chore: use monorepo organization

packages/server/lib/plugins/wallet/zcashd/zcashd.js

@@ -0,0 +1,167 @@
+const _ = require('lodash/fp')
+const pRetry = require('p-retry') 
+const jsonRpc = require('../../common/json-rpc')
+
+const { utils: coinUtils } = require('@lamassu/coins')
+
+const BN = require('../../../bn')
+const E = require('../../../error')
+
+const cryptoRec = coinUtils.getCryptoCurrency('ZEC')
+const unitScale = cryptoRec.unitScale
+
+const rpcConfig = jsonRpc.rpcConfig(cryptoRec)
+
+function fetch (method, params) {
+  return jsonRpc.fetch(rpcConfig, method, params)
+}
+
+function errorHandle (e) {
+  const err = JSON.parse(e.message)
+  switch (err.code) {
+    case -6:
+      throw new E.InsufficientFundsError()
+    default:
+      throw e
+  }
+}
+
+function checkCryptoCode (cryptoCode) {
+  if (cryptoCode !== 'ZEC') return Promise.reject(new Error('Unsupported crypto: ' + cryptoCode))
+  return Promise.resolve()
+}
+
+function accountBalance (cryptoCode) {
+  return checkCryptoCode(cryptoCode)
+    .then(() => fetch('getwalletinfo'))
+    .then(({ balance }) => new BN(balance).shiftedBy(unitScale).decimalPlaces(0))
+}
+
+function accountUnconfirmedBalance (cryptoCode) {
+  return checkCryptoCode(cryptoCode)
+    .then(() => fetch('getwalletinfo'))
+    .then(({ unconfirmed_balance: balance }) => new BN(balance).shiftedBy(unitScale).decimalPlaces(0))
+}
+
+// We want a balance that includes all spends (0 conf) but only deposits that
+// have at least 1 confirmation. getbalance does this for us automatically.
+function balance (account, cryptoCode, settings, operatorId) {
+  return accountBalance(cryptoCode)
+}
+
+function sendCoins (account, tx, settings, operatorId) {
+  const { toAddress, cryptoAtoms, cryptoCode } = tx
+  const coins = cryptoAtoms.shiftedBy(-unitScale).toFixed(8)
+  const checkSendStatus = function (opid) {
+    return new Promise((resolve, reject) => {
+      fetch('z_getoperationstatus', [[opid]])
+        .then(res => {
+          const status = _.get('status', res[0])
+          switch (status) {
+            case 'success':
+              resolve(res[0])
+              break
+            case 'failed':
+              throw new pRetry.AbortError(res[0].error)
+            case 'executing':
+              reject(new Error('operation still executing'))
+              break
+          }
+        })
+    })
+  }
+
+  const checker = opid => pRetry(() => checkSendStatus(opid), { retries: 20, minTimeout: 300, factor: 1.05 })
+
+  return checkCryptoCode(cryptoCode)
+    .then(() => fetch('z_sendmany', ['ANY_TADDR', [{ address: toAddress, amount: coins }], null, null, 'NoPrivacy']))
+    .then(checker)
+    .then((res) => {
+      return {
+        fee: _.get('params.fee', res),
+        txid: _.get('result.txid', res)
+      }
+    })
+    .then((pickedObj) => {
+      return {
+        fee: new BN(pickedObj.fee).abs().shiftedBy(unitScale).decimalPlaces(0),
+        txid: pickedObj.txid
+      }
+    })
+    .catch(errorHandle)
+}
+
+function newAddress (account, info, tx, settings, operatorId) {
+  return checkCryptoCode(info.cryptoCode)
+    .then(() => fetch('getnewaddress'))
+}
+
+function addressBalance (address, confs) {
+  return fetch('getreceivedbyaddress', [address, confs])
+    .then(r => new BN(r).shiftedBy(unitScale).decimalPlaces(0))
+}
+
+function confirmedBalance (address, cryptoCode) {
+  return checkCryptoCode(cryptoCode)
+    .then(() => addressBalance(address, 1))
+}
+
+function pendingBalance (address, cryptoCode) {
+  return checkCryptoCode(cryptoCode)
+    .then(() => addressBalance(address, 0))
+}
+
+function getStatus (account, tx, requested, settings, operatorId) {
+  const { toAddress, cryptoCode } = tx
+  return checkCryptoCode(cryptoCode)
+    .then(() => confirmedBalance(toAddress, cryptoCode))
+    .then(confirmed => {
+      if (confirmed.gte(requested)) return { receivedCryptoAtoms: confirmed, status: 'confirmed' }
+
+      return pendingBalance(toAddress, cryptoCode)
+        .then(pending => {
+          if (pending.gte(requested)) return { receivedCryptoAtoms: pending, status: 'authorized' }
+          if (pending.gt(0)) return { receivedCryptoAtoms: pending, status: 'insufficientFunds' }
+          return { receivedCryptoAtoms: pending, status: 'notSeen' }
+        })
+    })
+}
+
+function newFunding (account, cryptoCode, settings, operatorId) {
+  return checkCryptoCode(cryptoCode)
+    .then(() => {
+      const promises = [
+        accountUnconfirmedBalance(cryptoCode),
+        accountBalance(cryptoCode),
+        newAddress(account, { cryptoCode })
+      ]
+
+      return Promise.all(promises)
+    })
+    .then(([fundingPendingBalance, fundingConfirmedBalance, fundingAddress]) => ({
+      fundingPendingBalance,
+      fundingConfirmedBalance,
+      fundingAddress
+    }))
+}
+
+function checkBlockchainStatus (cryptoCode) {
+  return checkCryptoCode(cryptoCode)
+    .then(() => fetch('getblockchaininfo'))
+    .then(res => !!res['initial_block_download_complete'] ? 'ready' : 'syncing')
+}
+
+function getTxHashesByAddress (cryptoCode, address) {
+  checkCryptoCode(cryptoCode)
+    .then(() => fetch('getaddresstxids', [address]))
+}
+
+module.exports = {
+  balance,
+  sendCoins,
+  newAddress,
+  getStatus,
+  newFunding,
+  checkBlockchainStatus,
+  getTxHashesByAddress
+}