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/*
This file is part of TALER
(C) 2019 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import { MemoryBackend, BridgeIDBFactory, shimIndexedDB } from "idb-bridge";
import { Wallet } from "../wallet";
import { Notifier, Badge } from "../walletTypes";
import { openTalerDb, exportDb } from "../db";
import { HttpRequestLibrary } from "../http";
import * as amounts from "../amounts";
import Axios from "axios";
import URI = require("urijs");
import querystring = require("querystring");
import { CheckPaymentResponse } from "../talerTypes";
const enableTracing = false;
class ConsoleNotifier implements Notifier {
notify(): void {
// nothing to do.
}
}
class ConsoleBadge implements Badge {
startBusy(): void {
enableTracing && console.log("NOTIFICATION: busy");
}
stopBusy(): void {
enableTracing && console.log("NOTIFICATION: busy end");
}
showNotification(): void {
enableTracing && console.log("NOTIFICATION: show");
}
clearNotification(): void {
enableTracing && console.log("NOTIFICATION: cleared");
}
}
export class NodeHttpLib implements HttpRequestLibrary {
async get(url: string): Promise<import("../http").HttpResponse> {
enableTracing && console.log("making GET request to", url);
const resp = await Axios({
method: "get",
url: url,
responseType: "json",
});
enableTracing && console.log("got response", resp.data);
enableTracing && console.log("resp type", typeof resp.data);
return {
responseJson: resp.data,
status: resp.status,
};
}
async postJson(
url: string,
body: any,
): Promise<import("../http").HttpResponse> {
enableTracing && console.log("making POST request to", url);
const resp = await Axios({
method: "post",
url: url,
responseType: "json",
data: body,
});
enableTracing && console.log("got response", resp.data);
enableTracing && console.log("resp type", typeof resp.data);
return {
responseJson: resp.data,
status: resp.status,
};
}
async postForm(
url: string,
form: any,
): Promise<import("../http").HttpResponse> {
enableTracing && console.log("making POST request to", url);
const resp = await Axios({
method: "post",
url: url,
data: querystring.stringify(form),
responseType: "json",
});
enableTracing && console.log("got response", resp.data);
enableTracing && console.log("resp type", typeof resp.data);
return {
responseJson: resp.data,
status: resp.status,
};
}
}
interface BankUser {
username: string;
password: string;
}
function makeId(length: number): string {
let result = "";
const characters =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
for (let i = 0; i < length; i++) {
result += characters.charAt(Math.floor(Math.random() * characters.length));
}
return result;
}
async function registerBankUser(
bankBaseUrl: string,
httpLib: HttpRequestLibrary,
): Promise<BankUser> {
const reqUrl = new URI("register").absoluteTo(bankBaseUrl).href();
const randId = makeId(8);
const bankUser: BankUser = {
username: `testuser-${randId}`,
password: `testpw-${randId}`,
};
const result = await httpLib.postForm(reqUrl, bankUser);
if (result.status != 200) {
throw Error("could not register bank user");
}
return bankUser;
}
async function createBankReserve(
bankBaseUrl: string,
bankUser: BankUser,
amount: string,
reservePub: string,
exchangePaytoUri: string,
httpLib: HttpRequestLibrary,
) {
const reqUrl = new URI("taler/withdraw").absoluteTo(bankBaseUrl).href();
const body = {
auth: { type: "basic" },
username: bankUser,
amount,
reserve_pub: reservePub,
exchange_wire_detail: exchangePaytoUri,
};
const resp = await Axios({
method: "post",
url: reqUrl,
data: body,
responseType: "json",
headers: {
"X-Taler-Bank-Username": bankUser.username,
"X-Taler-Bank-Password": bankUser.password,
},
});
if (resp.status != 200) {
throw Error("failed to create bank reserve");
}
}
class MerchantBackendConnection {
constructor(
public merchantBaseUrl: string,
public merchantInstance: string,
public apiKey: string,
) {}
async createOrder(
amount: string,
summary: string,
fulfillmentUrl: string,
): Promise<{ orderId: string }> {
const reqUrl = new URI("order").absoluteTo(this.merchantBaseUrl).href();
const orderReq = {
order: {
amount,
summary,
fulfillment_url: fulfillmentUrl,
instance: this.merchantInstance,
},
};
const resp = await Axios({
method: "post",
url: reqUrl,
data: orderReq,
responseType: "json",
headers: {
Authorization: `ApiKey ${this.apiKey}`,
},
});
if (resp.status != 200) {
throw Error("failed to create bank reserve");
}
const orderId = resp.data.order_id;
if (!orderId) {
throw Error("no order id in response");
}
return { orderId };
}
async checkPayment(orderId: string): Promise<CheckPaymentResponse> {
const reqUrl = new URI("check-payment")
.absoluteTo(this.merchantBaseUrl)
.href();
const resp = await Axios({
method: "get",
url: reqUrl,
params: { order_id: orderId, instance: this.merchantInstance },
responseType: "json",
headers: {
Authorization: `ApiKey ${this.apiKey}`,
},
});
if (resp.status != 200) {
throw Error("failed to check payment");
}
return CheckPaymentResponse.checked(resp.data);
}
}
export async function main() {
const myNotifier = new ConsoleNotifier();
const myBadge = new ConsoleBadge();
const myBackend = new MemoryBackend();
myBackend.enableTracing = false;
BridgeIDBFactory.enableTracing = false;
const myBridgeIdbFactory = new BridgeIDBFactory(myBackend);
const myIdbFactory: IDBFactory = (myBridgeIdbFactory as any) as IDBFactory;
const myHttpLib = new NodeHttpLib();
const myVersionChange = () => {
console.error("version change requested, should not happen");
throw Error();
};
const myUnsupportedUpgrade = () => {
console.error("unsupported database migration");
throw Error();
};
shimIndexedDB(myBridgeIdbFactory);
const exchangeBaseUrl = "https://exchange.test.taler.net/";
const bankBaseUrl = "https://bank.test.taler.net/";
const myDb = await openTalerDb(
myIdbFactory,
myVersionChange,
myUnsupportedUpgrade,
);
const myWallet = new Wallet(myDb, myHttpLib, myBadge, myNotifier);
const reserveResponse = await myWallet.createReserve({
amount: amounts.parseOrThrow("TESTKUDOS:10.0"),
exchange: exchangeBaseUrl,
});
const bankUser = await registerBankUser(bankBaseUrl, myHttpLib);
console.log("bank user", bankUser);
const exchangePaytoUri = await myWallet.getExchangePaytoUri(
"https://exchange.test.taler.net/",
["x-taler-bank"],
);
await createBankReserve(
bankBaseUrl,
bankUser,
"TESTKUDOS:10.0",
reserveResponse.reservePub,
exchangePaytoUri,
myHttpLib,
);
await myWallet.confirmReserve({ reservePub: reserveResponse.reservePub });
await myWallet.processReserve(reserveResponse.reservePub);
console.log("process reserve returned");
const balance = await myWallet.getBalances();
console.log(JSON.stringify(balance, null, 2));
const myMerchant = new MerchantBackendConnection(
"https://backend.test.taler.net/",
"default",
"sandbox",
);
const orderResp = await myMerchant.createOrder(
"TESTKUDOS:5",
"hello world",
"https://example.com/",
);
console.log("created order with orderId", orderResp.orderId);
const paymentStatus = await myMerchant.checkPayment(orderResp.orderId);
console.log("payment status", paymentStatus);
const contractUrl = paymentStatus.contract_url;
if (!contractUrl) {
throw Error("no contract URL in payment response");
}
const proposalId = await myWallet.downloadProposal(contractUrl);
console.log("proposal id", proposalId);
const checkPayResult = await myWallet.checkPay(proposalId);
console.log("check pay result", checkPayResult);
const confirmPayResult = await myWallet.confirmPay(proposalId, undefined);
console.log("confirmPayResult", confirmPayResult);
const paymentStatus2 = await myMerchant.checkPayment(orderResp.orderId);
console.log("payment status after wallet payment:", paymentStatus2);
if (!paymentStatus2.paid) {
throw Error("payment did not succeed");
}
myWallet.stop();
}
if (require.main === module) {
main().catch(err => {
console.error("Failed with exception:");
console.error(err);
});
}
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