import httpx

GRAPH_API_VERSION = "v20.0"
GRAPH_API_BASE = f"https://graph.facebook.com/{GRAPH_API_VERSION}"


async def send_text_message(phone_number_id: str, access_token: str, to: str, text: str) -> None:
    url = f"{GRAPH_API_BASE}/{phone_number_id}/messages"
    payload = {
        "messaging_product": "whatsapp",
        "to": to,
        "type": "text",
        "text": {"body": text},
    }
    async with httpx.AsyncClient() as client:
        response = await client.post(
            url,
            json=payload,
            headers={"Authorization": f"Bearer {access_token}"},
        )
    response.raise_for_status()