// src/Webshop.Domain/Entities/Product.cs
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Webshop.Domain.Entities
{
    public class Product
    {
        [Key]
        public Guid Id { get; set; } = Guid.NewGuid();

        [Required, MaxLength(255)]
        public string Name { get; set; } = string.Empty;
        [MaxLength(4000)]
        public string? Description { get; set; }
        [MaxLength(500)]
        public string? ShortDescription { get; set; }
        [Required, MaxLength(50)]
        public string SKU { get; set; } = string.Empty;
        [Required]
        public decimal Price { get; set; }
        public decimal? OldPrice { get; set; }
        [Required]
        public bool IsActive { get; set; }
        [Required]
        public bool IsInStock { get; set; }
        [Required]
        public int StockQuantity { get; set; }
        public decimal? Weight { get; set; }
        public decimal? Width { get; set; }
        public decimal? Height { get; set; }
        public decimal? Length { get; set; }

        [Required, MaxLength(255)]
        public string Slug { get; set; } = string.Empty;
        [Required]
        public DateTimeOffset CreatedDate { get; set; } = DateTimeOffset.UtcNow;
        public DateTimeOffset? LastModifiedDate { get; set; }
        [ForeignKey(nameof(Supplier))]
        public Guid? SupplierId { get; set; }
        public decimal? PurchasePrice { get; set; }

        // << NEUE EIGENSCHAFTEN FÜR SONDERANGEBOTE >>
        public bool IsFeatured { get; set; } = false;
        public int FeaturedDisplayOrder { get; set; } = 0;
        // << ENDE NEUE EIGENSCHAFTEN >>

        public virtual Supplier? Supplier { get; set; }
        public virtual ICollection<ProductVariant> Variants { get; set; } = new List<ProductVariant>();
        public virtual ICollection<Review> Reviews { get; set; } = new List<Review>();
        public virtual ICollection<ProductDiscount> ProductDiscounts { get; set; } = new List<ProductDiscount>();
        public virtual ICollection<Productcategorie> Productcategories { get; set; } = new List<Productcategorie>();
        public virtual ICollection<ProductImage> Images { get; set; } = new List<ProductImage>();
        [Timestamp] // Diese Annotation ist entscheidend!
        public byte[] RowVersion { get; set; }
    }
}