Merge pull request #600 from threshold-network/allow-revealing-multip…

…le-deposits

Add a possibility to reveal multiple transactions

Add a possibility to reveal multiple transactions send to the same BTC deposit
address. In such case the user should use `/tBTC/mint/continue` url to initiate
the minting of each subsequent transaction after he revealed the first one.

src/store/tbtc/effects.ts

@@ -78,20 +78,34 @@ export const findUtxoEffect = async (
  continue
  }
 
- // UTXOs returned from `findAllUnspentTransactionOutputs` are in
- // reversed order so we have to get the last element of the `utxos`
- // array to get the oldest utxo related to this deposit address.
- const utxo = utxos.pop()!
-
- // Check if deposit is revealed.
- const deposit = await forkApi.pause(
- listenerApi.extra.threshold.tbtc.getRevealedDeposit(utxo)
- )
+ let utxo = utxos[0]
+ let areAllDepositRevealed = true
+
+ // We have to find the first UTXO that is not revealed. The UTXOs
+ // returned from `findAllUnspentTransactionOutputs` are in reversed
+ // order so we have to start our search from the last element of the
+ // `utxos` so that we search them in the order they were done. We go
+ // through all of them up to the first one to find the oldest UTXO that
+ // is not revealed.
+ // If all deposits are revealed then we just use the first UTXO (which
+ // should be the most recent transaction).
+ for (let i = utxos.length - 1; i >= 0; i--) {
+ // Check if deposit is revealed.
+ const deposit = await forkApi.pause(
+ listenerApi.extra.threshold.tbtc.getRevealedDeposit(utxos[i])
+ )
+ const isDepositRevealed = deposit.revealedAt !== 0
 
- const isDepositRevealed = deposit.revealedAt !== 0
+ if (!isDepositRevealed) {
+ utxo = utxos[i]
+ areAllDepositRevealed = false
+ break
+ }
+ }
 
- if (isDepositRevealed) {
- // Deposit already revealed, force start from step 1 and remove deposit data.
+ if (areAllDepositRevealed) {
+ // All deposits are already revealed. Force start from step 1 and
+ // remove deposit data.
  removeDataForAccount(
  depositor,
  JSON.parse(