Error uploading .xls file and converting to Google Spreadsheet via GAS - google-apps-script

Question

Prior Research
Please do not close this question as a duplicate because my question deals with how to resolve the specific error message I am receiving and not the general question of whether my objective is achievable or not — as some other related questions, yielded by my research and below detailed, have asked.
Related questions and why they do not apply here
This question, asked 7/27/2012, does not apply because it: (1) is too old (after 10 months, new solutions/methods might exist) and (2) does not deal with the specific error message I am experiencing.
This question, asked 10/12/2012, fails to apply for similar reasons.
My below code was copied from here which was forked from here. These are presumably, working solutions because they have been referenced as such from other question/answer exchanges here on Stack Overflow.
Objective
Programmatically, I am trying to:
Search my email inbox.
Find Excel (.xls) file attachments.
Upload those .xls file attachments to Google Drive.
While uploading, convert the .xls files into a Google Spreadsheet file format.
Problem
When I execute processInbox() (code shown at the bottom of this question), it fails and I get the error message shown below.
Error Message
Request failed for returned code 403.
Server response:
{
"error":{
"errors":[
{
"domain":"usageLimits",
"reason":"accessNotConfigured",
"message":"AccessNotConfigured"
}
],
"code":403,
"message":"AccessNotConfigured"
}
}
(line 13, file "DriveUpload")
Question
What am I doing wrong? And how can I fix it?
For example, do I need to do something special in my API console relative to setting up my project to, say, access Google Drive or something? What am I missing?
Note: I have not yet successfully implemented oAuth in any of my applications, yet.
Error Source
Line 13
(This is the code line referenced by the error message.)
var uploadRequest = UrlFetchApp.fetch("https://www.googleapis.com/upload/drive/v2/files/?uploadType=media&convert=true&key="+key, params); // convert=true convert xls to google spreadsheet
Code
The complete body of code I am working with is shown below for your reference. I extracted the error-triggering, “line 13,” and highlighted it above to help us focus on the proximate cause of the problem.
DriveUpload.js
function uploadXls(file) {
authorize();
var key = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; // <-- developer key
var metadata = { title: file.getName() }
var params = {method:"post",
oAuthServiceName: "drive",
oAuthUseToken: "always",
contentType: "application/vnd.ms-excel",
contentLength: file.getBytes().length,
payload: file.getBytes()
};
// convert=true convert xls to google spreadsheet
var uploadRequest = UrlFetchApp.fetch("https://www.googleapis.com/upload/drive/v2/files/?uploadType=media&convert=true&key="+key, params);
var uploadResponse = Utilities.jsonParse(uploadRequest.getContentText());
var params = {method:"put",
oAuthServiceName: "drive",
oAuthUseToken: "always",
contentType: "application/json",
payload: Utilities.jsonStringify(metadata)
};
var metaRequest = UrlFetchApp.fetch("https://www.googleapis.com/drive/v2/files/"+uploadResponse.id+"?key="+key, params)
return DocsList.getFileById(uploadResponse.id);
}
function authorize() {
var oauthConfig = UrlFetchApp.addOAuthService("drive");
var scope = "https://www.googleapis.com/auth/drive";
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");
}
function processInbox() {
// get all threads in inbox
var threads = GmailApp.getInboxThreads();
for (var i = 0; i < threads.length; i++) {
// get all messages in a given thread
var messages = threads[i].getMessages();
// iterate over each message
for (var j = 0; j < messages.length; j++) {
// log message subject
var subject = messages[j].getSubject()
//Logger.log(subject);
if ( subject == "with xls attach" ){
Logger.log(messages[j].getSubject());
var attach = messages[j].getAttachments()[0];
var name = attach.getName();
var type = attach.getContentType();
//var data = attach.getDataAsString();
Logger.log( name + " " + type + " " );
var file = uploadXls(attach);
SpreadsheetApp.open(file);
}
}
}
};

Answer 1

Drive API is already built in GAS: https://developers.google.com/apps-script/reference/drive/
Use DriveApp and your problems go away ;-)

Answer 2

This maybe a temp solution
Step 1: Use a Google Form to Collect Data to a Google spreadsheet
Step 2: Add the Zoho Sheet App to your Google Drive
In a Zoho Sheet
Goto
Data Menu
»Link External Data
Select either
CSV
RSS/Atom Feed
or HTML Page
You can schedule it to update at specific time intervals
What I like is the VBA and Macros in Zoho
You can also do Pivot Charts and Tables
You can copy and paste Excel VBA into Zoho !
I have an Unpivot VBA that I will run on my Tabular dataset
before I can do a PivotChart
It is hard to beat all the functionality of Excel and I often fall back on familiar tools !
If I hear of anything I will post it
Good luck