from typing import Optional, AsyncGenerator

from .base import StatusResponse, InvoiceResponse, PaymentResponse, PaymentStatus, Wallet, Unsupported


class VoidWallet(Wallet):
    def create_invoice(
        self, amount: int, memo: Optional[str] = None, description_hash: Optional[bytes] = None
    ) -> InvoiceResponse:
        raise Unsupported("")

    def status(self) -> StatusResponse:
        return StatusResponse(
            "This backend does nothing, it is here just as a placeholder, you must configure an actual backend before being able to do anything useful with LNbits.",
            0,
        )

    def pay_invoice(self, bolt11: str) -> PaymentResponse:
        raise Unsupported("")

    def get_invoice_status(self, checking_id: str) -> PaymentStatus:
        raise Unsupported("")

    def get_payment_status(self, checking_id: str) -> PaymentStatus:
        raise Unsupported("")

    async def paid_invoices_stream(self) -> AsyncGenerator[str, None]:
        yield ""