use of r1.question when using google sheets api - node.js

Question

I am using the documentation found at https://developers.google.com/sheets/api/quickstart/nodejs in order to use the google sheets api in my node.js application. For reference, the code I'm using from the page is as below:
const fs = require('fs');
const readline = require('readline');
const {google} = require('googleapis');
// If modifying these scopes, delete token.json.
const SCOPES = ['https://www.googleapis.com/auth/spreadsheets.readonly'];
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
const TOKEN_PATH = 'token.json';
// Load client secrets from a local file.
fs.readFile('credentials.json', (err, content) => {
if (err) return console.log('Error loading client secret file:', err);
// Authorize a client with credentials, then call the Google Sheets API.
authorize(JSON.parse(content), listMajors);
});
/**
* Create an OAuth2 client with the given credentials, and then execute the
* given callback function.
* #param {Object} credentials The authorization client credentials.
* #param {function} callback The callback to call with the authorized client.
*/
function authorize(credentials, callback) {
const {client_secret, client_id, redirect_uris} = credentials.installed;
const oAuth2Client = new google.auth.OAuth2(
client_id, client_secret, redirect_uris[0]);
// Check if we have previously stored a token.
fs.readFile(TOKEN_PATH, (err, token) => {
if (err) return getNewToken(oAuth2Client, callback);
oAuth2Client.setCredentials(JSON.parse(token));
callback(oAuth2Client);
});
}
/**
* Get and store new token after prompting for user authorization, and then
* execute the given callback with the authorized OAuth2 client.
* #param {google.auth.OAuth2} oAuth2Client The OAuth2 client to get token for.
* #param {getEventsCallback} callback The callback for the authorized client.
*/
function getNewToken(oAuth2Client, callback) {
const authUrl = oAuth2Client.generateAuthUrl({
access_type: 'offline',
scope: SCOPES,
});
console.log('Authorize this app by visiting this url:', authUrl);
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
});
rl.question('Enter the code from that page here: ', (code) => {
rl.close();
oAuth2Client.getToken(code, (err, token) => {
if (err) return console.error('Error while trying to retrieve access token', err);
oAuth2Client.setCredentials(token);
// Store the token to disk for later program executions
fs.writeFile(TOKEN_PATH, JSON.stringify(token), (err) => {
if (err) return console.error(err);
console.log('Token stored to', TOKEN_PATH);
});
callback(oAuth2Client);
});
});
}
/**
* Prints the names and majors of students in a sample spreadsheet:
* #see https://docs.google.com/spreadsheets/d/1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms/edit
* #param {google.auth.OAuth2} auth The authenticated Google OAuth client.
*/
function listMajors(auth) {
const sheets = google.sheets({version: 'v4', auth});
sheets.spreadsheets.values.get({
spreadsheetId: '1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms',
range: 'Class Data!A2:E',
}, (err, res) => {
if (err) return console.log('The API returned an error: ' + err);
const rows = res.data.values;
if (rows.length) {
console.log('Name, Major:');
// Print columns A and E, which correspond to indices 0 and 4.
rows.map((row) => {
console.log(`${row[0]}, ${row[4]}`);
});
} else {
console.log('No data found.');
}
});
}
At the line where it says rl.question('Enter the code from that page here: ', (code) => { I get the feeling that I'm supposed to input something, but I never see any obvious prompt to enter any kind of code, and thus I do not enter anything and my code goes to return console.error('Error while trying to retrieve access token', err); and I apparently never get an access token. How exactly do I enter this code, and where do I get this code from?
EDIT: Detailed flow for replicating bug.
I have the following requires at the top of my code:
const fs = require('fs');
const readline = require('readline');
const {google} = require('googleapis');
Below is the route which I first access in the browser in order to initiate the process.
app.get("/test", function (req,res) {
// If modifying these scopes, delete token.json.
const SCOPES = ['https://www.googleapis.com/auth/spreadsheets.readonly'];
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
const TOKEN_PATH = 'token.json';
// Load client secrets from a local file.
fs.readFile('credentials.json', (err, content) => {
if (err) return console.log('Error loading client secret file:', err);
// Authorize a client with credentials, then call the Google Sheets API.
authorize(JSON.parse(content), listMajors);
});
/**
* Create an OAuth2 client with the given credentials, and then execute the
* given callback function.
* #param {Object} credentials The authorization client credentials.
* #param {function} callback The callback to call with the authorized client.
*/
function authorize(credentials, callback) {
//const {client_secret, client_id, redirect_uris} = credentials.installed;
var client_secret = credentials.web.client_secret;
var client_id = credentials.web.client_id;
var redirect_uris = credentials.web.redirect_uris;
const oAuth2Client = new google.auth.OAuth2(
client_id, client_secret, redirect_uris[0]);
// Check if we have previously stored a token.
fs.readFile(TOKEN_PATH, (err, token) => {
if (err) return getNewToken(oAuth2Client, callback);
oAuth2Client.setCredentials(JSON.parse(token));
callback(oAuth2Client);
});
}
/**
* Get and store new token after prompting for user authorization, and then
* execute the given callback with the authorized OAuth2 client.
* #param {google.auth.OAuth2} oAuth2Client The OAuth2 client to get token for.
* #param {getEventsCallback} callback The callback for the authorized client.
*/
function getNewToken(oAuth2Client, callback) {
const authUrl = oAuth2Client.generateAuthUrl({
access_type: 'offline',
scope: SCOPES,
});
console.log('Authorize this app by visiting this url:', authUrl);
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
});
rl.question('Enter the code from that page here: ', (code) => {
rl.close();
oAuth2Client.getToken(code, (err, token) => {
if (err) return console.error('Error while trying to retrieve access token', err);
oAuth2Client.setCredentials(token);
// Store the token to disk for later program executions
fs.writeFile(TOKEN_PATH, JSON.stringify(token), (err) => {
if (err) return console.error(err);
console.log('Token stored to', TOKEN_PATH);
});
callback(oAuth2Client);
});
});
}
/**
* Prints the names and majors of students in a sample spreadsheet:
* #see https://docs.google.com/spreadsheets/d/1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms/edit
* #param {google.auth.OAuth2} auth The authenticated Google OAuth client.
*/
function listMajors(auth) {
const sheets = google.sheets({version: 'v4', auth});
sheets.spreadsheets.values.get({
spreadsheetId: '1BxiMVs0XRA5nFMdKvBdBZjgmUUqptlbs74OgvE2upms',
range: 'Class Data!A2:E',
}, (err, res) => {
if (err) return console.log('The API returned an error: ' + err);
const rows = res.data.values;
if (rows.length) {
console.log('Name, Major:');
// Print columns A and E, which correspond to indices 0 and 4.
rows.map((row) => {
console.log(`${row[0]}, ${row[4]}`);
});
} else {
console.log('No data found.');
}
});
}
})
When I access this route, the browser tries to load to something, but never gets there. In the debug console I get a prompt saying "Authorize this app by visiting this url: ..." and I go to the given url in the browser. I am already signed into google, so I am given a list of accounts to choose from where the browser says "Choose an account to continue to quickstart." I choose my google account, and then I get the "this app isn't verified screen", so I click "Advanced" towards the bottom of the screen, after which a "Go to Quickstart (unsafe)" link appears. I click this link, and then I seemingly go back to the previous oauth screen where I was given a list of accounts, except a prompt now appears asking to Grant Quickstart permission to view your google spreadsheets. I click "Allow", and then I am redirected to a page which looks similar to the previous Oath screen, except it's asking me to confirm my choices, make sure you trust quickstart etc., so I click Allow once again and I am finally redirected to the page I specified that I would go to by my redirect url. However, in my working directory I can never see token.json, and I never see the "Enter the code from that page here: " in the terminal (I am using VSCode and the terminal is set as windows powershell). When I try to enter the code I get from the url parameters (from the redirect page at the end) I get the error I mentioned before.