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calendar.js
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calendar.js
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module.exports = {
call_calendar: function(eventName, startDateTime, endDateTime, callback){
var fs = require('fs');
var readline = require('readline');
var {google} = require('googleapis');
//console.log(google);
var OAuth2 = google.auth.OAuth2;
//var googleAuth = require('google-auth-library');
// If modifying these scopes, delete your previously saved credentials
// at ~/.credentials/calendar-nodejs-quickstart.json
var SCOPES = ['https://www.googleapis.com/auth/calendar'];
var TOKEN_DIR = (process.env.HOME || process.env.HOMEPATH ||
process.env.USERPROFILE) + '/.credentials/';
var TOKEN_PATH = TOKEN_DIR + 'calendar-nodejs-quickstart.json';
// Load client secrets from a local file.
fs.readFile('client_secret.json', function processClientSecrets(err, content) {
if (err) {
console.log('Error loading client secret file: ' + err);
return;
}
// Authorize a client with the loaded credentials, then call the
// Google Calendar API.
//authorize(JSON.parse(content), listEvents);
authorize(JSON.parse(content), addEvents);
});
/**
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) {
var clientSecret = credentials.installed.client_secret;
var clientId = credentials.installed.client_id;
var redirectUrl = credentials.installed.redirect_uris[0];
var oauth2Client = new OAuth2(clientId, clientSecret, redirectUrl);
// Check if we have previously stored a token.
fs.readFile(TOKEN_PATH, function(err, token) {
if (err) {
getNewToken(oauth2Client, callback);
} else {
oauth2Client.credentials = 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 to call with the authorized
client.
*/
function getNewToken(oauth2Client, callback) {
var authUrl = oauth2Client.generateAuthUrl({
access_type: 'offline',
scope: SCOPES
});
console.log('Authorize this app by visiting this url: ', authUrl);
var rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
rl.question('Enter the code from that page here: ', function(code) {
rl.close();
oauth2Client.getToken(code, function(err, token) {
if (err) {
console.log('Error while trying to retrieve access token', err);
return;
}
oauth2Client.credentials = token;
storeToken(token);
callback(oauth2Client);
});
});
}
/**
Store token to disk be used in later program executions.
@param {Object} token The token to store to disk.
*/
function storeToken(token) {
try {
fs.mkdirSync(TOKEN_DIR);
} catch (err) {
if (err.code != 'EEXIST') {
throw err;
}
}
fs.writeFile(TOKEN_PATH, JSON.stringify(token));
console.log('Token stored to ' + TOKEN_PATH);
}
/**
Lists the next 10 events on the user's primary calendar.
@param {google.auth.OAuth2} auth An authorized OAuth2 client.
*/
function listEvents(auth) {
var calendar = google.calendar('v3');
calendar.events.list({
auth: auth,
calendarId: 'primary',
timeMin: (new Date()).toISOString(),
maxResults: 10,
singleEvents: true,
orderBy: 'startTime'
}, function(err, response) {
if (err) {
console.log('The API returned an error: ' + err);
return;
}
var events = response.data.items;
if (events.length == 0) {
console.log('No upcoming events found.');
} else {
console.log('Upcoming 10 events:');
for (var i = 0; i < events.length; i++) {
var event = events[i];
if (!event.start) {
continue;
}
var start = event.start.dateTime || event.start.date;
console.log('%s - %s', start, event.summary);
}
}
});
}
// Refer to the Node.js quickstart on how to setup the environment:
// https://developers.google.com/calendar/quickstart/node
// Change the scope to 'https://www.googleapis.com/auth/calendar' and delete any
// stored credentials.
function addEvents(auth){
var event = {
'summary': eventName,
'start': {
'dateTime': startDateTime
},
'end': {
'dateTime': endDateTime
},
'reminders': {
'useDefault': false,
'overrides': [
{'method': 'popup', 'minutes': 12*60},
{'method': 'popup', 'minutes': 30}
],
},
};
// var event = {
// 'summary': 'Trial Event',
// 'location': '800 Howard St., San Francisco, CA 94103',
// 'description': 'A chance to hear more about Google\'s developer products.',
// 'start': {
// 'dateTime': '2018-03-28T09:00:00-07:00',
// 'timeZone': 'America/Los_Angeles',
// },
// 'end': {
// 'dateTime': '2018-03-28T13:45:00-07:00',
// 'timeZone': 'America/Los_Angeles',
// },
// 'reminders': {
// 'useDefault': false,
// 'overrides': [
// {'method': 'email', 'minutes': 24 * 60},
// {'method': 'popup', 'minutes': 10},
// ],
// },
// };
var calendar = google.calendar('v3');
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);
});
}
callback(null,"Job done")
}
}