go กับ google drive

package main

import (
    "io/ioutil"
    "log"
    "os"

    "golang.org/x/oauth2"
    "golang.org/x/oauth2/google"
    drive "google.golang.org/api/drive/v3"
)

func main() {
    // ctx := context.Background()
    b, err := ioutil.ReadFile("./ไฟล์ที่donwloadมา.json")
    if err != nil {
        log.Fatalf("Unable to read client secret file: %v", err)
    }

    config, err := google.JWTConfigFromJSON(b, drive.DriveScope)
    if err != nil {
        log.Fatalf("Unable to parse client secret file to config: %v", err)
    }
    client := config.Client(oauth2.NoContext)

    service, err := drive.New(client)
    if err != nil {
        log.Fatalf("Unable to create Drive service: %v", err)
    }

    filename := "go.mod"

    goFile, err := os.Open(filename)
    if err != nil {
        log.Fatalf("error opening %q: %v", filename, err)
    }
    driveFile, err := service.Files.Create(&drive.File{
        Name:     filename,
        Parents:  []string{"idที่share_folderมา"},
        MimeType: "application/octet-stream",
    }).Media(goFile).Do()
    log.Printf("Got drive.File, err: %#v, %v", driveFile, err)
}