forked from google-wallet/web-codelab
-
Notifications
You must be signed in to change notification settings - Fork 0
/
app.js
72 lines (62 loc) · 2.48 KB
/
app.js
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
/*
* Copyright 2022 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const express = require('express');
const path = require('path');
const bodyParser = require('body-parser');
const { GoogleAuth } = require('google-auth-library');
const jwt = require('jsonwebtoken');
const serviceAccountFile = './key.json';
async function createPassAndToken(req, res) {
const credentials = require(serviceAccountFile);
const httpClient = new GoogleAuth({
credentials: credentials,
scopes: 'https://www.googleapis.com/auth/wallet_object.issuer'
});
const objectUrl = 'https://walletobjects.googleapis.com/walletobjects/v1/genericObject/';
const objectPayload = require('./generic-pass.json');
objectPayload.id = `${req.body.walletIssuerId}.${req.body.email.replace(/[^\w.-]/g, '_')}-${req.body.walletClassId}`;
objectPayload.classId = `${req.body.walletIssuerId}.${req.body.walletClassId}`;
let objectResponse;
try {
objectResponse = await httpClient.request({url: objectUrl + objectPayload.id, method: 'GET'});
console.log('existing object', objectPayload.id);
} catch (err) {
if (err.response && err.response.status === 404) {
objectResponse = await httpClient.request({url: objectUrl, method: 'POST', data: objectPayload});
console.log('new object', objectPayload.id);
} else {
console.error(err);
throw err;
}
}
const claims = {
iss: credentials.client_email, // `client_email` in service account file.
aud: 'google',
origins: ['http://localhost:3000'],
typ: 'savetowallet',
payload: {
genericObjects: [{id: objectPayload.id}],
},
};
const token = jwt.sign(claims, credentials.private_key, {algorithm: 'RS256'});
const saveUrl = `https://pay.google.com/gp/v/save/${token}`;
res.send(`<a href="${saveUrl}"><img src="wallet-button.png"></a>`);
}
const app = express();
app.use(bodyParser.urlencoded({extended: true}));
app.use(express.static('public'));
app.post('/', createPassAndToken);
app.listen(3000);