SLVZ.Billing 1.0.0

📦 SLVZ Billing

SLVZ Billing is a lightweight and easy-to-use .NET library for handling in-app purchases via Cafe Bazaar and Myket on Android.
It simplifies the integration of the Myket payment system and Poolakey(Cafe Bazaar) for .NET MAUI apps without needing to write any Java code directly.

✨ Features

• Supports both in-app purchases and subscriptions
• Simple, async-based API
• No extra dependencies required
• Works with .NET MAUI
• Secure and easy to integrate

⚙️ Installation

Install-Package SLVZ.Billing

⚙️ Usage Example

1. Initialize the library

using SLVZ.Billing;

List<string> products = new() { "coin_pack_1", "subscription_premium" };

Myket.Initialize(this, "YOUR_RSA_KEY_HERE", products);

Bazaar.Initialize(this, "YOUR_RSA_KEY_HERE", products);

Initialize must be called once when the app starts (e.g., in your main Activity).

2. Purchase a product

var result = store switch
{
    Market.Myket => await Myket.Purchase("coin_pack_1" , "Optional payload"),
    Market.Bazaar => await Bazaar.Purchase("coin_pack_1" , "Optional payload"),
}
if (result.Status)
    Console.WriteLine($"Purchase successful: {result.Product.productId}");
else
    Console.WriteLine("Purchase failed.");

3. Purchase a subscription

var result = store switch
{
    Market.Myket => await Myket.Subscription("coin_pack_1" , "Optional payload"),
    Market.Bazaar => await Bazaar.Subscription("coin_pack_1" , "Optional payload"),
}

if (result.Status)
    Console.WriteLine("Subscription activated!");

4. All availible items to purchase

//Myket
var items = await Myket.AllAvailibleItems();

//Bazaar
var items = await Bazaar.AllInappItems();
var subs = await Bazaar.AllSubItems();

It will return all subs and purchase items with details

5. Consume a product (for repeatable items)

var result = store switch
{
    Market.Myket => await Myket.Consume(purchaseModel),
    Market.Bazaar => await Bazaar.Consume(purchaseModel),
}

if (result.Status)
    Console.WriteLine($"Item '{result.ProductID}' Consumed");

6. Data Models (PurchaseModel)

public class PurchaseModel
{
    public string? productId { get; set; }
    public string? purchaseToken { get; set; }
    public JsonElement? state { get; set; }
    public string? payload { get; set; }
    public string? signature { get; set; }
    public string? orderId { get; set; }
    public string? originalJson { get; set; }
    public string? purchaseTime { get; set; }
    public string? type { get; set; }
}

7. ItemModel

Contains product details.

public class ItemModel
{
    public string? productId { get; set; }
    public string? description { get; set; }
    public string? price { get; set; }
    public string? title { get; set; }
    public string? type { get; set; }
}

⚠️ Notes

• Call Myket.Initialize() or Bazaar.Initialize() once before using any other methods.
• All operations are asynchronous — make sure to use await.
• If a purchase or subscription fails or is canceled, the returned Status will be false.
• Always validate the purchase signature on your server to ensure transaction integrity.
• The RSA key must match the one from your Myket developer panel.
• For consumable items, remember to call Consume() after a successful purchase.
• Do not call Initialize() multiple times — the helper automatically handles initialization state.
• Make sure to declare all your product IDs when calling Initialize().
• All callbacks return strongly typed models (PurchaseModel, ItemModel) for simplicity.

👨‍💻 Author: SLVZ