Gmail App: Find threads which have a calendar entry - google-apps-script

Question

Some messages have calendar entries at the top of them like this:
In GScript, is there any way to find messages which have these calendar entries? If so, how does one extract the information from it?
Update
I took a lucky shot and found that it's classed as an attachment (of type ics), but there still remains the issue of extracting the data from this file...

Answer 1

Try this:
function getIcs(){
var threads = GmailApp.getInboxThreads();
var thread, messages, message, attachments, attachment;
var result = [];
for (var i = 0; i < threads.length; i++){
messages = threads[i].getMessages();
for (var j = 0; j < messages.length; j++){
message = messages[j];
attachments = message.getAttachments();
for (var k = 0; k < attachments.length; k++){
attachment = attachments[k];
if(attachment){
if (attachment.getContentType() == "application/ics"){
Logger.log("found ics");//continue;
result.push(message);
}
}
}
}
}
return result;
}
This method will view every thread, every message in it and every attachment in each message, and returns a list of the message objects that have an attachment of type application/ics.
UPDATE
In addition to my previous code, the following function will return an array of event objects based on the attachments found in the other method:
function getSutff(){
var msgs = getIcs();
var ics;
var position;
var eventId;
var event = [];
for (var i = 0; i < msgs.length; i++){
ics = msgs[i].getAttachments()[0].getDataAsString();
position = (ics.search("UID:")) + 4;
eventId = ics.substr(position,26);
event.push(CalendarApp.getEventById(eventId));
}
Logger.log(event)
return event;
}