Converting CSV to Google Spreadsheet and removing old Spreadsheet - google-apps-script

Question

I have a functioning script that grabs all CSV attachments in Gmail, and puts them into a folder on Google Drive. It then removes the old file.
This is required because I have scheduled reports emailed to me every day. The old CSVs must be removed.
Now I need to convert the CSV file to Google Spreadsheet, without creating multiple files of the same name.
I used the Drive API to copy the file with the parameter {convert: true}. This will just create a duplicate spreadsheet every time, which I don't want. I have removed this code. Here is the functioning script that just moves the CSV file and deletes the old CSV file:
// GLOBALS
//Array of file extension which you would like to extract to Drive
var fileTypesToExtract = ['csv'];
//Name of the folder in google drive i which files will be put
var folderName = 'GmailToDrive';
//Name of the label which will be applied after processing the mail message
var labelName = 'GmailToDrive';
function GmailToDrive(){
//build query to search emails
var query = '';
//filename:jpg OR filename:tif OR filename:gif OR fileName:png OR filename:bmp OR filename:svg'; //'after:'+formattedDate+
for(var i in fileTypesToExtract){
query += (query === '' ?('filename:'+fileTypesToExtract[i]) : (' OR filename:'+fileTypesToExtract[i]));
}
query = 'in:inbox has:nouserlabels ' + query;
var threads = GmailApp.search(query);
var label = getGmailLabel_(labelName);
var parentFolder;
if(threads.length > 0){
parentFolder = getFolder_(folderName);
}
var root = DriveApp.getRootFolder();
for(var i in threads){
var mesgs = threads[i].getMessages();
for(var j in mesgs){
//get attachments
var attachments = mesgs[j].getAttachments();
for(var k in attachments){
var attachment = attachments[k];
var isDefinedType = checkIfDefinedType_(attachment);
if(!isDefinedType) continue;
var AttachmentTitle = attachment.getName();
var attachmentBlob = attachment.copyBlob();
var existingFile = DriveApp.getFilesByName(attachment.getName());
if (existingFile.hasNext()) {
var file = existingFile.next();
file.setTrashed(true);
}
var filetemp = DriveApp.createFile(attachmentBlob);
parentFolder.addFile(file);
root.removeFile(file);
}
}
threads[i].addLabel(label);
}
}
//This function will get the parent folder in Google drive
function getFolder_(folderName){
var folder;
var fi = DriveApp.getFoldersByName(folderName);
if(fi.hasNext()){
folder = fi.next();
}
else{
folder = DriveApp.createFolder(folderName);
}
return folder;
}
//getDate n days back
// n must be integer
function getDateNDaysBack_(n){
n = parseInt(n);
var date = new Date();
date.setDate(date.getDate() - n);
return Utilities.formatDate(date, Session.getScriptTimeZone(), 'yyyy/MM/dd');
}
function getGmailLabel_(name){
var label = GmailApp.getUserLabelByName(name);
if(!label){
label = GmailApp.createLabel(name);
}
return label;
}
//this function will check for filextension type.
// and return boolean
function checkIfDefinedType_(attachment){
var fileName = attachment.getName();
var temp = fileName.split('.');
var fileExtension = temp[temp.length-1].toLowerCase();
if(fileTypesToExtract.indexOf(fileExtension) !== -1) return true;
else return false;
}

Answer 1

Instead of trying to save the CSV on the drive and convert it into a Google Spreadsheet, you can
directly import the CSV from the attachment into a spreadsheet created for this purpose
Sample
var ss=SpreadsheetApp.create(attachment.getName());
var sheet=ss.getActiveSheet();
var csvData = Utilities.parseCsv(attachment.getDataAsString(), ",");
sheet.getRange(1, 1, csvData.length, csvData[0].length).setValues(csvData);
var file=DriveApp.getFileById(ss.getId())
parentFolder.addFile(file);
root.removeFile(file);
Full code:
function GmailToDrive(){
//build query to search emails
var query = '';
//filename:jpg OR filename:tif OR filename:gif OR fileName:png OR filename:bmp OR filename:svg'; //'after:'+formattedDate+
for(var i in fileTypesToExtract){
query += (query === '' ?('filename:'+fileTypesToExtract[i]) : (' OR filename:'+fileTypesToExtract[i]));
}
query = 'in:inbox has:nouserlabels ' + query;
var threads = GmailApp.search(query);
var label = getGmailLabel_(labelName);
var parentFolder;
if(threads.length > 0){
parentFolder = getFolder_(folderName);
}
var root = DriveApp.getRootFolder();
for(var i in threads){
var mesgs = threads[i].getMessages();
for(var j in mesgs){
//get attachments
var attachments = mesgs[j].getAttachments();
for(var k in attachments){
var attachment = attachments[k];
var isDefinedType = checkIfDefinedType_(attachment);
if(!isDefinedType) continue;
var AttachmentTitle = attachment.getName();
var files = DriveApp.getFilesByName(AttachmentTitle);
while (files.hasNext()) {
var file = files.next();
Logger.log(file.getName());
file.setTrashed(true);
}
var ss=SpreadsheetApp.create(attachment.getName());
var sheet=ss.getActiveSheet();
var csvData = Utilities.parseCsv(attachment.getDataAsString(), ",");
sheet.getRange(1, 1, csvData.length, csvData[0].length).setValues(csvData);
var file=DriveApp.getFileById(ss.getId())
parentFolder.addFile(file);
root.removeFile(file);
}
}
threads[i].addLabel(label);
}
}
//This function will get the parent folder in Google drive
function getFolder_(folderName){
var folder;
var fi = DriveApp.getFoldersByName(folderName);
if(fi.hasNext()){
folder = fi.next();
}
else{
folder = DriveApp.createFolder(folderName);
}
return folder;
}
//getDate n days back
// n must be integer
function getDateNDaysBack_(n){
n = parseInt(n);
var date = new Date();
date.setDate(date.getDate() - n);
return Utilities.formatDate(date, Session.getScriptTimeZone(), 'yyyy/MM/dd');
}
function getGmailLabel_(name){
var label = GmailApp.getUserLabelByName(name);
if(!label){
label = GmailApp.createLabel(name);
}
return label;
}
//this function will check for filextension type.
// and return boolean
function checkIfDefinedType_(attachment){
var fileName = attachment.getName();
var temp = fileName.split('.');
var fileExtension = temp[temp.length-1].toLowerCase();
if(fileTypesToExtract.indexOf(fileExtension) !== -1) return true;
else return false;
}