mirror of
https://github.com/aljazceru/nutshell.git
synced 2025-12-20 18:44:20 +01:00
d8d3037cc5
* `PaymentResult` * ledger: rely on PaymentResult instead of paid flag. Double check for payments marked pending. * `None` is `PENDING` * make format * reflected changes API tests where `PaymentStatus` is used + reflected changes in lnbits * reflect changes in blink backend and tests * fix lnbits get_payment_status * remove paid flag * fix mypy * remove more paid flags * fix strike mypy * green * shorten all state checks * fix * fix some tests * gimme ✅ * fix............ * fix lnbits * fix error * lightning refactor * add more regtest tests * add tests for pending state and failure * shorten checks * use match case for startup check - and remember modified checking_id from pay_invoice * fix strike pending return * new tests? * refactor startup routine into get_melt_quote * test with purge * refactor blink * cleanup responses * blink: return checking_id on failure * fix lndgrpc try except * add more testing for melt branches * speed things up a bit * remove comments * remove comments * block pending melt quotes * remove comments --------- Co-authored-by: lollerfirst <lollerfirst@gmail.com>
258 lines
8.5 KiB
Python
258 lines
8.5 KiB
Python
# type: ignore
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import asyncio
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import json
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from typing import AsyncGenerator, Optional
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import httpx
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from bolt11 import (
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decode,
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)
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from ..core.base import Amount, MeltQuote, Unit
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from ..core.helpers import fee_reserve
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from ..core.models import PostMeltQuoteRequest
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from ..core.settings import settings
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from .base import (
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InvoiceResponse,
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LightningBackend,
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PaymentQuoteResponse,
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PaymentResponse,
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PaymentResult,
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PaymentStatus,
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StatusResponse,
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)
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class LNbitsWallet(LightningBackend):
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"""https://github.com/lnbits/lnbits"""
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supported_units = {Unit.sat}
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unit = Unit.sat
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supports_incoming_payment_stream: bool = True
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supports_description: bool = True
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def __init__(self, unit: Unit = Unit.sat, **kwargs):
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self.assert_unit_supported(unit)
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self.unit = unit
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self.endpoint = settings.mint_lnbits_endpoint
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self.client = httpx.AsyncClient(
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verify=not settings.debug,
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headers={"X-Api-Key": settings.mint_lnbits_key},
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)
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async def status(self) -> StatusResponse:
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try:
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r = await self.client.get(url=f"{self.endpoint}/api/v1/wallet", timeout=15)
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r.raise_for_status()
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except Exception as exc:
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return StatusResponse(
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error_message=f"Failed to connect to {self.endpoint} due to: {exc}",
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balance=0,
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)
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try:
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data: dict = r.json()
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except Exception:
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return StatusResponse(
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error_message=(
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f"Received invalid response from {self.endpoint}: {r.text}"
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),
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balance=0,
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)
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if "detail" in data:
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return StatusResponse(
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error_message=f"LNbits error: {data['detail']}", balance=0
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)
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return StatusResponse(error_message=None, balance=data["balance"])
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async def create_invoice(
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self,
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amount: Amount,
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memo: Optional[str] = None,
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description_hash: Optional[bytes] = None,
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unhashed_description: Optional[bytes] = None,
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) -> InvoiceResponse:
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self.assert_unit_supported(amount.unit)
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data = {"out": False, "amount": amount.to(Unit.sat).amount}
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if description_hash:
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data["description_hash"] = description_hash.hex()
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if unhashed_description:
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data["unhashed_description"] = unhashed_description.hex()
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data["memo"] = memo or ""
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try:
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r = await self.client.post(
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url=f"{self.endpoint}/api/v1/payments", json=data
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)
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r.raise_for_status()
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except Exception:
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return InvoiceResponse(
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ok=False,
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error_message=r.json()["detail"],
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)
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data = r.json()
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checking_id, payment_request = data["checking_id"], data["payment_request"]
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return InvoiceResponse(
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ok=True,
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checking_id=checking_id,
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payment_request=payment_request,
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)
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async def pay_invoice(
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self, quote: MeltQuote, fee_limit_msat: int
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) -> PaymentResponse:
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try:
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r = await self.client.post(
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url=f"{self.endpoint}/api/v1/payments",
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json={"out": True, "bolt11": quote.request},
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timeout=None,
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)
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r.raise_for_status()
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except Exception:
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return PaymentResponse(
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result=PaymentResult.FAILED, error_message=r.json()["detail"]
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)
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if r.status_code > 299:
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return PaymentResponse(
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result=PaymentResult.FAILED,
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error_message=(f"HTTP status: {r.reason_phrase}",),
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)
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if "detail" in r.json():
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return PaymentResponse(
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result=PaymentResult.FAILED, error_message=(r.json()["detail"],)
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)
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data: dict = r.json()
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checking_id = data["payment_hash"]
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# we do this to get the fee and preimage
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payment: PaymentStatus = await self.get_payment_status(checking_id)
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return PaymentResponse(
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result=payment.result,
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checking_id=checking_id,
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fee=payment.fee,
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preimage=payment.preimage,
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)
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async def get_invoice_status(self, checking_id: str) -> PaymentStatus:
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try:
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r = await self.client.get(
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url=f"{self.endpoint}/api/v1/payments/{checking_id}"
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)
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r.raise_for_status()
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except Exception as e:
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return PaymentStatus(result=PaymentResult.UNKNOWN, error_message=str(e))
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data: dict = r.json()
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if data.get("detail"):
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return PaymentStatus(
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result=PaymentResult.UNKNOWN, error_message=data["detail"]
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)
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if data["paid"]:
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result = PaymentResult.SETTLED
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elif not data["paid"] and data["details"]["pending"]:
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result = PaymentResult.PENDING
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elif not data["paid"] and not data["details"]["pending"]:
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result = PaymentResult.FAILED
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else:
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result = PaymentResult.UNKNOWN
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return PaymentStatus(
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result=result,
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fee=Amount(unit=Unit.msat, amount=abs(data["details"]["fee"])),
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preimage=data["preimage"],
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)
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async def get_payment_status(self, checking_id: str) -> PaymentStatus:
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try:
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r = await self.client.get(
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url=f"{self.endpoint}/api/v1/payments/{checking_id}"
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)
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r.raise_for_status()
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except httpx.HTTPStatusError as e:
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if e.response.status_code != 404:
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raise e
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return PaymentStatus(
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result=PaymentResult.UNKNOWN, error_message=e.response.text
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)
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data = r.json()
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if "paid" not in data and "details" not in data:
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return PaymentStatus(
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result=PaymentResult.UNKNOWN, error_message="invalid response"
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)
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if data["paid"]:
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result = PaymentResult.SETTLED
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elif not data["paid"] and data["details"]["pending"]:
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result = PaymentResult.PENDING
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elif not data["paid"] and not data["details"]["pending"]:
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result = PaymentResult.FAILED
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else:
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result = PaymentResult.UNKNOWN
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return PaymentStatus(
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result=result,
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fee=Amount(unit=Unit.msat, amount=abs(data["details"]["fee"])),
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preimage=data.get("preimage"),
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)
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async def get_payment_quote(
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self, melt_quote: PostMeltQuoteRequest
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) -> PaymentQuoteResponse:
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invoice_obj = decode(melt_quote.request)
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assert invoice_obj.amount_msat, "invoice has no amount."
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amount_msat = int(invoice_obj.amount_msat)
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fees_msat = fee_reserve(amount_msat)
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fees = Amount(unit=Unit.msat, amount=fees_msat)
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amount = Amount(unit=Unit.msat, amount=amount_msat)
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return PaymentQuoteResponse(
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checking_id=invoice_obj.payment_hash,
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fee=fees.to(self.unit, round="up"),
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amount=amount.to(self.unit, round="up"),
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)
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async def paid_invoices_stream(self) -> AsyncGenerator[str, None]:
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url = f"{self.endpoint}/api/v1/payments/sse"
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try:
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sse_headers = self.client.headers.copy()
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sse_headers.update(
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{
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"accept": "text/event-stream",
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"cache-control": "no-cache",
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"connection": "keep-alive",
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}
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)
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async with self.client.stream(
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"GET",
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url,
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content="text/event-stream",
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timeout=None,
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headers=sse_headers,
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) as r:
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sse_trigger = False
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async for line in r.aiter_lines():
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# The data we want to listen to is of this shape:
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# event: payment-received
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# data: {.., "payment_hash" : "asd"}
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if line.startswith("event: payment-received"):
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sse_trigger = True
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continue
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elif sse_trigger and line.startswith("data:"):
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data = json.loads(line[len("data:") :])
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sse_trigger = False
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yield data["payment_hash"]
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else:
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sse_trigger = False
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except (OSError, httpx.ReadError, httpx.ConnectError, httpx.ReadTimeout):
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pass
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await asyncio.sleep(1)
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