Swift API v2 Example of uploading a file using filesUploadSession(Start, Append, Finish)

I don't think we have a full sample using that published, but here's a very simple example I just put together: (apologies for the atrocious code formatting on the forum)

        // Write a file to the local documents directory

        let text = "Hello world. Usually something much longer here."

        let filename = "working-draft.txt"

        let localDir = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as String

        let localPath = localDir.stringByAppendingString(filename)

        try! text.writeToFile(localPath, atomically:true, encoding:NSUTF8StringEncoding)

        let fileURL = NSURL.fileURLWithPath(localPath)

        let fileLength = UInt64(text.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))

        print(fileURL)

        print(fileLength)

        // start the upload session, passing along the NSURL to the whole file in this case, since it's small

        // there are also versions that take NSData or NSInputStream as the body

        client.filesUploadSessionStart(body: fileURL).response { response, error in

            if let result = response {

                // the call succeeded

                print(result)

                // also call filesUploadSessionAppend to add more data if/as necessary, as many times as necessary (be sure to track the offset)

                // we're ready to finish the upload and commit the file

                client.filesUploadSessionFinish(cursor: Files.UploadSessionCursor(sessionId: result.sessionId, offset: fileLength),

                                                commit: Files.CommitInfo(path: "/test_swift_upload_session.txt"),

                                                // no additional data to add at this point in this case

                                                body:NSData()).response { response, error in

                                                    if let result = response {

                                                        print(result)

                                                    } else {

                                                        print(error!)

                                                    }

                }

            } else {

                // the call failed

                print(error!)

            }

        }