1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/*
This file is part of GNU Taler
(C) 2022 Taler Systems S.A.
GNU 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.
GNU 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
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Client for the Taler (demo-)bank.
*/
/**
* Imports.
*/
import {
AmountString,
buildCodecForObject,
Codec,
codecForString,
encodeCrock,
getRandomBytes,
} from "@gnu-taler/taler-util";
import {
HttpRequestLibrary,
readSuccessResponseJsonOrErrorCode,
readSuccessResponseJsonOrThrow,
} from "./index.browser.js";
export enum CreditDebitIndicator {
Credit = "credit",
Debit = "debit",
}
export interface BankAccountBalanceResponse {
balance: {
amount: AmountString;
credit_debit_indicator: CreditDebitIndicator;
};
}
export interface BankServiceHandle {
readonly baseUrl: string;
readonly http: HttpRequestLibrary;
}
export interface BankUser {
username: string;
password: string;
accountPaytoUri: string;
}
export interface WithdrawalOperationInfo {
withdrawal_id: string;
taler_withdraw_uri: string;
}
/**
* FIXME: Rename, this is not part of the integration test harness anymore.
*/
export interface HarnessExchangeBankAccount {
accountName: string;
accountPassword: string;
accountPaytoUri: string;
wireGatewayApiBaseUrl: string;
}
/**
* Helper function to generate the "Authorization" HTTP header.
*/
function makeBasicAuthHeader(username: string, password: string): string {
const auth = `${username}:${password}`;
const authEncoded: string = Buffer.from(auth).toString("base64");
return `Basic ${authEncoded}`;
}
const codecForWithdrawalOperationInfo = (): Codec<WithdrawalOperationInfo> =>
buildCodecForObject<WithdrawalOperationInfo>()
.property("withdrawal_id", codecForString())
.property("taler_withdraw_uri", codecForString())
.build("WithdrawalOperationInfo");
export namespace BankApi {
export async function registerAccount(
bank: BankServiceHandle,
username: string,
password: string,
): Promise<BankUser> {
const url = new URL("testing/register", bank.baseUrl);
const resp = await bank.http.postJson(url.href, { username, password });
let paytoUri = `payto://x-taler-bank/localhost/${username}`;
if (resp.status !== 200 && resp.status !== 202) {
throw new Error();
}
try {
const respJson = await resp.json();
// LibEuFin demobank returns payto URI in response
if (respJson.paytoUri) {
paytoUri = respJson.paytoUri;
}
} catch (e) {}
return {
password,
username,
accountPaytoUri: paytoUri,
};
}
export async function createRandomBankUser(
bank: BankServiceHandle,
): Promise<BankUser> {
const username = "user-" + encodeCrock(getRandomBytes(10)).toLowerCase();
const password = "pw-" + encodeCrock(getRandomBytes(10)).toLowerCase();
return await registerAccount(bank, username, password);
}
export async function adminAddIncoming(
bank: BankServiceHandle,
params: {
exchangeBankAccount: HarnessExchangeBankAccount;
amount: string;
reservePub: string;
debitAccountPayto: string;
},
) {
let maybeBaseUrl = bank.baseUrl;
let url = new URL(
`taler-wire-gateway/${params.exchangeBankAccount.accountName}/admin/add-incoming`,
maybeBaseUrl,
);
await bank.http.postJson(
url.href,
{
amount: params.amount,
reserve_pub: params.reservePub,
debit_account: params.debitAccountPayto,
},
{
headers: {
Authorization: makeBasicAuthHeader(
params.exchangeBankAccount.accountName,
params.exchangeBankAccount.accountPassword,
),
},
},
);
}
export async function confirmWithdrawalOperation(
bank: BankServiceHandle,
bankUser: BankUser,
wopi: WithdrawalOperationInfo,
): Promise<void> {
const url = new URL(
`accounts/${bankUser.username}/withdrawals/${wopi.withdrawal_id}/confirm`,
bank.baseUrl,
);
await bank.http.postJson(
url.href,
{},
{
headers: {
Authorization: makeBasicAuthHeader(
bankUser.username,
bankUser.password,
),
},
},
);
}
export async function abortWithdrawalOperation(
bank: BankServiceHandle,
bankUser: BankUser,
wopi: WithdrawalOperationInfo,
): Promise<void> {
const url = new URL(
`accounts/${bankUser.username}/withdrawals/${wopi.withdrawal_id}/abort`,
bank.baseUrl,
);
await bank.http.postJson(
url.href,
{},
{
headers: {
Authorization: makeBasicAuthHeader(
bankUser.username,
bankUser.password,
),
},
},
);
}
}
export namespace BankAccessApi {
export async function getAccountBalance(
bank: BankServiceHandle,
bankUser: BankUser,
): Promise<BankAccountBalanceResponse> {
const url = new URL(`accounts/${bankUser.username}`, bank.baseUrl);
const resp = await bank.http.get(url.href, {
headers: {
Authorization: makeBasicAuthHeader(
bankUser.username,
bankUser.password,
),
},
});
return await resp.json();
}
export async function createWithdrawalOperation(
bank: BankServiceHandle,
bankUser: BankUser,
amount: string,
): Promise<WithdrawalOperationInfo> {
const url = new URL(
`accounts/${bankUser.username}/withdrawals`,
bank.baseUrl,
);
const resp = await bank.http.postJson(
url.href,
{
amount,
},
{
headers: {
Authorization: makeBasicAuthHeader(
bankUser.username,
bankUser.password,
),
},
},
);
return readSuccessResponseJsonOrThrow(
resp,
codecForWithdrawalOperationInfo(),
);
}
}
|
