using Microsoft.Extensions.DependencyInjection;

namespace MeetingAssistant.Recording;

internal static class PortableMeetingAudioRegistration
{
    public static void Add(IServiceCollection services)
    {
        Add(services, OperatingSystem.IsMacOS());
    }

    internal static void Add(IServiceCollection services, bool isMacOs)
    {
        if (!isMacOs)
        {
            services.AddSingleton<IMeetingAudioSource, UnavailableMeetingAudioSource>();
            return;
        }

        services.AddSingleton<IMacOsAudioCaptureProcessFactory, MacOsAudioCaptureProcessFactory>();
        services.AddSingleton<MacOsMicrophoneAudioSource>();
        services.AddSingleton<MacOsSystemAudioSource>();
        services.AddSingleton<IAcousticEchoCancellerFactory, AdaptiveFilterAcousticEchoCancellerFactory>();
        services.AddSingleton<IMeetingAudioSource>(serviceProvider => new CompositeMeetingAudioSource(
            serviceProvider.GetRequiredService<MacOsMicrophoneAudioSource>(),
            serviceProvider.GetRequiredService<MacOsSystemAudioSource>(),
            serviceProvider.GetRequiredService<IAcousticEchoCancellerFactory>(),
            serviceProvider.GetRequiredService<ILogger<CompositeMeetingAudioSource>>()));
    }
}