52 lines
No EOL
2.1 KiB
JavaScript
52 lines
No EOL
2.1 KiB
JavaScript
const qs = require('querystring')
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const axios = require('axios')
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const _ = require('lodash/fp')
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const { fetchRBF } = require('../../wallet/bitcoind/bitcoind')
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module.exports = { authorize }
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function highConfidence (confidence, txref) {
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if (txref.double_spend) return 0
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if (txref.rbf) return 0
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if (txref.confirmations > 0 || txref.confidence * 100 >= confidence) return txref.value
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return 0
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}
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function authorize (account, toAddress, cryptoAtoms, cryptoCode, isBitcoindAvailable) {
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var promise = []
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return Promise.resolve()
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.then(() => {
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if (cryptoCode !== 'BTC') throw new Error('Unsupported crypto: ' + cryptoCode)
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const query = qs.stringify({
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token: account.token,
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includeConfidence: true
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})
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const confidence = account.confidenceFactor
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const verifyRBF = account.rbf
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const url = `https://api.blockcypher.com/v1/btc/main/addrs/${toAddress}?${query}`
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return axios.get(url)
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.then(r => {
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const data = r.data
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if (isBitcoindAvailable && verifyRBF && data.unconfirmed_txrefs) {
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_.map(unconfirmedTxref => {
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promise.push(new Promise((resolve, reject) => { resolve(fetchRBF(unconfirmedTxref.tx_hash)) }))
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}, data.unconfirmed_txrefs)
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return Promise.all(promise)
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.then(values => {
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_.map(rbfInfo => {
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_.map(unconfirmedTxref => {
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if (rbfInfo.tx_hash === unconfirmedTxref.tx_hash) unconfirmedTxref.rbf = rbfInfo['bip125-replaceable']
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}, data.unconfirmed_txrefs)
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}, values)
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const sumTxRefs = txrefs => _.sumBy(txref => highConfidence(confidence, txref), txrefs)
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const authorizedValue = sumTxRefs(data.txrefs) + sumTxRefs(data.unconfirmed_txrefs)
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return cryptoAtoms.lte(authorizedValue)
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})
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} else {
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const sumTxRefs = txrefs => _.sumBy(txref => highConfidence(confidence, txref), txrefs)
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const authorizedValue = sumTxRefs(data.txrefs) + sumTxRefs(data.unconfirmed_txrefs)
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return cryptoAtoms.lte(authorizedValue)
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}
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})
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})
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} |