mirror of
https://github.com/lnbits/lnbits-legend.git
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319 lines
10 KiB
Python
319 lines
10 KiB
Python
from http import HTTPStatus
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from typing import Union
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import httpx
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from fastapi import Query
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from fastapi.params import Depends
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from lnurl import decode as decode_lnurl
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from loguru import logger
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from secp256k1 import PublicKey
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from starlette.exceptions import HTTPException
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from lnbits.core.crud import get_user
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from lnbits.core.services import check_transaction_status, create_invoice
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from lnbits.core.views.api import api_payment
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from lnbits.decorators import WalletTypeInfo, get_key_type, require_admin_key
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from lnbits.wallets.base import PaymentStatus
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from . import cashu_ext
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from .core.base import CashuError
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from .crud import (
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create_cashu,
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delete_cashu,
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get_cashu,
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get_cashus,
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get_lightning_invoice,
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store_lightning_invoice,
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)
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from .ledger import mint, request_mint
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from .mint import get_pubkeys
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from .models import (
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Cashu,
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CheckPayload,
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Invoice,
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MeltPayload,
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MintPayloads,
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PayLnurlWData,
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Pegs,
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SplitPayload,
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)
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########################################
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#################MINT CRUD##############
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########################################
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# todo: use /mints
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@cashu_ext.get("/api/v1/cashus", status_code=HTTPStatus.OK)
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async def api_cashus(
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all_wallets: bool = Query(False), wallet: WalletTypeInfo = Depends(get_key_type)
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):
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wallet_ids = [wallet.wallet.id]
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if all_wallets:
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wallet_ids = (await get_user(wallet.wallet.user)).wallet_ids
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return [cashu.dict() for cashu in await get_cashus(wallet_ids)]
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@cashu_ext.post("/api/v1/cashus", status_code=HTTPStatus.CREATED)
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async def api_cashu_create(data: Cashu, wallet: WalletTypeInfo = Depends(get_key_type)):
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cashu = await create_cashu(wallet_id=wallet.wallet.id, data=data)
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logger.debug(cashu)
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return cashu.dict()
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@cashu_ext.post("/api/v1/cashus/upodatekeys", status_code=HTTPStatus.CREATED)
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async def api_cashu_update_keys(
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data: Cashu, wallet: WalletTypeInfo = Depends(get_key_type)
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):
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cashu = await get_cashu(data.id)
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cashu = await create_cashu(wallet_id=wallet.wallet.id, data=data)
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logger.debug(cashu)
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return cashu.dict()
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@cashu_ext.delete("/api/v1/cashus/{cashu_id}")
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async def api_cashu_delete(
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cashu_id: str, wallet: WalletTypeInfo = Depends(require_admin_key)
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):
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cashu = await get_cashu(cashu_id)
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if not cashu:
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raise HTTPException(
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status_code=HTTPStatus.NOT_FOUND, detail="TPoS does not exist."
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)
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if cashu.wallet != wallet.wallet.id:
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raise HTTPException(status_code=HTTPStatus.FORBIDDEN, detail="Not your TPoS.")
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await delete_cashu(cashu_id)
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raise HTTPException(status_code=HTTPStatus.NO_CONTENT)
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########################################
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#################????###################
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########################################
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@cashu_ext.post("/api/v1/cashus/{cashu_id}/invoices", status_code=HTTPStatus.CREATED)
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async def api_cashu_create_invoice(
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amount: int = Query(..., ge=1), tipAmount: int = None, cashu_id: str = None
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):
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cashu = await get_cashu(cashu_id)
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if not cashu:
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raise HTTPException(
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status_code=HTTPStatus.NOT_FOUND, detail="TPoS does not exist."
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)
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if tipAmount:
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amount += tipAmount
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try:
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payment_hash, payment_request = await create_invoice(
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wallet_id=cashu.wallet,
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amount=amount,
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memo=f"{cashu.name}",
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extra={"tag": "cashu", "tipAmount": tipAmount, "cashuId": cashu_id},
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)
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except Exception as e:
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raise HTTPException(status_code=HTTPStatus.INTERNAL_SERVER_ERROR, detail=str(e))
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return {"payment_hash": payment_hash, "payment_request": payment_request}
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@cashu_ext.post(
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"/api/v1/cashus/{cashu_id}/invoices/{payment_request}/pay",
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status_code=HTTPStatus.OK,
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)
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async def api_cashu_pay_invoice(
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lnurl_data: PayLnurlWData, payment_request: str = None, cashu_id: str = None
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):
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cashu = await get_cashu(cashu_id)
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if not cashu:
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raise HTTPException(
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status_code=HTTPStatus.NOT_FOUND, detail="TPoS does not exist."
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)
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lnurl = (
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lnurl_data.lnurl.replace("lnurlw://", "")
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.replace("lightning://", "")
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.replace("LIGHTNING://", "")
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.replace("lightning:", "")
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.replace("LIGHTNING:", "")
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)
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if lnurl.lower().startswith("lnurl"):
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lnurl = decode_lnurl(lnurl)
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else:
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lnurl = "https://" + lnurl
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async with httpx.AsyncClient() as client:
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try:
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r = await client.get(lnurl, follow_redirects=True)
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if r.is_error:
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lnurl_response = {"success": False, "detail": "Error loading"}
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else:
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resp = r.json()
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if resp["tag"] != "withdrawRequest":
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lnurl_response = {"success": False, "detail": "Wrong tag type"}
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else:
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r2 = await client.get(
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resp["callback"],
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follow_redirects=True,
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params={
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"k1": resp["k1"],
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"pr": payment_request,
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},
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)
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resp2 = r2.json()
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if r2.is_error:
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lnurl_response = {
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"success": False,
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"detail": "Error loading callback",
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}
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elif resp2["status"] == "ERROR":
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lnurl_response = {"success": False, "detail": resp2["reason"]}
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else:
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lnurl_response = {"success": True, "detail": resp2}
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except (httpx.ConnectError, httpx.RequestError):
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lnurl_response = {"success": False, "detail": "Unexpected error occurred"}
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return lnurl_response
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@cashu_ext.get(
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"/api/v1/cashus/{cashu_id}/invoices/{payment_hash}", status_code=HTTPStatus.OK
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)
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async def api_cashu_check_invoice(cashu_id: str, payment_hash: str):
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cashu = await get_cashu(cashu_id)
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if not cashu:
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raise HTTPException(
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status_code=HTTPStatus.NOT_FOUND, detail="TPoS does not exist."
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)
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try:
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status = await api_payment(payment_hash)
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except Exception as exc:
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logger.error(exc)
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return {"paid": False}
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return status
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########################################
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#################MINT###################
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########################################
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@cashu_ext.get("/api/v1/mint/keys/{cashu_id}", status_code=HTTPStatus.OK)
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async def keys(
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cashu_id: str = Query(False), wallet: WalletTypeInfo = Depends(get_key_type)
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):
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"""Get the public keys of the mint"""
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mint = await get_cashu(cashu_id)
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if mint is None:
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raise HTTPException(
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status_code=HTTPStatus.NOT_FOUND, detail="Mint does not exist."
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)
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return get_pubkeys(mint.prvkey)
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@cashu_ext.get("/api/v1/mint/{cashu_id}")
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async def mint_pay_request(amount: int = 0, cashu_id: str = Query(None)):
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"""Request minting of tokens. Server responds with a Lightning invoice."""
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cashu = await get_cashu(cashu_id)
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if cashu is None:
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raise HTTPException(
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status_code=HTTPStatus.NOT_FOUND, detail="Mint does not exist."
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)
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try:
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payment_hash, payment_request = await create_invoice(
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wallet_id=cashu.wallet,
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amount=amount,
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memo=f"{cashu.name}",
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extra={"tag": "cashu"},
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)
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invoice = Invoice(
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amount=amount, pr=payment_request, hash=payment_hash, issued=False
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)
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await store_lightning_invoice(cashu_id, invoice)
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except Exception as e:
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logger.error(e)
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raise HTTPException(
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status_code=HTTPStatus.INTERNAL_SERVER_ERROR, detail=str(cashu_id)
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)
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return {"pr": payment_request, "hash": payment_hash}
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@cashu_ext.post("/mint")
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async def mint_coins(
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payloads: MintPayloads,
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payment_hash: Union[str, None] = None,
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cashu_id: str = Query(None),
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):
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"""
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Requests the minting of tokens belonging to a paid payment request.
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Call this endpoint after `GET /mint`.
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"""
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print("############################ amount")
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cashu: Cashu = await get_cashu(cashu_id)
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if cashu is None:
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raise HTTPException(
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status_code=HTTPStatus.NOT_FOUND, detail="Mint does not exist."
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)
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invoice: Invoice = get_lightning_invoice(cashu_id, payment_hash)
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if invoice is None:
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raise HTTPException(
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status_code=HTTPStatus.NOT_FOUND, detail="Mint does not have this invoice."
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)
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status: PaymentStatus = check_transaction_status(cashu.wallet, payment_hash)
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if status.paid == False:
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raise HTTPException(
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status_code=HTTPStatus.PAYMENT_REQUIRED, detail="Invoice not paid."
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)
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# amounts = []
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# B_s = []
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# for payload in payloads.blinded_messages:
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# amounts.append(payload.amount)
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# B_s.append(PublicKey(bytes.fromhex(payload.B_), raw=True))
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# try:
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# promises = await ledger.mint(B_s, amounts, payment_hash=payment_hash)
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# return promises
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# except Exception as exc:
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# return CashuError(error=str(exc))
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@cashu_ext.post("/melt")
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async def melt_coins(payload: MeltPayload, cashu_id: str = Query(None)):
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ok, preimage = await melt(payload.proofs, payload.amount, payload.invoice, cashu_id)
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return {"paid": ok, "preimage": preimage}
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@cashu_ext.post("/check")
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async def check_spendable_coins(payload: CheckPayload, cashu_id: str = Query(None)):
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return await check_spendable(payload.proofs, cashu_id)
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@cashu_ext.post("/split")
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async def spli_coinst(payload: SplitPayload, cashu_id: str = Query(None)):
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"""
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Requetst a set of tokens with amount "total" to be split into two
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newly minted sets with amount "split" and "total-split".
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"""
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proofs = payload.proofs
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amount = payload.amount
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output_data = payload.output_data.blinded_messages
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try:
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split_return = await split(proofs, amount, output_data)
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except Exception as exc:
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return {"error": str(exc)}
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if not split_return:
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"""There was a problem with the split"""
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raise Exception("could not split tokens.")
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fst_promises, snd_promises = split_return
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return {"fst": fst_promises, "snd": snd_promises}
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