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