127 lines
3.4 KiB
JavaScript
127 lines
3.4 KiB
JavaScript
import { authenticatedLndGrpc, createInvoice } from 'ln-service'
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import { msatsToSats, satsToMsats } from '@/lib/format'
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import { datePivot } from '@/lib/time'
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import { createWithdrawal, sendToLnAddr } from '@/api/resolvers/wallet'
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export async function autoWithdraw ({ data: { id }, models, lnd }) {
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const user = await models.user.findUnique({ where: { id } })
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if (user.autoWithdrawThreshold === null || user.autoWithdrawMaxFeePercent === null) return
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const threshold = satsToMsats(user.autoWithdrawThreshold)
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const excess = Number(user.msats - threshold)
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// excess must be greater than 10% of threshold
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if (excess < Number(threshold) * 0.1) return
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const maxFee = msatsToSats(Math.ceil(excess * (user.autoWithdrawMaxFeePercent / 100.0)))
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const amount = msatsToSats(excess) - maxFee
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// must be >= 1 sat
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if (amount < 1) return
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// check that
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// 1. the user doesn't have an autowithdraw pending
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// 2. we have not already attempted to autowithdraw this fee recently
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const [pendingOrFailed] = await models.$queryRaw`
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SELECT EXISTS(
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SELECT *
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FROM "Withdrawl"
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WHERE "userId" = ${id} AND "autoWithdraw"
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AND (status IS NULL
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OR (
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status <> 'CONFIRMED' AND
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now() < created_at + interval '1 hour' AND
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"msatsFeePaying" >= ${satsToMsats(maxFee)}
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))
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)`
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if (pendingOrFailed.exists) return
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// get the wallets in order of priority
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const wallets = await models.wallet.findMany({
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where: { userId: user.id },
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orderBy: { priority: 'desc' }
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})
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for (const wallet of wallets) {
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try {
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if (wallet.type === 'LND') {
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await autowithdrawLND(
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{ amount, maxFee },
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{ models, me: user, lnd })
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} else if (wallet.type === 'LIGHTNING_ADDRESS') {
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await autowithdrawLNAddr(
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{ amount, maxFee },
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{ models, me: user, lnd })
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}
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return
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} catch (error) {
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console.error(error)
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}
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}
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// none of the wallets worked
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}
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async function autowithdrawLNAddr (
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{ amount, maxFee },
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{ me, models, lnd, headers, autoWithdraw = false }) {
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if (!me) {
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throw new Error('me not specified')
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}
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const wallet = await models.wallet.findFirst({
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where: {
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userId: me.id,
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type: 'LIGHTNING_ADDRESS'
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},
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include: {
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walletLightningAddress: true
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}
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})
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if (!wallet || !wallet.walletLightningAddress) {
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throw new Error('no lightning address wallet found')
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}
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const { walletLightningAddress: { address } } = wallet
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return await sendToLnAddr(null, { addr: address, amount, maxFee }, { me, models, lnd, autoWithdraw: true })
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}
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async function autowithdrawLND ({ amount, maxFee }, { me, models, lnd }) {
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if (!me) {
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throw new Error('me not specified')
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}
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const wallet = await models.wallet.findFirst({
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where: {
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userId: me.id,
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type: 'LND'
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},
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include: {
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walletLND: true
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}
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})
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if (!wallet || !wallet.walletLND) {
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throw new Error('no lightning address wallet found')
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}
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const { walletLND: { cert, macaroon, socket } } = wallet
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const { lnd: lndOut } = await authenticatedLndGrpc({
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cert,
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macaroon,
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socket
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})
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const invoice = await createInvoice({
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description: me.hideInvoiceDesc ? undefined : 'autowithdraw to LND from SN',
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lnd: lndOut,
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tokens: amount,
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expires_at: datePivot(new Date(), { seconds: 360 })
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})
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return await createWithdrawal(null, { invoice: invoice.request, maxFee }, { me, models, lnd, autoWithdraw: true })
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}
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