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const buildTx = require("../../lib/buildtx");
module.exports = ah(async (req, res) => {
let { user } = req;
let { address, amount, feeRate, replaceable } = req.body;
let tx, fee;
if (user.account.pubkey) {
try {
let psbt = await buildTx({ address, amount, feeRate, replaceable, user });
return res.send(psbt);
} catch(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 bc.getAddressInfo(address);
if (ismine) {
emit(user.username, "to", invoice.user);
return res.end();
}
}
try {
amount = parseInt(amount);
let partial = await bc.createRawTransaction([], {
[address]: (amount / SATS).toFixed(8),
}, 0, replaceable);
let params = {
subtractFeeFromOutputs: amount === user.balance ? [0] : [],
replaceable,
};
if (feeRate) params.feeRate = (feeRate / SATS).toFixed(8);
tx = await bc.fundRawTransaction(partial, params);
if (config.bitcoin.walletpass)
await bc.walletPassphrase(config.bitcoin.walletpass, 300);
let signed = await bc.signRawTransactionWithWallet(tx.hex);
decoded = await bc.decodeRawTransaction(signed.hex);
feeRate = Math.round((tx.fee * SATS * 1000) / decoded.vsize);
res.send({ feeRate, tx });
} catch (e) {
l.error("bitcoin fee estimation error", e);
return res.status(500).send(e.message);
}
});
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