| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | const Service_1 = require("frontblock-generic/Service");
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| 4 | const PaymentService_1 = require("./PaymentService");
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| 5 | const Types_1 = require("./Types");
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| 6 | const bsock = require('bsock');
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| 7 | const fetch = require("node-fetch");
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| 8 | const uuid = require("uuid/v4");
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| 9 | exports.CryptocompareDollarValueProvider = async (coins) => {
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| 10 | const ret = new Map();
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| 11 | const request = await fetch("https://min-api.cryptocompare.com/data/pricemultifull?fsyms=" + coins.join(",") + "&tsyms=USD");
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| 12 | const result = await request.json();
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| 13 | const values = result["RAW"];
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| 14 | Types_1.CoinList.forEach(coin => {
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| 15 | ret.set(coin, values[coin]["USD"]["PRICE"]);
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| 16 | });
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| 17 | return ret;
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| 18 | };
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| 19 | class Frontblock {
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| 20 | constructor(conf) {
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| 21 | this.subscriptionUIDs = new Map();
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| 22 | this.payments = new Map();
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| 23 | this.paymentStreams = new Map();
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| 24 | this.dollarValues = new Map();
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| 25 | this.dollarValueProvider = exports.CryptocompareDollarValueProvider;
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| 26 | this.apikey = "";
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| 27 | this.io = bsock.createServer();
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| 28 | this.conf = conf;
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| 29 | if (conf.apiKey != null)
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| 30 | this.apikey = conf.apiKey;
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| 31 | if (conf.dollarValueProvider != null)
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| 32 | this.dollarValueProvider = conf.dollarValueProvider;
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| 33 | this.socket = bsock.connect(conf.apiPort, conf.apiHost, conf.tls != null ? conf.tls : false);
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| 34 | }
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| 35 | updateSubscribers(payment) {
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| 36 | const p = this.payments.get(payment.paymentID);
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| 37 | if (p != null)
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| 38 | this.paymentStreams.forEach(sub => sub(p));
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| 39 | }
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| 40 | updateModifyDate(payment) {
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| 41 | const p = this.payments.get(payment.paymentID);
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| 42 | if (p == null)
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| 43 | return;
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| 44 | p.updatedAt = new Date();
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| 45 | this.payments.set(p.paymentID, p);
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| 46 | }
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| 47 | handlePayment(payment, transaction) {
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| 48 | const p = this.payments.get(payment.paymentID);
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| 49 | if (p == null)
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| 50 | return;
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| 51 | p.addTransaction(transaction);
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| 52 | p.received += transaction.amount;
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| 53 | if (p.currency != transaction.currency) {
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| 54 | p.status = "Other (See error field)";
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| 55 | p.error = "Currency mismatch. Expected `" + p.currency + "`" + " but got `" + transaction.currency + "`";
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| 56 | }
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| 57 | else if (p.received == p.amount)
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| 58 | p.status = "Completed";
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| 59 | else if (p.received < p.amount)
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| 60 | p.status = "Underpaid";
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| 61 | else if (p.received > p.amount)
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| 62 | p.status = "Overpaid";
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| 63 | this.payments.set(p.paymentID, p);
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| 64 | this.updateModifyDate(p);
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| 65 | this.updateSubscribers(p);
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| 66 | }
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| 67 | async updateDollarValue() {
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| 68 | this.dollarValues = await this.dollarValueProvider(Types_1.CoinList);
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| 69 | }
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| 70 | async createUsdValuePayment(currency, amount) {
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| 71 | await this.updateDollarValue();
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| 72 | const accountProvider = this.conf[currency];
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| 73 | if (accountProvider == null)
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| 74 | return new Service_1.ErrorResponse("Unable to generate account. Please specifiy an AccountProvider for `" + currency + "`");
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| 75 | const dollarValue = this.dollarValues.get(currency);
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| 76 | if (dollarValue == null)
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| 77 | return new Service_1.ErrorResponse("Unable to get dollar value of `" + currency + "`");
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| 78 | const account = accountProvider();
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| 79 | const payment = new PaymentService_1.Payment(amount, amount / dollarValue, currency, account);
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| 80 | const res = await this.subscribe(this.apikey, currency, account, (tx) => this.handlePayment(payment, tx));
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| 81 | if (res instanceof Service_1.ErrorResponse)
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| 82 | return res;
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| 83 | this.payments.set(payment.paymentID, payment);
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| 84 | this.subscriptionUIDs.set(payment.paymentID, res.uid);
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| 85 | this.updateSubscribers(payment);
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| 86 | return payment;
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| 87 | }
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| 88 | async createCryptoPayment(currency, amount) {
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| 89 | await this.updateDollarValue();
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| 90 | const accountProvider = this.conf[currency];
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| 91 | if (accountProvider == null)
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| 92 | return new Service_1.ErrorResponse("Unable to generate account. Please specifiy an AccountProvider for `" + currency + "`");
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| 93 | const dollarValue = this.dollarValues.get(currency);
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| 94 | if (dollarValue == null)
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| 95 | return new Service_1.ErrorResponse("Unable to get dollar value of " + currency);
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| 96 | const account = accountProvider();
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| 97 | const payment = new PaymentService_1.Payment(dollarValue * amount, amount, currency, account);
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| 98 | const res = await this.subscribe(this.apikey, currency, account, (tx) => this.handlePayment(payment, tx));
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| 99 | if (res instanceof Service_1.ErrorResponse)
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| 100 | return res;
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| 101 | this.subscriptionUIDs.set(payment.paymentID, res.uid);
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| 102 | this.payments.set(payment.paymentID, payment);
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| 103 | this.updateSubscribers(payment);
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| 104 | return payment;
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| 105 | }
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| 106 | async getPayment(paymentID) {
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| 107 | if (typeof paymentID != "string") {
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| 108 | if (paymentID.paymentID == null)
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| 109 | return new Service_1.ErrorResponse("Malformed paymentID");
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| 110 | paymentID = paymentID.paymentID;
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| 111 | }
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| 112 | const payment = this.payments.get(paymentID);
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| 113 | if (payment == null)
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| 114 | return new Service_1.ErrorResponse("Unknown payment");
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| 115 | return payment;
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| 116 | }
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| 117 | async cancelPayment(paymentID) {
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| 118 | if (typeof paymentID != "string") {
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| 119 | if (paymentID.paymentID == null)
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| 120 | return new Service_1.ErrorResponse("Malformed paymentID");
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| 121 | paymentID = paymentID.paymentID;
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| 122 | }
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| 123 | const payment = this.payments.get(paymentID);
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| 124 | if (payment == null)
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| 125 | return new Service_1.ErrorResponse("Unknown payment");
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| 126 | payment.status = "Canceled";
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| 127 | this.payments.set(payment.paymentID, payment);
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| 128 | this.updateModifyDate(payment);
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| 129 | this.updateSubscribers(payment);
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| 130 | return new Service_1.SuccessResponse();
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| 131 | }
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| 132 | async resolvePayment(paymentID) {
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| 133 | if (typeof paymentID != "string") {
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| 134 | if (paymentID.paymentID == null)
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| 135 | return new Service_1.ErrorResponse("Malformed paymentID");
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| 136 | paymentID = paymentID.paymentID;
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| 137 | }
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| 138 | const payment = this.payments.get(paymentID);
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| 139 | if (payment == null)
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| 140 | return new Service_1.ErrorResponse("Unknown payment");
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| 141 | payment.status = "Resolved";
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| 142 | this.payments.set(payment.paymentID, payment);
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| 143 | this.updateModifyDate(payment);
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| 144 | this.updateSubscribers(payment);
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| 145 | return new Service_1.SuccessResponse();
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| 146 | }
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| 147 | async finalizePayment(paymentID) {
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| 148 | if (typeof paymentID != "string") {
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| 149 | if (paymentID.paymentID == null)
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| 150 | return new Service_1.ErrorResponse("Malformed paymentID");
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| 151 | paymentID = paymentID.paymentID;
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| 152 | }
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| 153 | const payment = this.payments.get(paymentID);
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| 154 | if (payment == null)
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| 155 | return new Service_1.ErrorResponse("Unknown payment");
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| 156 | if (payment.status != "Completed" && payment.status != "Canceled") {
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| 157 | return new Service_1.ErrorResponse("Unable to finalize a payment with status " + payment.status);
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| 158 | }
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| 159 | payment.status = "Finalized";
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| 160 | this.updateModifyDate(payment);
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| 161 | this.updateSubscribers(payment);
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| 162 | const sub = this.subscriptionUIDs.get(payment.paymentID);
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| 163 | if (sub != null)
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| 164 | this.unsubscribe(this.apikey, sub);
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| 165 | return new Service_1.SuccessResponse();
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| 166 | }
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| 167 | async cancelStream(uid) {
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| 168 | if (typeof uid != "string") {
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| 169 | if (uid.uid == null)
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| 170 | return new Service_1.ErrorResponse("Malformed subscription identifier");
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| 171 | uid = uid.uid;
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| 172 | }
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| 173 | if (!this.paymentStreams.has(uid))
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| 174 | return new Service_1.ErrorResponse("Unknown stream");
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| 175 | this.paymentStreams.delete(uid);
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| 176 | return new Service_1.SuccessResponse();
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| 177 | }
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| 178 | async streamPayments(callback) {
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| 179 | const uid = uuid();
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| 180 | this.paymentStreams.set(uid, callback);
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| 181 | return new Service_1.SubscriptionResponse(uid);
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| 182 | }
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| 183 | async subscribe(apikey, coin, account, callback) {
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| 184 | const r = await this.socket.call(apikey, coin, account);
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| 185 | const res = Service_1.parseSubResponse(r);
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| 186 | if (res instanceof Service_1.SubscriptionResponse) {
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| 187 | this.socket.hook(res.uid, callback);
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| 188 | }
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| 189 | return res;
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| 190 | }
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| 191 | async unsubscribe(apikey, uid) {
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| 192 | const res = await this.socket.call('unsubscribe', apikey, uid);
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| 193 | return Service_1.parseResponse(res);
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| 194 | }
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| 195 | }
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| 196 | exports.Frontblock = Frontblock;
|