using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Webshop.Domain.Entities;

/// <summary>
/// Zum Gruppieren und Organisieren von Produkten.
/// </summary>
public class Category
{
    [Key]
    public Guid Id { get; set; }

    [Required]
    [MaxLength(255)]
    public string Name { get; set; }

    [MaxLength(1000)]
    public string? Description { get; set; }

    // Unique-Constraint wird typischerweise via Fluent API konfiguriert
    [Required]
    [MaxLength(255)]
    public string Slug { get; set; }

    [ForeignKey(nameof(ParentCategory))]
    public Guid? ParentCategoryId { get; set; }

    [MaxLength(2000)]
    public string? ImageUrl { get; set; }

    [Required]
    public bool IsActive { get; set; }

    [Required]
    public int DisplayOrder { get; set; }

    // Navigation Properties
    public virtual Category? ParentCategory { get; set; }
    public virtual ICollection<Category> SubCategories { get; set; } = new List<Category>();
    public virtual ICollection<ProductCategory> ProductCategories { get; set; } = new List<ProductCategory>();
    public virtual ICollection<CategoryDiscount> CategoryDiscounts { get; set; } = new List<CategoryDiscount>();
}