example usage of facebook marketing calls in golang

fb_sdk_marketing.go

package main

import (
	"fmt"

	fb "github.com/huandu/facebook"
)

type AdCampaign struct {
	EffectiveStatus string
	BuyingType      string
}

func main() {
	sess, err := getSession()
	if err != nil {
		fmt.Println(err.Error())
	}

	// test a single get request
	singleGet(sess)
	batchGet(sess)

}

func singleGet(sess *fb.Session) {
	res, err := sess.Get("23842690842140446", fb.Params{
		"fields": "effective_status",
	})
	if err != nil {
		fmt.Println(err.Error())
	}

	var campaign AdCampaign
	res.Decode(&campaign)
	fmt.Println("print status in struct:", campaign.EffectiveStatus)
}

// batchGet is based on https://developers.facebook.com/docs/marketing-api/asyncrequests/v2.11
func batchGet(sess *fb.Session) {
	fmt.Println("\nmaking batch requests now...")
	params1 := fb.Params{
		"method":       fb.GET,
		"relative_url": "23842690842140446?fields=effective_status",
	}
	params2 := fb.Params{
		"method":       fb.GET,
		"relative_url": "23842690842140446?fields=buying_type",
	}

	results, err := sess.BatchApi(params1, params2)
	if err != nil {
		fmt.Println(err.Error())
	}

	// batchResult1 and batchResult2 are response for params1 and params2.
	batchResult1, _ := results[0].Batch()
	batchResult2, _ := results[1].Batch()

	// get the first result
	res := batchResult1.Result
	var campaign1 AdCampaign
	res.Decode(&campaign1)
	fmt.Println("campaign status:", campaign1.EffectiveStatus)

	// get the second result
	res = batchResult2.Result
	var campaign2 AdCampaign
	res.Decode(&campaign2)
	fmt.Println("campaign buying type:", campaign2.BuyingType)

	fmt.Println("\n============== usage info ============")
	fmt.Println(res.UsageInfo())
}

func getSession() (*fb.Session, error) {
	// create a global App var to hold app id and secret.
	var app = fb.New("app-id", "app-secret")
	session := app.Session("access-token")
	session.Version = "v2.11"

	// validate access token. err is nil if token is valid.
	// err := session.Validate()
	// if err != nil {
	// 	return nil, err
	// }

	return session, nil

}