Error while calling freshchat APIs from google apps script - google-apps-script

Question

I am trying to call FreshChat API from google apps script. GET request of outbound-messages is working fine but POST request is failing with error
Exception: Request failed for http://api.in.freshchat.com returned code 400. Truncated server response: {"success":false,"errorCode":0,"errorMessage":"HTTP 405 Method Not Allowed","errorData":null,"errorName":null} (use muteHttpExceptions option to examine full response)
Below are the details of request
function myFunctiontest() {
var url = "http://api.in.freshchat.com/v2/outbound-messages/whatsapp";
var headersPOST = {
'Authorization': 'Bearer XXXXXX',
'Content-Type': 'application/json',
'Accept': 'application/json'
};
var bodyPayload = {"from": {"phone_number": "+XXXXXX"},"provider": "whatsapp","to": [{"phone_number": "+XXXXX"}],"data": {"message_template": {"storage": "none","template_name": "XXXXXX","namespace": "XXXXX","language": {"policy": "deterministic","code": "en"},"template_data": [{"data": "XXXXX"}]}}};
var options = {
'method': 'post',
'contentType': 'application/json',
'headers': headersPOST,
'payload': JSON.stringify(bodyPayload),
'muteHttpExceptions':true
};
var response = UrlFetchApp.fetch(url, options);
console.log(response.getAllHeaders());
Logger.log(JSON.parse(response.getContentText()));
}
Same headers are working for GET request. Also same post request is working from POSTMAN.

Answer 1

Freshchat support helped for solving the issue.
There are two major changes
use https instead of http
Added contentType inside headers.
function myFunctiontest() {
var url = "https://api.in.freshchat.com/v2/outbound-messages/whatsapp";
var headersPOST = 'Bearer XXXXXX';
var bodyPayload = {"from": {"phone_number": "+XXXXXX"},"provider": "whatsapp","to": [{"phone_number": "+ XXXXX"}],"data": {"message_template": {"storage": "none","template_name": "XXXXXX","namespace": "XXXXX","language": {"policy": "deterministic","code": "en"},"template_data": [{"data": "XXXXX"}]}}};
var options = {
method: 'POST',
//content-type: 'application/json',
headers: { Authorization: headersPOST, 'content-type': 'application/json'},
payload: JSON.stringify(bodyPayload),
muteHttpExceptions:true
};
var response = UrlFetchApp.fetch(url, options);
var text = response.getResponseCode();
}