namespace AgriculturalPlatform.Api.Models;

/// <summary>收购单（过磅称重单）</summary>
public class PurchaseOrder
{
    public int Id { get; set; }

    /// <summary>收购单号（如 CG20260812-0001）</summary>
    public string OrderNo { get; set; } = string.Empty;

    /// <summary>农户</summary>
    public int FarmerId { get; set; }

    public Farmer? Farmer { get; set; }

    /// <summary>收购品种</summary>
    public int ProductId { get; set; }

    public Product? Product { get; set; }

    /// <summary>收购方组织（公司/站/个体）</summary>
    public int PurchaserOrgId { get; set; }

    public Organization? PurchaserOrg { get; set; }

    /// <summary>等级（一等/二等/三等）</summary>
    public string Grade { get; set; } = string.Empty;

    public string Unit { get; set; } = "公斤";

    /// <summary>单价（元/单位）</summary>
    public decimal UnitPrice { get; set; }

    /// <summary>毛重（kg）</summary>
    public decimal GrossWeight { get; set; }

    /// <summary>皮重（kg）</summary>
    public decimal TareWeight { get; set; }

    /// <summary>净重（kg）= 毛重 - 皮重</summary>
    public decimal NetWeight { get; set; }

    /// <summary>金额（元）= 净重 × 单价</summary>
    public decimal Amount { get; set; }

    /// <summary>过磅次数：1=已称毛重，2=已回皮完成</summary>
    public int WeighCount { get; set; }

    public PurchaseStatus Status { get; set; } = PurchaseStatus.Weighing;

    /// <summary>经办人</summary>
    public int? OperatorId { get; set; }

    public User? Operator { get; set; }

    /// <summary>第一次过磅时间（进场称毛重）</summary>
    public DateTime WeighInAt { get; set; } = DateTime.Now;

    /// <summary>回皮时间</summary>
    public DateTime? WeighOutAt { get; set; }

    public string Notes { get; set; } = string.Empty;

    public DateTime CreatedAt { get; set; } = DateTime.Now;

    public DateTime? UpdatedAt { get; set; }
}