如何在 Swift 中使用最新的 GMail API 插入邮件？

Question

所以目前我有以下sn-p：

var url = NSURL(string: "https://www.googleapis.com/upload/gmail/v1/users/me/messages?uploadType=media&internalDateSource=dateHeader")


var rawMessage = "" +
    "Date: Thu, 25 Sep 2014 18:35:28 -0700\r\n" +
    "From: John Appleseed <john@appleseed.com>\r\n" +
    "To: Steve Jobs <steve@jobs.com>\r\n" +
    "Subject: One more thing\r\n\r\n" +
    "Some Message"

var rawData = rawMessage.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)

var request = NSMutableURLRequest()
request.URL = url
request.HTTPMethod = "POST"

request.setValue("Bearer \(self.accessToken!)", forHTTPHeaderField: "Authorization")
request.setValue("message/rfc822", forHTTPHeaderField: "Content-Type")
request.setValue("\(rawData?.length)", forHTTPHeaderField: "Content-Length")
request.HTTPBody = rawData!

if let response = NSURLConnection.sendSynchronousRequest(request, returningResponse: nil, error: nil) {
    println(NSString(data: response, encoding: NSUTF8StringEncoding))
}

这可行，但是在documentation 中，他们写了关于使用帖子正文发送消息资源的内容。看起来像这样：

{"raw":base64encoded(data),"labelIds":["Label_1", "Label_2"]}

但是，如果我将 rawData 替换为该消息数据，它就不起作用。

那么我怎样才能插入一条消息并给它一些标签呢？

Answer 1

        func sendEmail() {

            var gtlMessage = GTLGmailMessage()
            gtlMessage.raw = self.generateRawString()

            let appd = UIApplication.sharedApplication().delegate as! AppDelegate
            let query = GTLQueryGmail.queryForUsersMessagesSendWithUploadParameters(nil)
            query.message = gtlMessage

            appd.service.executeQuery(query, completionHandler: { (ticket, response, error) -> Void in
                println("ticket \(ticket)")
                println("response \(response)")
                println("error \(error)")
            })
        }

       func generateRawString() -> String {

            var dateFormatter:NSDateFormatter = NSDateFormatter()
            dateFormatter.dateFormat = "EEE, dd MMM yyyy HH:mm:ss Z"; //RFC2822-Format
            var todayString:String = dateFormatter.stringFromDate(NSDate())

            var rawMessage = "" +
                "Date: \(todayString)\r\n" +
                "From: <mail>\r\n" +
                "To: username <mail>\r\n" +
                "Subject: Test send email\r\n\r\n" +
                "Test body"

            println("message \(rawMessage)")

            return GTLEncodeWebSafeBase64(rawMessage.dataUsingEncoding(NSUTF8StringEncoding))
        }