@xlink-network/xlink-sdk/lib/chunk-4P3N75GA.mjs

XLINK js SDK

import {
  decodeHex
} from "./chunk-UZKY7HXV.mjs";
import {
  isNotNull
} from "./chunk-E5Y3FGR6.mjs";
import {
  isSameUTXO,
  sumUTXO
} from "./chunk-VA3HOX5B.mjs";
import {
  MAX_BIGINT,
  sum
} from "./chunk-YV2TZGS6.mjs";
import {
  hasAny,
  sortBy
} from "./chunk-PRLWYSC3.mjs";

// src/bitcoinUtils/selectUTXOs.ts
var reselectSpendableUTXOsFactory = (availableUTXOs, getUTXOSpendable) => {
  return async (satsToSend, pinnedUTXOs, _lastTimeSelectedUTXOs) => {
    const lastTimeSelectedUTXOs = await Promise.all(
      _lastTimeSelectedUTXOs.map(getUTXOSpendable)
    ).then((utxos) => utxos.filter(isNotNull));
    const otherAvailableUTXOs = await Promise.all(
      availableUTXOs.filter(
        (availableUTXO) => !lastTimeSelectedUTXOs.find(
          (selectedUTXO) => isSameUTXO(availableUTXO, selectedUTXO)
        )
      ).map(getUTXOSpendable)
    ).then((utxos) => utxos.filter(isNotNull));
    return selectUTXOs(satsToSend, lastTimeSelectedUTXOs, otherAvailableUTXOs);
  };
};
var reselectSpendableUTXOsWithSafePadFactory = (availableUTXOs, getUTXOSpendable) => {
  const reselect = reselectSpendableUTXOsFactory(
    availableUTXOs,
    getUTXOSpendable
  );
  return async (satsToSend, pinnedUTXOs, lastTimeSelectedUTXOs) => {
    const utxos = await reselect(satsToSend, pinnedUTXOs, lastTimeSelectedUTXOs);
    const selectedAmount = sumUTXO(utxos);
    const difference = satsToSend - selectedAmount;
    if (difference > 0n) {
      return utxos.concat({
        addressType: "p2pkh",
        txId: "0000000000000000000000000000000000000000000000000000000000000000",
        index: 0,
        amount: MAX_BIGINT,
        /**
         * OutScript.encode({
         *   type: 'pkh',
         *   hash: hash160(secp256k1.getPublicKey(
         *     hex.decode('0000000000000000000000000000000000000000000000000000000000000001'),
         *     false,
         *   ))
         * })
         */
        scriptPubKey: decodeHex(
          "76a91491b24bf9f5288532960ac687abb035127b1d28a588ac"
        ),
        isPublicKeyCompressed: false
      });
    }
    return utxos;
  };
};
function selectUTXOs(satsToSend, selectedUTXOs, otherAvailableUTXOs) {
  const inputs = [];
  let sumValue = 0n;
  otherAvailableUTXOs = otherAvailableUTXOs.slice();
  if (hasAny(selectedUTXOs)) {
    inputs.push(...selectedUTXOs);
    sumValue = sum([sumValue, ...selectedUTXOs.map((o) => o.amount)]);
  }
  otherAvailableUTXOs = sortBy(
    [(o) => -o.amount, (o) => o.blockHeight],
    otherAvailableUTXOs
  );
  for (const utxo of otherAvailableUTXOs) {
    inputs.push(utxo);
    sumValue = sumValue + utxo.amount;
    if (sumValue >= satsToSend) {
      break;
    }
  }
  return inputs;
}

export {
  reselectSpendableUTXOsFactory,
  reselectSpendableUTXOsWithSafePadFactory,
  selectUTXOs
};
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