231 lines
8.2 KiB
Python
231 lines
8.2 KiB
Python
import asyncio
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import json
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from collections.abc import AsyncGenerator
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import httpx
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from loguru import logger
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from websockets import connect
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from lnbits.helpers import normalize_endpoint
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from lnbits.settings import settings
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from .base import (
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InvoiceResponse,
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PaymentFailedStatus,
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PaymentPendingStatus,
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PaymentResponse,
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PaymentStatus,
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PaymentSuccessStatus,
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StatusResponse,
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Wallet,
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)
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class LNbitsWallet(Wallet):
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"""https://github.com/lnbits/lnbits"""
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def __init__(self):
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if not settings.lnbits_endpoint:
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raise ValueError("cannot initialize LNbitsWallet: missing lnbits_endpoint")
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key = (
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settings.lnbits_key
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or settings.lnbits_admin_key
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or settings.lnbits_invoice_key
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)
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if not key:
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raise ValueError(
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"cannot initialize LNbitsWallet: "
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"missing lnbits_key or lnbits_admin_key or lnbits_invoice_key"
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)
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self.endpoint = normalize_endpoint(settings.lnbits_endpoint)
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self.ws_url = f"{self.endpoint.replace('http', 'ws', 1)}/api/v1/ws/{key}"
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self.headers = {"X-Api-Key": key, "User-Agent": settings.user_agent}
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self.client = httpx.AsyncClient(base_url=self.endpoint, headers=self.headers)
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async def cleanup(self):
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try:
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await self.client.aclose()
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except RuntimeError as e:
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logger.warning(f"Error closing wallet connection: {e}")
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async def status(self) -> StatusResponse:
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try:
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r = await self.client.get(url="/api/v1/wallet", timeout=15)
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r.raise_for_status()
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data = r.json()
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if len(data) == 0:
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return StatusResponse("no data", 0)
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if r.is_error or "balance" not in data:
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return StatusResponse(f"Server error: '{r.text}'", 0)
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return StatusResponse(None, data["balance"])
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except json.JSONDecodeError:
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return StatusResponse("Server error: 'invalid json response'", 0)
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except Exception as exc:
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logger.warning(exc)
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return StatusResponse(f"Unable to connect to {self.endpoint}.", 0)
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async def create_invoice(
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self,
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amount: int,
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memo: str | None = None,
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description_hash: bytes | None = None,
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unhashed_description: bytes | None = None,
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**kwargs,
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) -> InvoiceResponse:
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data: dict = {"out": False, "amount": amount, "memo": memo or ""}
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if kwargs.get("expiry"):
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data["expiry"] = kwargs["expiry"]
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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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try:
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r = await self.client.post(url="/api/v1/payments", json=data)
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r.raise_for_status()
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data = r.json()
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# Backwards compatibility for pre-v1 which used the key "payment_request"
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payment_str = data.get("bolt11") or data.get("payment_request")
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if r.is_error or not payment_str:
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error_message = data["detail"] if "detail" in data else r.text
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return InvoiceResponse(
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ok=False, error_message=f"Server error: '{error_message}'"
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)
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return InvoiceResponse(
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ok=True,
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checking_id=data["checking_id"],
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payment_request=payment_str,
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preimage=data.get("preimage"),
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)
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except json.JSONDecodeError:
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return InvoiceResponse(
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ok=False, error_message="Server error: 'invalid json response'"
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)
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except KeyError as exc:
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logger.warning(exc)
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return InvoiceResponse(
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ok=False, error_message="Server error: 'missing required fields'"
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)
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except Exception as exc:
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logger.warning(exc)
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return InvoiceResponse(
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ok=False, error_message=f"Unable to connect to {self.endpoint}."
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)
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async def pay_invoice(self, bolt11: str, fee_limit_msat: int) -> PaymentResponse:
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try:
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r = await self.client.post(
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url="/api/v1/payments",
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json={"out": True, "bolt11": bolt11},
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timeout=None,
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)
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r.raise_for_status()
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data = 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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success = True if payment.success else None
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return PaymentResponse(
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ok=success,
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checking_id=checking_id,
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fee_msat=payment.fee_msat,
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preimage=payment.preimage,
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)
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except httpx.HTTPStatusError as exc:
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try:
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logger.debug(exc)
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data = exc.response.json()
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error_message = f"Payment {data['status']}: {data['detail']}."
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if data["status"] == "failed":
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return PaymentResponse(ok=False, error_message=error_message)
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return PaymentResponse(error_message=error_message)
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except Exception as exc:
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error_message = f"Unable to connect to {self.endpoint}."
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return PaymentResponse(error_message=error_message)
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except json.JSONDecodeError:
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return PaymentResponse(
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error_message="Server error: 'invalid json response'"
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)
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except KeyError:
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return PaymentResponse(
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error_message="Server error: 'missing required fields'"
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)
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except Exception as exc:
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logger.info(f"Failed to pay invoice {bolt11}")
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logger.warning(exc)
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return PaymentResponse(
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error_message=f"Unable to connect to {self.endpoint}."
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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"/api/v1/payments/{checking_id}",
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)
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r.raise_for_status()
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data = r.json()
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if data.get("paid", False) is True:
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return PaymentSuccessStatus()
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return PaymentPendingStatus()
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except Exception:
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return PaymentPendingStatus()
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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(url=f"/api/v1/payments/{checking_id}")
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if r.is_error:
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return PaymentPendingStatus()
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data = r.json()
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if data.get("status") == "failed":
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return PaymentFailedStatus()
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if "paid" not in data or not data["paid"]:
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return PaymentPendingStatus()
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if "details" not in data:
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return PaymentPendingStatus()
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return PaymentSuccessStatus(
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fee_msat=data["details"]["fee"], preimage=data["preimage"]
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)
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except Exception:
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return PaymentPendingStatus()
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async def paid_invoices_stream(self) -> AsyncGenerator[str, None]:
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while settings.lnbits_running:
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try:
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async with connect(self.ws_url) as ws:
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logger.info("connected to LNbits fundingsource websocket.")
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while settings.lnbits_running:
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message = await ws.recv()
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message_dict = json.loads(message)
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if (
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message_dict
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and message_dict.get("payment")
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and message_dict["payment"].get("payment_hash")
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):
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payment_hash = message_dict["payment"]["payment_hash"]
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logger.info(f"payment-received: {payment_hash}")
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yield payment_hash
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except Exception as exc:
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logger.error(
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f"lost connection to LNbits fundingsource websocket: '{exc}'"
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"retrying in 5 seconds"
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)
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await asyncio.sleep(5)
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