package main

import (
	"encoding/json"
	"fmt"
	"log"

	"github.com/Arman92/go-tdlib"
)

func failOnError(err error, msg string) {
	if err != nil {
		log.Fatalf("%s: %s", msg, err)
	}
}

func logOnError(err error, msg string) {
	if err != nil {
		log.Printf("%s: %s", msg, err)
	}
}

func unmarshalCallbackQueryPayload(msg []byte) (tdlib.CallbackQueryPayload, error) {
	var rawMsg *json.RawMessage

	rawMsg = msg

	if rawMsg == nil {
		return nil, nil
	}
	var objMap map[string]interface{}
	err := json.Unmarshal(*rawMsg, &objMap)
	if err != nil {
		return nil, err
	}

	switch tdlib.CallbackQueryPayloadEnum(objMap["@type"].(string)) {
	case tdlib.CallbackQueryPayloadDataType:
		var callbackQueryPayloadData tdlib.CallbackQueryPayloadData
		err := json.Unmarshal(*rawMsg, &callbackQueryPayloadData)
		return &callbackQueryPayloadData, err

	case tdlib.CallbackQueryPayloadGameType:
		var callbackQueryPayloadGame tdlib.CallbackQueryPayloadGame
		err := json.Unmarshal(*rawMsg, &callbackQueryPayloadGame)
		return &callbackQueryPayloadGame, err

	default:
		return nil, fmt.Errorf("Error unmarshaling, unknown type:" + objMap["@type"].(string))
	}
}