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66 lines
2.1 KiB
66 lines
2.1 KiB
use crate::bitcoin::{ExpiredTimelocks, Txid, Wallet};
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use crate::database::{Database, Swap};
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use crate::protocol::bob::BobState;
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use anyhow::{bail, Result};
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use std::sync::Arc;
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use uuid::Uuid;
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#[derive(Debug, thiserror::Error, Clone, Copy)]
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pub enum Error {
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#[error("The cancel timelock has not expired yet.")]
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CancelTimelockNotExpiredYet,
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}
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pub async fn cancel(
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swap_id: Uuid,
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bitcoin_wallet: Arc<Wallet>,
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db: Database,
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force: bool,
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) -> Result<Result<(Txid, BobState), Error>> {
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let state = db.get_state(swap_id)?.try_into_bob()?.into();
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let state6 = match state {
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BobState::BtcLocked(state3) => state3.cancel(),
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BobState::XmrLockProofReceived { state, .. } => state.cancel(),
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BobState::XmrLocked(state4) => state4.cancel(),
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BobState::EncSigSent(state4) => state4.cancel(),
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BobState::CancelTimelockExpired(state6) => state6,
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BobState::Started { .. }
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| BobState::SwapSetupCompleted(_)
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| BobState::BtcRedeemed(_)
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| BobState::BtcCancelled(_)
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| BobState::BtcRefunded(_)
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| BobState::XmrRedeemed { .. }
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| BobState::BtcPunished { .. }
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| BobState::SafelyAborted => bail!(
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"Cannot cancel swap {} because it is in state {} which is not refundable.",
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swap_id,
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state
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),
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};
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tracing::info!(%swap_id, "Manually cancelling swap");
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if !force {
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tracing::debug!(%swap_id, "Checking if cancel timelock is expired");
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if let ExpiredTimelocks::None = state6.expired_timelock(bitcoin_wallet.as_ref()).await? {
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return Ok(Err(Error::CancelTimelockNotExpiredYet));
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}
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}
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let txid = if let Ok(tx) = state6.check_for_tx_cancel(bitcoin_wallet.as_ref()).await {
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tracing::debug!(%swap_id, "Cancel transaction has already been published");
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tx.txid()
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} else {
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state6.submit_tx_cancel(bitcoin_wallet.as_ref()).await?
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};
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let state = BobState::BtcCancelled(state6);
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let db_state = state.clone().into();
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db.insert_latest_state(swap_id, Swap::Bob(db_state)).await?;
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Ok(Ok((txid, state)))
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}
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