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btcOperator v1.1.4

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- CONSTANTS, get_fee_rate and some other useful fns are added to util
- getUTXOs can now be called directly using btcOperator.getUTXOs
This commit is contained in:
sairajzero 2023-07-31 02:18:43 +05:30
parent 098a62047c
commit 2c656d40ba
1 changed files with 28 additions and 4 deletions
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32
btcOperator.js
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@ -1,4 +1,4 @@
(function (EXPORTS) { //btcOperator v1.1.3b
(function (EXPORTS) { //btcOperator v1.1.4
/* BTC Crypto and API Operator */
const btcOperator = EXPORTS;
@ -44,6 +44,7 @@
}).catch(error => reject(error))
})
}
util.get_fee_rate = get_fee_rate;
const broadcastTx = btcOperator.broadcastTx = rawTxHex => new Promise((resolve, reject) => {
let url = 'https://coinb.in/api/?uid=1&key=12345678901234567890123456789012&setmodule=bitcoin&request=sendrawtransaction';
@ -282,6 +283,14 @@
BECH32_MULTISIG_OUTPUT_SIZE = 34,
SEGWIT_OUTPUT_SIZE = 23;
btcOperator.CONSTANTS = {
DUST_AMT, MIN_FEE_UPDATE, SATOSHI_IN_BTC,
BASE_TX_SIZE, BASE_INPUT_SIZE, LEGACY_INPUT_SIZE, BECH32_INPUT_SIZE,
BECH32_MULTISIG_INPUT_SIZE, SEGWIT_INPUT_SIZE, MULTISIG_INPUT_SIZE_ES,
BASE_OUTPUT_SIZE, LEGACY_OUTPUT_SIZE, BECH32_OUTPUT_SIZE,
BECH32_MULTISIG_OUTPUT_SIZE, SEGWIT_OUTPUT_SIZE
};
function _redeemScript(addr, key) {
let decode = coinjs.addressDecode(addr);
switch (decode.type) {
@ -317,6 +326,7 @@
return null;
}
}
util.sizePerInput = _sizePerInput;
function _sizePerOutput(addr) {
switch (coinjs.addressDecode(addr).type) {
@ -332,6 +342,7 @@
return null;
}
}
util.sizePerOutput = _sizePerOutput;
function validateTxParameters(parameters) {
let invalids = [];
@ -442,6 +453,20 @@
})
}
const getUTXOs = btcOperator.getUTXOs = addr => new Promise((resolve, reject) => {
fetch_api(`unspent?active=${addr}`).then(result => {
let utxos = result.unspent_outputs;
resolve(utxos.map(u => ({
txid: u.tx_hash_big_endian,
vout: u.tx_output_n,
n: u.tx_output_n,
value: u.value,
value_hex: u.value_hex,
script: u.script
})))
}).catch(error => reject(error))
})
function addUTXOs(tx, senders, redeemScripts, required_amount, fee_rate, rec_args = {}) {
return new Promise((resolve, reject) => {
required_amount = parseFloat(required_amount.toFixed(8));
@ -462,8 +487,7 @@
rs = redeemScripts[rec_args.n];
let addr_type = coinjs.addressDecode(addr).type;
let size_per_input = _sizePerInput(addr, rs);
fetch_api(`unspent?active=${addr}`).then(result => {
let utxos = result.unspent_outputs;
getUTXOs(addr).then(utxos => {
//console.debug("add-utxo", addr, rs, required_amount, utxos);
for (let i = 0; i < utxos.length && required_amount > 0; i++) {
if (!utxos[i].confirmations) //ignore unconfirmed utxo
@ -480,7 +504,7 @@
script = Crypto.util.bytesToHex(s.buffer);
} else //redeemScript for multisig (segwit)
script = rs;
tx.addinput(utxos[i].tx_hash_big_endian, utxos[i].tx_output_n, script, 0xfffffffd /*sequence*/); //0xfffffffd for Replace-by-fee
tx.addinput(utxos[i].txid, utxos[i].vout, script, 0xfffffffd /*sequence*/); //0xfffffffd for Replace-by-fee
//update track values
rec_args.input_size += size_per_input;
rec_args.input_amount += util.Sat_to_BTC(utxos[i].value);