lnbits-legend/lnbits/extensions/lnurlpayout/tasks.py
2022-02-11 10:03:26 +00:00

90 lines
3.3 KiB
Python

import asyncio
from http import HTTPStatus
import httpx
from starlette.exceptions import HTTPException
from lnbits.core import db as core_db
from lnbits.core.crud import get_wallet
from lnbits.core.models import Payment
from lnbits.core.services import pay_invoice
from lnbits.core.views.api import api_payments_decode
from lnbits.tasks import register_invoice_listener
from .crud import get_lnurlpayout_from_wallet
async def wait_for_paid_invoices():
invoice_queue = asyncio.Queue()
register_invoice_listener(invoice_queue)
while True:
payment = await invoice_queue.get()
await on_invoice_paid(payment)
async def on_invoice_paid(payment: Payment) -> None:
try:
# Check its got a payout associated with it
lnurlpayout_link = await get_lnurlpayout_from_wallet(payment.wallet_id)
print("LNURLpayout", lnurlpayout_link)
if lnurlpayout_link:
# Check the wallet balance is more than the threshold
wallet = await get_wallet(lnurlpayout_link.wallet)
threshold = lnurlpayout_link.threshold + (lnurlpayout_link.threshold * 0.02)
if wallet.balance < threshold:
return
# Get the invoice from the LNURL to pay
async with httpx.AsyncClient() as client:
try:
url = await api_payments_decode({"data": lnurlpayout_link.lnurlpay})
if str(url["domain"])[0:4] != "http":
raise HTTPException(
status_code=HTTPStatus.FORBIDDEN, detail="LNURL broken"
)
try:
r = await client.get(str(url["domain"]), timeout=40)
res = r.json()
try:
r = await client.get(
res["callback"]
+ "?amount="
+ str(
int((wallet.balance - wallet.balance * 0.02) * 1000)
),
timeout=40,
)
res = r.json()
if hasattr(res, "status") and res["status"] == "ERROR":
raise HTTPException(
status_code=HTTPStatus.FORBIDDEN,
detail=res["reason"],
)
try:
await pay_invoice(
wallet_id=payment.wallet_id,
payment_request=res["pr"],
extra={"tag": "lnurlpayout"},
)
return
except:
pass
except Exception as e:
print("ERROR", str(e))
return
except (httpx.ConnectError, httpx.RequestError):
return
except Exception:
raise HTTPException(
status_code=HTTPStatus.FORBIDDEN,
detail="Failed to save LNURLPayout",
)
except:
return