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Adding splitUTXOs function

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sairajzero 2023-04-23 21:13:24 +05:30
parent fe360847e0
commit 1118f6e570
1 changed files with 65 additions and 0 deletions
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65
scripts/floBlockchainAPI.js
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@ -254,6 +254,71 @@
})
}
floBlockchainAPI.splitUTXOs = function (floID, privKey, count, floData = '') {
return new Promise((resolve, reject) => {
if (!floCrypto.validateFloID(floID, true))
return reject(`Invalid floID`);
if (!floCrypto.verifyPrivKey(privKey, floID))
return reject("Invalid Private Key");
if (!floCrypto.validateASCII(floData))
return reject("Invalid FLO_Data: only printable ASCII characters are allowed");
var fee = DEFAULT.fee;
var splitAmt = DEFAULT.sendAmt + fee;
var requiredAmt = splitAmt * count;
getBalance(floID).then(balance => {
var fee = DEFAULT.fee;
if (balance < requiredAmt + fee)
return reject("Insufficient FLO balance!");
//get unconfirmed tx list
promisedAPI(`api/addr/${floID}`).then(result => {
readTxs(floID, 0, result.unconfirmedTxApperances).then(result => {
let unconfirmedSpent = {};
for (let tx of result.items)
if (tx.confirmations == 0)
for (let vin of tx.vin)
if (vin.addr === floID) {
if (Array.isArray(unconfirmedSpent[vin.txid]))
unconfirmedSpent[vin.txid].push(vin.vout);
else
unconfirmedSpent[vin.txid] = [vin.vout];
}
//get utxos list
promisedAPI(`api/addr/${floID}/utxo`).then(utxos => {
//form/construct the transaction data
var trx = bitjs.transaction();
var utxoAmt = 0.0;
for (let i = utxos.length - 1;
(i >= 0) && (utxoAmt < requiredAmt + fee); i--) {
//use only utxos with confirmations (strict_utxo mode)
if (utxos[i].confirmations || !strict_utxo) {
if (utxos[i].txid in unconfirmedSpent && unconfirmedSpent[utxos[i].txid].includes(utxos[i].vout))
continue; //A transaction has already used the utxo, but is unconfirmed.
trx.addinput(utxos[i].txid, utxos[i].vout, utxos[i].scriptPubKey);
utxoAmt += utxos[i].amount;
};
}
if (utxoAmt < requiredAmt + fee)
reject("Insufficient FLO: Some UTXOs are unconfirmed");
else {
for (let i = 0; i < count; i++)
trx.addoutput(floID, splitAmt);
var change = utxoAmt - requiredAmt - fee;
if (change > DEFAULT.minChangeAmt)
trx.addoutput(floID, change);
trx.addflodata(floData.replace(/\n/g, ' '));
var signedTxHash = trx.sign(privKey, 1);
broadcastTx(signedTxHash)
.then(txid => resolve(txid))
.catch(error => reject(error))
}
}).catch(error => reject(error))
}).catch(error => reject(error))
}).catch(error => reject(error))
}).catch(error => reject(error))
})
}
/**Write data into blockchain from (and/or) to multiple floID
* @param {Array} senderPrivKeys List of sender private-keys
* @param {string} data FLO data of the txn