#nullable enable

using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

using Abp.Domain.Entities.Auditing;

using VberZero.BaseSystem.Users;

namespace VberZero.BaseSystem;

public abstract class TreeEntity<TEntity> : TreeEntity<int, TEntity>
    where TEntity : class
{
}

public abstract class TreeEntity<TPrimaryKey, TEntity> : TreeEntityBase<TPrimaryKey?>
    where TEntity : class
{
    [ForeignKey("ParentNo")]
    public TEntity Parent { get; set; }
}

public abstract class TreeEntityBase<TPrimaryKey> : AuditedEntity<TPrimaryKey, User>
{
    public const int MaxDepth = 20;
    public const int PathMaxLength = 15 * MaxDepth;

    /// <summary>
    /// 父节点
    /// </summary>
    public TPrimaryKey? ParentNo { get; set; }

    /// <summary>
    /// 路径
    /// </summary>
    [StringLength(PathMaxLength)]
    public string Path { get; set; }

    /// <summary>
    /// 是否是叶子节点
    /// </summary>
    public bool IsLeaf { get; set; }

    /// <summary>
    /// 节点深度
    /// </summary>
    public int Depth { get; set; }

    public int Sort { get; set; }
}