lnbits-legend/lnbits/wallets/fake.py

108 lines
3.3 KiB
Python

import asyncio
import hashlib
import random
from datetime import datetime
from os import getenv
from typing import AsyncGenerator, Dict, Optional
from environs import Env # type: ignore
from loguru import logger
from lnbits.helpers import urlsafe_short_hash
from ..bolt11 import decode, encode
from .base import (
InvoiceResponse,
PaymentResponse,
PaymentStatus,
StatusResponse,
Wallet,
)
env = Env()
env.read_env()
class FakeWallet(Wallet):
async def status(self) -> StatusResponse:
logger.info(
"FakeWallet funding source is for using LNbits as a centralised, stand-alone payment system with brrrrrr."
)
return StatusResponse(None, 1000000000)
async def create_invoice(
self,
amount: int,
memo: Optional[str] = None,
description_hash: Optional[bytes] = None,
) -> InvoiceResponse:
# we set a default secret since FakeWallet is used for internal=True invoices
# and the user might not have configured a secret yet
secret = env.str("FAKE_WALLET_SECTRET", default="ToTheMoon1")
data: Dict = {
"out": False,
"amount": amount,
"currency": "bc",
"privkey": hashlib.pbkdf2_hmac(
"sha256",
secret.encode("utf-8"),
("FakeWallet").encode("utf-8"),
2048,
32,
).hex(),
"memo": None,
"description_hash": None,
"description": "",
"fallback": None,
"expires": None,
"route": None,
}
data["amount"] = amount * 1000
data["timestamp"] = datetime.now().timestamp()
if description_hash:
data["tags_set"] = ["h"]
data["description_hash"] = description_hash.hex()
else:
data["tags_set"] = ["d"]
data["memo"] = memo
data["description"] = memo
randomHash = (
data["privkey"][:6]
+ hashlib.sha256(str(random.getrandbits(256)).encode("utf-8")).hexdigest()[
6:
]
)
data["paymenthash"] = randomHash
payment_request = encode(data)
checking_id = randomHash
return InvoiceResponse(True, checking_id, payment_request)
async def pay_invoice(self, bolt11: str, fee_limit_msat: int) -> PaymentResponse:
invoice = decode(bolt11)
# TODO: no data here?
data: Dict = {
"privkey": "missing"
}
if (
invoice.checking_id is not None
and invoice.checking_id[6:] == data["privkey"][:6]
):
return PaymentResponse(True, invoice.payment_hash, 0)
else:
return PaymentResponse(
ok=False, error_message="Only internal invoices can be used!"
)
async def get_invoice_status(self, checking_id: str) -> PaymentStatus:
return PaymentStatus(None)
async def get_payment_status(self, checking_id: str) -> PaymentStatus:
return PaymentStatus(None)
async def paid_invoices_stream(self) -> AsyncGenerator[str, None]:
self.queue: asyncio.Queue = asyncio.Queue(0)
while True:
value = await self.queue.get()
yield value