using YY.Admin.Core.Entity;

namespace YY.Admin.Core.Util;

/// <summary>
/// 「货物皮重」桌面端本地累计计算器。
/// 与后端 IMesXslRawMaterialEntryService.sumCargoTareByBillNos 保持同一口径：
/// 同一榜单（BillNo）下所有原料入场记录的 PalletTareTotal（托盘及皮重合计）累加。
/// </summary>
public static class CargoTareWeightCalculator
{
    /// <summary>按 BillNo 分组累计「货物皮重」。</summary>
    public static Dictionary<string, double> SumByBillNos(
        IEnumerable<MesXslRawMaterialEntry> entries,
        IEnumerable<string?> billNos)
    {
        var keys = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
        foreach (var b in billNos)
        {
            if (!string.IsNullOrWhiteSpace(b)) keys.Add(b!);
        }
        var result = new Dictionary<string, double>(StringComparer.OrdinalIgnoreCase);
        if (keys.Count == 0)
        {
            return result;
        }

        foreach (var e in entries)
        {
            if (string.IsNullOrWhiteSpace(e.BillNo) || !keys.Contains(e.BillNo!))
            {
                continue;
            }
            if (e.PalletTareTotal is not { } tare || tare == 0d)
            {
                continue;
            }
            if (result.TryGetValue(e.BillNo!, out var acc))
            {
                result[e.BillNo!] = acc + tare;
            }
            else
            {
                result[e.BillNo!] = tare;
            }
        }
        return result;
    }
}