import "github.com/gamegos/gcmlib"

package main

import (
	"fmt"

	gcm "github.com/gamegos/gcmlib"
)

func main() {
	client := gcm.NewClient(gcm.Config{
	    APIKey:     "your-gcm-api-key",
	    MaxRetries: 4,
	})

	message := &gcm.Message{
	    RegistrationIDs: []string{"registrationID1", "registrationID2"},
	    Notification: &gcm.Notification{
	        Title: "Example GCM message",
	        Body:  "Hello world",
	    },
	    Data: map[string]string{
	        "customKey": "custom value",
	    },
	}

	response, err := client.Send(message)
	if err != nil {
	    fmt.Printf("Error: %#v\n", err)
	    return
	}

	fmt.Printf("Success: %#v\n", response)
}