128 lines
4.3 KiB
Python
128 lines
4.3 KiB
Python
import httpx
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import json
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import base64
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from os import getenv
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from typing import Optional, Dict, AsyncGenerator
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from lnbits import bolt11
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from .base import InvoiceResponse, PaymentResponse, PaymentStatus, Wallet
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class LndRestWallet(Wallet):
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"""https://api.lightning.community/rest/index.html#lnd-rest-api-reference"""
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def __init__(self):
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endpoint = getenv("LND_REST_ENDPOINT")
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self.endpoint = endpoint[:-1] if endpoint.endswith("/") else endpoint
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self.auth_admin = {"Grpc-Metadata-macaroon": getenv("LND_REST_ADMIN_MACAROON")}
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self.auth_invoice = {"Grpc-Metadata-macaroon": getenv("LND_REST_INVOICE_MACAROON")}
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self.auth_cert = getenv("LND_REST_CERT")
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def create_invoice(
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self, amount: int, memo: Optional[str] = None, description_hash: Optional[bytes] = None
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) -> InvoiceResponse:
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data: Dict = {
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"value": amount,
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"private": True,
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}
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if description_hash:
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data["description_hash"] = base64.b64encode(description_hash).decode("ascii")
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else:
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data["memo"] = memo or ""
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r = httpx.post(
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url=f"{self.endpoint}/v1/invoices",
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headers=self.auth_invoice,
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verify=self.auth_cert,
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json=data,
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)
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if r.is_error:
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error_message = r.text
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try:
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error_message = r.json()["error"]
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except Exception:
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pass
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return InvoiceResponse(False, None, None, error_message)
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data = r.json()
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payment_request = data["payment_request"]
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payment_hash = base64.b64decode(data["r_hash"]).hex()
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checking_id = payment_hash
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return InvoiceResponse(True, checking_id, payment_request, None)
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def pay_invoice(self, bolt11: str) -> PaymentResponse:
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r = httpx.post(
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url=f"{self.endpoint}/v1/channels/transactions",
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headers=self.auth_admin,
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verify=self.auth_cert,
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json={"payment_request": bolt11},
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)
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if r.is_error:
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error_message = r.text
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try:
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error_message = r.json()["error"]
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except:
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pass
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return PaymentResponse(False, None, 0, error_message)
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payment_hash = r.json()["payment_hash"]
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checking_id = payment_hash
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return PaymentResponse(True, checking_id, 0, None)
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def get_invoice_status(self, checking_id: str) -> PaymentStatus:
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checking_id = checking_id.replace("_", "/")
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r = httpx.get(
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url=f"{self.endpoint}/v1/invoice/{checking_id}",
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headers=self.auth_invoice,
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verify=self.auth_cert,
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)
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if not r or r.json()["settled"] == False:
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return PaymentStatus(None)
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return PaymentStatus(r.json()["settled"])
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def get_payment_status(self, checking_id: str) -> PaymentStatus:
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r = httpx.get(
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url=f"{self.endpoint}/v1/payments",
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headers=self.auth_admin,
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verify=self.auth_cert,
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params={"include_incomplete": "True", "max_payments": "20"},
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)
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if r.is_error:
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return PaymentStatus(None)
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payments = [p for p in r.json()["payments"] if p["payment_hash"] == checking_id]
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payment = payments[0] if payments else None
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# check payment.status:
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# https://api.lightning.community/rest/index.html?python#peersynctype
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statuses = {"UNKNOWN": None, "IN_FLIGHT": None, "SUCCEEDED": True, "FAILED": False}
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return PaymentStatus(statuses[payment["status"]])
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async def paid_invoices_stream(self) -> AsyncGenerator[str, None]:
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url = self.endpoint + "/v1/invoices/subscribe"
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async with httpx.AsyncClient(timeout=None, headers=self.auth_admin, verify=self.auth_cert) as client:
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async with client.stream("GET", url) as r:
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print("ok")
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print(r)
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print(r.is_error)
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print("ok")
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async for line in r.aiter_lines():
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print("line", line)
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try:
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event = json.loads(line)["result"]
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print(event)
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except:
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continue
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payment_hash = bolt11.decode(event["payment_request"]).payment_hash
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yield payment_hash
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