"""Test doubles for what the services ask of the network (B-76 and after)."""

from app.electrum.client import ElectrumRpcError


def rpc_error(message: str, code: int = -26) -> ElectrumRpcError:
    """A server that answered with a JSON-RPC `error` object — an explicit refusal."""
    return ElectrumRpcError({"code": code, "message": message})


class FakeNetwork:
    """The ElectrumListener surface a broadcast needs: `known` is what
    `transaction_known` answers (True: some server has it, False: every server denies
    it, None: too few answers to tell); fanned-out transactions are recorded."""

    def __init__(self, known: bool | None = False):
        self.known = known
        self.asked: list[str] = []
        self.fanned_out: list[str] = []

    async def transaction_known(self, txid: str) -> bool | None:
        self.asked.append(txid)
        return self.known

    def fan_out_transaction(self, raw_tx_hex: str) -> None:
        self.fanned_out.append(raw_tx_hex)