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const buildTx = require("../../lib/buildliquidtx");
liquidTx = async ({ address, asset, amount, feeRate, replaceable, user }) => {
let tx, fee;
let node = lq;
if (user.account.pubkey) {
let psbt = await buildTx({
address,
asset,
amount,
feeRate,
replaceable,
user
});
return psbt;
}
let invoice = await db.Invoice.findOne({
where: { address },
include: {
attributes: ["username"],
model: db.User,
as: "user"
}
});
if (invoice) {
let { ismine } = await node.getAddressInfo(address);
if (ismine) {
emit(user.username, "to", invoice.user);
return;
}
}
if (config.liquid.walletpass)
await node.walletPassphrase(config.liquid.walletpass, 300);
amount = parseInt(amount);
let params = {
subtractFeeFromOutputs: amount === user.balance ? [0] : []
};
let value = (amount / SATS).toFixed(8);
if (feeRate) params.feeRate = (feeRate / SATS).toFixed(8);
let info = await node.getAddressInfo(address);
tx = await node.createRawTransaction(
[],
[{
[address]: (amount / SATS).toFixed(8),
asset
}],
0,
replaceable,
);
l.info("funding tx for fee estimate", tx);
tx = await node.fundRawTransaction(tx, params);
let blinded = await node.blindRawTransaction(tx.hex);
let signed = await node.signRawTransactionWithWallet(blinded);
decoded = await node.decodeRawTransaction(signed.hex);
feeRate = Math.round((tx.fee * SATS * 1000) / decoded.vsize);
l.info("estimated", asset, feeRate);
return { feeRate, tx };
};
module.exports = ah(async (req, res) => {
try {
let tx = await liquidTx({ ...req.body, user: req.user })
res.send(tx);
} catch (e) {
l.error("error estimating liquid fee", e.message, e.stack);
return res.status(500).send(e.message);
}
});
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