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sheets.js
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sheets.js
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var fs = require('fs'),
readline = require('readline'),
google = require('googleapis'),
googleAuth = require('google-auth-library'),
Promise = require('bluebird'),
SCOPES = ['https://www.googleapis.com/auth/spreadsheets'],
TOKEN_DIR = (process.env.HOME || process.env.HOMEPATH ||
process.env.USERPROFILE) + '/.credentials/',
TOKEN_PATH = TOKEN_DIR + 'script-nodejs-quickstart.json',
TOKEN_FILE_NAME = 'client_secret.json';
function auth() {
return new Promise(function (resolve, reject) {
fs.readFile(TOKEN_FILE_NAME, function processClientSecrets(err, content) {
if (err) {
return reject(err);
}
resolve(JSON.parse(content));
});
}).then(function (credentials) {
return authorize(credentials);
});
}
function authorize(credentials) {
var clientSecret = credentials.installed.client_secret,
clientId = credentials.installed.client_id,
redirectUrl = credentials.installed.redirect_uris[0],
auth = new googleAuth(),
oauth2Client = new auth.OAuth2(clientId, clientSecret, redirectUrl);
return new Promise(function (resolve, reject) {
fs.readFile(TOKEN_PATH, function (err, token) {
if (err) {
resolve(getNewToken(oauth2Client));
} else {
oauth2Client.credentials = JSON.parse(token);
resolve(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) {
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);
});
});
}
/**
* 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);
}
function getStatus(auth, channel) {
return executeScript(auth, 'status', [channel]);
}
function bookSandbox(auth, channel, sandbox, user) {
return executeScript(auth, 'putUser', [channel, sandbox, user]);
}
function releaseSandbox(auth, channel, sandbox) {
return executeScript(auth, 'removeUser', [channel, sandbox]);
}
function getCurrentUser(auth, channel, sandbox) {
return executeScript(auth, 'getSandboxUser', [channel, sandbox]);
}
function executeScript(auth, funcName, args) {
return new Promise(function (resolve, reject) {
var scriptId = process.env.SCRIPT_ID;
var script = google.script('v1');
script.scripts.run({
auth: auth,
resource: {
function: funcName,
parameters: args,
},
scriptId: scriptId,
devMode: true
}, function (err, resp) {
if (err) {
// The API encountered a problem before the script started executing.
console.log('The API returned an error: ' + err);
reject(err);
}
if (resp.error) {
// The API executed, but the script returned an error.
// Extract the first (and only) set of error details. The values of this
// object are the script's 'errorMessage' and 'errorType', and an array
// of stack trace elements.
var error = resp.error.details[0];
console.log('Script error message: ' + error.errorMessage);
console.log('Script error stacktrace:');
if (error.scriptStackTraceElements) {
// There may not be a stacktrace if the script didn't start executing.
for (var i = 0; i < error.scriptStackTraceElements.length; i++) {
var trace = error.scriptStackTraceElements[i];
console.log('\t%s: %s', trace.function, trace.lineNumber);
}
}
reject(resp.error);
} else {
resolve(resp.response);
}
});
})
}
module.exports = {
authorize: auth,
getStatus: getStatus,
bookSandbox: bookSandbox,
releaseSandbox: releaseSandbox,
getCurrentUser: getCurrentUser
};