generate-credentials.js

/**
 * Copyright 2018 Google LLC
 *
 * 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
 *
 * https://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
 *
 */

'use strict';

/**
 * Generate credentials to run tests
 *
 * Expected usage: node generate-credentials.js /path/to/credentials.json
 */

if (process.argv.length <= 2) {
    console.error('Please include the credentials downloaded from the Google Cloud Console');
    console.error('Then run `node generate-credentials.js /path/to/credentials.json`');
    process.exit(1);
}

const args = process.argv.slice(2);
// First parameter should be file path to client secret
const clientSecretPath = args[0];

// Read file data
const fs = require('fs');
const https = require('https');
const readline = require('readline');
const { OAuth2Client } = require('google-auth-library');

// Options for both reading and writing
const fileOptions = {
    encoding: 'utf8'
}

fs.readFile(clientSecretPath, fileOptions, (err, data) => {
    const clientSecretFile = JSON.parse(data);
    const clientId = clientSecretFile.installed.client_id;
    const clientSecret = clientSecretFile.installed.client_secret;

    const oauth2Client = new OAuth2Client(
        clientId,
        clientSecret,
        'urn:ietf:wg:oauth:2.0:oob'
    );
    const scopes = [
        'https://www.googleapis.com/auth/assistant-sdk-prototype'
    ];

    console.log(`Reading data for project "${clientSecretFile.installed.project_id}"`);

    console.log('Please go to the following link to authorize, then copy the code below');
    // Google OAuth URL to enable the Assistant SDK API for the given client id

    const url = oauth2Client.generateAuthUrl({
        // 'online' (default) or 'offline' (gets refresh_token)
        access_type: 'offline',

        // If you only need one scope you can pass it as a string
        scope: scopes
    });

    console.log(url);

    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout
    });

    rl.question('Authorization code: ', (code) => {
        // Use this code to obtain a refresh token
        oauth2Client.getToken(code, (err, tokens) => {
            const refreshToken = tokens.refresh_token;
            // Create test-credentials.json
            const fileData = {
                client_id: clientId,
                client_secret: clientSecret,
                refresh_token: refreshToken,
                type: 'authorized_user'
            }
            const filename = 'test-credentials.json';
            fs.writeFile(filename, JSON.stringify(fileData), fileOptions, err => {
                if (err) {
                    console.error(`Unable to save "${filename}"`, err);
                } else {
                    console.log(`Saved user credentials in "${filename}"`);
                    console.log('You are now ready to run tests');
                    console.log('Make sure you DO NOT commit this file');
                }
            });
            rl.close();
        });
    });
});