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85 lines
2.6 KiB
85 lines
2.6 KiB
3 years ago
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use crate::bitcoin::{ExpiredTimelocks, Txid, Wallet};
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use crate::database::{Database, Swap};
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use crate::protocol::alice::AliceState;
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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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pub enum Finality {
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Await,
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NotAwait,
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}
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impl Finality {
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pub fn from_bool(do_not_await_finality: bool) -> Self {
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if do_not_await_finality {
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Self::NotAwait
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} else {
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Self::Await
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}
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}
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}
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pub async fn redeem(
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swap_id: Uuid,
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bitcoin_wallet: Arc<Wallet>,
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db: Arc<Database>,
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force: bool,
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finality: Finality,
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) -> Result<(Txid, AliceState)> {
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let state = db.get_state(swap_id)?.try_into_alice()?.into();
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match state {
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AliceState::EncSigLearned {
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state3,
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encrypted_signature,
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..
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} => {
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tracing::info!(%swap_id, "Trying to redeem swap");
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if !force {
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tracing::debug!(%swap_id, "Checking if timelocks have expired");
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let expired_timelocks = state3.expired_timelocks(bitcoin_wallet.as_ref()).await?;
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match expired_timelocks {
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ExpiredTimelocks::None => (),
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_ => bail!("{:?} timelock already expired, consider using refund or punish. You can use --force to publish the redeem transaction, but be aware that it is not safe to do so anymore!", expired_timelocks)
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}
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}
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let redeem_tx = state3.signed_redeem_transaction(*encrypted_signature)?;
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let (txid, subscription) = bitcoin_wallet.broadcast(redeem_tx, "redeem").await?;
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if let Finality::Await = finality {
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subscription.wait_until_final().await?;
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}
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let state = AliceState::BtcRedeemed;
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let db_state = (&state).into();
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db.insert_latest_state(swap_id, Swap::Alice(db_state))
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.await?;
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Ok((txid, state))
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}
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AliceState::Started { .. }
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| AliceState::BtcLocked { .. }
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| AliceState::XmrLockTransactionSent { .. }
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| AliceState::XmrLocked { .. }
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| AliceState::XmrLockTransferProofSent { .. }
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| AliceState::CancelTimelockExpired { .. }
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| AliceState::BtcCancelled { .. }
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| AliceState::BtcRefunded { .. }
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| AliceState::BtcPunishable { .. }
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| AliceState::BtcRedeemed
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| AliceState::XmrRefunded
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| AliceState::BtcPunished
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| AliceState::SafelyAborted => bail!(
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"Cannot redeem swap {} because it is in state {} which cannot be manually redeemed",
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swap_id,
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state
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),
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}
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}
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