Google Calendar API - 如何使用 NodeJS REST API 插入新事件

Question

我想将数据发送到我的NodeJS后端(Express framework(，然后使用Google Calendar API在Google日历上创建一个事件。

我正在使用 POST 方法接收来自快递的数据。路由器((

目前，如果我使用邮递员发送请求，则会收到错误："联系日历服务时出错：错误：需要登录">

我的问题是如何在 post 方法主体中调用 insertEvent(( 方法并传递从用户那里收到的数据？

这篇文章中描述了类似的情况 将事件插入谷歌日历 nodejs，但数据是硬编码的。

我的完整代码是：

var express = require('express');
var router = express.Router();
const fs = require('fs');
const readline = require('readline');
const {google} = require('googleapis');
const myEvents = [];
// If modifying these scopes, delete token.json.
const SCOPES = ['https://www.googleapis.com/auth/calendar'];
// 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 Calendar API.
authorize(JSON.parse(content), listEvents);
authorize(JSON.parse(content), insertEvents);
});
/**
* 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 getAccessToken(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 getAccessToken(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 retrieving 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);
});
});
}
/**
* Lists the next 10 events on the user's primary calendar.
* @param {google.auth.OAuth2} auth An authorized OAuth2 client.
*/
function listEvents(auth) {
const calendar = google.calendar({version: 'v3', auth});
calendar.events.list({
calendarId: 'primary',
timeMin: (new Date()).toISOString(),
maxResults: 10,
singleEvents: true,
orderBy: 'startTime',
}, (err, res) => {
if (err) return console.log('The API returned an error: ' + err);
const events = res.data.items;
if (events.length) {
myEvents.push(events);
} else {
console.log('No upcoming events found.');
}
});
}

function insertEvents(event, auth) {
const calendar = google.calendar({ version: 'v3', auth });
var event = event;
calendar.events.insert(
{
auth: auth,
calendarId: 'primary',
resource: event
},
function(err, event) {
if (err) {
console.log(
'There was an error contacting the Calendar service: ' + err
);
return;
}
console.log('Event created: %s', event.data.htmlLink);
}
);
}

/* GET events listing. */
router.get('/', function(req, res, next) {
res.send(myEvents);
});
/* Create a new event. */
router.post('/add', function(req, res, next){
let newEvent = req.body;
insertEvents(newEvent, auth); //how to pass req.body and auth?
res.send('Ok');
});
module.exports = router;

Answer 1

首先，您需要将每个用户的refresh_token保存在数据库中，以便在将来使用时连接到Google日历

const secrets = {
client_id: process.env.CLIENT_ID,
client_secret: process.env.CLIENT_SECRET,
redirect_uris: process.env.REDIRECT_URIS,
};
const scope = ['https://www.googleapis.com/auth/calendar'];
const {
client_id,
client_secret,
redirect_uris
} = secrets;
const oAuth2Client = new google.auth.OAuth2(client_id, client_secret, redirect_uris);

在 req.body 中传递 userId 和 newEvent Object

router.post('/add', async (req, res, next)=>{
const {id,newEvent} = req.body;
//find User RefreshToken Using id from db
//something like below
const {refresh_token} = await db.user.findById(id)
oAuth2Client.setCredentials({refresh_token});
await calendar.events.insert({
calendarId:'primary',
resource: newEvent
})
res.send('Ok');
});