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55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
import hashlib
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from datetime import datetime, timedelta
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from typing import List, Optional
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from ..core import bolt11 as bolt11
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from ..core.base import HTLCWitness, Proof
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from ..core.db import Database
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from ..core.htlc import (
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HTLCSecret,
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)
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from ..core.secret import SecretKind, Tags
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from .protocols import SupportsDb
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class WalletHTLC(SupportsDb):
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db: Database
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async def create_htlc_lock(
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self,
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*,
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preimage: Optional[str] = None,
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preimage_hash: Optional[str] = None,
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hashlock_pubkey: Optional[str] = None,
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locktime_seconds: Optional[int] = None,
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locktime_pubkey: Optional[str] = None,
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) -> HTLCSecret:
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tags = Tags()
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if locktime_seconds:
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tags["locktime"] = str(
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int((datetime.now() + timedelta(seconds=locktime_seconds)).timestamp())
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)
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if locktime_pubkey:
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tags["refund"] = locktime_pubkey
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if not preimage_hash and preimage:
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preimage_hash = hashlib.sha256(bytes.fromhex(preimage)).hexdigest()
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assert preimage_hash, "preimage_hash or preimage must be provided"
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if hashlock_pubkey:
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tags["pubkeys"] = hashlock_pubkey
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return HTLCSecret(
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kind=SecretKind.HTLC,
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data=preimage_hash,
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tags=tags,
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)
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async def add_htlc_preimage_to_proofs(
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self, proofs: List[Proof], preimage: str
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) -> List[Proof]:
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for p in proofs:
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p.witness = HTLCWitness(preimage=preimage).json()
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return proofs
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