lnbits-legend/lnbits/extensions/lnurlp/tasks.py

import asyncio
import json

import httpx
from loguru import logger

from lnbits.core.crud import update_payment_extra
from lnbits.core.models import Payment
from lnbits.helpers import get_current_extension_name
from lnbits.tasks import register_invoice_listener

from .crud import get_pay_link


async def wait_for_paid_invoices():
    invoice_queue = asyncio.Queue()
    register_invoice_listener(invoice_queue, get_current_extension_name())

    while True:
        payment = await invoice_queue.get()
        await on_invoice_paid(payment)


async def on_invoice_paid(payment: Payment):
    if payment.extra.get("tag") != "lnurlp":
        return

    if payment.extra.get("wh_status"):
        # this webhook has already been sent
        return

    pay_link = await get_pay_link(payment.extra.get("link", -1))
    if pay_link and pay_link.webhook_url:
        async with httpx.AsyncClient() as client:
            try:
                r: httpx.Response = await client.post(
                    pay_link.webhook_url,
                    json={
                        "payment_hash": payment.payment_hash,
                        "payment_request": payment.bolt11,
                        "amount": payment.amount,
                        "comment": payment.extra.get("comment"),
                        "lnurlp": pay_link.id,
                        "body": json.loads(pay_link.webhook_body)
                        if pay_link.webhook_body
                        else "",
                    },
                    headers=json.loads(pay_link.webhook_headers)
                    if pay_link.webhook_headers
                    else None,
                    timeout=40,
                )
                await mark_webhook_sent(
                    payment.payment_hash,
                    r.status_code,
                    r.is_success,
                    r.reason_phrase,
                    r.text,
                )
            except Exception as ex:
                logger.error(ex)
                await mark_webhook_sent(
                    payment.payment_hash, -1, False, "Unexpected Error", str(ex)
                )


async def mark_webhook_sent(
    payment_hash: str, status: int, is_success: bool, reason_phrase="", text=""
) -> None:

    await update_payment_extra(
        payment_hash,
        {
            "wh_status": status,  # keep for backwards compability
            "wh_success": is_success,
            "wh_message": reason_phrase,
            "wh_response": text,
        },
    )