using System.ComponentModel.DataAnnotations.Schema;
using Microsoft.EntityFrameworkCore;

namespace Distribution.Models
{
    public class GoodsReceipt : Template
    {
        /// <summary>Null for a direct receipt (goods received without a purchase order).</summary>
        public Guid? FK_PurchaseOrderId { get; set; }
        [ForeignKey("FK_PurchaseOrderId")]
        public PurchaseOrder? PurchaseOrder { get; set; }

        /// <summary>Optional supplier for a direct receipt; for PO receipts the supplier comes from the PO.</summary>
        public Guid? FK_SupplierId { get; set; }
        [ForeignKey("FK_SupplierId")]
        public Supplier? Supplier { get; set; }

        public Guid FK_ReceivedByUserId { get; set; }

        /// <summary>
        /// Warehouse the accepted quantities are received into. Not listed as a field in
        /// docs/15_procurement.md's GoodsReceipt table, but required to write StockBalance/
        /// StockMovement rows (both keyed by LocationId+LocationType) for the accepted quantities.
        /// </summary>
        public Guid FK_WarehouseId { get; set; }
        [ForeignKey("FK_WarehouseId")]
        public Warehouse Warehouse { get; set; }

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

        /// <summary>GRN-wide default discount %, applied to any line that doesn't set its own.</summary>
        [Precision(5, 2)]
        public decimal DiscountPercent { get; set; }

        /// <summary>GRN-wide default VAT %, applied to any line that doesn't set its own.</summary>
        [Precision(5, 2)]
        public decimal VatPercent { get; set; }

        /// <summary>GRN-wide default NBT %, applied to any line that doesn't set its own.</summary>
        [Precision(5, 2)]
        public decimal NbtPercent { get; set; }

        public ICollection<GoodsReceiptItem> Items { get; set; } = [];
    }
}