stacker.news/api/resolvers/wallet.js

405 lines
13 KiB
JavaScript

import { createHodlInvoice, createInvoice, decodePaymentRequest, payViaPaymentRequest, cancelHodlInvoice } from 'ln-service'
import { GraphQLError } from 'graphql'
import crypto from 'crypto'
import serialize from './serial'
import { decodeCursor, LIMIT, nextCursorEncoded } from '../../lib/cursor'
import lnpr from 'bolt11'
import { SELECT } from './item'
import { lnurlPayDescriptionHash } from '../../lib/lnurl'
import { msatsToSats, msatsToSatsDecimal } from '../../lib/format'
import { amountSchema, lnAddrSchema, ssValidate, withdrawlSchema } from '../../lib/validate'
import { ANON_BALANCE_LIMIT_MSATS, ANON_INV_PENDING_LIMIT, ANON_USER_ID, BALANCE_LIMIT_MSATS, INV_PENDING_LIMIT } from '../../lib/constants'
import { datePivot } from '../../lib/time'
export async function getInvoice (parent, { id }, { me, models, lnd }) {
const inv = await models.invoice.findUnique({
where: {
id: Number(id)
},
include: {
user: true
}
})
if (!inv) {
throw new GraphQLError('invoice not found', { extensions: { code: 'BAD_INPUT' } })
}
if (inv.user.id === ANON_USER_ID) {
return inv
}
if (!me) {
throw new GraphQLError('you must be logged in', { extensions: { code: 'FORBIDDEN' } })
}
if (inv.user.id !== me.id) {
throw new GraphQLError('not ur invoice', { extensions: { code: 'FORBIDDEN' } })
}
try {
inv.nostr = JSON.parse(inv.desc)
} catch (err) {
}
return inv
}
export function createHmac (hash) {
const key = Buffer.from(process.env.INVOICE_HMAC_KEY, 'hex')
return crypto.createHmac('sha256', key).update(Buffer.from(hash, 'hex')).digest('hex')
}
export default {
Query: {
invoice: getInvoice,
withdrawl: async (parent, { id }, { me, models, lnd }) => {
if (!me) {
throw new GraphQLError('you must be logged in', { extensions: { code: 'FORBIDDEN' } })
}
const wdrwl = await models.withdrawl.findUnique({
where: {
id: Number(id)
},
include: {
user: true
}
})
if (wdrwl.user.id !== me.id) {
throw new GraphQLError('not ur withdrawal', { extensions: { code: 'FORBIDDEN' } })
}
return wdrwl
},
connectAddress: async (parent, args, { lnd }) => {
return process.env.LND_CONNECT_ADDRESS
},
walletHistory: async (parent, { cursor, inc }, { me, models, lnd }) => {
const decodedCursor = decodeCursor(cursor)
if (!me) {
throw new GraphQLError('you must be logged in', { extensions: { code: 'FORBIDDEN' } })
}
const include = new Set(inc?.split(','))
const queries = []
if (include.has('invoice')) {
queries.push(
`(SELECT ('invoice' || id) as id, id as "factId", bolt11, created_at as "createdAt",
COALESCE("msatsReceived", "msatsRequested") as msats, NULL as "msatsFee",
CASE WHEN "confirmedAt" IS NOT NULL THEN 'CONFIRMED'
WHEN "expiresAt" <= $2 THEN 'EXPIRED'
WHEN cancelled THEN 'CANCELLED'
ELSE 'PENDING' END as status,
'invoice' as type
FROM "Invoice"
WHERE "userId" = $1
AND created_at <= $2)`)
}
if (include.has('withdrawal')) {
queries.push(
`(SELECT ('withdrawal' || id) as id, id as "factId", bolt11, created_at as "createdAt",
CASE WHEN status = 'CONFIRMED' THEN "msatsPaid"
ELSE "msatsPaying" END as msats,
CASE WHEN status = 'CONFIRMED' THEN "msatsFeePaid"
ELSE "msatsFeePaying" END as "msatsFee",
COALESCE(status::text, 'PENDING') as status,
'withdrawal' as type
FROM "Withdrawl"
WHERE "userId" = $1
AND created_at <= $2)`)
}
if (include.has('stacked')) {
// query1 - get all sats stacked as OP or as a forward
queries.push(
`(SELECT
('stacked' || "Item".id) AS id,
"Item".id AS "factId",
NULL AS bolt11,
MAX("ItemAct".created_at) AS "createdAt",
FLOOR(
SUM("ItemAct".msats)
* (CASE WHEN "Item"."userId" = $1 THEN
COALESCE(1 - ((SELECT SUM(pct) FROM "ItemForward" WHERE "itemId" = "Item".id) / 100.0), 1)
ELSE
(SELECT pct FROM "ItemForward" WHERE "itemId" = "Item".id AND "userId" = $1) / 100.0
END)
) AS "msats",
0 AS "msatsFee",
NULL AS status,
'stacked' AS type
FROM "ItemAct"
JOIN "Item" ON "ItemAct"."itemId" = "Item".id
-- only join to with item forward for items where we aren't the OP
LEFT JOIN "ItemForward" ON "ItemForward"."itemId" = "Item".id AND "Item"."userId" <> $1
WHERE "ItemAct".act = 'TIP'
AND ("Item"."userId" = $1 OR "ItemForward"."userId" = $1)
AND "ItemAct".created_at <= $2
GROUP BY "Item".id)`
)
queries.push(
`(SELECT ('earn' || min("Earn".id)) as id, min("Earn".id) as "factId", NULL as bolt11,
created_at as "createdAt", sum(msats),
0 as "msatsFee", NULL as status, 'earn' as type
FROM "Earn"
WHERE "Earn"."userId" = $1 AND "Earn".created_at <= $2
GROUP BY "userId", created_at)`)
queries.push(
`(SELECT ('referral' || "ReferralAct".id) as id, "ReferralAct".id as "factId", NULL as bolt11,
created_at as "createdAt", msats,
0 as "msatsFee", NULL as status, 'referral' as type
FROM "ReferralAct"
WHERE "ReferralAct"."referrerId" = $1 AND "ReferralAct".created_at <= $2)`)
}
if (include.has('spent')) {
queries.push(
`(SELECT ('spent' || "Item".id) as id, "Item".id as "factId", NULL as bolt11,
MAX("ItemAct".created_at) as "createdAt", sum("ItemAct".msats) as msats,
0 as "msatsFee", NULL as status, 'spent' as type
FROM "ItemAct"
JOIN "Item" on "ItemAct"."itemId" = "Item".id
WHERE "ItemAct"."userId" = $1
AND "ItemAct".created_at <= $2
GROUP BY "Item".id)`)
queries.push(
`(SELECT ('donation' || "Donation".id) as id, "Donation".id as "factId", NULL as bolt11,
created_at as "createdAt", sats * 1000 as msats,
0 as "msatsFee", NULL as status, 'donation' as type
FROM "Donation"
WHERE "userId" = $1
AND created_at <= $2)`)
}
if (queries.length === 0) {
return {
cursor: null,
facts: []
}
}
let history = await models.$queryRawUnsafe(`
${queries.join(' UNION ALL ')}
ORDER BY "createdAt" DESC
OFFSET $3
LIMIT ${LIMIT}`, me.id, decodedCursor.time, decodedCursor.offset)
history = history.map(f => {
if (f.bolt11) {
const inv = lnpr.decode(f.bolt11)
if (inv) {
const { tags } = inv
for (const tag of tags) {
if (tag.tagName === 'description') {
f.description = tag.data
break
}
}
}
}
switch (f.type) {
case 'withdrawal':
f.msats = (-1 * Number(f.msats)) - Number(f.msatsFee)
break
case 'spent':
f.msats *= -1
break
case 'donation':
f.msats *= -1
break
default:
break
}
return f
})
return {
cursor: history.length === LIMIT ? nextCursorEncoded(decodedCursor) : null,
facts: history
}
}
},
Mutation: {
createInvoice: async (parent, { amount, hodlInvoice = false, expireSecs = 3600 }, { me, models, lnd }) => {
await ssValidate(amountSchema, { amount })
let expirePivot = { seconds: expireSecs }
let invLimit = INV_PENDING_LIMIT
let balanceLimit = BALANCE_LIMIT_MSATS
let id = me?.id
if (!me) {
expirePivot = { seconds: Math.min(expireSecs, 180) }
invLimit = ANON_INV_PENDING_LIMIT
balanceLimit = ANON_BALANCE_LIMIT_MSATS
id = ANON_USER_ID
}
const user = await models.user.findUnique({ where: { id } })
const expiresAt = datePivot(new Date(), expirePivot)
const description = `Funding @${user.name} on stacker.news`
try {
const invoice = await (hodlInvoice ? createHodlInvoice : createInvoice)({
description: user.hideInvoiceDesc ? undefined : description,
lnd,
tokens: amount,
expires_at: expiresAt
})
const [inv] = await serialize(models,
models.$queryRaw`SELECT * FROM create_invoice(${invoice.id}, ${invoice.request},
${expiresAt}::timestamp, ${amount * 1000}, ${user.id}::INTEGER, ${description},
${invLimit}::INTEGER, ${balanceLimit})`)
if (hodlInvoice) await models.invoice.update({ where: { hash: invoice.id }, data: { preimage: invoice.secret } })
// the HMAC is only returned during invoice creation
// this makes sure that only the person who created this invoice
// has access to the HMAC
const hmac = createHmac(inv.hash)
return { ...inv, hmac }
} catch (error) {
console.log(error)
throw error
}
},
createWithdrawl: createWithdrawal,
sendToLnAddr: async (parent, { addr, amount, maxFee }, { me, models, lnd }) => {
await ssValidate(lnAddrSchema, { addr, amount, maxFee })
const [name, domain] = addr.split('@')
let req
try {
req = await fetch(`https://${domain}/.well-known/lnurlp/${name}`)
} catch (e) {
throw new Error(`error initiating protocol with https://${domain}`)
}
const res1 = await req.json()
if (res1.status === 'ERROR') {
throw new Error(res1.reason)
}
const milliamount = amount * 1000
// check that amount is within min and max sendable
if (milliamount < res1.minSendable || milliamount > res1.maxSendable) {
throw new GraphQLError(`amount must be >= ${res1.minSendable / 1000} and <= ${res1.maxSendable / 1000}`, { extensions: { code: 'BAD_INPUT' } })
}
const callback = new URL(res1.callback)
callback.searchParams.append('amount', milliamount)
// call callback with amount
const res2 = await (await fetch(callback.toString())).json()
if (res2.status === 'ERROR') {
throw new Error(res2.reason)
}
// decode invoice
let decoded
try {
decoded = await decodePaymentRequest({ lnd, request: res2.pr })
} catch (error) {
console.log(error)
throw new Error('could not decode invoice')
}
if (decoded.description_hash !== lnurlPayDescriptionHash(res1.metadata)) {
throw new Error('description hash does not match')
}
// take pr and createWithdrawl
return await createWithdrawal(parent, { invoice: res2.pr, maxFee }, { me, models, lnd })
},
cancelInvoice: async (parent, { hash, hmac }, { models, lnd }) => {
const hmac2 = createHmac(hash)
if (hmac !== hmac2) {
throw new GraphQLError('bad hmac', { extensions: { code: 'FORBIDDEN' } })
}
await cancelHodlInvoice({ id: hash, lnd })
const inv = await serialize(models,
models.invoice.update({
where: {
hash
},
data: {
cancelled: true
}
}))
return inv
}
},
Withdrawl: {
satsPaying: w => msatsToSats(w.msatsPaying),
satsPaid: w => msatsToSats(w.msatsPaid),
satsFeePaying: w => msatsToSats(w.msatsFeePaying),
satsFeePaid: w => msatsToSats(w.msatsFeePaid)
},
Invoice: {
satsReceived: i => msatsToSats(i.msatsReceived),
satsRequested: i => msatsToSats(i.msatsRequested)
},
Fact: {
item: async (fact, args, { models }) => {
if (fact.type !== 'spent' && fact.type !== 'stacked') {
return null
}
const [item] = await models.$queryRawUnsafe(`
${SELECT}
FROM "Item"
WHERE id = $1`, Number(fact.factId))
return item
},
sats: fact => msatsToSatsDecimal(fact.msats),
satsFee: fact => msatsToSatsDecimal(fact.msatsFee)
}
}
async function createWithdrawal (parent, { invoice, maxFee }, { me, models, lnd }) {
await ssValidate(withdrawlSchema, { invoice, maxFee })
// remove 'lightning:' prefix if present
invoice = invoice.replace(/^lightning:/, '')
// decode invoice to get amount
let decoded
try {
decoded = await decodePaymentRequest({ lnd, request: invoice })
} catch (error) {
console.log(error)
throw new GraphQLError('could not decode invoice', { extensions: { code: 'BAD_INPUT' } })
}
if (!decoded.mtokens || BigInt(decoded.mtokens) <= 0) {
throw new GraphQLError('your invoice must specify an amount', { extensions: { code: 'BAD_INPUT' } })
}
const msatsFee = Number(maxFee) * 1000
const user = await models.user.findUnique({ where: { id: me.id } })
// create withdrawl transactionally (id, bolt11, amount, fee)
const [withdrawl] = await serialize(models,
models.$queryRaw`SELECT * FROM create_withdrawl(${decoded.id}, ${invoice},
${Number(decoded.mtokens)}, ${msatsFee}, ${user.name})`)
payViaPaymentRequest({
lnd,
request: invoice,
// can't use max_fee_mtokens https://github.com/alexbosworth/ln-service/issues/141
max_fee: Number(maxFee),
pathfinding_timeout: 30000
})
return withdrawl
}