meifamily/ptt-alertor

package messenger

import (
    "encoding/json"
)

type greeting struct {
    GreetingObjects []greetingObject
}

type greetingObject struct {
    Locale string `json:"locale"`
    Text   string `json:"text"`
}

// SetGreetingText set messenger greeting text
// https://developers.facebook.com/docs/messenger-platform/reference/messenger-profile-api/greeting
func (m *Messenger) SetGreetingText(greetingStrings []string) {
    greeting := greeting{}
    for _, str := range greetingStrings {
        obj := greetingObject{
            Locale: "default",
            Text:   str,
        }
        greeting.GreetingObjects = append(greeting.GreetingObjects, obj)
    }
    data, err := json.Marshal(greeting)
    if err != nil {
        panic(err)
    }
    m.callProfileAPI(data)
}

func (m *Messenger) callProfileAPI(body interface{}) {
    url := profileURL + m.AccessToken
    callAPI(url, body)
}