using Azaion.Common.Database;
using Azaion.Common.DTO;
using Azaion.Common.Events;
using MediatR;
using MessagePack;
using Microsoft.Extensions.Logging;

namespace Azaion.Common.Services.Inference;

public class InferenceServiceEventHandler(IInferenceService inferenceService,
    IAnnotationService annotationService,
    IMediator mediator,
    ILogger<InferenceServiceEventHandler> logger) :
        INotificationHandler<InferenceDataEvent>,
        INotificationHandler<AIAvailabilityStatusEvent>
{
    public async Task Handle(InferenceDataEvent e, CancellationToken ct)
    {
        try
        {
            if (e.Command.Message == "DONE")
            {
                await inferenceService.InferenceCancelTokenSource.CancelAsync();
                return;
            }

            var annImage = MessagePackSerializer.Deserialize<AnnotationImage>(e.Command.Data, cancellationToken: ct);
            var annotation = await annotationService.SaveAnnotation(annImage, ct);
            await mediator.Publish(new AnnotationAddedEvent(annotation), ct);
        }
        catch (Exception ex)
        {
            logger.LogError(ex, ex.Message);
        }
    }

    public async Task Handle(AIAvailabilityStatusEvent e, CancellationToken ct)
    {

        e.Status = AIAvailabilityEnum.Enabled;

    }
}