Fetch JSON object from GAS WebApp from another development GAS WebApp? - google-apps-script

Question

I have two different GAS projects Script1 and Script2.
Script1:
It is a development project with doPost() function. It uses the e.parameter or e.postData.contents to do something.
Script2:
It is a test script. It has also doPost() function. I want to transfer the doPost() e.parameter to Script1 by a post request. But the URLFetchApp success when I use the Current web app URL and ends in /exec. But I want to use the latest code and ends in /dev. Because of the Script1 is a development project and I can't update its version for a small change.
I tried this code. It not working
function myFunction() {
//var URL = "https://script.google.com/macros/s/xxxxxxxxxxxxxxxxxxxxxxxxxxx/exec";
var URL = "https://script.google.com/macros/s/xxxxxxxxxxxxxxxxxxxxxxxxxxxx/dev";
var data = {
'message' : "This is working"
}
var options = {
'method' : 'post',
'contentType': 'application/json',
'payload' : JSON.stringify(data)
};
var response = UrlFetchApp.fetch(URL, options);
}

Answer 1

I believe your goal as follows.
You want to access to Web Apps with the dev mode using Google Apps Script.
For this, How about this answer?
Modification points:
In order to access to the Web Apps with the dev mode, please use the access token. And in this sample, the scope of https://www.googleapis.com/auth/drive.readonly is used for the access token.
Modified script:
When your script is modified, please modify as follows.
function myFunction() {
//var URL = "https://script.google.com/macros/s/xxxxxxxxxxxxxxxxxxxxxxxxxxx/exec";
var URL = "https://script.google.com/macros/s/xxxxxxxxxxxxxxxxxxxxxxxxxxxx/dev";
var data = {
'message' : "This is working"
}
var options = {
'method' : 'post',
'contentType': 'application/json',
'payload' : JSON.stringify(data),
'headers': {'authorization': 'Bearer ' + ScriptApp.getOAuthToken()} // Added
};
var response = UrlFetchApp.fetch(URL, options);
}
// DriveApp.getFiles() // Added
Note:
The comment line of // DriveApp.getFiles() is used for automatically detecting the scope of https://www.googleapis.com/auth/drive.readonly by the script editor.
When the access token is used, even when Who has access to the app: is Only myself, the script works.
References:
Web Apps
Taking advantage of Web Apps with Google Apps Script