploaded: {attachment_id}")
                return attachment_id
            logger.error(f"messenger attachment upload failed: {resp.status_code} {resp.text}")
            return None
    except Exception:
        logger.exception("messenger attachment upload error")
        return None