using Microsoft.Extensions.DependencyInjection;

namespace StellaOps.Scanner.Reachability.Witnesses;

/// <summary>
/// Extension methods for registering suppression witness services.
/// Sprint: SPRINT_20260106_001_002 (SUP-019)
/// </summary>
public static class SuppressionWitnessServiceCollectionExtensions
{
    /// <summary>
    /// Adds suppression witness services to the dependency injection container.
    /// </summary>
    /// <param name="services">The service collection.</param>
    /// <returns>The service collection for chaining.</returns>
    public static IServiceCollection AddSuppressionWitnessServices(this IServiceCollection services)
    {
        // Register builder
        services.AddSingleton<ISuppressionWitnessBuilder, SuppressionWitnessBuilder>();

        // Register DSSE signer
        services.AddSingleton<ISuppressionDsseSigner, SuppressionDsseSigner>();

        // Register TimeProvider if not already registered
        services.AddSingleton(TimeProvider.System);

        return services;
    }
}