UNPKG

send-crypto

Version:

A minimal JavaScript library / wallet for sending crypto assets

167 lines 19.8 kB
"use strict"; var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) { if (k2 === undefined) k2 = k; var desc = Object.getOwnPropertyDescriptor(m, k); if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) { desc = { enumerable: true, get: function() { return m[k]; } }; } Object.defineProperty(o, k2, desc); }) : (function(o, m, k, k2) { if (k2 === undefined) k2 = k; o[k2] = m[k]; })); var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) { Object.defineProperty(o, "default", { enumerable: true, value: v }); }) : function(o, v) { o["default"] = v; }); var __importStar = (this && this.__importStar) || function (mod) { if (mod && mod.__esModule) return mod; var result = {}; if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k); __setModuleDefault(result, mod); return result; }; var __importDefault = (this && this.__importDefault) || function (mod) { return (mod && mod.__esModule) ? mod : { "default": mod }; }; var _a; Object.defineProperty(exports, "__esModule", { value: true }); exports.ZECHandler = exports._apiFallbacks = void 0; const bignumber_js_1 = __importDefault(require("bignumber.js")); const bitcoin = __importStar(require("bitgo-utxo-lib")); const immutable_1 = require("immutable"); const insight_1 = require("../../common/apis/insight"); const jsonrpc_1 = require("../../common/apis/jsonrpc"); const sochain_1 = require("../../common/apis/sochain"); const bitgoUtxoLib_1 = require("../../common/libraries/bitgoUtxoLib"); const confirmations_1 = require("../../lib/confirmations"); const promiEvent_1 = require("../../lib/promiEvent"); const retry_1 = require("../../lib/retry"); const utils_1 = require("../../lib/utils"); var InsightEndpoints; (function (InsightEndpoints) { // Testnet InsightEndpoints["TestnetZCash"] = "https://explorer.testnet.z.cash/api/"; // Mainnet InsightEndpoints["ZCash"] = "https://explorer.z.cash/api/"; InsightEndpoints["ZecBlockExplorer"] = "https://zecblockexplorer.com/api/"; InsightEndpoints["ZecChain"] = "https://zechain.net/api/v1/"; InsightEndpoints["BlockExplorer"] = "https://zcash.blockexplorer.com/api/"; })(InsightEndpoints || (InsightEndpoints = {})); exports._apiFallbacks = { fetchUTXO: (testnet, txHash, vOut) => testnet ? [ ...(0, utils_1.shuffleArray)(() => insight_1.Insight.fetchUTXO(InsightEndpoints.TestnetZCash)(txHash, vOut)), () => sochain_1.Sochain.fetchUTXO("ZECTEST")(txHash, vOut), ] : [ ...(0, utils_1.shuffleArray)(() => insight_1.Insight.fetchUTXO(InsightEndpoints.ZCash)(txHash, vOut), () => insight_1.Insight.fetchUTXO(InsightEndpoints.ZecBlockExplorer)(txHash, vOut)), () => insight_1.Insight.fetchUTXO(InsightEndpoints.ZecChain)(txHash, vOut), () => insight_1.Insight.fetchUTXO(InsightEndpoints.BlockExplorer)(txHash, vOut), ], fetchUTXOs: (testnet, address, confirmations) => testnet ? [ ...(0, utils_1.shuffleArray)(() => insight_1.Insight.fetchUTXOs(InsightEndpoints.TestnetZCash)(address, confirmations)), () => sochain_1.Sochain.fetchUTXOs("ZECTEST")(address, confirmations), ] : [ ...(0, utils_1.shuffleArray)(() => insight_1.Insight.fetchUTXOs(InsightEndpoints.ZCash)(address, confirmations), () => insight_1.Insight.fetchUTXOs(InsightEndpoints.ZecBlockExplorer)(address, confirmations)), () => sochain_1.Sochain.fetchUTXOs("ZEC")(address, confirmations), () => insight_1.Insight.fetchUTXOs(InsightEndpoints.ZecChain)(address, confirmations), () => insight_1.Insight.fetchUTXOs(InsightEndpoints.BlockExplorer)(address, confirmations), ], fetchTXs: (testnet, address, confirmations = 0) => testnet ? [ ...(0, utils_1.shuffleArray)(() => insight_1.Insight.fetchTXs(InsightEndpoints.TestnetZCash)(address, confirmations)), () => sochain_1.Sochain.fetchTXs("ZECTEST")(address, confirmations), ] : [ ...(0, utils_1.shuffleArray)(() => insight_1.Insight.fetchTXs(InsightEndpoints.ZCash)(address, confirmations), () => insight_1.Insight.fetchTXs(InsightEndpoints.ZecBlockExplorer)(address, confirmations)), () => sochain_1.Sochain.fetchTXs("ZEC")(address, confirmations), () => insight_1.Insight.fetchTXs(InsightEndpoints.ZecChain)(address, confirmations), () => insight_1.Insight.fetchTXs(InsightEndpoints.BlockExplorer)(address, confirmations), ], broadcastTransaction: (testnet, hex) => testnet ? [ () => jsonrpc_1.JSONRPC.broadcastTransaction(jsonrpc_1.MULTICHAIN_URLS.ZECTEST)(hex), () => insight_1.Insight.broadcastTransaction(InsightEndpoints.TestnetZCash)(hex), () => sochain_1.Sochain.broadcastTransaction("ZECTEST")(hex), ] : [ ...(0, utils_1.shuffleArray)(() => insight_1.Insight.broadcastTransaction(InsightEndpoints.ZCash)(hex), () => insight_1.Insight.broadcastTransaction(InsightEndpoints.ZecBlockExplorer)(hex), () => sochain_1.Sochain.broadcastTransaction("ZEC")(hex)), () => insight_1.Insight.broadcastTransaction(InsightEndpoints.ZecChain)(hex), () => insight_1.Insight.broadcastTransaction(InsightEndpoints.BlockExplorer)(hex), () => jsonrpc_1.JSONRPC.broadcastTransaction(jsonrpc_1.MULTICHAIN_URLS.ZEC)(hex), ], }; class ZECHandler { constructor(privateKey, network) { this.decimals = 8; // Returns whether or not this can handle the asset this.handlesAsset = (asset) => typeof asset === "string" && ["ZEC", "ZCASH"].indexOf(asset.toUpperCase()) !== -1; this.address = async (asset, options) => this.privateKey.getAddress(); // Balance this.getBalance = async (asset, options) => (await this.getBalanceInSats(asset, options)).dividedBy(new bignumber_js_1.default(10).exponentiatedBy(this.decimals)); this.getBalanceInSats = async (asset, options) => { const utxos = await ZECHandler.getUTXOs(this.testnet, Object.assign(Object.assign({}, options), { address: (options && options.address) || (await this.address(asset)) })); return utxos.reduce((sum, utxo) => sum.plus(utxo.amount), new bignumber_js_1.default(0)); }; // Transfer this.send = (to, value, asset, options) => this.sendSats(to, value.times(new bignumber_js_1.default(10).exponentiatedBy(this.decimals)), asset, options); this.sendSats = (to, valueIn, asset, options) => { const promiEvent = (0, promiEvent_1.newPromiEvent)(); let txHash; let errored; (async () => { const fromAddress = await this.address(asset); const changeAddress = fromAddress; const utxos = (0, immutable_1.List)(await ZECHandler.getUTXOs(this.testnet, Object.assign(Object.assign({}, options), { address: fromAddress }))) .sortBy((utxo) => utxo.amount) .reverse() .toArray(); if (this.testnet) { // tslint:disable-next-line: no-object-mutation bitcoin.networks.zcashTest.consensusBranchId["4"] = 37519621; } const built = await bitgoUtxoLib_1.BitgoUTXOLib.buildUTXO(this.testnet ? bitcoin.networks.zcashTest : bitcoin.networks.zcash, this.privateKey, changeAddress, to, valueIn, utxos, Object.assign(Object.assign({}, options), { version: 4, versionGroupID: 0x892f2085, consensusBranchId: 0x37519621 })); txHash = await (0, retry_1.retryNTimes)(() => (0, retry_1.fallback)(exports._apiFallbacks.broadcastTransaction(this.testnet, built.toHex())), 3); promiEvent.emit("transactionHash", txHash); promiEvent.resolve(txHash); })().catch((error) => { errored = true; promiEvent.reject(error); }); (0, confirmations_1.subscribeToConfirmations)(promiEvent, () => errored, async () => (txHash ? this._getConfirmations(txHash) : 0)); return promiEvent; }; this._getConfirmations = async (txHash) => (await (0, retry_1.fallback)( // Fetch confirmations for first output of transaction. exports._apiFallbacks.fetchUTXO(this.testnet, txHash, 0))).confirmations; this.testnet = network !== "mainnet"; this.privateKey = bitgoUtxoLib_1.BitgoUTXOLib.loadPrivateKey(this.testnet ? bitcoin.networks.zcashTest : bitcoin.networks.zcash, privateKey); } } exports.ZECHandler = ZECHandler; _a = ZECHandler; ZECHandler.getUTXOs = async (testnet, options) => { const confirmations = options && options.confirmations !== undefined ? options.confirmations : 0; return (0, retry_1.fallback)(exports._apiFallbacks.fetchUTXOs(testnet, options.address, confirmations)); }; ZECHandler.getUTXO = async (testnet, txHash, vOut) => { const endpoints = exports._apiFallbacks.fetchUTXO(testnet, txHash, vOut); return (0, retry_1.fallback)(endpoints); }; ZECHandler.getTransactions = async (testnet, options) => { const confirmations = options && options.confirmations !== undefined ? options.confirmations : 0; const endpoints = exports._apiFallbacks.fetchTXs(testnet, options.address, confirmations); return (0, retry_1.fallback)(endpoints); }; //# 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