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

namespace Webshop.Domain.Entities;

/// <summary>
/// Verwaltung von Rabatten auf Produkte oder Kategorien.
/// </summary>
public class Discount
{
    [Key]
    public Guid Id { get; set; }

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

    [Required]
    [MaxLength(50)]
    public string DiscountType { get; set; } // "Percentage", "FixedAmount"

    // Precision wird via Fluent API konfiguriert
    [Required]
    public decimal DiscountValue { get; set; }

    [Required]
    public DateTimeOffset StartDate { get; set; }

    public DateTimeOffset? EndDate { get; set; }

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

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

    // Unique-Constraint wird via Fluent API konfiguriert
    [MaxLength(50)]
    public string? CouponCode { get; set; }

    public decimal? MinimumOrderAmount { get; set; }

    public int? MaximumUsageCount { get; set; }

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

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

    // Navigation Properties
    public virtual ICollection<ProductDiscount> ProductDiscounts { get; set; } = new List<ProductDiscount>();
    public virtual ICollection<CategoryDiscount> CategoryDiscounts { get; set; } = new List<CategoryDiscount>();
}