Google Apps Script: Save Spreadsheet as ODS for Local Backup - excel

Question

I could use a hand. My company uses Google Sheets extensively, and we need a way to access files when we lose our Internet connection.
I could not get any of the examples found on this site to work for creating xls or ods from Google Sheets via script.
I did script a way to create csv backups, accessible from a local Google Drive folder. When used with an hourly trigger, this script creates csv files of every sheet of any spreadsheet modified in the last hour, puts them in a folder, and zips it inside a folder specifically for backups. From there I can move the zip to our local server.
function backUpMaker() {
var backupFolderId = '<Id of Backup Folder>';
var timeNow = new Date();
var newFolder = DocsList.createFolder(timeNow);
var newFolderId =newFolder.getId();
newFolder.addToFolder(DocsList.getFolderById(backupFolderId));
newFolder.removeFromFolder(DocsList.getRootFolder());
var sheets = DriveApp.getFilesByType(MimeType.GOOGLE_SHEETS);
while (sheets.hasNext()) {
var sheet = sheets.next();
var lastUpdate = sheet.getLastUpdated();
var timeHourAgo = new Date();
timeHourAgo = timeNow - 3600000;
if(lastUpdate >= timeHourAgo){
var sheetId = sheet.getId();
var csv = eachSheet(sheetId,newFolderId);
}
}
var backupFolder = DocsList.getFolderById(backupFolderId);
try{
backupFolder.createFile(Utilities.zip(newFolder.getFiles(), timeNow + '.zip'));
} catch(err) {
Logger.log(err);
}
newFolder.setTrashed(true);
}
function eachSheet(key,newFolderId) {
var ss = SpreadsheetApp.openById(key);
var ssId = ss.getId();
var ssName = ss.getName();
var howManySheets = ss.getNumSheets();
try{
for (var sheetIndex=0; sheetIndex < howManySheets; sheetIndex++) {
var activeSheet = ss.getSheets()[sheetIndex];
var activeName = activeSheet.getName();
if(activeName != 'Dropdowns'){ //Skip a hidden sheet used for validation on many of our spreadsheets
var activeId = activeSheet.getSheetId();
var time = new Date();
var fileName = time + " Backup: " + ssName + " " + activeName + ".csv";
var csv = contentCSV(ssId,activeId);
var folder = DocsList.getFolderById(newFolderId);
folder.createFile(fileName, csv, 'text/plain');
}
}
} catch(err) {
Logger.log(err)
}
}
function contentCSV(key,gid) {
var file = DocsList.getFileById(key);
var response = UrlFetchApp.fetch("https://spreadsheets.google.com/feeds/download/spreadsheets/Export?key=" + key +
"&gid=" + gid + "&exportFormat=csv", oAuth());
var fileText = response.getContentText();
return fileText;
}
function oAuth() {
var oauthConfig = UrlFetchApp.addOAuthService("spreadsheets");
var scope = "https://spreadsheets.google.com/feeds"
oauthConfig.setConsumerKey("anonymous");
oauthConfig.setConsumerSecret("anonymous");
oauthConfig.setRequestTokenUrl("https://www.google.com/accounts/OAuthGetRequestToken?scope="+scope);
oauthConfig.setAuthorizationUrl("https://accounts.google.com/OAuthAuthorizeToken");
oauthConfig.setAccessTokenUrl("https://www.google.com/accounts/OAuthGetAccessToken");
var requestData = {
"oAuthServiceName": "spreadsheets",
"oAuthUseToken": "always",
};
return requestData;
}
How would I modify this to save as ods rather than csv? Or is there a better way to save backups? Thank you for your help!
Working code follows, thanks to input by #serge-insas :
Note: To make this work, enter your backup folder's id key, then choose ods or xlsx by commenting out the other choice. Then you need to set up a timed hourly trigger for backUpMaker(). Logs will catch errors for files that have been moved temporarily. Here goes:
function backUpMaker() {
var backupFolderId = '0B5--------------------1ZX1k';
//var exportFormat = 'ods';
var exportFormat = 'xlsx';
var timeNow = new Date();
var newFolder = DocsList.createFolder(timeNow);
var newFolderId =newFolder.getId();
newFolder.addToFolder(DocsList.getFolderById(backupFolderId));
newFolder.removeFromFolder(DocsList.getRootFolder());
var sheets = DriveApp.getFilesByType(MimeType.GOOGLE_SHEETS);
while (sheets.hasNext()) {
var sheet = sheets.next();
var lastUpdate = sheet.getLastUpdated();
var timeHourAgo = new Date();
timeHourAgo = timeNow - 3600000;
if(lastUpdate >= timeHourAgo){
try{
var key = sheet.getId();
var name = sheet.getName();
var fileName = timeNow + " Backup: " + name + "." + exportFormat;
var blob = contentBackup(key,exportFormat);
var folder = DocsList.getFolderById(newFolderId);
folder.createFile(blob).rename(fileName);
} catch(err){
Logger.log(err);
}
}
}
var backupFolder = DocsList.getFolderById(backupFolderId);
try{
backupFolder.createFile(Utilities.zip(newFolder.getFiles(), timeNow + '.zip'));
} catch(err) {
Logger.log(err);
}
newFolder.setTrashed(true);
}
function contentBackup(key,exportFormat) {
try{
if(exportFormat == 'xlsx'){
exportFormat = 'xls';
}
var file = DocsList.getFileById(key);
var response = UrlFetchApp.fetch("https://spreadsheets.google.com/feeds/download/spreadsheets/Export?key=" + key +
"&exportFormat=" + exportFormat, oAuth());
var fileBlob = response.getBlob();
return fileBlob;
} catch(err) {
Logger.log(err)
}
}
function oAuth() {
var oauthConfig = UrlFetchApp.addOAuthService("spreadsheets");
var scope = "https://spreadsheets.google.com/feeds"
oauthConfig.setConsumerKey("anonymous");
oauthConfig.setConsumerSecret("anonymous");
oauthConfig.setRequestTokenUrl("https://www.google.com/accounts/OAuthGetRequestToken?scope="+scope);
oauthConfig.setAuthorizationUrl("https://accounts.google.com/OAuthAuthorizeToken");
oauthConfig.setAccessTokenUrl("https://www.google.com/accounts/OAuthGetAccessToken");
var requestData = {
"oAuthServiceName": "spreadsheets",
"oAuthUseToken": "always",
};
return requestData;
}

Answer 1

Your code needed very few changes to get ods files.
2 differences : the requested format in the urlFetch becomes "ods" and the returned object is not a string anymore but a blob.
Beside that, I kept all the sheet selection functions that you wrote and it seems to work fine as well. (nice job you did !).
Below is the full code I reproduced from yours and changed as described. My tests were working fine.
function backUpMaker() {
var backupFolderId = '0B3qS--------------TXdlY2M';
var timeNow = new Date();
var newFolder = DocsList.createFolder(timeNow);
var newFolderId =newFolder.getId();
newFolder.addToFolder(DocsList.getFolderById(backupFolderId));
newFolder.removeFromFolder(DocsList.getRootFolder());
var sheets = DriveApp.getFilesByType(MimeType.GOOGLE_SHEETS);
while (sheets.hasNext()) {
var sheet = sheets.next();
var lastUpdate = sheet.getLastUpdated();
var timeHourAgo = new Date();
timeHourAgo = timeNow - 3600000;
if(lastUpdate >= timeHourAgo){
var sheetId = sheet.getId();
var csv = eachSheet(sheetId,newFolderId);
}
}
var backupFolder = DocsList.getFolderById(backupFolderId);
try{
backupFolder.createFile(Utilities.zip(newFolder.getFiles(), timeNow + '.zip'));
} catch(err) {
Logger.log(err);
}
newFolder.setTrashed(true);
}
function eachSheet(key,newFolderId) {
var ss = SpreadsheetApp.openById(key);
var ssId = ss.getId();
var ssName = ss.getName();
var howManySheets = ss.getNumSheets();
try{
for (var sheetIndex=0; sheetIndex < howManySheets; sheetIndex++) {
var activeSheet = ss.getSheets()[sheetIndex];
var activeName = activeSheet.getName();
if(activeName != 'Dropdowns'){ //Skip a hidden sheet used for validation on many of our spreadsheets
var activeId = activeSheet.getSheetId();
var time = new Date();
var fileName = time + " Backup: " + ssName + " " + activeName + ".ods";
var blob = contentODS(ssId,activeId);
var folder = DocsList.getFolderById(newFolderId);
folder.createFile(blob).rename(fileName);
}
}
} catch(err) {
Logger.log(err)
}
}
function contentODS(key,gid) {
var file = DocsList.getFileById(key);
var response = UrlFetchApp.fetch("https://spreadsheets.google.com/feeds/download/spreadsheets/Export?key=" + key +
"&gid=" + gid + "&exportFormat=ods", oAuth());
var fileBlob = response.getBlob();
return fileBlob;
}
function oAuth() {
var oauthConfig = UrlFetchApp.addOAuthService("spreadsheets");
var scope = "https://spreadsheets.google.com/feeds"
oauthConfig.setConsumerKey("anonymous");
oauthConfig.setConsumerSecret("anonymous");
oauthConfig.setRequestTokenUrl("https://www.google.com/accounts/OAuthGetRequestToken?scope="+scope);
oauthConfig.setAuthorizationUrl("https://accounts.google.com/OAuthAuthorizeToken");
oauthConfig.setAccessTokenUrl("https://www.google.com/accounts/OAuthGetAccessToken");
var requestData = {
"oAuthServiceName": "spreadsheets",
"oAuthUseToken": "always",
};
return requestData;
}