namespace BloatedHandler.Bloated;

public class DispatchShipmentHandler : ICommandHandler<DispatchShipment>
{
    private readonly Db _db;
    private readonly IEmailer _emailer;
    private readonly IEventPublisher _eventPublisher;
    private readonly ILogger _logger;

    public DispatchShipmentHandler(Db db, IEmailer emailer, IEventPublisher eventPublisher, ILogger logger)
    {
        _db = db;
        _emailer = emailer;
        _eventPublisher = eventPublisher;
        _logger = logger;
    }

    public void Handle(DispatchShipment command)
    {
        var shipment = _db.GetById(command.ShipmentId);
        if (shipment == null)
        {
            throw new InvalidOperationException("Shipment not found.");
        }

        if (shipment.Status != ShipmentStatus.Ready)
        {
            throw new InvalidOperationException("Shipment is not ready for dispatch.");
        }

        shipment.Status = ShipmentStatus.Dispatched;
        shipment.DispatchedAt = DateTime.UtcNow;

        _db.Save(shipment);

        _emailer.NotifyCustomer(shipment);

        _eventPublisher.Publish(new ShipmentDispatched(shipment.Id, shipment.DispatchedAt));

        _logger.Log($"Shipment {shipment.Id} dispatched.");
    }
}















public class DispatchShipment
{
    public DispatchShipment(object shipmentId)
    {
        ShipmentId = shipmentId;
    }

    public object ShipmentId { get; set; }
}

public class Shipment
{
    public Shipment(DateTime dispatchedAt, Guid id)
    {
        DispatchedAt = dispatchedAt;
        Id = id;
    }

    public ShipmentStatus Status { get; set; }
    public DateTime DispatchedAt { get; set; }
    public Guid Id { get; set; }
}

public class ShipmentDispatched
{
    public ShipmentDispatched(Guid id, object dispatchedAt)
    {
        throw new NotImplementedException();
    }
}

public enum ShipmentStatus
{
    Ready,
    Dispatched
}

public interface ILogger
{
    void Log(string s);
}

public interface IEventPublisher
{
    void Publish(ShipmentDispatched shipmentDispatched);
}

public interface IEmailer
{
    void NotifyCustomer(object shipment);
}

public interface Db
{
    void Save(object shipment);
    Shipment GetById(object shipmentId);
}

public interface ICommandHandler<T>
{
}