namespace OrpaonVision.Core.Domain;

/// <summary>
/// 版本化实体基类。
/// </summary>
public abstract class VersionedEntityBase : AuditableEntityBase
{
    /// <summary>
    /// 版本号。
    /// </summary>
    public string VersionNo { get; set; } = string.Empty;

    /// <summary>
    /// 状态。
    /// </summary>
    public int Status { get; set; }

    /// <summary>
    /// 发布时间（UTC）。
    /// </summary>
    public DateTime? PublishedAt { get; private set; }

    /// <summary>
    /// 发布者。
    /// </summary>
    public string? PublishedBy { get; private set; }

    /// <summary>
    /// 是否为当前版本。
    /// </summary>
    public bool IsCurrent { get; private set; }

    /// <summary>
    /// 是否已发布。
    /// </summary>
    public bool IsPublished => PublishedAt.HasValue;

    /// <summary>
    /// 标记为已发布。
    /// </summary>
    /// <param name="publishedBy">发布者。</param>
    public virtual void MarkAsPublished(string? publishedBy = null)
    {
        if (!IsPublished)
        {
            PublishedAt = DateTime.UtcNow;
            PublishedBy = publishedBy;
            Status = 1; // 已发布状态
            MarkAsUpdated(publishedBy);
        }
    }

    /// <summary>
    /// 标记为当前版本。
    /// </summary>
    /// <param name="updatedBy">更新者。</param>
    public virtual void MarkAsCurrent(string? updatedBy = null)
    {
        if (!IsCurrent)
        {
            IsCurrent = true;
            MarkAsUpdated(updatedBy);
        }
    }

    /// <summary>
    /// 取消当前版本状态。
    /// </summary>
    /// <param name="updatedBy">更新者。</param>
    public virtual void UnmarkCurrent(string? updatedBy = null)
    {
        if (IsCurrent)
        {
            IsCurrent = false;
            MarkAsUpdated(updatedBy);
        }
    }

    /// <summary>
    /// 设置版本号。
    /// </summary>
    /// <param name="versionNo">版本号。</param>
    /// <param name="updatedBy">更新者。</param>
    public virtual void SetVersionNo(string versionNo, string? updatedBy = null)
    {
        if (VersionNo != versionNo)
        {
            VersionNo = versionNo;
            MarkAsUpdated(updatedBy);
        }
    }

    /// <summary>
    /// 设置状态。
    /// </summary>
    /// <param name="status">状态。</param>
    /// <param name="updatedBy">更新者。</param>
    public virtual void SetStatus(int status, string? updatedBy = null)
    {
        if (Status != status)
        {
            Status = status;
            MarkAsUpdated(updatedBy);
        }
    }
}