hrynco-ef/HrynCo.DAL.Abstract/Entities/Entity.cs

namespace HrynCo.DAL.Abstract.Entities;

public interface IEntity
{
    DateTimeOffset Created { get; set; }
    object Id { get; set; }
    DateTimeOffset? Updated { get; set; }
}

public interface IEntity<TId> : IEntity where TId : struct
{
    new TId Id { get; set; }
}

[Serializable]
public class Entity<TId> : IEntity<TId> where TId : struct
{
    protected Entity()
    {
    }

    public Entity(TId id)
    {
        Id = id;
    }

    public TId Id { get; set; }

    object IEntity.Id
    {
        get => Id;
        set
        {
            if (value is TId typedValue)
            {
                Id = typedValue;
            }
            else
            {
                throw new InvalidCastException($"Cannot cast value of type {value.GetType()} to {typeof(TId)}.");
            }
        }
    }

    public DateTimeOffset Created { get; set; }
    public DateTimeOffset? Updated { get; set; }
}

[Serializable]
public abstract class Entity : Entity<Guid>
{
    protected Entity()
    {
        Id = Guid.NewGuid();
    }

    protected Entity(Guid id)
        : base(id)
    {
    }
}

[Serializable]
public abstract class NamedEntity : Entity
{
    public required string Name { get; set; }
}