1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
import config from "$config";
import db from "$db";
import { emit } from "$lib/sockets";
import buildTx from "$lib/buildliquidtx";
import { err, l } from "$lib/logging";
import { SATS } from "$lib/utils";
import lq from "$lib/liquid";
export const liquidTx = async ({ address, asset, amount, feeRate, replaceable, user }) => {
let tx, fee;
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 lq.getAddressInfo(address);
if (ismine) {
emit(user.username, "to", invoice.user);
return;
}
}
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),
asset
}
],
0,
replaceable
);
l("funding tx for fee estimate", tx);
tx = await lq.fundRawTransaction(tx, params);
let blinded = await lq.blindRawTransaction(tx.hex);
let signed = await lq.signRawTransactionWithWallet(blinded);
let decoded = await lq.decodeRawTransaction(signed.hex);
feeRate = Math.round((tx.fee * SATS * 1000) / decoded.vsize);
l("estimated", asset, feeRate);
return { feeRate, tx };
};
export default async (req, res) => {
try {
let tx = await liquidTx({ ...req.body, user: req.user });
res.send(tx);
} catch (e) {
err("error estimating liquid fee", e.message, e.stack);
return res.code(500).send(e.message);
}
};
|
