namespace F9WebAiTest.Domain.Entities;

/// <summary>
/// DDD 聚合根基类：BusinessEntity + 领域事件。
/// 聚合根是聚合的入口与唯一代表，外部只能通过聚合根访问聚合内部对象，通过仓储持久化。
/// 参考 BBIT.F9.Domain.Entities.AggregateRoot
/// </summary>
public abstract class AggregateRoot : BusinessEntity, IAggregateRoot
{
    private readonly List<IDomainEvent> _domainEvents = new();
    public IReadOnlyCollection<IDomainEvent> DomainEvents => _domainEvents.AsReadOnly();

    protected void AddDomainEvent(IDomainEvent domainEvent) => _domainEvents.Add(domainEvent);

    public void ClearDomainEvents() => _domainEvents.Clear();
}

/// <summary>聚合根标记接口</summary>
public interface IAggregateRoot
{
}