namespace LMEMappeCatastaliApp.Services;

public interface IPlayBillingService
{
    Task<IReadOnlyList<PlaySubscriptionPlan>> GetSubscriptionPlansAsync(CancellationToken cancellationToken = default);
    Task<PlayBillingResult> RestoreAsync(CancellationToken cancellationToken = default);
    Task<PlayBillingResult> PurchaseAsync(string basePlanId, CancellationToken cancellationToken = default);
}

public sealed record PlaySubscriptionPlan(string BasePlanId, string FormattedPrice, string BillingPeriod);

public sealed record PlayBillingResult(
    bool Completed,
    bool HasActiveSubscription,
    bool UserCancelled,
    string Message,
    string? PurchaseToken = null)
{
    public static PlayBillingResult Active(string message, string? purchaseToken = null) =>
        new(true, true, false, message, purchaseToken);
    public static PlayBillingResult Base(string message) => new(true, false, false, message);
    public static PlayBillingResult Cancelled(string message) => new(false, false, true, message);
    public static PlayBillingResult Failed(string message) => new(false, false, false, message);
}

public sealed class UnavailablePlayBillingService : IPlayBillingService
{
    public Task<IReadOnlyList<PlaySubscriptionPlan>> GetSubscriptionPlansAsync(CancellationToken cancellationToken = default) =>
        Task.FromResult<IReadOnlyList<PlaySubscriptionPlan>>([]);

    public Task<PlayBillingResult> RestoreAsync(CancellationToken cancellationToken = default) =>
        Task.FromResult(PlayBillingResult.Failed("Google Play Billing è disponibile solo nell'app Android installata da Google Play."));

    public Task<PlayBillingResult> PurchaseAsync(string basePlanId, CancellationToken cancellationToken = default) =>
        Task.FromResult(PlayBillingResult.Failed("Google Play Billing è disponibile solo nell'app Android installata da Google Play."));
}