using Baya.Application.Contracts.Common;
using Baya.Application.Contracts.Invoices;
using Baya.Application.Contracts.Payments;
using Baya.Infrastructure.CrossCutting.Seams;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace Baya.Infrastructure.CrossCutting.ServiceConfiguration;

public static class ServiceCollectionExtension
{
    /// <summary>
    /// Registers the cross-cutting seams (time, PII encryption, cache, object storage, SMS) with their
    /// in-memory/local mock implementations. Swapping in a real provider later is a registration change
    /// here — callers depend only on the Application contracts. (The real in-app
    /// <c>INotificationDispatcher</c> needs the database, so it is registered in the Persistence layer.)
    /// </summary>
    public static IServiceCollection AddCrossCuttingSeams(this IServiceCollection services, IConfiguration configuration)
    {
        services.Configure<SeamOptions>(configuration.GetSection(SeamOptions.SectionName));

        services.AddMemoryCache();

        services.AddSingleton<IDateTimeProvider, SystemDateTimeProvider>();
        services.AddSingleton<IFieldEncryptor, SymmetricFieldEncryptor>();
        services.AddSingleton<ICacheService, MemoryCacheService>();
        services.AddSingleton<IObjectStorage, LocalDiskObjectStorage>();

        // OTP/SMS delivery rail (backend-phase-2). The mock logs the code; a real gateway client
        // (Kavenegar/Ghasedak/SMS.ir) replaces this registration only.
        services.AddSingleton<ISmsSender, LoggingSmsSender>();

        // استعلام شبا IBAN-owner ↔ national-id inquiry (backend-phase-3). The mock returns a deterministic
        // fake match; a real Finnotech/banking-bridge client replaces this registration only.
        services.AddSingleton<IBankAccountOwnershipVerifier, MockBankAccountOwnershipVerifier>();

        // Address geocoding (backend-phase-4). The mock derives deterministic coordinates around the city
        // centroid with no network call; a real Neshan/Google geocoding client replaces this registration.
        services.AddSingleton<IGeocoder, MockGeocoder>();

        // Nurse-verification vendors (backend-phase-6). All three are deterministic mocks; a real Iranian
        // e-KYC vendor / Shahkar bridge / (future) MoH-INO portal swaps in by a registration change only —
        // no mock behaviour is baked into any handler call site.
        services.AddSingleton<IShahkarVerifier, MockShahkarVerifier>();
        services.AddSingleton<IIdentityKycProvider, MockIdentityKycProvider>();
        services.AddSingleton<ICredentialVerifier, MockCredentialVerifier>();

        // Payment-capture trigger (backend-phase-9). The mock returns a deterministic succeeded capture so
        // ConvertRequestToBooking is testable now; in b10 the real card capture replaces this registration
        // and calls ConvertRequestToBooking directly on a real payment_transactions.succeeded.
        services.AddSingleton<IPaymentCaptureSimulator, MockPaymentCaptureSimulator>();

        // Payments money-path seams (backend-phase-10). All four are deterministic mocks; a real card PSP /
        // تسهیم split adapter (config-selected per payment_gateways.config_json), per-provider signature
        // verifier, and StackExchange.Redis lock swap in by a registration change only — no mock behaviour is
        // baked into any handler. The DB uniques/state-machine remain the authoritative money-path backstop.
        services.AddSingleton<IPaymentProvider, MockPaymentProvider>();
        services.AddSingleton<ISettlementSplitProvider, MockSettlementSplitProvider>();
        services.AddSingleton<IWebhookVerifier, MockWebhookVerifier>();
        services.AddSingleton<IDistributedLock, InProcessDistributedLock>();

        // Refunds/invoices seams (backend-phase-11). سامانه مودیان e-invoicing is mocked (pending/no-ref by
        // default; config can force registered). IBnplProvider is a thin local stub so the bnpl_revert refund
        // path runs before b12 merges — b12 owns the real seam. Both swap in by a registration change only.
        services.AddSingleton<IMoadianClient, MockMoadianClient>();
        services.AddSingleton<IBnplProvider, MockBnplProvider>();

        return services;
    }
}