Send Message in Go

message.go

package main

import (
  "bytes"
  "encoding/json"
  "fmt"
  "net/http"
  "log"
  "os"
  "io"
)

// CreateMessageDataV2 struct
type CreateMessageDataV2 struct {
  From          string      `json:"from,omitempty"`
  To            interface{} `json:"to,omitempty"`
  Text          string      `json:"text,omitempty"`
  Media         []string    `json:"media,omitempty"`
  ApplicationID string      `json:"applicationId,omitempty"`
  Tag           string      `json:"tag,omitempty"`
}


func main() {

  messaging_token := os.Getenv("BANDWIDTH_MESSAGING_TOKEN")
  messaging_secret := os.Getenv("BANDWIDTH_MESSAGING_SECRET")
  messaging_application_id := os.Getenv("BANDWIDTH_MESSAGING_APPLICATION_ID")
  account_id := os.Getenv("BANDWIDTH_ACCOUNT_ID")

  messaging_uri := fmt.Sprintf("https://messaging.bandwidth.com/api/v2/users/%s/messages", account_id)
  method := "POST"

  body := &CreateMessageDataV2{
    ApplicationID: messaging_application_id,
    From: "+",
    To: "+",
    Text: "Hi",
    Tag: "test message",
  }

  buf := new(bytes.Buffer)
  json.NewEncoder(buf).Encode(body)


  req, _ := http.NewRequest(method, messaging_uri, buf)
  req.Header.Add("Content-Type", "application/json")
  req.SetBasicAuth(messaging_token, messaging_secret)
  client := &http.Client {}
  res, e := client.Do(req)
  if e != nil {
    log.Fatal(e)
  }
  defer res.Body.Close()

  io.Copy(os.Stdout, res.Body)

}