Implement the Callbacks

using System.Collections.Generic;
using Appcharge.iOS.Checkout.Interfaces;
using Appcharge.iOS.Checkout.Models;

public class AppchargeCallbackImpl : ICheckoutPurchase
{
    public void OnInitialized()
    {
        Debug.Log("SDK initialization was successful.");
    }

    public void OnInitializeFailed(ErrorMessage error)
    {
        Debug.Log("SDK initialization failed.");
    }

    public void OnPricePointsSuccess(PricePointsModel pricePoints)
    {
       Debug.Log("Price points retrived.");
    }

    public void OnPricePointsFail(ErrorMessage error)
    {
        Debug.Log("Failed to retrieve price points.");
    }

    public void OnPurchaseSuccess(OrderResponseModel order, string sessionMetadata)
    {
        Debug.Log("Purchase was successful.");
    }

    public void OnPurchaseFailed(ErrorMessage error, string sessionMetadata)
    {
        Debug.Log("Purchase failed.");
    }

    public void OnPurchaseConsumed(bool consumed)
    {
        Debug.Log("Purchase was either consumed or not consumed.");
    }

    public void OnGetNonConsumeOrdersSuccess(List<string> nonConsumedOrders)
    {
        Debug.Log("List of non-consumed purchases was sucessfully retrieved.");
    }

    public void OnGetNonConsumeOrdersFail(ErrorMessage error)
    {
        Debug.Log("Failed to retrieve list of non-consumed purchases.");
    }
}