(JavaScript) Download a Specific GMail Message into a Chilkat Email Object

Demonstrates how to download a GMail message into a Chilkat Email object.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

var http = new CkHttp();
http.AuthToken = "GMAIL-ACCESS-TOKEN";

// The id of the GMail message to download.
var id = "166e50fed0b9b0cb";
var userId = "me";

http.SetUrlVar("userId","me");
http.SetUrlVar("id",id);

// Fetch the email.
var url = "https://www.googleapis.com/gmail/v1/users/{$userId}/messages/{$id}?format=raw";
var sbJson = new CkStringBuilder();
success = http.DownloadSb(url,"utf-8",sbJson);
if (success !== true) {
    console.log(http.LastErrorText);
    return;
}

var json = new CkJsonObject();
json.LoadSb(sbJson);
json.EmitCompact = false;

if (http.LastStatus !== 200) {
    console.log(json.Emit());
    console.log("Failed.");
    return;
}

// The returned JSON contains something like this:

// {
//   "id": "166e50fed0b9b0cb",
//   "threadId": "166e50fed0b9b0cb",
//   "labelIds": [
//     "CATEGORY_SOCIAL",
//     "INBOX"
//   ],
//   "snippet": "...",
//   "historyId": "582477",
//   "internalDate": "1541441317000",
//   "sizeEstimate": 28603,
//   "raw": "BASE64URL_CONTENT"
// }

// The RFC822 MIME of the email is contained in the "raw" as a base64URL encoded string.
// Let's decode and load into a Chilkat email object..
var sbRaw = new CkStringBuilder();
json.StringOfSb("raw",sbRaw);
sbRaw.Decode("base64url","utf-8");

var email = new CkEmail();
email.SetFromMimeSb(sbRaw);

// Now we can use the email API to do whatever we desire..
console.log("From: " + email.FromAddress);
console.log("Subject: " + email.Subject);
// ...