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init.js
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init.js
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'use strict';
/**
* This is used by several samples to easily provide an oauth2 workflow.
*/
const {
google
} = require('googleapis');
const opn = require('opn');
const fs = require('fs');
const path = require('path');
const keyPath = path.join(__dirname, 'credentials.json');
let keys = {
redirect_uris: ['']
};
if (fs.existsSync(keyPath)) {
const keyFile = require(keyPath);
keys = keyFile.installed || keyFile.web;
}
class Client {
constructor(options) {
this._options = options || {
scopes: []
};
this.TOKEN_PATH = 'token.json';
this.SCOPES = ['https://www.googleapis.com/auth/drive'];
// create an oAuth client to authorize the API call
this.oAuth2Client = new google.auth.OAuth2(
keys.client_id,
keys.client_secret,
keys.redirect_uris[0]
);
}
authorize(callback) {
// Check if we have previously stored a token.
fs.readFile(this.TOKEN_PATH, (err, token) => {
let isContainFile = true;
if (err) {
isContainFile = false;
this.authenticate()
} else
this.oAuth2Client.setCredentials(JSON.parse(token));
callback(isContainFile, this.oAuth2Client);
});
}
// Open an http server to accept the oauth callback. In this
// simple example, the only request to our webserver is to
// /oauth2callback?code=<code>
authenticate() {
opn(this.oAuth2Client.generateAuthUrl({
access_type: 'offline',
scope: this.SCOPES
}),{
wait: false
});
}
}
module.exports = new Client();